OCSL / Oaktree Specialty Lending Corporation - Pemfailan SEC, Laporan Tahunan, Penyata Proksi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

CUSTODY AGREEMENT by and among EACH ENTITY LISTED ON APPENDIX A THE BANK OF NEW YORK MELLON TABLE OF CONTENTS

Exhibit 99.1 CUSTODY AGREEMENT by and among EACH ENTITY LISTED ON APPENDIX A and THE BANK OF NEW YORK MELLON TABLE OF CONTENTS Page CUSTODY AGREEMENT 1 SECTION 1 – CUSTODY ACCOUNTS; INSTRUCTIONS 1 1.1 Definitions 1 1.2 Establishment of Account. 3 1.3 Representations and Warranties 4 1.4 Distributions 5 1.5 Authorized Instructions 5 1.6 Authentication 6 1.7 On-Line Systems 6 SECTION 2 – CUSTODY SER

Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2025 Financial Results

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2025 Financial Results LOS ANGELES, CA, August 5, 2025 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quarter ended June 30, 2025. Financial Highlights for the Quarter Ended June 3

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2025 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

NASDAQ: Earnings Presentation OCSL Third Quarter 2025 

Exhibit 99.2 NASDAQ: Earnings Presentation OCSL Third Quarter 2025  Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our future operating res

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 16, 2025 (May 14, 2025) Oaktr

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 16, 2025 (May 14, 2025) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of

Filed Pursuant to Rule 424(b)(5) Registration No. 333-269628 SUPPLEMENT NO. 3, DATED MAY 5, 2025 TO PROSPECTUS SUPPLEMENT, DATED FEBRUARY 8, 2023 (To Prospectus dated February 7, 2023) $300,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock T

Filed Pursuant to Rule 424(b)(5) Registration No. 333-269628 SUPPLEMENT NO. 3, DATED MAY 5, 2025 TO PROSPECTUS SUPPLEMENT, DATED FEBRUARY 8, 2023 (To Prospectus dated February 7, 2023) $300,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock This supplement is being filed to update, amend and supplement certain information in our prospectus dated February 7, 2023, as supplemented by that pr

Fourth Amendment to the Equity Distribution Agreement, dated May 5, 2025, by and among Oaktree Specialty Lending Corporation, Oaktree Fund Advisors, LLC and Oaktree Fund Administration, LLC and Keefe, Bruyette & Woods, Inc., Citizens JMP Securities, LLC, Raymond James & Associates, Inc. and SMBC Nikko Securities America, Inc., as placement agents.

EX-1.1 Exhibit 1.1 Oaktree Specialty Lending Corporation Shares of Common Stock, par value $0.01 per share Fourth Amendment to the Equity Distribution Agreement This Fourth Amendment, dated May 5, 2025 (the “Amendment”), is to that certain Equity Distribution Agreement, dated February 7, 2022, by and among Oaktree Specialty Lending Corporation, a Delaware corporation (the “Company”), Oaktree Fund

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2025 Oaktree Specialty Len

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2025 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation) (

Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2025 Financial

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2025 Financial Results LOS ANGELES, CA, May 1, 2025 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quarter ended March 31, 2025. Financial Highlights for the Quarter Ended March 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2025 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation) (

Earnings Presentation NASDAQ: OCSL Second Quarter 2025

Exhibit 99.2 Earnings Presentation NASDAQ: OCSL Second Quarter 2025 Forward Looking Statements & Legal Disclosures Second Quarter 2025 Investor Presentation NASDAQ: OCSL Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation

Amendment No. 7 and Limited Waiver to Amended and Restated Senior Secured Revolving Credit Agreement, dated as of April 8, 2025, by and among the Registrant, as borrower, the lenders party thereto and ING Capital LLC, as administrative agent

Exhibit 10.1 EXECUTION VERSION AMENDMENT NO. 7 AND LIMITED WAIVER TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT This AMENDMENT NO. 7 AND LIMITED WAIVER TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT (this “Agreement”), dated as of April 8, 2025, is made with respect to that certain Amended and Restated Senior Secured Revolving Credit Agreement, dated as of Fe

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 11, 2025 (April 8, 2025) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 5, 2025 (March 4, 2025) Oak

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 5, 2025 (March 4, 2025) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction o

Eighth Supplemental Indenture, dated as of February 27, 2025, relating to the 6.340% Notes due 2030, between the Company and Deutsche Bank Trust Company Americas, as trustee

EX-4.1 Exhibit 4.1 EIGHTH SUPPLEMENTAL INDENTURE between OAKTREE SPECIALTY LENDING CORPORATION and DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee Dated as of February 27, 2025 EIGHTH SUPPLEMENTAL INDENTURE THIS EIGHTH SUPPLEMENTAL INDENTURE (this “Eighth Supplemental Indenture”), dated as of February 27, 2025, is between Oaktree Specialty Lending Corporation, a Delaware corporation (the “Company

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 27, 2025 (February 27, 2025) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisd

Calculation of Filing Fee Tables (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly R eg istered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables 424(b)(2) (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly R eg istered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid  Debt 6.

Filed Pursuant to Rule 424(b)(2) Registration No. 333-269628 PROSPECTUS SUPPLEMENT (to Prospectus dated February 7, 2023) $300,000,000 Oaktree Specialty Lending Corporation 6.340% Notes due 2030 We are offering $300,000,000 in aggregate principal amo

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-269628 PROSPECTUS SUPPLEMENT (to Prospectus dated February 7, 2023) $300,000,000 Oaktree Specialty Lending Corporation 6.340% Notes due 2030 We are offering $300,000,000 in aggregate principal amount of 6.340% notes due 2030, which we refer to as the Notes. The Notes will mature on February 27, 2030. We will pay interest on th

Underwriting Agreement, dated February 20, 2025 by and among Oaktree Specialty Lending Corporation, Oaktree Fund Advisors, LLC, Oaktree Fund Administration, LLC, SMBC Nikko Securities America, Inc., BNP Paribas Securities Corp., ING Financial Markets LLC and Wells Fargo Securities, LLC

EX-1.1 Exhibit 1.1 Oaktree Specialty Lending Corporation $300,000,000 Aggregate Principal Amount of Notes due 2030 Underwriting Agreement February 20, 2025 SMBC Nikko Securities America, Inc. BNP Paribas Securities Corp. ING Financial Markets LLC Wells Fargo Securities, LLC c/o SMBC Nikko Securities America, Inc. 277 Park Avenue New York, NY 10172 BNP Paribas Securities Corp. 787 Seventh Avenue Ne

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 21, 2025 (February 20, 2025) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisd

Oaktree Specialty Lending Corporation 6.340% Notes due 2030 PRICING TERM SHEET February 20, 2025

Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated February 20, 2025 Relating to Preliminary Prospectus Supplement dated February 20, 2025 and Prospectus dated February 7, 2023 Registration No.

SUBJECT TO COMPLETION, DATED FEBRUARY 20, 2025

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-269628 This preliminary prospectus supplement relates to an effective registration statement under the Securities Act of 1933, but is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell and are not soliciting offers to buy these securities in any juri

LETTER AGREEMENT

Exhibit 10.1 LETTER AGREEMENT January 31, 2025 Oaktree Specialty Lending Corporation (the “Company”) 333 South Grand Avenue, 28th Floor Los Angeles, California 90071 Re: Fee Waiver Agreement This Letter Agreement documents the waiver by Oaktree Fund Advisors, LLC (the “Adviser”) of certain Incentive Fees payable to it by the Company pursuant to the Third Amended and Restated Investment Advisory Ag

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 4, 2025 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporati

Oaktree Specialty Lending Corporation Announces First Fiscal Quarter 2025 Financial Results

EX-99.1 Exhibit 99.1 Oaktree Specialty Lending Corporation Announces First Fiscal Quarter 2025 Financial Results LOS ANGELES, CA, February 4, 2025 -Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quarter ended December 31, 2024.  Financial Highlights for the Quarte

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements con

Exhibit 99.2 Earnings Presentation NASDAQ: OCSL First Quarter 2025 Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our future operating resu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant  ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ De

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Pro

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Pro

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the app

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 19, 2024 Oaktree Special

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 19, 2024 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporat

Oaktree Specialty Lending Corporation Announces Fourth Fiscal Quarter and Full Year 2024 Financial Results and Declares Quarterly Distribution of $0.55 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Fourth Fiscal Quarter and Full Year 2024 Financial Results and Declares Quarterly Distribution of $0.55 Per Share LOS ANGELES, CA, November 19, 2024 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quart

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements con

Exhibit 99.2 Earnings Presentation NASDAQ: OCSL Fourth Quarter 2024 Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our future operating res

THIRD AMENDED AND RESTATED INVESTMENT ADVISORY AGREEMENT OAKTREE SPECIALTY LENDING CORPORATION OAKTREE FUND ADVISORS, LLC

Exhibit 10.1 EXECUTION VERSION THIRD AMENDED AND RESTATED INVESTMENT ADVISORY AGREEMENT BETWEEN OAKTREE SPECIALTY LENDING CORPORATION AND OAKTREE FUND ADVISORS, LLC This Third Amended and Restated Investment Advisory Agreement (this “Agreement”) made as of November 14, 2024 and effective as of July 1, 2024 (the “Effective Date”), by and between OAKTREE SPECIALTY LENDING CORPORATION, a Delaware cor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

DESCRIPTION OF SECURITIES

Exhibit 4.2 DESCRIPTION OF SECURITIES Capitalized terms used but not defined herein shall have the meaning ascribed to them in the Annual Report on Form 10-K to which this Description of Securities is an exhibit. (a)Common Stock, $0.01 par value per share Our authorized capital stock consists of 250,000,000 shares of common stock, par value $0.01 per share, of which 82,245,319 shares were outstand

Calculation of Filing Fee Tables (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables 424(b)(5) (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Maximum Aggregate Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee (1) Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid  Equity  Common Stock, $0.

Third Amendment to the Equity Distribution Agreement, dated August 2, 2024, by and among Oaktree Specialty Lending Corporation, Oaktree Fund Advisors, LLC and Oaktree Fund Administration, LLC and Keefe, Bruyette & Woods, Inc., Citizens JMP Securities, LLC, Jefferies LLC and Raymond James & Associates, Inc., as placement agents.

Exhibit 1.1 Oaktree Specialty Lending Corporation Shares of Common Stock, par value $0.01 per share Third Amendment to the Equity Distribution Agreement This Third Amendment, dated August 2, 2024 (the “Amendment”), is to that certain Equity Distribution Agreement, dated February 7, 2022, by and among Oaktree Specialty Lending Corporation, a Delaware corporation (the “Company”), Oaktree Fund Adviso

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2024 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

$300,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-269628 SUPPLEMENT NO. 2, DATED AUGUST 2, 2024 TO PROSPECTUS SUPPLEMENT, DATED FEBRUARY 8, 2023 (To Prospectus dated February 7, 2023) $300,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock This supplement is being filed to update, amend and supplement certain information in our prospectus dated February 7, 2023, as supplemented by that

Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2024 Financial Results and Declares Quarterly Distribution of $0.55 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2024 Financial Results and Declares Quarterly Distribution of $0.55 Per Share LOS ANGELES, CA, August 1, 2024 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quarter ended June 30,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 1, 2024 Oaktree Specialty

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 1, 2024 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements con

Exhibit 99.2 Earnings Presentation NASDAQ: OCSL Third Quarter 2024 Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our future operating resu

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2024 (June 14, 2024) Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction o

Seventh Amendment to Loan and Security Agreement, dated as of May 20, 2024, by and among the Company, OSI 2 Senior Lending SPV, LLC, and Citibank, N.A.

Exhibit 1.1 EXECUTION VERSION SEVENTH AMENDMENT TO LOAN AND SECURITY AGREEMENT THIS SEVENTH AMENDMENT TO THE LOAN AND SECURITY AGREEMENT (this “Amendment”), is made as of May 20, 2024, by and among OAKTREE SPECIALTY LENDING CORPORATION (“OCSL”), as collateral manager (in such capacity, the “Collateral Manager”), OSI 2 SENIOR LENDING SPV, LLC, as the borrower (the “Borrower”), Citibank, N.A. (“Citi

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 22, 2024 (May 20, 2024) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements con

Exhibit 99.2 Earnings Presentation NASDAQ: OCSL Second Quarter 2024 April 30, 2024 Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our futur

LETTER AGREEMENT

Exhibit 10.1 LETTER AGREEMENT April 26, 2024 Oaktree Specialty Lending Corporation (the “Company”) 333 South Grand Avenue, 28th Floor Los Angeles, California 90071 Re: Fee Waiver Agreement This Letter Agreement documents the waiver by Oaktree Fund Advisors, LLC (the “Adviser”) of certain Base Management Fees payable to it by the Company pursuant to the Second Amended and Restated Investment Adviso

Oaktree Specialty Lending Corporation Announces Permanent Base Management Fee Reduction

Exhibit 99.3 Oaktree Specialty Lending Corporation Announces Permanent Base Management Fee Reduction LOS ANGELES, CA, April 30, 2024 – Oaktree Specialty Lending Corporation (NASDAQ:OCSL) (“OCSL” or the “Company”) today announced a permanent reduction in its base management fee. Effective July 1, 2024, the base management fee will be reduced to an annual rate of 1.00% from 1.50% on gross assets, in

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 30, 2024 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2024 Financial Results and Declares Quarterly Distribution of $0.55 Per Share Announces Permanent Management Fee Reduction

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2024 Financial Results and Declares Quarterly Distribution of $0.55 Per Share Announces Permanent Management Fee Reduction LOS ANGELES, CA, April 30, 2024 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 5, 2024 (March 4, 2024) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction o

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 1, 2024 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements co

Exhibit 99.2 first quarter 2024 earnings presentation february 1, 2024 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements contained in this presentation may include statements as to: our fut

Oaktree Specialty Lending Corporation Announces First Fiscal Quarter 2024 Financial Results and Declares Quarterly Distribution of $0.55 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces First Fiscal Quarter 2024 Financial Results and Declares Quarterly Distribution of $0.55 Per Share LOS ANGELES, CA, February 1, 2024 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quarter ended Decembe

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

PRE 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

DESCRIPTION OF SECURITIES

Exhibit 4.2 DESCRIPTION OF SECURITIES Capitalized terms used but not defined herein shall have the meaning ascribed to them in the Annual Report on Form 10-K to which this Description of Securities is an exhibit. (a)Common Stock, $0.01 par value per share Our authorized capital stock consists of 250,000,000 shares of common stock, par value $0.01 per share, of which 77,225,329 shares were outstand

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

OAKTREE GARDENS OLP, LLC OAKTREE SPECIALTY LENDING CORPORATION OAKTREE STRATEGIC CREDIT FUND SECURITIES TRADING POLICY

Exhibit 19.1 OAKTREE GARDENS OLP, LLC OAKTREE SPECIALTY LENDING CORPORATION OAKTREE STRATEGIC CREDIT FUND SECURITIES TRADING POLICY I.GENERAL Each of Oaktree Gardens OLP, LLC, Oaktree Specialty Lending Corporation and Oaktree Strategic Credit Fund and their subsidiaries (each, a “Company”, and collectively, the “Companies”), and each of their respective directors, officers and employees, including

CLAWBACK POLICY

Exhibit 97.1 OAKTREE SPECIALTY LENDING CORPORATION CLAWBACK POLICY I. PURPOSE The Board of Directors (the “Board”) of Oaktree Specialty Lending Corporation, a Delaware corporation (the “Company”), believes that it is in the best interests of the Company and its stockholders to create and maintain a culture that emphasizes integrity and accountability. The Board has therefore adopted this policy wh

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 14, 2023 Oaktree Special

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 14, 2023 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporat

OAKTREE GARDENS OLP, LLC OAKTREE SPECIALTY LENDING CORPORATION OAKTREE STRATEGIC CREDIT FUND CODE OF ETHICS

Exhibit 14.1 OAKTREE GARDENS OLP, LLC OAKTREE SPECIALTY LENDING CORPORATION OAKTREE STRATEGIC CREDIT FUND CODE OF ETHICS I.INTRODUCTION This Code of Ethics (the “Code”) has been adopted pursuant to Rule 17j-1 under the Investment Company Act of 1940, as amended (the “Investment Company Act”). Under Rule 17j-1, which applies to BDCs pursuant to Section 59 of the Investment Company Act, each Company

Oaktree Specialty Lending Corporation Announces Fourth Fiscal Quarter and Full Year 2023 Financial Results and Declares Quarterly Distribution of $0.55 Per Share and Special Distribution of $0.07 Per Share

EX-99.1 Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Fourth Fiscal Quarter and Full Year 2023 Financial Results and Declares Quarterly Distribution of $0.55 Per Share and Special Distribution of $0.07 Per Share LOS ANGELES, CA, November 14, 2023 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements co

EX-99.2 Exhibit 99.2 fourth quarter 2023 earnings presentation november 14, 2023 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements contained in this presentation may include statements as t

Seventh Supplemental Indenture, dated as of August 15, 2023, relating to the 7.100% Notes due 2029, between the Company and Deutsche Bank Trust Company Americas, as trustee

EX-4.1 Exhibit 4.1 SEVENTH SUPPLEMENTAL INDENTURE between OAKTREE SPECIALTY LENDING CORPORATION and DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee Dated as of August 15, 2023 SEVENTH SUPPLEMENTAL INDENTURE THIS SEVENTH SUPPLEMENTAL INDENTURE (this “Seventh Supplemental Indenture”), dated as of August 15, 2023, is between Oaktree Specialty Lending Corporation, a Delaware corporation (the “Company

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 15, 2023 (August 15, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdicti

Calculation of Filing Fee Tables (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Car

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables 424(b)(2) (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid Debt 7.

$300,000,000 Oaktree Specialty Lending Corporation 7.100% Notes due 2029

Filed Pursuant to Rule 424(b)(2) Registration No. 333-269628 PROSPECTUS SUPPLEMENT (to Prospectus dated February 7, 2023) $300,000,000 Oaktree Specialty Lending Corporation 7.100% Notes due 2029 We are offering $300,000,000 in aggregate principal amount of 7.100% notes due 2029, which we refer to as the Notes. The Notes will mature on February 15, 2029. We will pay interest on the Notes on Februar

Underwriting Agreement, dated August 8, 2023, by and among Oaktree Specialty Lending Corporation, Oaktree Fund Advisors, LLC, Oaktree Fund Administration, LLC, BofA Securities, Inc., J.P. Morgan Securities LLC, RBC Capital Markets, LLC and SMBC Nikko Securities America, Inc.

EX-1.1 Exhibit 1.1 Oaktree Specialty Lending Corporation $300,000,000 Aggregate Principal Amount of Notes due 2029 Underwriting Agreement August 8, 2023 BofA Securities, Inc. J.P. Morgan Securities LLC RBC Capital Markets, LLC SMBC Nikko Securities America, Inc. c/o BofA Securities, Inc. One Bryant Park NY1-100-11-07 New York, New York 10036 J.P. Morgan Securities LLC 383 Madison Avenue New York,

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 9, 2023 (August 8, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction

SUBJECT TO COMPLETION, DATED AUGUST 8, 2023

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-269628 This preliminary prospectus supplement relates to an effective registration statement under the Securities Act of 1933, but is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell and are not soliciting offers to buy these securities in any juri

Oaktree Specialty Lending Corporation 7.100% Notes due 2029 PRICING TERM SHEET August 8, 2023

FWP Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated August 8, 2023 Relating to Preliminary Prospectus Supplement dated August 8, 2023 and Prospectus dated February 7, 2023 Registration No.

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 8, 2023 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

Second Amendment to the Equity Distribution Agreement, dated August 8, 2023, by and among Oaktree Specialty Lending Corporation, Oaktree Fund Advisors, LLC and Oaktree Fund Administration, LLC and Keefe, Bruyette & Woods, Inc., Jefferies LLC, JMP Securities LLC, Raymond James & Associates, Inc. and SMBC Nikko Securities America, Inc., as placement agents.

EX-1.1 Exhibit 1.1 Oaktree Specialty Lending Corporation Shares of Common Stock, par value $0.01 per share Second Amendment to the Equity Distribution Agreement This Second Amendment, dated August 8, 2023 (the “Amendment”), is to that certain Equity Distribution Agreement, dated February 7, 2022, by and among Oaktree Specialty Lending Corporation, a Delaware corporation (the “Company”), Oaktree Fu

$125,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-269628 SUPPLEMENT NO. 1, DATED AUGUST 8, 2023 TO PROSPECTUS SUPPLEMENT, DATED FEBRUARY 8, 2023 (To Prospectus dated February 7, 2023) $125,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock This supplement is being filed to update, amend and supplement certain information in our prospectus dated February 7, 2023, as supplemented by that

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 15)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 405 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 Sout

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2023 Financial Results and Declares Distribution of $0.55 Per Share

EX-99.1 Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2023 Financial Results and Declares Distribution of $0.55 Per Share LOS ANGELES, CA, August 3, 2023 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quarter ended June 30, 20

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements co

EX-99.2 Exhibit 99.2 third quarter 2023 earnings presentation august 3, 2023 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements contained in this presentation may include statements as to: o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2023 Oaktree Specialty

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2023 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 14)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 405 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 Sout

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 26, 2023 (June 23, 2023) Oak

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 26, 2023 (June 23, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction o

Amendment No. 6 to Amended and Restated Senior Secured Revolving Credit Agreement, dated as of June 23, 2023, by and among the Registrant, as borrower, the lenders party thereto and ING Capital LLC, as administrative agent

EX-10.1 Exhibit 10.1 EXECUTION VERSION AMENDMENT NO. 6 TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT This AMENDMENT NO. 6 TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT (this “Agreement”), dated as of June 23, 2023, is made with respect to that certain Amended and Restated Senior Secured Revolving Credit Agreement, dated as of February 25, 2019 (as amended by

Sixth Amendment to Loan and Security Agreement, dated as of May 25, 2023, by and among the Registrant, OSI 2 Senior Lending SPV, LLC, and Citibank, N.A.

EX-1.1 2 d503766dex11.htm EX-1.1 Exhibit 1.1 EXECUTION VERSION SIXTH AMENDMENT TO LOAN AND SECURITY AGREEMENT THIS SIXTH AMENDMENT TO THE LOAN AND SECURITY AGREEMENT (this “Amendment”), is made as of May 25, 2023, by and among OAKTREE SPECIALTY LENDING CORPORATION (“OCSL”), as collateral manager (in such capacity, the “Collateral Manager”), OSI 2 SENIOR LENDING SPV, LLC, as the borrower (the “Borr

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 30, 2023 (May 25, 2023) Oaktr

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 30, 2023 (May 25, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements co

EX-99.2 Exhibit 99.2 second quarter 2023 earnings presentation may 4, 2023 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements contained in this presentation may include statements as to: our

AMENDMENT NO. 5 TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT

Exhibit 10.8 Execution Version AMENDMENT NO. 5 TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT This AMENDMENT NO. 5 TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT (this “Agreement”), dated as of March 7, 2023, is made with respect to the Amended and Restated Senior Secured Revolving Credit Agreement, dated as of February 25, 2019 (as amended by that certain Ame

Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2023 Financial Results and Declares Distribution of $0.55 Per Share

EX-99.1 Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2023 Financial Results and Declares Distribution of $0.55 Per Share LOS ANGELES, CA, May 4, 2023 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quarter ended March 31, 202

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2023 Oaktree Specialty Len

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2023 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation) (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 20, 2023 (March 17, 2023) O

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 20, 2023 (March 17, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Pro

Amendment to the Equity Distribution Agreement, dated as of February 8, 2023, by and among Oaktree Specialty Lending Corporation, Oaktree Fund Advisors, LLC, Oaktree Fund Administration, LLC and Keefe, Bruyette & Woods, Inc., JMP Securities LLC, Raymond James & Associates, Inc. and SMBC Nikko Securities America, Inc., as placement agents.

Exhibit 1.1 Oaktree Specialty Lending Corporation Shares of Common Stock, par value $0.01 per share Amendment to the Equity Distribution Agreement This Amendment, dated February 8, 2023 (the “Amendment”), is to that certain Equity Distribution Agreement, dated February 7, 2022, by and among Oaktree Specialty Lending Corporation, a Delaware corporation (the “Company”), Oaktree Fund Advisors, LLC, a

Filed Pursuant to Rule 424(b)(2) Registration No. 333‑269628 PROSPECTUS SUPPLEMENT (To Prospectus dated February 7, 2023) $125,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock We are a specialty finance company dedicated to providing custom

Filed Pursuant to Rule 424(b)(2) Registration No. 333‑269628 PROSPECTUS SUPPLEMENT (To Prospectus dated February 7, 2023) $125,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock We are a specialty finance company dedicated to providing customized, one‑stop credit solutions to companies with limited access to public or syndicated capital markets. We were formed in late 2007 and operate as a

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 8, 2023 (February 8, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdic

Calculation of Filing Fee Tables (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Car

Exhibit 107 Calculation of Filing Fee Tables 424(b)(2) (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Maximum Aggregate Offering Price (1) Fee Rate Amount of Registration Fee (3) Equity Common Stock, $0.

Statement of Eligibility of Trustee on Form T-1.*

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) DEUTSCHE BANK TRUST COMPANY AMERICAS (formerly BANKERS TRUST COMPANY) (Exact name of trustee as specified in its cha

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements co

Exhibit 99.2 first quarter 2023 earnings presentation february 7, 2023 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements contained in this presentation may include statements as to: our fut

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 7, 2023 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2022 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Consent of Ernst & Young LLP.*

Consent of Independent Registered Public Accounting Firm We consent to the reference to our firm under the caption “Experts” in the Prospectus, dated February 7, 2023, and included in this Registration Statement (Form N-2) of Oaktree Specialty Lending Corporation (the “Registration Statement”).

Opinion and Consent of Kirkland & Ellis LLP.*

1301 Pennsylvania Avenue, N.W. Washington, D.C. 20004 United States +1 202 389 5000 Facsimile: +1 202 389 5200 www.kirkland.com February 7, 2023 Oaktree Specialty Lending Corporation 333 South Grand Avenue, 28th Floor Los Angeles, CA 90071 Re: Oaktree Specialty Lending Corporation — Registration Statement on Form N-2 We are issuing this opinion in our capacity as special legal counsel to Oaktree S

Filing Fee Table.

Exhibit (s) Calculation of Filing Fee Tables Form N-2 (Form Type) Oaktree Specialty Lending Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered (1) Proposed Maximum Offering Price Per Share (1) Maximum Aggregate Offering Price (1) Fee Rate Amount of Registration Fee (4) Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Equity Common Stock, $0.

Oaktree Specialty Lending Corporation Announces First Fiscal Quarter 2023 Financial Results and Declares Increased Distribution of $0.55 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces First Fiscal Quarter 2023 Financial Results and Declares Increased Distribution of $0.55 Per Share LOS ANGELES, CA, February 7, 2023 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (“Oaktree Specialty Lending” or the “Company”), a specialty finance company, today announced its financial results for the fiscal quarter ended Decembe

As filed with the Securities and Exchange Commission on February 7, 2023

As filed with the Securities and Exchange Commission on February 7, 2023 Securities Act File No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

DEF 14A 1 d429066ddef14a.htm DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as

FOURTH AMENDED AND RESTATED JOINT FILING AGREEMENT

EX-99.1 Exhibit 1 FOURTH AMENDED AND RESTATED JOINT FILING AGREEMENT Pursuant to Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, each of the undersigned acknowledges and agrees that the foregoing statement on Schedule 13D is filed on behalf of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of the und

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 13)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 405 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 Sout

1301 Pennsylvania Avenue, N.W. Washington, D.C. 20004 William J. Tuttle United States To Call Writer Directly: Facsimile: +1 202 389 3350 +1 202 389 5000 +1 202 389 5200 [email protected] www.kirkland.com January 31, 2023

1301 Pennsylvania Avenue, N.W. Washington, D.C. 20004 William J. Tuttle United States To Call Writer Directly: Facsimile: +1 202 389 3350 +1 202 389 5000 +1 202 389 5200 [email protected] www.kirkland.com January 31, 2023 By EDGAR United States Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, D.C. 20549 Attn: Ashley Vroman-Lee Re: Oaktre

OCSL / Oaktree Specialty Lending Corp / TANNENBAUM LEONARD M - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 24)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securiti

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defi

William J. Tuttle To Call Writer Directly: +1 202 389 3350

William J. Tuttle To Call Writer Directly: +1 202 389 3350 [email protected] 1301 Pennsylvania Avenue, N.W. Washington, D.C. 20004 United States +1 202 389 5000 www.kirkland.com Facsimile: +1 202 389 5200 January 24, 2023 By EDGAR United States Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, D.C. 20549 Re: Oaktree Specialty Lending Corp

Fourth Amendment to Loan and Security Agreement, dated as of March 31, 2021, by and among the Registrant (as successor-in-interest by merger to Oaktree Strategic Income II, Inc.), OSI 2 Senior Lending SPV, LLC, and Citibank, N.A.

Exhibit 10.6 EXECUTION VERSION FOURTH AMENDMENT TO LOAN AND SECURITY AGREEMENT THIS FOURTH AMENDMENT TO THE LOAN AND SECURITY AGREEMENT (this “Amendment”), is made as of March 31, 2021, by and among OAKTREE STRATEGIC INCOME II, INC., as the collateral manager (in such capacity, the “Collateral Manager”), OSI 2 SENIOR LENDING SPV, LLC, as the borrower (the “Borrower”), Citibank, N.A., as administra

Opinion and Consent of Kirkland & Ellis LLP supporting tax matters and consequences to stockholders discussed in the joint proxy statement/prospectus. *

EX-(12)(a) Exhibit 12(a) 601 Lexington Avenue New York, New York 10022 Facsimile: (212) 446-4800 (212) 446-4900 www.

Opinion and Consent of Sullivan & Cromwell LLP supporting tax matters and consequences to stockholders discussed in the joint proxy statement/prospectus. *

EX-(12)(b) Exhibit 12(b) January 23, 2023 Oaktree Strategic Income II, Inc., 333 South Grand Avenue, 28th Floor, Los Angeles, CA 90071. Ladies and Gentlemen: We have acted as counsel to Oaktree Strategic Income II, Inc., a Delaware Corporation (the “Fund”), pursuant to the Agreement and Plan of Merger, dated as of September 14, 2022 (the “Merger Agreement”), among the Fund, Oaktree Specialty Lendi

Third Amendment to Loan and Security Agreement, dated as of December 31, 2020, by and among the Registrant (as successor-in-interest by merger to Oaktree Strategic Income II, Inc.), OSI 2 Senior Lending SPV, LLC, and Citibank, N.A.

Exhibit 10.5 EXECUTION VERSION THIRD AMENDMENT TO LOAN AND SECURITY AGREEMENT THIS THIRD AMENDMENT TO THE LOAN AND SECURITY AGREEMENT(this “Amendment”), is made as of December 31, 2020, by and among OAKTREE STRATEGIC INCOME II, INC., as the collateral manager (in such capacity, the “Collateral Manager”), OSI 2 SENIOR LENDING SPV, LLC, as the borrower (the “Borrower”), Citibank, N.A., as administra

Oaktree Specialty Lending Corporation Completes Merger with Oaktree Strategic Income II, Inc.

Exhibit 99.1 Oaktree Specialty Lending Corporation Completes Merger with Oaktree Strategic Income II, Inc. LOS ANGELES, CA, January 23, 2023 – Oaktree Specialty Lending Corporation (NASDAQ:OCSL) (“OCSL”) is pleased to announce the closing of the previously announced merger with Oaktree Strategic Income II, Inc. (“OSI II”), with OCSL as the surviving company. Based on December 31, 2022 financial in

As filed with the Securities and Exchange Commission on January 23, 2023

As filed with the Securities and Exchange Commission on January 23, 2023 Registration No.

Fifth Amendment to Loan and Security Agreement, dated as of December 2, 2022, by and among the Registrant (as successor-in-interest by merger to Oaktree Strategic Income II, Inc.), OSI 2 Senior Lending SPV, LLC, and Citibank, N.A.

Exhibit 10.7 FIFTH AMENDMENT TO LOAN AND SECURITY AGREEMENT THIS FIFTH AMENDMENT TO THE LOAN AND SECURITY AGREEMENT (this “Amendment”), is made as of December 2, 2022, by and among OAKTREE STRATEGIC INCOME II, INC., as the collateral manager (in such capacity, the “Collateral Manager”), OSI 2 SENIOR LENDING SPV, LLC, as the borrower (the “Borrower”), Citibank, N.A., as administrative agent (the “A

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 23, 2023 (January 23, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdic

Loan and Security Agreement, dated as of July 26, 2019, by and among the Registrant (as successor-in-interest by merger to Oaktree Strategic Income II, Inc.), OSI 2 Senior Lending SPV, LLC, each of the lenders from time to time party thereto, Citibank, N.A. and Deutsche Bank Trust Company Americas.

Exhibit 10.2 Execution Version $100,000,000 LOAN AND SECURITY AGREEMENT by and among OAKTREE STRATEGIC INCOME II, INC. , ( Collateral Manager ) OSI 2 SENIOR LENDING SPV, LLC, ( Borrower ) OAKTREE STRATEGIC INCOME II, INC., ( Seller ) EACH OF THE LENDERS FROM TIME TO TIME PARTY HERETO , ( Lenders ) CITIBANK, N.A. , ( Administrative Agent ) and DEUTSCHE BANK TRUST COMPANY AMERICAS, ( Collateral Agen

Second Amended and Restated Investment Advisory Agreement, dated as of January 23, 2023, between the Registrant and Oaktree Fund Advisors, LLC.

Exhibit 10.1 SECOND AMENDED AND RESTATED INVESTMENT ADVISORY AGREEMENT BETWEEN OAKTREE SPECIALTY LENDING CORPORATION AND OAKTREE FUND ADVISORS, LLC This Second Amended and Restated Investment Advisory Agreement (this “Agreement”) made effective as of January 23, 2023 (the “Effective Date”), by and between OAKTREE SPECIALTY LENDING CORPORATION, a Delaware corporation (the “Company”), and OAKTREE FU

Second Amendment to Loan and Security Agreement, dated as of July 2, 2020, by and among the Registrant (as successor-in-interest by merger to Oaktree Strategic Income II, Inc.), OSI 2 Senior Lending SPV, LLC, each of the lenders from time to time party thereto, and Citibank, N.A.

Exhibit 10.4 Execution Version SECOND AMENDMENT TO LOAN AND SECURITY AGREEMENT THIS SECOND AMENDMENT TO THE LOAN AND SECURITY AGREEMENT (this “Amendment”), is made as of July 2, 2020, by and among OAKTREE STRATEGIC INCOME II, INC., as the collateral manager (in such capacity, the “Collateral Manager”), OSI 2 SENIOR LENDING SPV, LLC, as the borrower (the “Borrower”), Citibank, N.A., as administrati

First Amendment to Loan and Security Agreement, dated as of September 20, 2019, by and among the Registrant (as successor-in-interest by merger to Oaktree Strategic Income II, Inc.), OSI 2 Senior Lending SPV, LLC, each of the lenders from time to time party thereto, Citibank, N.A. and Deutsche Bank Trust Company Americas.

Exhibit 10.3 EXECUTION VERSION FIRST AMENDMENT TO LOAN AND SECURITY AGREEMENT THIS FIRST AMENDMENT TO THE LOAN AND SECURITY AGREEMENT (this “Amendment”), is made as of September 20, 2019, by and among OAKTREE STRATEGIC INCOME II, INC., as the collateral manager (in such capacity, the “Collateral Manager”), OSI 2 SENIOR LENDING SPV, LLC, as the borrower (the “Borrower”), Citibank, N.A., as administ

Certificate of Amendment to the Registrant’s Certificate of Incorporation (incorporated by reference to Exhibit 3.7 filed with the Registrant’s Current Report on Form 8-K (File No. 001-33901) filed on January 20, 2023).

EX-3.7 Exhibit 3.7 CERTIFICATE OF AMENDMENT TO THE RESTATED CERTIFICATE OF INCORPORATION OF OAKTREE SPECIALTY LENDING CORPORATION Oaktree Specialty Lending Corporation. (the “Corporation”), a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the “DGCL”), does hereby certify as follows: FIRST: The Corporation’s Restated Certificate of In

Oaktree Specialty Lending Corporation and Oaktree Strategic Income II, Inc. Announce Stockholder Approvals of Merger

EX-99.1 Exhibit 99.1 Oaktree Specialty Lending Corporation and Oaktree Strategic Income II, Inc. Announce Stockholder Approvals of Merger LOS ANGELES, CA, January 20, 2023 – Oaktree Specialty Lending Corporation (NASDAQ:OCSL) (“OCSL”) and Oaktree Strategic Income II, Inc. (“OSI II”) today announced that each company obtained stockholder approval of the proposals related to the previously announced

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 20, 2023 (January 20, 202

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 20, 2023 (January 20, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdic

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 20, 2023 (January 20, 202

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): January 20, 2023 (January 20, 2023) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdic

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 10, 2023 Oaktree Specialt

Filed by Oaktree Specialty Lending Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Oaktree Strategic Income II, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 10, 2023 Oaktree Specialt

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 10, 2023 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporati

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 12)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 108 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 Sout

OCSL / Oaktree Specialty Lending Corp / TANNENBAUM LEONARD M - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO ? 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 23)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securiti

MERGER PROPOSED – YOUR VOTE IS VERY IMPORTANT Our Board of Directors unanimously recommends that you respond to this solicitation by voting FOR each of the proposals described in the enclosed proxy materials.

Filed by Oaktree Specialty Lending Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-6(b) of the Securities Exchange Act of 1934 Subject Company: Oaktree Strategic Income II, Inc.

OAKTREE SPECIALTY LENDING CORPORATION 333 South Grand Avenue, 28th Floor Los Angeles, CA 90071 MERGER PROPOSED — YOUR VOTE IS VERY IMPORTANT

Filed pursuant to Rule 424(b)(3) File No. 333-267988 OAKTREE SPECIALTY LENDING CORPORATION 333 South Grand Avenue, 28th Floor Los Angeles, CA 90071 MERGER PROPOSED ? YOUR VOTE IS VERY IMPORTANT November 30, 2022 Dear Stockholder: You are cordially invited to attend the 2023 Annual Meeting of Stockholders (the ?OCSL Annual Meeting?) of Oaktree Specialty Lending Corporation, a Delaware corporation (

Consent of Keefe, Bruyette and Woods, Inc. *

EX-99-(17)(d) CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to (i) the special committee of the Board of Directors (the “Board”) of Oaktree Strategic Income II, Inc. (“OSI2”) and (ii) the Board of OSI2, as Annex C to the Joint Proxy Statement/Prospectus which forms a part of Pre-Effective Amendment No. 1 to the Registration Statement on Form N-14

Consent of Ernst & Young LLP (Oaktree Strategic Income II, Inc.) *

EX-99.(14)(b) Exhibit 14(b) Consent of Independent Registered Public Accounting Firm We consent to the reference to our firm under the caption “Experts” in the Joint Proxy Statement/Prospectus, dated November 28, 2022, and included in this Registration Statement (Form N-14 No. 333-267988) of Oaktree Specialty Lending Corporation (the “Registration Statement”). We also consent to the incorporation

Consent of Houlihan Lokey Capital, Inc. *

EX-99.(17)(c) CONSENT OF HOULIHAN LOKEY CAPITAL, INC. November 28, 2022 Oaktree Specialty Lending Corporation 333 South Grand Ave, 28th Floor Los Angeles, CA 90071 Attn: The Special Committee of the Board of Directors RE: Joint Proxy Statement of Oaktree Specialty Lending Corporation (“OCSL”) and Oaktree Strategic Income II, Inc. (“OSI2”) / Prospectus of OCSL which forms part of the Registration S

Form of Opinion and Consent of Sullivan & Cromwell LLP supporting tax matters and consequences to stockholders discussed in the joint proxy statement/prospectus.

EX-99.(12)(b) [S&C Letterhead] [•], 2022 Oaktree Strategic Income II, Inc. 333 South Grand Avenue, 28th Floor Los Angeles, CA 90071 Ladies and Gentlemen: We have acted as counsel to Oaktree Strategic Income II, Inc., a Delaware Corporation (the “Fund”), pursuant to the Agreement and Plan of Merger, dated as of September 14, 2022 (the “Merger Agreement”), among the Fund, Oaktree Specialty Lending C

Form of Opinion and Consent of Kirkland & Ellis LLP supporting tax matters and consequences to stockholders discussed in the joint proxy statement/prospectus.

EX-99.(12)(a) 601 Lexington Avenue New York, New York 10022 (212) 446-4800 www.kirkland.com Facsimile: (212) 446-4900 [•], 2022 Oaktree Specialty Lending Corporation 333 South Grand Avenue, 28th Floor Los Angeles, CA 90071 Ladies and Gentlemen: We have acted as counsel for you, Oaktree Specialty Lending Corporation, a Delaware corporation (the “Acquiring Fund”), pursuant to the Agreement and Plan

Consent of Ernst & Young LLP (Oaktree Specialty Lending Corporation) *

EX-99.(14)(a) Exhibit 14(a) Consent of Independent Registered Public Accounting Firm We consent to the reference to our firm under the caption “Experts” in the Joint Proxy Statement/Prospectus, dated November 28, 2022, and included in this Registration Statement (Form N-14 No. 333-267988) of Oaktree Specialty Lending Corporation (the “Registration Statement”). We also consent to the incorporation

As filed with the Securities and Exchange Commission on November 28, 2022

N-14 8C/A As filed with the Securities and Exchange Commission on November 28, 2022 Registration No.

Filed by Oaktree Specialty Lending Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Oaktree Strategic Income II, Inc. File No. of Related Regi

425 1 d417781d425.htm 425 Filed by Oaktree Specialty Lending Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Oaktree Strategic Income II, Inc. File No. of Related Registration Statement: 333-267988 fourth quarter 2022 investor presentation nasdaq: ocsl Forward Looking Statements & Legal Dis

2

Filed by Oaktree Specialty Lending Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Oaktree Strategic Income II, Inc.

Forward Looking Statements & Legal Disclosures (continued) Calculation of Assets Under Management References to total assets under management or AUM represent assets managed by Oaktree and a proportionate amount of the AUM reported by DoubleLine Capi

Exhibit 99.2 fourth quarter 2022 earnings presentation november 15, 2022 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our fu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 15, 2022 Oaktree Special

Filed by Oaktree Specialty Lending Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Oaktree Strategic Income II, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2022 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 15, 2022 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporat

Letter Agreement, dated as of September 14, 2022, by and between the Registrant and Oaktree Fund Advisors, LLC (incorporated by reference to Exhibit 10.22 filed with the Registrant’s Annual Report on Form 10-K (File No. 814-00755) filed on November 15, 2022).

Exhibit 10.22 LETTER AGREEMENT September 14, 2022 Oaktree Specialty Lending Corporation (the ?Company?) 333 South Grand Avenue, 28th Floor Los Angeles, California 90071 Re: Fee Waiver Agreement This Letter Agreement documents an undertaking by Oaktree Fund Advisors, LLC (the ?Adviser?) to waive certain management fees payable to it by the Company pursuant to the Amended and Restated Investment Adv

Joint Code of Ethics of the Registrant, Oaktree Strategic Income II, Inc. and Oaktree Strategic Credit Fund (incorporated by reference to Exhibit 14.1 filed with the Registrant’s Form 10-K (File No. 814-00755) filed on November 14, 2022).

Exhibit 14.1 OAKTREE SPECIALTY LENDING CORPORATION OAKTREE STRATEGIC INCOME II, INC. OAKTREE STRATEGIC CREDIT FUND CODE OF ETHICS I. INTRODUCTION This Code of Ethics (the ?Code?) has been adopted pursuant to Rule 17j-1 under the Investment Company Act of 1940, as amended (the ?Investment Company Act?). Under Rule 17j-1, which applies to BDCs pursuant to Section 59 of the Investment Company Act, ea

DESCRIPTION OF SECURITIES

Exhibit 4.2 DESCRIPTION OF SECURITIES Capitalized terms used but not defined herein shall have the meaning ascribed to them in the Annual Report on Form 10-K to which this Description of Securities is an exhibit. (a)Common Stock, $0.01 par value per share Our authorized capital stock consists of 250,000,000 shares of common stock, par value $0.01 per share, of which 183,374,250 shares were outstan

Oaktree Specialty Lending Corporation Announces Fourth Fiscal Quarter and Full Year 2022 Financial Results and Declares Increased Quarterly Distribution of $0.18 Per Share and Special Distribution of $0.14 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Fourth Fiscal Quarter and Full Year 2022 Financial Results and Declares Increased Quarterly Distribution of $0.18 Per Share and Special Distribution of $0.14 Per Share LOS ANGELES, CA, November 15, 2022 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (?Oaktree Specialty Lending? or the ?Company?), a specialty finance company, toda

Consent of Ernst & Young LLP (Oaktree Strategic Income II, Inc.) *

Exhibit 14(b) Consent of Independent Registered Public Accounting Firm We consent to the reference to our firm under the caption ?Experts? in the Joint Proxy Statement/Prospectus, dated October 21, 2022, and included in this Registration Statement (Form N-14) of Oaktree Specialty Lending Corporation (the ?Registration Statement?).

Consent of Ernst & Young LLP (Oaktree Specialty Lending Corporation) *

Exhibit 14(a) Consent of Independent Registered Public Accounting Firm We consent to the reference to our firm under the caption ?Experts? in the Joint Proxy Statement/Prospectus, dated October 21, 2022, and included in this Registration Statement (Form N-14) of Oaktree Specialty Lending Corporation (the ?Registration Statement?).

Consent of Houlihan Lokey Capital, Inc. *

CONSENT OF HOULIHAN LOKEY CAPITAL, INC. October 21, 2022 Oaktree Specialty Lending Corporation 333 South Grand Ave, 28th Floor Los Angeles, CA 90071 Attn: The Special Committee of the Board of Directors RE: Joint Proxy Statement of Oaktree Specialty Lending Corporation (?OCSL?) and Oaktree Strategic Income II, Inc. (?OSI2?) / Prospectus of OCSL which forms part of the Registration Statement on For

Consent of Keefe, Bruyette and Woods, Inc. *

CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to (i) the special committee of the Board of Directors (the ?Board?) of Oaktree Strategic Income II, Inc. (?OSI2?) and (ii) the Board of OSI2, as Annex C to the Joint Proxy Statement/Prospectus which forms a part of the Registration Statement on Form N-14 filed on the date hereof (the ?Registration St

Filing Fees Table *

Exhibit 18 Calculation of Filing Fee Tables Form N-14 ????.. (Form Type) Oaktree Specialty Lending Corporation ????????????????????..? (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Regist

Form of Proxy Card of Oaktree Specialty Lending Corporation. *

SCAN TO OAKTREE SPECIALTY LENDING CORPORATION VIEW MATERIALS & VOTE w 333 SOUTH GRAND AVENUE, 28TH FLOOR LOS ANGELES, CA 90071 VOTE BY INTERNET Before The Meeting - Go to www.

As filed with the Securities and Exchange Commission on October 21, 2022

As filed with the Securities and Exchange Commission on October 21, 2022 Registration No.

Opinion and Consent of Kirkland & Ellis LLP with respect to the legality of shares. *

1301 Pennsylvania Avenue, N.W. Washington, D.C. 20004 United States +1 202 389 5000 www.kirkland.com Facsimile: +1 202 389 5200 October 21, 2022 Oaktree Specialty Lending Corporation 333 South Grand Ave., 28th Floor Los Angeles, CA 90071 Re: Registration Statement on Form N-14 We are issuing this opinion in our capacity as special counsel to Oaktree Specialty Lending Corporation, a Delaware corpor

Form of Proxy Card of Oaktree Strategic Income II, Inc. *

SCAN TO VIEW MATERIALS & VOTE OAKTREE STRATEGIC INCOME II, INC. C/O OAKTREE CAPITAL MANAGEMENT, L.P. 333 SOUTH GRAND AVENUE, 28TH FLOOR LOS ANGELES, CA 90071 VOTE BY INTERNET Before The Meeting - Go to www.proxyvote.com or scan the QR Barcode above Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 p.m. Eastern Time the day before the cu

1

Filed by Oaktree Specialty Lending Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Oaktree Strategic Income II, Inc.

Agreement and Plan of Merger among Oaktree Strategic Income II, Inc., the Registrant, Project Superior Merger Sub, Inc. and Oaktree Fund Advisors, LLC (for the limited purposes set forth therein), dated as of September 14, 2022 (Incorporated by reference to Exhibit 2.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-00755) filed on September 15, 2022).

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER among OAKTREE STRATEGIC INCOME II, INC., OAKTREE SPECIALTY LENDING CORPORATION, PROJECT SUPERIOR MERGER SUB, INC. and OAKTREE FUND ADVISORS, LLC (for the limited purposes set forth herein) Dated as of September 14, 2022 TABLE OF CONTENTS Page ARTICLE I THE MERGER 2 1.1 The Merger 2 1.2 Closing 2 1.3 Effective Time 2 1.4 Effects of the Merger 2 1.5 Conversio

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 15, 2022 (September 14, 2022) Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other juri

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events, future performance or financial condition or the two-step merger (collectively, the

Exhibit 99.2 september 15, 2022 merger of oaktree specialty lending corporation (nasdaq: ocsl) and oaktree strategic income ii, inc. (?osi ii?) Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events, future performance or financial condition or the two-step merger (collectively, the ?Merg

Oaktree Specialty Lending Corporation and Oaktree Strategic Income II, Inc. Enter into Merger Agreement

Exhibit 99.1 Oaktree Specialty Lending Corporation and Oaktree Strategic Income II, Inc. Enter into Merger Agreement LOS ANGELES, CA, September 15, 2022 ? Oaktree Specialty Lending Corporation (NASDAQ:OCSL) (?OCSL?) and Oaktree Strategic Income II, Inc. (?OSI II?) today announced that they have entered into an agreement to merge together with OCSL as the surviving company, subject to stockholder a

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 15, 2022 (September 14,

Filed by Oaktree Specialty Lending Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Oaktree Strategic Income II, Inc.

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 11)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 108 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 Sout

OCSL / Oaktree Specialty Lending Corp / TANNENBAUM LEONARD M - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO ? 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 22)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securiti

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2022 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) DELAWARE (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements con

Exhibit 99.2 third quarter 2022 earnings presentation august 4, 2022 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our future

Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2022 Financial Results and Declares Increased Distribution of $0.17 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2022 Financial Results and Declares Increased Distribution of $0.17 Per Share LOS ANGELES, CA, August 4, 2022 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (?Oaktree Specialty Lending? or the ?Company?), a specialty finance company, today announced its financial results for the fiscal quarter ended June 30,

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements con

Exhibit 99.2 second quarter 2022 earnings presentation may 5, 2022 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our future o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) DELAWARE (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2022 Financial Results and Declares Increased Distribution of $0.165 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2022 Financial Results and Declares Increased Distribution of $0.165 Per Share LOS ANGELES, CA, May 5, 2022 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (?Oaktree Specialty Lending? or the ?Company?), a specialty finance company, today announced its financial results for the fiscal quarter ended March 31,

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2022 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation) (

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 10)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 108 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 South Grand A

THIRD AMENDED AND RESTATED JOINT FILING AGREEMENT

Exhibit 1 THIRD AMENDED AND RESTATED JOINT FILING AGREEMENT Pursuant to Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, each of the undersigned acknowledges and agrees that the foregoing statement on Schedule 13D is filed on behalf of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of the undersigned without the necessity of filing additional joint acquisition statements.

OCSL / Oaktree Specialty Lending Corp / TANNENBAUM LEONARD M - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO ? 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 21)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securiti

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 7, 2022 (March 4, 2022) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

Equity Distribution Agreement, dated February 7, 2022, by and among Oaktree Specialty Lending Corporation, Oaktree Fund Advisors, LLC, Oaktree Fund Administration, LLC, Keefe, Bruyette & Woods, Inc., JMP Securities LLC, Raymond James & Associates, Inc. and SMBC Nikko Securities America, Inc.

Exhibit 1.1 Oaktree Specialty Lending Corporation Shares of Common Stock, par value $0.01 per share Equity Distribution Agreement February 7, 2022 Keefe, Bruyette & Woods, Inc. JMP Securities LLC Raymond James & Associates, Inc. SMBC Nikko Securities America, Inc. c/o Keefe, Bruyette & Woods, Inc. 787 Seventh Avenue, 4th Floor New York, New York 10019 c/o JMP Securities LLC 600 Montgomery Street,

$125,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-234798 PROSPECTUS SUPPLEMENT (To Prospectus dated January 13, 2020) $125,000,000 OAKTREE SPECIALTY LENDING CORPORATION Common Stock We are a specialty finance company that looks to provide customized, one-stop credit solutions to companies with limited access to public or syndicated capital markets. We are a closed-end, extern

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 7, 2022 (February 7, 2022) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdic

Oaktree Specialty Lending Corporation Announces First Fiscal Quarter 2022 Financial Results and Declares Increased Distribution of $0.16 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces First Fiscal Quarter 2022 Financial Results and Declares Increased Distribution of $0.16 Per Share LOS ANGELES, CA, February 3, 2022 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (?Oaktree Specialty Lending? or the ?Company?), a specialty finance company, today announced its financial results for the fiscal quarter ended Decembe

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 3, 2022 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporati

SEVENTH AMENDMENT TO AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

Exhibit 10.1 EXECUTION VERSION SEVENTH AMENDMENT TO AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT THIS SEVENTH AMENDMENT TO THE AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT (this ?Amendment?), is made as of November 18, 2021, by and among Oaktree Specialty Lending Corporation, as the collateral manager (together with its permitted successors and assigns, the ?Collateral Manager?), OCSL Seni

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements con

Exhibit 99.2 first quarter 2022 earnings presentation february 3, 2022 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements contained in this presentation may include statements as to: our futu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2021 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) DELAWARE (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Schedule 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

Schedule 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defi

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 108 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 South

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

OCSL / Oaktree Specialty Lending Corp / TANNENBAUM LEONARD M - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO ? 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 20)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securiti

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defi

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 13, 2021 (December 10, 2021) Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisd

Incremental Commitment Agreement, dated as of December 10, 2021, made by Oaktree Specialty Lending Corporation, as Borrower, BNP Paribas, as assuming lender, and ING Capital LLC, as administrative agent and issuing bank relating to the Amended and Restated Senior Secured Revolving Credit Agreement, dated as of February 25, 2019 among Oaktree Specialty Lending Corporation, as Borrower, the lenders party thereto, ING Capital LLC, as administrative agent, ING Capital LLC, JPMorgan Chase Bank, N.A. and Merrill Lynch, Pierce, Fenner & Smith Incorporated as joint lead arrangers and joint bookrunners, and JPMorgan Chase Bank, N.A. and Bank of America, N.A., as syndication agents (Incorporated by reference to Exhibit 10.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on December 13, 2021).

Exhibit 10.1 EXECUTION VERSION INCREMENTAL COMMITMENT AND ASSUMPTION AGREEMENT dated as of December 10, 2021, made by OAKTREE SPECIALTY LENDING CORPORATION as Borrower THE ASSUMING LENDER PARTY HERETO, as Assuming Lender, and ING CAPITAL LLC as Administrative Agent and Issuing Bank relating to the AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT dated as of February 25, 2019, among O

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 22, 2021 (November 18, 2021) Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisd

Seventh Amendment to the Amended and Restated Loan and Security Agreement by and among the Registrant, as collateral manager, OCSL Senior Funding II LLC, as borrower, and Citibank, N.A., as administrative agent and sole lender, dated as of July 2, 2021 (Incorporated by reference to Exhibit 10.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-00755) filed on November 22, 2021).

Exhibit 10.1 EXECUTION VERSION SEVENTH AMENDMENT TO AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT THIS SEVENTH AMENDMENT TO THE AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT (this ?Amendment?), is made as of November 18, 2021, by and among Oaktree Specialty Lending Corporation, as the collateral manager (together with its permitted successors and assigns, the ?Collateral Manager?), OCSL Seni

DESCRIPTION OF SECURITIES

Exhibit 4.2 DESCRIPTION OF SECURITIES Capitalized terms used but not defined herein shall have the meaning ascribed to them in the Annual Report on Form 10-K to which this Description of Securities is an exhibit. a.Common Stock, $0.01 par value per share Our authorized capital stock consists of 250,000,000 shares of common stock, par value $0.01 per share, of which 180,360,662 shares were outstand

Oaktree Specialty Lending Corporation Announces Fourth Fiscal Quarter and Full Year 2021 Financial Results and Declares Increased Distribution of $0.155 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Fourth Fiscal Quarter and Full Year 2021 Financial Results and Declares Increased Distribution of $0.155 Per Share LOS ANGELES, CA, November 16, 2021 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (?Oaktree Specialty Lending? or the ?Company?), a specialty finance company, today announced its financial results for the fiscal quar

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 16, 2021 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2021 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) DELAWARE (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements co

Exhibit 99.2 fourth quarter 2021 earnings presentation november 16, 2021 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward- looking statements contained in this presentation may include statements as to: our f

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 5, 2021 (October 1, 2021) Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdicti

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 23, 2021 (September 22, 2021) Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other juri

OCSL / Oaktree Specialty Lending Corp / TANNENBAUM LEONARD M - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 19)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securiti

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 108 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 South Grand Av

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2021 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2021 Financial Results and Declares Increased Distribution of $0.145 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Third Fiscal Quarter 2021 Financial Results and Declares Increased Distribution of $0.145 Per Share LOS ANGELES, CA, August 5, 2021 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (?Oaktree Specialty Lending? or the ?Company?), a specialty finance company, today announced its financial results for the fiscal quarter ended June 30,

Amendment No. 4 to Amended and Restated Senior Secured Revolving Credit Agreement and Amendment No. 1 to Amended and Restated Guarantee, Pledge and Security Agreement, dated May 4, 2021, among the Registrant, as borrower, OCSL SRNE, LLC, as subsidiary guarantor, FSFC Holdings, Inc., as subsidiary guarantor, the lenders party thereto, and ING Capital LLC, as administrative agent (incorporated by reference to Exhibit 10.1 filed with the Registrant’s Form 10-Q (File No. 814-00755) filed on August 4, 2021).

EXECUTION VERSION AMENDMENT NO. 4 TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT AND AMENDMENT NO. 1 TO AMENDED AND RESTATED GUARANTEE, PLEDGE AND SECURITY AGREEMENT This AMENDMENT NO. 4 TO AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT AND AMENDMENT NO. 1 TO AMENDED AND RESTATED GUARANTEE, PLEDGE AND SECURITY AGREEMENT (this ?Agreement?), dated as of May 4, 2021

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2021 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q

10-Q 1 ocsl-06302021x10xq.htm 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Speci

OAKTREE OCSL Specialty Lending Corporation THIRD QUARTER 2021 AUGUST 5, 2021 EARNINGS PRESENTATION NASDAQ: OCSL

Exhibit 99.2 OAKTREE OCSL Specialty Lending Corporation THIRD QUARTER 2021 AUGUST 5, 2021 EARNINGS PRESENTATION NASDAQ: OCSL OAKTREE OCSL Specialty Lending Corporation Forward Looking Statements Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements conta

Sixth Amendment to the Amended and Restated Loan and Security Agreement by and among the Registrant, as collateral manager, OCSL Senior Funding II LLC, as borrower, and Citibank, N.A., as administrative agent and sole lender, dated as of July 2, 2021 (incorporated by reference to Exhibit 10.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-00755) filed on July 9, 2021).

Exhibit 10.1 EXECUTION VERSION SIXTH AMENDMENT TO AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT THIS SIXTH AMENDMENT TO THE AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT (this ?Amendment?), is made as of July 2, 2021, by and among Oaktree Specialty Lending Corporation, as the collateral manager (together with its permitted successors and assigns, the ?Collateral Manager?), OCSL Senior Fundin

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 9, 2021 (July 2, 2021) Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of

OCSL / Oaktree Specialty Lending Corp / OAKTREE CAPITAL MANAGEMENT LP - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 108 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 South Grand Av

OCSL / Oaktree Specialty Lending Corp / TANNENBAUM LEONARD M - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO ? 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 18)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securiti

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 18, 2021 Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation)

Sixth Supplemental Indenture, dated as of May 18, 2021, relating to the 2.700% Notes due 2027, between the Registrant and Deutsche Bank Trust Company Americas, as trustee (incorporated by reference to Exhibit 4.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-00755) filed on May 18, 2021).

Exhibit 4.1 SIXTH SUPPLEMENTAL INDENTURE between OAKTREE SPECIALTY LENDING CORPORATION and DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee Dated as of May 18, 2021 SIXTH SUPPLEMENTAL INDENTURE THIS SIXTH SUPPLEMENTAL INDENTURE (this ?Sixth Supplemental Indenture?), dated as of May 18, 2021, is between Oaktree Specialty Lending Corporation, a Delaware corporation (the ?Company?), and Deutsche Bank

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 12, 2021 (May 11, 2021) Oaktree Specialty Lending Corporation (Exact name of Registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of

Oaktree Specialty Lending Corporation 2.700% Notes due 2027 PRICING TERM SHEET May 11, 2021

Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated May 11, 2021 Relating to Preliminary Prospectus Supplement dated May 11, 2021 and Prospectus dated January 13, 2020 Registration No.

$350,000,000 Oaktree Specialty Lending Corporation 2.700% Notes due 2027

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration Statement No. 333-234798 PROSPECTUS SUPPLEMENT (to Prospectus dated January 13, 2020) $350,000,000 Oaktree Specialty Lending Corporation 2.700% Notes due 2027 We are offering $350,000,000 in aggregate principal amount of 2.700% notes due 2027, which we refer to as the Notes. The Notes will mature on January 15, 2027. We will pay inter

Underwriting Agreement, dated May 11, 2021, by and among Oaktree Specialty Lending Corporation, Oaktree Fund Advisors, LLC, Oaktree Fund Administration, LLC, RBC Capital Markets, LLC, Citigroup Global Markets Inc., Deutsche Bank Securities Inc. and SMBC Nikko Securities America, Inc.

Exhibit 1.1 EXECUTION VERSION Oaktree Specialty Lending Corporation $350,000,000 Aggregate Principal Amount of Notes due 2027 Underwriting Agreement May 11, 2021 RBC Capital Markets, LLC Citigroup Global Markets Inc. Deutsche Bank Securities Inc. SMBC Nikko Securities America, Inc. c/o RBC Capital Markets, LLC 200 Vesey Street, 8th Floor New York, New York 10281 Citigroup Global Markets Inc. 388 G

SUBJECT TO COMPLETION, DATED MAY 11, 2021

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration Statement No. 333-234798 This preliminary prospectus supplement relates to an effective registration statement under the Securities Act of 1933, but is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell and are not soliciting offers to buy these securities i

Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2021 Financial Results and Declares Increased Distribution of $0.13 Per Share

Exhibit 99.1 Oaktree Specialty Lending Corporation Announces Second Fiscal Quarter 2021 Financial Results and Declares Increased Distribution of $0.13 Per Share LOS ANGELES, CA, May 6, 2021 - Oaktree Specialty Lending Corporation (NASDAQ: OCSL) (?Oaktree Specialty Lending? or the ?Company?), a specialty finance company, today announced its financial results for the fiscal quarter ended March 31, 2

Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking statements con

Exhibit 99.2 second quarter 2021 earnings presentation may 6, 2021 nasdaq: ocslExhibit 99.2 second quarter 2021 earnings presentation may 6, 2021 nasdaq: ocsl Forward Looking Statements & Legal Disclosures Some of the statements in this presentation constitute forward-looking statements because they relate to future events or our future performance or financial condition. The forward-looking state

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER: 1-33901 Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) DELAWARE (State or jurisdiction of incorporation or organization) 26-1219283 (I.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2021 Oaktree Specialty Lending Corporation (Exact name of registrant as specified in its charter) Delaware 814-00755 26-1219283 (State or other jurisdiction of incorporation) (

ARTICLE I.

Exhibit 10.18 EXECUTION VERSION OMNIBUS AMENDMENT TO WAREHOUSE DOCUMENTS, dated as of March 19, 2021 (this ?Amendment?), among OCSI Senior Funding Ltd., as borrower (the ?Borrower?), Oaktree Specialty Lending Corporation, as servicer (the ?Servicer?), and Deutsche Bank AG, New York Branch (?DBNY?), as facility agent (in such capacity, the ?Facility Agent?) and as a committed lender (in such capaci

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 17)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securiti

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6)* Oaktree Specialty Lending Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 67401P 108 (CUSIP Number) Todd E. Molz Managing Director and General Counsel Oaktree Capital Management, L.P. 333 South

Amendment No. 1 to Loan Financing and Servicing Agreement, dated as of March 13, 2019, among OCSI Senior Funding Ltd., as borrower, the Registrant, as servicer, and Deutsche Bank AG, New York Branch as facility agent and as committed lender.

Exhibit 10.11 EXECUTION VERSION AMENDMENT NO. 1 TO LOAN FINANCING AND SERVICING AGREEMENT, dated as of March 13, 2019 (this ?Amendment?), among OCSI Senior Funding Ltd., as borrower (the ?Borrower?), Oaktree Strategic Income Corporation, as servicer (the ?Servicer?) and Deutsche Bank AG, New York Branch (?DBNY?), as facility agent (in such capacity, the ?Facility Agent?) and as a committed lender

- POS EX

As filed with the Securities and Exchange Commission on March 19, 2021 Registration No.

Oaktree Specialty Lending Corporation Completes Merger with Oaktree Strategic Income Corporation

Exhibit 99.1 Oaktree Specialty Lending Corporation Completes Merger with Oaktree Strategic Income Corporation LOS ANGELES, CA, March 19, 2021 ? Oaktree Specialty Lending Corporation (NASDAQ:OCSL) (?OCSL?) is pleased to announce the closing of the previously announced merger with Oaktree Strategic Income Corporation (?OCSI?), with OCSL as the surviving company. Based on December 31, 2020 financial

Second Amendment to the Amended and Restated Loan and Security Agreement by and among Registrant, as collateral manager, OCSL Senior Funding II LLC (formerly OCSI Senior Funding II LLC), as borrower, and Citibank, N.A., as administrative agent and sole lender, dated as of July 18, 2018 (incorporated by reference to Exhibit 10.5 filed with the Registrant’s Current Report on Form 8-K (File No. 814-00755) filed on March 19, 2021).

Exhibit 10.5 Execution Version SECOND AMENDMENT TO AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT THIS SECOND AMENDMENT TO THE AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT (this ?Amendment?), is made as of July 18, 2018, by and among Oaktree Strategic Income Corporation, as the collateral manager (in such capacity, the ?Collateral Manager?), OCSI Senior Funding II LLC, as the borrower (the ?