CGEM / Cullinan Therapeutics, Inc. - Pemfailan SEC, Laporan Tahunan, Penyata Proksi

Cullinan Therapeutics, Inc.
US ˙ NasdaqGS ˙ US2300311063

Statistik Asas
CIK 1789972
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Cullinan Therapeutics, Inc.
SEC Filings (Chronological Order)
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September 4, 2025 EX-99.1

CORPORATE OVERVIEW September 2025

CORPORATE OVERVIEW September 2025 Important Notice and Disclaimers This presentation contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995.

September 4, 2025 8-K

FORM 8-K Item 7.01 Regulation FD Disclosure. Item 8.01 Other Events. Item 9.01 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): September 04, 2025 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Com

August 7, 2025 EX-10.1

License Agreement, dated as of June 4, 2025, by and between Cullinan Therapeutics, Inc. and Chongqing Genrix Biopharmaceutical Co., Ltd.

EXHIBIT 10.1 Certain identified information has been excluded from this exhibit because it is both not material and is the type that the registrant treats as private or confidential. Information that was omitted has been noted in this document with a placeholder identified by the mark “[***]”. License Agreement By And Between Cullinan Therapeutics, Inc. And Chongqing Genrix Biopharmaceutical Co.,

August 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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, 2025 OR ☐ 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: 001-39856 CULLINAN T

August 7, 2025 8-K

FORM 8-K Item 2.02 Results of Operations and Financial Condition. Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. Item 9.01 Financial Stateme

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 07, 2025 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commis

August 7, 2025 EX-99.1

Cullinan Therapeutics Provides Corporate Update and Reports Second Quarter 2025 Financial Results CLN-978 program now actively enrolling across Phase 1 studies in systemic lupus erythematosus (SLE), rheumatoid arthritis (RA) and Sjögren’s disease BCM

Exhibit 99.1 Cullinan Therapeutics Provides Corporate Update and Reports Second Quarter 2025 Financial Results CLN-978 program now actively enrolling across Phase 1 studies in systemic lupus erythematosus (SLE), rheumatoid arthritis (RA) and Sjögren’s disease BCMA-directed bispecific T cell engager velinotamig in-licensed from Genrix Bio Zipalertinib REZILIENT1 pivotal results shared in oral prese

June 12, 2025 8-K

FORM 8-K Item 5.07 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): June 12, 2025 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissi

June 4, 2025 8-K

Regulation FD Disclosure, 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): June 04, 2025 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissi

June 4, 2025 EX-99.2

Important Notice and Disclaimers This presentation contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, express or implied st

June 2025 Cullinan Therapeutics Licensing of velinotamig (BCMAxCD3) from Genrix Bio Exhibit 99.

June 4, 2025 EX-99.1

Cullinan Therapeutics Licenses Rights to Velinotamig, a Clinical-Stage BCMA-Directed Bispecific T Cell Engager, from Genrix Bio for Development in Autoimmune Diseases Advances Cullinan’s leadership in T cell engager (TCE) development for autoimmune d

Exhibit 99.1 Cullinan Therapeutics Licenses Rights to Velinotamig, a Clinical-Stage BCMA-Directed Bispecific T Cell Engager, from Genrix Bio for Development in Autoimmune Diseases Advances Cullinan’s leadership in T cell engager (TCE) development for autoimmune diseases with both a CD19 TCE and BCMA TCE in its pipeline Strengthens Cullinan portfolio of autoimmune programs with the opportunity to a

May 8, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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, 2025 OR ☐ 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: 001-39856 CULLINAN

May 8, 2025 8-K

FORM 8-K Item 2.02 Results of Operations and Financial Condition. Item 9.01 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 08, 2025 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissio

May 8, 2025 EX-99.1

Cullinan Therapeutics Provides Corporate Update and Reports First Quarter 2025 Financial Results Company received approval from European Medicines Agency (EMA) for CLN-978; Phase 1 study in active, difficult-to-treat rheumatoid arthritis to initiate

Cullinan Therapeutics Provides Corporate Update and Reports First Quarter 2025 Financial Results Company received approval from European Medicines Agency (EMA) for CLN-978; Phase 1 study in active, difficult-to-treat rheumatoid arthritis to initiate in Q2 2025 CLN-978 expands into Sjögren’s disease; Phase 1 study in active, moderate to severe patients to initiate in the U.

May 8, 2025 EX-10.1

Amendment Three to the Collaboration Agreement, dated July 11, 2024, by and between Adimab, LLC and the Registrant.

Exhibit 10.1 EXECUTION VERSION CONFIDENTIAL Portions of this Exhibit have been redacted because they are both (i) not material and (ii) would be competitively harmful if publicly disclosed. Information that was omitted has been noted in this document with a placeholder identified by the mark “[***]”. AMENDMENT THREE TO THE COLLABORATION AGREEMENT THIS AMENDMENT THREE (this “Amendment”), dated Marc

May 8, 2025 EX-10.2

Non-Employee Director Compensation Policy.

Exhibit 10.2 CULLINAN THERAPEUTICS, INC. NON-EMPLOYEE DIRECTOR COMPENSATION POLICY The purpose of this Non-Employee Director Compensation Policy (the “Policy”) of Cullinan Therapeutics, Inc. (the “Company”) is to provide a total compensation package that enables the Company to attract and retain, on a long-term basis, high-caliber directors who are not employees or officers of the Company or its s

April 25, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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 (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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

April 25, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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 (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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

February 27, 2025 S-8

As filed with the Securities and Exchange Commission on February 27, 2025

As filed with the Securities and Exchange Commission on February 27, 2025 Registration No.

February 27, 2025 EX-10.8

Amendment One to the Collaboration Agreement, dated April 30, 2024, by and between Adimab, LLC and the Registrant.

Exhibit 10.8 EXECUTION VERSION CONFIDENTIAL Portions of this Exhibit have been redacted because they are both (i) not material and (ii) would be competitively harmful if publicly disclosed. Information that was omitted has been noted in this document with a placeholder identified by the mark “[***]”. AMENDMENT ONE TO THE COLLABORATION AGREEMENT THIS AMENDMENT ONE (this “Amendment”), dated April 30

February 27, 2025 EX-21.1

List of Subsidiaries of the Registrant.

Exhibit 21.1 SUBSIDIARIES Subsidiary Jurisdiction of Organization Cullinan Amber Corp. Delaware Cullinan Florentine Corp. Delaware Cullinan Mica Corp. Delaware Cullinan Securities Corp. Massachusetts

February 27, 2025 EX-99.1

Cullinan Therapeutics Provides Corporate Update and Reports Fourth Quarter and Full Year 2024 Financial Results Initial clinical data from global Phase 1 study of CLN-978 in Systemic Lupus Erythematosus (SLE) expected in Q4 2025; CLN-978 remains the

Exhibit 99.1 Cullinan Therapeutics Provides Corporate Update and Reports Fourth Quarter and Full Year 2024 Financial Results Initial clinical data from global Phase 1 study of CLN-978 in Systemic Lupus Erythematosus (SLE) expected in Q4 2025; CLN-978 remains the first and only development-stage CD19 T cell engager in an autoimmune disease clinical trial in the U.S. Zipalertinib pivotal Phase 2b st

February 27, 2025 EX-10.9

Amendment Two to the Collaboration Agreement, dated July 11, 2024, by and between Adimab, LLC and the Registrant.

Exhibit 10.9 CONFIDENTIAL Portions of this Exhibit have been redacted because they are both (i) not material and (ii) would be competitively harmful if publicly disclosed. Information that was omitted has been noted in this document with a placeholder identified by the mark “[***]”. AMENDMENT 2 TO THE COLLABORATION AGREEMENT THIS AMENDMENT 2 (this “Amendment 2”), dated July 11, 2024 (the “Amendmen

February 27, 2025 8-K

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 27, 2025 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Comm

February 27, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 December 31, 2024 OR ☐ 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: 001-39856 CULLINAN THERA

February 27, 2025 EX-10.34

Third Amendment to Exclusive Patent License Agreement, dated December 20, 2023, by and between the Massachusetts Institute of Technology and Cullinan Amber Corp.

Exhibit 10.34 Certain confidential information contained in this document, marked by [***], has been omitted because it is not material and would likely cause competitive harm to Cullinan Therapeutics, Inc. if publicly disclosed. Massachusetts Institute of Technology and Cullinan Amber Corp. THIRD AMENDMENT This Third Amendment, effective as of December 20th, 2023 (the “Third Amendment Effective D

February 27, 2025 EX-FILING FEES

Filing Fee Table.

Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) Cullinan Therapeutics, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common stock, $0.

February 27, 2025 EX-19.1

Insider Trading Policy.

Exhibit 19.1 CULLINAN THERAPEUTICS, INC. INSIDER TRADING POLICY I. INTRODUCTION This Insider Trading Policy (the “Policy”) applies to all Insiders and Affiliated Persons (each as defined below) of Cullinan Therapeutics, Inc. (the “Company”). This Policy is designed to prevent insider trading or the appearance of impropriety, to satisfy the Company’s obligation to reasonably supervise the activitie

January 29, 2025 8-K

Regulation FD Disclosure, 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): January 28, 2025 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commi

January 29, 2025 EX-99.1

Taiho Pharmaceutical, Taiho Oncology, and Cullinan Therapeutics Announce Primary Endpoint Met in Phase 2b Trial of Zipalertinib in Patients with Non-Small Cell Lung Cancer Harboring EGFR Exon 20 Insertion Mutations Who Have Received Prior Therapy

Exhibit 99.1 Taiho Pharmaceutical, Taiho Oncology, and Cullinan Therapeutics Announce Primary Endpoint Met in Phase 2b Trial of Zipalertinib in Patients with Non-Small Cell Lung Cancer Harboring EGFR Exon 20 Insertion Mutations Who Have Received Prior Therapy TOKYO, Japan, PRINCETON, New Jersey, CAMBRIDGE, Massachusetts, January 28, 2025 — Taiho Pharmaceutical Co., Ltd., Taiho Oncology, Inc., and

November 14, 2024 SC 13G/A

CGEM / Cullinan Therapeutics, Inc. / BIOTECHNOLOGY VALUE FUND L P - AMENDMENT NO. 5 TO SCHEDULE 13G Passive Investment

SC 13G/A 1 sc13ga507422cgem11142024.htm AMENDMENT NO. 5 TO SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 5)1 Cullinan Therapeutics, Inc. (Name of Issuer) Common Stock, par val

November 14, 2024 SC 13G/A

CGEM / Cullinan Therapeutics, Inc. / Blue Owl Capital Holdings LP - SC 13G/A Passive Investment

SC 13G/A 1 ef20038685sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1)* CULLINAN THERAPUTICS, INC. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 230031106 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Stateme

November 7, 2024 8-K

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 07, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Comm

November 7, 2024 EX-99.1

Cullinan Therapeutics Provides Corporate Update and Reports Third Quarter 2024 Financial Results Global Phase 1 study of CLN-978 in systemic lupus erythematosus (SLE) cleared to initiate in U.S. and Australia; initial clinical data expected in Q4 202

Exhibit 99.1 Cullinan Therapeutics Provides Corporate Update and Reports Third Quarter 2024 Financial Results Global Phase 1 study of CLN-978 in systemic lupus erythematosus (SLE) cleared to initiate in U.S. and Australia; initial clinical data expected in Q4 2025 CLN-619 on-track for initial expansion cohort data in endometrial and cervical cancers in Q2 2025 Zipalertinib pivotal Phase 2b study e

November 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 September 30, 2024 OR ☐ 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: 001-39856 CULLI

October 16, 2024 8-K

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

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 16, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commi

October 16, 2024 EX-99.1

Cullinan Therapeutics Receives U.S. FDA Clearance of Investigational New Drug Application for CLN-978 Administered Subcutaneously in Patients with Moderate to Severe Systemic Lupus Erythematosus CLN-978 is the first development stage CD19 T cell enga

Exhibit 99.1 Cullinan Therapeutics Receives U.S. FDA Clearance of Investigational New Drug Application for CLN-978 Administered Subcutaneously in Patients with Moderate to Severe Systemic Lupus Erythematosus CLN-978 is the first development stage CD19 T cell engager to receive U.S. FDA IND clearance in autoimmune diseases CAMBRIDGE, Mass., Oct. 16, 2024 (GLOBE NEWSWIRE) - Cullinan Therapeutics, In

October 16, 2024 EX-99.2

CORPORATE OVERVIEW October 2024

CORPORATE OVERVIEW October 2024 Important Notice and Disclaimers This presentation contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995.

September 17, 2024 8-K

Regulation FD Disclosure, 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 17, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Com

September 17, 2024 EX-99.1

Cullinan Therapeutics Receives Approval to Initiate its Global Phase 1 Clinical Trial of CLN-978 for the Treatment of Systemic Lupus Erythematosus Phase 1 clinical trial is designed to assess the safety, pharmacokinetics and initial clinical activity

Exhibit 99.1 Cullinan Therapeutics Receives Approval to Initiate its Global Phase 1 Clinical Trial of CLN-978 for the Treatment of Systemic Lupus Erythematosus Phase 1 clinical trial is designed to assess the safety, pharmacokinetics and initial clinical activity of CLN-978 for patients with systemic lupus erythematosus The trial will be conducted in multiple sites in Australia as well as other co

August 8, 2024 8-K

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

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 08, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commis

August 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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, 2024 OR ☐ 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: 001-39856 CULLINAN T

August 8, 2024 EX-99.1

Cullinan Therapeutics Provides Corporate Update and Reports Second Quarter 2024 Financial Results Investigational New Drug (IND) application for CLN-978 in systemic lupus erythematosus (SLE) remains on track to be filed in third quarter of 2024 Compa

Exhibit 99.1 Cullinan Therapeutics Provides Corporate Update and Reports Second Quarter 2024 Financial Results Investigational New Drug (IND) application for CLN-978 in systemic lupus erythematosus (SLE) remains on track to be filed in third quarter of 2024 Company to pursue rheumatoid arthritis (RA) as second autoimmune indication for CLN-978 development CLN-619 combination therapy data presented

June 27, 2024 8-K

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): June 26, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissi

June 4, 2024 424B3

PROSPECTUS Cullinan Therapeutics, Inc. Up to 14,421,070 Shares of Common Stock Pre-Funded Warrants to Purchase Up to 315,790 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-279452 PROSPECTUS Cullinan Therapeutics, Inc. Up to 14,421,070 Shares of Common Stock Pre-Funded Warrants to Purchase Up to 315,790 Shares of Common Stock This prospectus relates to the disposition, from time to time, by the selling stockholders (including their transferees, pledgees, donees or successors) identified in this p

June 3, 2024 EX-99.1

Cullinan Therapeutics Announces Positive Initial Data from Pivotal Phase 2b REZILIENT1 Study of Zipalertinib Objective response rate of 39% with manageable safety profile in patients with non-small cell lung cancer (NSCLC) harboring EGFR Exon 20 inse

Exhibit 99.1 Cullinan Therapeutics Announces Positive Initial Data from Pivotal Phase 2b REZILIENT1 Study of Zipalertinib Objective response rate of 39% with manageable safety profile in patients with non-small cell lung cancer (NSCLC) harboring EGFR Exon 20 insertion mutations treated with zipalertinib who had progressed after prior amivantamab treatment CAMBRIDGE, Mass., June 1, 2024 (GLOBE NEWS

June 3, 2024 EX-99.2

CLN-619 and Zipalertinib Updates at ASCO June 2024

CLN-619 and Zipalertinib Updates at ASCO June 2024 Important Notice and Disclaimers This presentation contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995.

June 3, 2024 8-K

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

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 01, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissi

May 31, 2024 CORRESP

CULLINAN THERAPEUTICS, INC. One Main Street, Suite 1350 Cambridge, MA 02142

CULLINAN THERAPEUTICS, INC. One Main Street, Suite 1350 Cambridge, MA 02142 May 31, 2024 VIA EDGAR Securities and Exchange Commission Division of Corporate Finance 100 F Street, N.E. Washington, D.C. 20549 Attention:  Tamika Sheppard Re: Cullinan Therapeutics, Inc. Registration Statement on Form S-3 (File No. 333-279452) Request for Acceleration Ladies and Gentlemen: Pursuant to Rule 461 under the

May 23, 2024 EX-99.1

Cullinan Therapeutics to Present First Data for CLN-619, a Novel Anti-MICA/B Antibody, in Combination with a Checkpoint Inhibitor and Updated Monotherapy Data at ASCO 2024 Preliminary data from CLN-619 in combination with checkpoint inhibitor pembrol

Exhibit 99.1 Cullinan Therapeutics to Present First Data for CLN-619, a Novel Anti-MICA/B Antibody, in Combination with a Checkpoint Inhibitor and Updated Monotherapy Data at ASCO 2024 Preliminary data from CLN-619 in combination with checkpoint inhibitor pembrolizumab show objective responses in patients with tumor types that are typically unresponsive to pembrolizumab, such as non-small cell lun

May 23, 2024 8-K

Regulation FD Disclosure, 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): May 23, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissio

May 16, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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 (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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 ☐ Confid

May 16, 2024 EX-4.1

Specimen Common Stock Certificate (filed herewith)

Exhibit 4.1 . ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS# COMMON STOCK COMMON STOCK PO PAR VALUE $0.0001 MR ADD ADD ADD ADD 43 2 1 A Box DESIGNATION SAMPLE 43004, Certificate Shares (IF Number * * 000000 ****************** * * * 000000 ***************** ANY) ZQ00000000 **** 000000 **************** Providence ***** 000000 *************** RI CULLINAN THERAPEUTICS, INC. ****** 000000 ********

May 16, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confide

May 16, 2024 S-3

As filed with the Securities and Exchange Commission on May 16, 2024

Table of Contents As filed with the Securities and Exchange Commission on May 16, 2024 Registration No.

May 16, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Cullinan Therapeutics, Inc.

May 15, 2024 EX-99.1

Cullinan Therapeutics Provides Corporate Update and Reports First Quarter 2024 Financial Results Combination and monotherapy solid tumor dose escalation data for CLN-619 to be presented in a poster session at ASCO 2024 Annual Meeting CLN-978 developm

Exhibit 99.1 Cullinan Therapeutics Provides Corporate Update and Reports First Quarter 2024 Financial Results Combination and monotherapy solid tumor dose escalation data for CLN-619 to be presented in a poster session at ASCO 2024 Annual Meeting CLN-978 development to focus exclusively on autoimmune diseases, starting with systemic lupus erythematosus (SLE) as the first indication Cash and invest

May 15, 2024 EX-10.1

Separation and Transition Agreement, effective as March 28, 2024, by and between the Registrant and Jeffrey Trigilio.

Exhibit 10.1 March 28, 2024 Jeff Trigilio Dear Jeff: The purpose of this Separation and Transition letter agreement (this “Agreement”) is to confirm the terms of your separation from Cullinan Oncology, Inc. (the “Company”) and your post-separation consulting arrangement with the Company. Capitalized terms not defined herein shall have the respective meanings ascribed to them in the Employment Agre

May 15, 2024 EX-3.1

Second Amended and Restated Certificate of Incorporation of the Registrant, as amended by the Certificate of Amendment, effective as of April 15, 2024 (incorporated by reference to Exhibit 3.1 of the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on May 15, 2024).

Exhibit 3.1 SECOND AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. Cullinan Management, Inc., a corporation organized and existing under the laws of the State of Delaware (the “Corporation”), hereby certifies as follows: 1. The name of the Corporation is Cullinan Management, Inc. The date of the filing of its original Certificate of Incorporation with the Secretary o

May 15, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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, 2024 OR ☐ 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: 001-39856 CULLINAN

May 15, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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 09, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissio

April 29, 2024 EX-10.1

Employment Agreement, effective April 29, 2024, between Cullinan Therapeutics, Inc. and Mary Kay Fenton

Exhibit 10.1 EMPLOYMENT AGREEMENT This Employment Agreement (“Agreement”) is made between Cullinan Therapeutics, Inc., a Delaware corporation (the “Company”), and Mary Kay Fenton (the “Executive”) and is effective as of the Executive’s first day of employment with the Company, which will be April 29, 2024 (the “Effective Date”). This Agreement supersedes in all respects all prior agreements betwee

April 29, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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): April 29, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commiss

April 24, 2024 SC 13G

CGEM / Cullinan Therapeutics, Inc. / Flynn James E Passive Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No.

April 16, 2024 EX-10.1

Form of Stock Purchase Agreement, dated April 15, 2024, by and among the Registrant and the purchasers party thereto (incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the SEC on April 16, 2024).

Exhibit 10.1 STOCK PURCHASE AGREEMENT BY AND BETWEEN CULLINAN THERAPEUTICS, INC. AND EACH OF THE PURCHASERS AS SET FORTH HEREIN APRIL 15, 2024 TABLE OF CONTENTS 1. Definitions 5 2. Purchase and Sale of Common Stock 9 2.1. Purchase and Sale 9 2.2. Closing 10 3. Representations and Warranties of the Company 10 3.1. Organization and Power 10 3.2. Capitalization 10 3.3. Registration Rights 11 3.4. Aut

April 16, 2024 EX-3.1

Certificate of Amendment to the Second Amended and Restated Certificate of Incorporation, effective as of April 15, 2024

Exhibit 3.1 CERTIFICATE OF AMENDMENT TO THE SECOND AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CULLINAN ONCOLOGY, INC. (Pursuant to Section 242 of the General Corporation Law of the State of Delaware) Cullinan Oncology, Inc. (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 certif

April 16, 2024 8-K

Regulation FD Disclosure, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, 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): April 15, 2024 CULLINAN THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commiss

April 16, 2024 EX-99.2

Cullinan Therapeutics Announces Strategic Expansion into Autoimmune Diseases CLN-978 clinical development to focus exclusively on autoimmune diseases, pursuing systemic lupus erythematosus as a first indication Clinical observations from CLN-978 B-NH

Exhibit 99.2 Cullinan Therapeutics Announces Strategic Expansion into Autoimmune Diseases CLN-978 clinical development to focus exclusively on autoimmune diseases, pursuing systemic lupus erythematosus as a first indication Clinical observations from CLN-978 B-NHL study show rapid, deep, and sustained B cell depletion and clinical activity Corporate name change to Cullinan Therapeutics reflects st

April 16, 2024 EX-10.2

Form of Registration Rights Agreement, dated April 15, 2024, by and among Cullinan Therapeutics, Inc. and the purchasers party thereto

Exhibit 10.2 REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (the “Agreement”) is made as of April 15, 2024 by and among Cullinan Therapeutics, Inc. (formerly known as Cullinan Oncology, Inc.), a corporation organized and existing under the laws of the State of Delaware (the “Company”), and the several purchasers signatory hereto (each, a “Purchaser” and collectively, the “Purchas

April 16, 2024 EX-3.2

Third Amended and Restated Bylaws of the Registrant, effective as of April 15, 2024 (incorporated by reference to Exhibit 3.2 of the Registrant’s Current Report on Form 8-K filed with the SEC on April 16, 2024).

Exhibit 3.2 THIRD AMENDED AND RESTATED BYLAWS OF CULLINAN THERAPEUTICS, INC. (the “Corporation”) ARTICLE I Stockholders SECTION 1. Annual Meeting. The annual meeting of stockholders (any such meeting being referred to in these Bylaws as an “Annual Meeting”) shall be held at the hour, date and place within or without the United States which is fixed by the Board of Directors, which time, date and p

April 16, 2024 EX-99.3

CORPORATE OVERVIEW April 2024

CORPORATE OVERVIEW April 2024 Important Notice and Disclaimers This presentation contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995.

April 16, 2024 EX-99.1

Cullinan Therapeutics Announces Oversubscribed $280 million Private Placement Financing includes new and existing leading life sciences institutional investors Proceeds, along with existing cash and cash equivalents, are expected to extend cash runwa

Exhibit 99.1 Cullinan Therapeutics Announces Oversubscribed $280 million Private Placement Financing includes new and existing leading life sciences institutional investors Proceeds, along with existing cash and cash equivalents, are expected to extend cash runway into 2028 Cullinan to host a virtual investor event on April 16 at 8:00 am ET CAMBRIDGE, Mass., April 16, 2024 (GLOBE NEWSWIRE) – Culli

April 16, 2024 EX-10.3

Form of Pre-Funded Warrant

Exhibit 10.3 THE OFFER AND SALE OF THE SECURITIES AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES REPRESENTED BY THIS CERTIFICATE TO WHICH THIS CONFIRMATION RELATES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES. THE SECURITIES AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES MAY NOT BE SOLD

March 14, 2024 8-K

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

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 14, 2024 CULLINAN ONCOLOGY, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commission

March 14, 2024 EX-21.1

List of Subsidiaries of the Registrant.

Exhibit 21.1 SUBSIDIARIES Subsidiary Jurisdiction of Organization Cullinan Amber Corp. Delaware Cullinan Florentine Corp. Delaware Cullinan Mica Corp. Delaware Cullinan Securities Corp. Massachusetts

March 14, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 December 31, 2023 OR ☐ 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: 001-39856 CULLINAN ONCOL

March 14, 2024 S-8

As filed with the Securities and Exchange Commission on March 14, 2024

As filed with the Securities and Exchange Commission on March 14, 2024 Registration No.

March 14, 2024 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Fourth Quarter and Full Year 2023 Financial Results Cullinan remains on track to report additional solid tumor dose escalation data for CLN-619 in the second quarter of 2024 and recently receive

Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports Fourth Quarter and Full Year 2023 Financial Results Cullinan remains on track to report additional solid tumor dose escalation data for CLN-619 in the second quarter of 2024 and recently received FDA clearance for an IND to evaluate CLN-619 in relapsed/refractory multiple myeloma The company is exploring development of its CD19xC

March 14, 2024 EX-97.1

Policy for Recoupment of Incentive Compensation.

Exhibit 97.1 CULLINAN ONCOLOGY, INC. Policy for Recoupment of Incentive Compensation I. Introduction In accordance with Section 10D of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the regulations thereunder, and Rule 5608 of the listing standards of the Nasdaq Stock Market LLC, the Board of Directors (the “Board”) of Cullinan Oncology, Inc. (the “Company”) has adopted

March 14, 2024 EX-10.32

Form of Restricted Stock Unit Award Agreement

Exhibit 10.32 RESTRICTED STOCK UNIT AWARD AGREEMENT FOR COMPANY EMPLOYEES UNDER THE CULLINAN ONCOLOGY, INC. 2021 STOCK OPTION AND INCENTIVE PLAN Name of Grantee: No. of Restricted Stock Units: Grant Date: Pursuant to the Cullinan Oncology, Inc. 2021 Stock Option and Incentive Plan as amended through the date hereof (the “Plan”), Cullinan Oncology, Inc. (the “Company”) hereby grants an award of the

March 14, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) Cullinan Oncology, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common stock, $0.0001

February 14, 2024 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 tm246225d1ex99-1.htm EXHIBIT 99.1 EXHIBIT 99.1 JOINT FILING AGREEMENT Each of the undersigned, pursuant to Rule 13d-1(k)(1) under the Act, hereby agrees and acknowledges that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of the Common Stock and the information required by this Schedule 13G, to

February 14, 2024 SC 13G/A

CGEM / Cullinan Oncology, Inc. / Jovan-Embiricos Morana - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) CULLINAN ONCOLOGY, INC. (Name of Issuer) Common Stock, $0.0001 par value (Title of Class of Securities) 230031106 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule purs

February 14, 2024 SC 13G/A

CGEM / Cullinan Oncology, Inc. / BIOTECHNOLOGY VALUE FUND L P - AMENDMENT NO. 4 TO SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 4)1 Cullinan Oncology, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 230031106 (CUSIP Number)

February 14, 2024 SC 13G

CGEM / Cullinan Oncology, Inc. / Blue Owl Capital Holdings LP - SC 13G Passive Investment

SC 13G 1 ef20021757sc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )* Cullinan Oncology, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 230031106 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check

February 13, 2024 SC 13G/A

CGEM / Cullinan Oncology, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2)* Name of issuer: Cullinan Oncology Inc Title of Class of Securities: Common Stock CUSIP Number: 230031106 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

February 6, 2024 SC 13G

CGEM / Cullinan Oncology, Inc. / FRANKLIN RESOURCES INC Passive Investment

cull23in.htm - Generated by SEC Publisher for SEC Filing CUSIP NO. 230031106 13G Page 1 of 14 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* CULLINAN ONCOLOGY, INC. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 230031106 (CUSIP Number) December 31, 2023 (Dat

January 8, 2024 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A 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 08, 2024 CULLINAN ONCOLOGY, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commiss

January 8, 2024 8-K

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

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 08, 2024 CULLINAN ONCOLOGY, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissio

November 8, 2023 8-K

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 08, 2023 CULLINAN ONCOLOGY, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commissi

November 8, 2023 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Third Quarter 2023 Financial Results Cullinan to provide clinical data updates on three novel targeted oncology programs and complete enrollment in the pivotal Phase 2b portion of the zipalertin

Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports Third Quarter 2023 Financial Results Cullinan to provide clinical data updates on three novel targeted oncology programs and complete enrollment in the pivotal Phase 2b portion of the zipalertinib REZILIENT1 study in 2024 Initial CLN-619 clinical biomarker data support mechanism of action and demonstrate monotherapy clinical acti

November 8, 2023 EX-10.1

Amendment No. 1 to Employment Agreement, by and between the Registrant and Nadim Ahmed (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on November 8, 2023).

Exhibit 10.1 AMENDMENT NO. 1 TO EMPLOYMENT AGREEMENT This Amendment No. 1 to Employment Agreement (the “Amendment”) is made between Cullinan Oncology, Inc., a Delaware corporation (the “Company”), and Nadim Ahmed (the “Executive”) and is effective as of May 1, 2023 (the “Effective Date”). Reference is made to that certain Employment Agreement, by and between the Company and the Executive, effectiv

November 8, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 September 30, 2023 OR ☐ 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: 001-39856 CULLI

August 10, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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, 2023 OR ☐ 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: 001-39856 CULLINAN O

August 10, 2023 EX-10.2

Non-Employee Director Compensation Policy (incorporated by reference to Exhibit 10.2 of the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on August 10, 2023)

Exhibit 10.2 CULLINAN ONCOLOGY, INC. NON-EMPLOYEE DIRECTOR COMPENSATION POLICY The purpose of this Non-Employee Director Compensation Policy (the “Policy”) of Cullinan Oncology, Inc. (the “Company”) is to provide a total compensation package that enables the Company to attract and retain, on a long-term basis, high-caliber directors who are not employees or officers of the Company or its subsidiar

August 10, 2023 8-K

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

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 10, 2023 CULLINAN ONCOLOGY, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commission

August 10, 2023 EX-10.1

Consulting Agreement, dated June 8, 2023, by and between the Registrant and Patrick Baeuerle

Exhibit 10.1 CONSULTING AGREEMENT This Consulting Agreement (the “Agreement”) is made as of June 8, 2023 (the “Effective Date”) by and between Cullinan Oncology, Inc., a Delaware corporation with principal offices at One Main Street, Suite 1350, Cambridge, MA 02141 and on behalf of its affiliates and subsidiaries (collectively “Cullinan”) and Patrick Baeuerle, PhD, (“Consultant”). Cullinan and Con

August 10, 2023 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Second Quarter 2023 Financial Results Phase 3 first-line study of zipalertinib in EGFR exon 20 insertion mutation non-small-cell lung cancer (NSCLC) patients (REZILIENT-3) open to enrollment Ini

Cullinan Oncology Provides Corporate Update and Reports Second Quarter 2023 Financial Results Phase 3 first-line study of zipalertinib in EGFR exon 20 insertion mutation non-small-cell lung cancer (NSCLC) patients (REZILIENT-3) open to enrollment Initial monotherapy clinical data for CLN-619 presented at ASCO 2023 Annual Meeting; initiated monotherapy expansion cohorts in endometrial and cervical cancers First patient dosed in Phase 1 study of CLN-978 in relapsed/refractory (R/R) B Cell non-Hodgkin lymphoma (B-NHL) Cash and investment position of $512.

June 14, 2023 8-K

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

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 08, 2023 CULLINAN ONCOLOGY, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39856 81-3879991 (State or Other Jurisdiction of Incorporation) (Commission F

May 25, 2023 EX-99.1

Cullinan Oncology to Present First Monotherapy Clinical Data for CLN-619, a Novel Anti-MICA/B Antibody, at ASCO 2023 CLN-619 demonstrated monotherapy activity across a range of tumor types, including in patients whose cancer had progressed on checkpo

EX-99.1 Exhibit 99.1 Cullinan Oncology to Present First Monotherapy Clinical Data for CLN-619, a Novel Anti-MICA/B Antibody, at ASCO 2023 CLN-619 demonstrated monotherapy activity across a range of tumor types, including in patients whose cancer had progressed on checkpoint inhibitor therapy Initial data indicate an acceptable safety profile of CLN-619 across all doses assessed Based on observed c

May 25, 2023 8-K

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 25, 2023 CULLINAN ONCOLOGY, 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): May 25, 2023 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission Fi

May 16, 2023 CORRESP

CULLINAN ONCOLOGY, INC. One Main Street, Suite 1350 Cambridge, MA 02142

CORRESP CULLINAN ONCOLOGY, INC. One Main Street, Suite 1350 Cambridge, MA 02142 May 16, 2023 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Attention: Jimmy McNamara Re: Cullinan Oncology, Inc. Registration Statement on Form S-3/A (File No. 333-270384) Request for Acceleration Ladies and Gentlemen: Pursuant to Rule 461 under t

May 11, 2023 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports First Quarter 2023 Financial Results Zipalertinib pivotal trial now enrolling at the 100mg BID dose only First clinical data for CLN-049 and CLN-619 to be reported at EHA 2023 Congress and ASCO

EX-99.1 Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports First Quarter 2023 Financial Results Zipalertinib pivotal trial now enrolling at the 100mg BID dose only First clinical data for CLN-049 and CLN-619 to be reported at EHA 2023 Congress and ASCO 2023 Annual Meeting, respectively Cash and investment position of $503.5 million as of March 31, 2023 continues to give runway in

May 11, 2023 EX-10.2

License and Collaboration Agreement, dated February 13, 2023, by and between the Registrant and Harbour BioMed US Inc. (incorporated by reference to Exhibit 10.2 of the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on May 11, 2023).

Exhibit 10.2 CERTAIN INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [***], HAS BEEN OMITTED BECAUSE IT (I) IS NOT MATERIAL AND (II) IS THE TYPE OF INFORMATION THAT THE REGISTRANT TYPICALLY TREATS AS PRIVATE OR CONFIDENTIAL. LICENSE AND COLLABORATION AGREEMENT by and between HARBOUR BIOMED US INC. and CULLINAN ONCOLOGY, INC. dated as of February , 2023 TABLE OF CONTENTS ARTICLE 1 DEFINITIONS 1

May 11, 2023 10-Q

Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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, 2023 OR ☐ 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: 001-39856 CULLINAN

May 11, 2023 8-K

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 11, 2023 CULLINAN ONCOLOGY, 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): May 11, 2023 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission Fi

May 11, 2023 EX-1.2

Sales Agreement by and between the Registrant and Cowen and Company, LLC, dated as of May 11, 2023 (incorporated by reference to Exhibit 1.2 of the Registrant’s Registration Statement on Form S-3 filed with the SEC on May 11, 2023)

EX-1.2 Exhibit 1.2 CULLINAN ONCOLOGY, INC. $125,000,000 COMMON STOCK SALES AGREEMENT May 11, 2023 Cowen and Company, LLC 599 Lexington Avenue New York, NY 10022 Ladies and Gentlemen: Cullinan Oncology, Inc., a Delaware corporation (the “Company”), confirms its agreement (this “Agreement”) with Cowen and Company, LLC (the “Agent”), as follows: 1. Issuance and Sale of Shares. The Company agrees that

May 11, 2023 S-3/A

As filed with the Securities and Exchange Commission on May 11, 2023

S-3/A Table of Contents As filed with the Securities and Exchange Commission on May 11, 2023 Registration No.

April 21, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

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

April 21, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐

March 17, 2023 CORRESP

CULLINAN ONCOLOGY, INC. One Main Street, Suite 1350 Cambridge, MA 02142

CORRESP CULLINAN ONCOLOGY, INC. One Main Street, Suite 1350 Cambridge, MA 02142 March 17, 2023 VIA EDGAR Securities and Exchange Commission Division of Corporate Finance 100 F Street, N.E. Washington, D.C. 20549 Attention: Jimmy McNamara Re: Cullinan Oncology, Inc. Registration Statement on Form S-3 (File No. 333-270384) Ladies and Gentlemen: We hereby withdraw Cullinan Oncology Inc’s request for

March 9, 2023 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Fourth Quarter and Full Year 2022 Financial Results Expanded clinical stage portfolio through licensing of U.S. rights to CLN-418 Received FDA clearance of IND application for CLN-978; submitted

EX-99.1 Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports Fourth Quarter and Full Year 2022 Financial Results Expanded clinical stage portfolio through licensing of U.S. rights to CLN-418 Received FDA clearance of IND application for CLN-978; submitted IND application for CLN-617 Initial clinical data updates for CLN-049 and CLN-619 on track for mid-2023 Potential for 6 clinical

March 9, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Cullinan Oncology (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 Unit(2) Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 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, par value $0.

March 9, 2023 10-K

Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 December 31, 2022 OR ☐ 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: 001-39856 CULLINAN ONCOL

March 9, 2023 CORRESP

CULLINAN ONCOLOGY, INC. One Main Street, Suite 1350 Cambridge, MA 02142

CORRESP CULLINAN ONCOLOGY, INC. One Main Street, Suite 1350 Cambridge, MA 02142 March 9, 2023 VIA EDGAR Securities and Exchange Commission Division of Corporate Finance 100 F Street, N.E. Washington, D.C. 20549 Attention: Jimmy McNamara Re: Cullinan Oncology, Inc. Registration Statement on Form S-3 (File No. 333-270384) Request for Acceleration Ladies and Gentlemen: Pursuant to Rule 461 under the

March 9, 2023 EX-4.3

Form of Indenture

EX-4.3 Exhibit 4.3 CULLINAN ONCOLOGY, INC. and [ ], as Trustee INDENTURE Dated as of [ ], [ ] TABLE OF CONTENTS ARTICLE 1. DEFINITIONS AND INCORPORATION BY REFERENCE 1 1.1. DEFINITIONS 1 1.2. INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT 5 1.3. RULES OF CONSTRUCTION 5 ARTICLE 2. THE SECURITIES 6 2.1. ISSUABLE IN SERIES 6 2.2. ESTABLISHMENT OF TERMS OF SERIES OF SECURITIES 6 2.3. EXECUTION AND

March 9, 2023 EX-10

Form of Stock Purchase and Transfer Agreement for Institutional Transferors (incorporated by reference to Exhibit 10.24 of the Registrant's Annual Report on Form 10-K filed with the SEC on March 9, 2023).

Exhibit 10.24 STOCK PURCHASE AND TRANSFER AGREEMENT This Stock Purchase and Transfer Agreement (the “Agreement”) is made and entered into as of [●], 2022 (the “Effective Date”), by and among [●] (“Transferor”), Cullinan Oncology, Inc., a Delaware corporation (“Transferee”), and Cullinan MICA Corp., a Delaware corporation (the “Corporation”, together with Transferor and Transferee, the “Parties”).

March 9, 2023 S-3

Powers of Attorney

S-3 Table of Contents As filed with the Securities and Exchange Commission on March 9, 2023 Registration No.

March 9, 2023 EX-10

Amendment Number 1 to Royalty Transfer Agreement, dated June 6, 2022, by and among the Registrant, MPM Oncology Charitable Foundation, Inc., and the UBS Optimus Foundation (incorporated by reference to Exhibit 10.27 of the Registrant's Annual Report on Form 10-K filed with the SEC on March 9, 2023).

Exhibit 10.27 AMENDMENT NUMBER 1 TO ROYALTY TRANSFER AGREEMENT This Amendment Number 1 to Royalty Transfer Agreement (this “Amendment”), dated as of June 6, 2022, is made by and among Cullinan Pearl Corp., a Delaware corporation (the “Company”), MPM Oncology Charitable Foundation, Inc., a Massachusetts charitable foundation (“MPM Charitable Foundation”) and the UBS Optimus Foundation, a Swiss char

March 9, 2023 EX-10

Form of Stock Purchase and Transfer Agreement for Individual Transferors (incorporated by reference to Exhibit 10.25 of the Registrant's Annual Report on Form 10-K filed with the SEC on March 9, 2023).

Exhibit 10.25 [OPTION] PURCHASE AND TRANSFER AGREEMENT This Option Purchase and Transfer Agreement (the “Agreement”) is made and entered into as of , 2022 (the “Effective Date”), by and among [●] (“Transferor”), Cullinan Oncology, Inc., a Delaware corporation (“Transferee”), and Cullinan MICA Corp., a Delaware corporation (the “Corporation”, together with Transferor and Transferee, the “Parties”).

March 9, 2023 S-8

As filed with the Securities and Exchange Commission on March 9, 2023

S-8 As filed with the Securities and Exchange Commission on March 9, 2023 Registration No.

March 9, 2023 EX-1.2

Sales Agreement by and between the Registrant and SVB Securities LLC, dated as of March 9, 2023.

EX-1.2 Exhibit 1.2 CULLINAN ONCOLOGY, INC. Shares of Common Stock ($0.0001 par value per share) SALES AGREEMENT March 9, 2023 SVB SECURITIES LLC 53 State Street, 40th Floor Boston, MA 02109 Ladies and Gentlemen: Cullinan Oncology, Inc., a Delaware corporation (the “Company”), confirms its agreement (this “Agreement”) with SVB Securities LLC (the “Agent”), as follows: 1. Issuance and Sale of Shares

March 9, 2023 EX-10

Second Amendment to Exclusive Patent License Agreement, dated December 20, 2022, by and between the Massachusetts Institute of Technology and Cullinan Amber Corp. (incorporated by reference to Exhibit 10.26 of the Registrant's Annual Report on Form 10-K filed with the SEC on March 9, 2023).

Exhibit 10.26 Certain confidential information contained in this document, marked by [***], has been omitted because it is not material and would likely cause competitive harm to Cullinan Oncology, Inc. if publicly disclosed. Massachusetts Institute of Technology and Cullinan Amber Corp. SECOND AMENDMENT This Second Amendment, effective as of December 20, 2022 (the “Second Amendment Effective Date

March 9, 2023 S-8

Power of Attorney (included on the signature pages of this registration statement).

S-8 As filed with the Securities and Exchange Commission on March 9, 2023 Registration No.

March 9, 2023 EX-10

Employment Agreement, effective January 7, 2021, between the Registrant and Jeffrey Trigilio

Exhibit 10.23 EMPLOYMENT AGREEMENT This Employment Agreement (“Agreement”) is made between Cullinan Management, Inc., a Delaware corporation (the “Company”), and Jeff Trigilio (the “Executive”) and is effective as of the closing of the Company’s first underwritten public offering of its equity securities pursuant to an effective registration statement under the Securities Act of 1933, as amended (

March 9, 2023 8-K

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): March 9, 2023 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission F

March 9, 2023 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) Cullinan Oncology, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common

March 9, 2023 EX-99.1

Nonstatutory Stock Option Inducement Award Agreement

EX-99.1 Exhibit 99.1 NON-QUALIFIED STOCK OPTION AGREEMENT (INDUCEMENT AWARD) FOR COMPANY EMPLOYEES Name of Optionee: No. of Option Shares: Option Exercise Price per Share: $ [FMV Grant Date ] Grant Date: Vesting Start Date: Expiration Date: This agreement (this “Agreement”) evidences an inducement grant of a stock option (the “Stock Option”) by Cullinan Oncology, Inc. (the “Company”) to the Option

March 9, 2023 EX-21

List of Subsidiaries of the Registrant.

Exhibit 21.1 SUBSIDIARIES Subsidiary Jurisdiction of Organization Cullinan Amber Corp. Delaware Cullinan Florentine Corp. Delaware Cullinan Mica Corp. Delaware Cullinan Securities Corp. Massachusetts

March 9, 2023 EX-FILING FEES

Filing Fee Table.

Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) Cullinan Oncology, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) (2) Proposed Maximum Offering Price Per Unit (3) Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common stock,

February 15, 2023 SC 13G/A

CGEM / Cullinan Oncology Inc / Jovan-Embiricos Morana - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) CULLINAN ONCOLOGY, INC. (Name of Issuer) Common Stock, $0.0001 par value (Title of Class of Securities) 230031106 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule purs

February 14, 2023 EX-99.1

Cullinan Oncology Licenses U.S. Rights to the First Clinical-Stage B7H4 x 4-1BB Bispecific Immune Activator from Harbour BioMed

Exhibit 99.1 Cullinan Oncology Licenses U.S. Rights to the First Clinical-Stage B7H4 x 4-1BB Bispecific Immune Activator from Harbour BioMed CAMBRIDGE, Mass., February 13, 2023 (GLOBE NEWSWIRE) — Cullinan Oncology, Inc. (Nasdaq: CGEM) and Harbour BioMed (HKEX: 02142) today announced that Cullinan Oncology has entered into an exclusive license with Harbour BioMed for the development and commercial

February 14, 2023 SC 13G/A

CGEM / Cullinan Oncology Inc / BIOTECHNOLOGY VALUE FUND L P - AMENDMENT NO. 3 TO THE SCHEDULE 13G Passive Investment

SC 13G/A 1 sc13ga307422cgem02142023.htm AMENDMENT NO. 3 TO THE SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 3)1 Cullinan Oncology, Inc. (Name of Issuer) Common Stock, par val

February 14, 2023 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, 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 13, 2023 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissi

February 13, 2023 SC 13G/A

CGEM / Cullinan Oncology Inc / CHI Advisors LLC - CHI ADVISORS LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Cullinan Oncology, Inc. (Name of Issuer) Common Stock, Par Value $0.0001 per share (Title of Class of Securities) 230031106 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate th

February 9, 2023 SC 13G/A

CGEM / Cullinan Oncology Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: Cullinan Oncology Inc. Title of Class of Securities: Common Stock CUSIP Number: 230031106 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

January 19, 2023 EX-3.1

Certificate of Designation of Preferences, Rights and Limitations of Series A Convertible Preferred Stock (incorporated by reference to Exhibit 3.1 of the Registrant's Current Report on Form 8-K filed with the SEC on January 19, 2023).

Exhibit 3.1 Delaware The First State I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE CERTIFICATE OF DESIGNATION OF “CULLINAN ONCOLOGY, INC.”, FILED IN THIS OFFICE ON THE SEVENTEENTH DAY OF JANUARY, A.D. 2023, AT 12:37 O`CLOCK P.M. 6126166 8100 SR# 20230155772 Authentication: 202508915 Date: 01-17-23 You may verify

January 19, 2023 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Unregistered Sales of Equity Securities, 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): January 17, 2023 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissio

January 19, 2023 EX-10.1

Exchange Agreement, dated January 17, 2023, by and among the Registrant and the Stockholders named therein (incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the SEC on January 19, 2023).

Exhibit 10.1 January 17, 2023 Cullinan Oncology, Inc. One Main Street, Suite 1350 Cambridge, MA 02142 Attention: Jeffrey Trigilio Re: 3(a)(9) Exchange Agreement Ladies and Gentlemen: This letter agreement (the “Agreement” ) confirms the agreement of Cullinan Oncology, Inc. (the “Company”), and the holders of the common stock, par value $0.0001 per share, of the Company (the “Common Stock”) listed

November 14, 2022 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Third Quarter 2022 Financial Results Initiated pivotal study for zipalertinib (CLN-081/TAS6417) Increased ownership in MICA subsidiary, which holds worldwide rights to CLN-619, from 54% to 92% C

Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports Third Quarter 2022 Financial Results Initiated pivotal study for zipalertinib (CLN-081/TAS6417) Increased ownership in MICA subsidiary, which holds worldwide rights to CLN-619, from 54% to 92% Continued enrollment in CLN-049 and CLN-619 clinical studies with initial clinical data updates on track for mid-2023 Cash and investments

November 14, 2022 8-K

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 14, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissi

November 14, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 September 30, 2022 OR ☐ 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: 001-39856 CULLI

November 2, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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 1, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissio

October 25, 2022 EX-99.1

Cullinan Oncology Significantly Increases Ownership Stake in its MICA Subsidiary which Holds Worldwide Rights to Clinical-Stage Novel Monoclonal Antibody CLN-619

Exhibit 99.1 Cullinan Oncology Significantly Increases Ownership Stake in its MICA Subsidiary which Holds Worldwide Rights to Clinical-Stage Novel Monoclonal Antibody CLN-619 Cullinan increases ownership in MICA subsidiary from 54% to 92% through share purchase from existing financial investors The ongoing Phase I clinical trial for CLN-619 remains on track to report initial clinical data in mid-2

October 25, 2022 8-K

Regulation FD Disclosure, 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): October 20, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissio

August 10, 2022 EX-10.2

Co-Development Agreement, dated June 21, 2022, by and between the Registrant and Taiho Oncology, Inc. (incorporated by reference to Exhibit 10.2 of the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on August 10, 2022).

Exhibit 10.2 Certain confidential information contained in this document, marked by [*****], has been omitted because it is not material and would likely cause competitive harm to Cullinan Oncology, Inc. if publicly disclosed. CO-DEVELOPMENT AGREEMENT BY AND BETWEEN TAIHO ONCOLOGY, INC. AND CULLINAN ONCOLOGY, INC. 1 Table of Contents ARTICLE I DEFINITIONS 1 ARTICLE II MANAGEMENT OF COLLABORATIVE A

August 10, 2022 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Second Quarter 2022 Financial Results Completed agreement for strategic collaboration to jointly develop and commercialize CLN-081 with Taiho Pharmaceutical Presented updated Phase 1/2a data for

Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports Second Quarter 2022 Financial Results Completed agreement for strategic collaboration to jointly develop and commercialize CLN-081 with Taiho Pharmaceutical Presented updated Phase 1/2a data for CLN-081 at the 100mg BID dose showing median duration of response greater than 21 months and median progression-free survival of 12 mont

August 10, 2022 8-K

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 10, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission

August 10, 2022 EX-10.3

Performance Stock Unit Award Agreement, dated June 9, 2022, by and between the Registrant and Nadim Ahmed

Exhibit 10.3 Certain confidential information contained in this document, marked by [***], has been omitted because it is not material and would likely cause competitive harm to Cullinan Oncology, Inc. if publicly disclosed. PERFORMANCE STOCK UNIT AWARD AGREEMENT FOR COMPANY EMPLOYEES UNDER THE CULLINAN ONCOLOGY, INC. 2021 STOCK OPTION AND INCENTIVE PLAN Name of Grantee: Nadim Ahmed No. of Perform

August 10, 2022 EX-10.1

Share Purchase Agreement, dated May 11, 2022, by and among the Registrant, Taiho Pharmaceutical Co. Ltd. and Cullinan Pearl Corp. (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on August 10, 2022).

EX-10.1 2 cgem-ex101.htm EX-10.1 Exhibit 10.1 Certain confidential information contained in this document, marked by [*****], has been omitted because it is not material and would likely cause competitive harm to Cullinan Oncology, Inc. if publicly disclosed. SHARE PURCHASE AGREEMENT BY AND AMONG Taiho Pharmaceutical Co., Ltd CULLINAN PEARL CORP. AND Cullinan Oncology, Inc May 11, 2022 TABLE OF CO

August 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

r UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 ? 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: 001-39856 CULLINAN

June 27, 2022 EX-99.1

UNAUDITED PRO FORMA FINANCIAL INFORMATION

Exhibit 99.1 UNAUDITED PRO FORMA FINANCIAL INFORMATION On June 21, 2022, Cullinan Oncology, Inc. (?Cullinan?) completed the previously announced sale of its equity interests in Cullinan Pearl Corp. (?Cullinan Pearl?) to Taiho Pharmaceutical Co., Ltd. (?Taiho Pharma?) pursuant to the terms of a Share Purchase Agreement dated May 11, 2022 (the ?Purchase Agreement?) and the simultaneous signing of a

June 27, 2022 8-K

Regulation FD Disclosure, Entry into 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): June 21, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission F

June 27, 2022 EX-99.2

Cullinan Oncology and Taiho Pharmaceutical Complete Agreement for Strategic Collaboration to Jointly Develop and Commercialize CLN-081/TAS6417 Cullinan Oncology receives upfront cash payment of $275 million, with potential to receive up to an additio

Exhibit 99.2 Cullinan Oncology and Taiho Pharmaceutical Complete Agreement for Strategic Collaboration to Jointly Develop and Commercialize CLN-081/TAS6417 Cullinan Oncology receives upfront cash payment of $275 million, with potential to receive up to an additional $130 million in regulatory-based milestone payments Taiho obtains exclusive global rights to CLN-081/TAS6417 outside the U.S.; Taiho

June 24, 2022 8-K

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): June 22, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission F

May 16, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 ? 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: 001-39856 CULLINAN

May 16, 2022 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports First Quarter 2022 Financial Results

Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports First Quarter 2022 Financial Results Announced U.S. co-development and co-commercialization agreement for CLN-081 with Taiho Pharmaceutical; updated CLN-081 data accepted for oral presentation at the American Society for Clinical Oncology (ASCO) meeting in June CLN-049 and CLN-619 Phase I dosing continues with initial clinical da

May 16, 2022 8-K

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 16, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission Fi

May 12, 2022 EX-99.1

Cullinan Oncology and Taiho Pharmaceutical Announce Strategic Collaboration to Jointly Develop and Commercialize CLN-081/TAS6417 and Taiho’s Acquisition of Cullinan Pearl Taiho obtains exclusive global rights to CLN-081/TAS6417 outside the U.S.; in t

Exhibit 99.1 Cullinan Oncology and Taiho Pharmaceutical Announce Strategic Collaboration to Jointly Develop and Commercialize CLN-081/TAS6417 and Taiho?s Acquisition of Cullinan Pearl Taiho obtains exclusive global rights to CLN-081/TAS6417 outside the U.S.; in the U.S., Taiho and Cullinan Oncology to jointly develop and co-commercialize CLN-081/TAS6417 Cullinan Oncology will receive an upfront ca

May 12, 2022 EX-99.2

Webcast Agenda AGENDA PRESENTERS Nadim Ahmed 1. Introduction Chief Executive Officer Corinne Savill, Ph.D. 2. Collaboration Overview Chief Business Officer 3. Financial Context Jeff Trigilio Chief Financial Officer 4. Strategic Perspective JOINING US

Exhibit 99.2 Mining for Tomorrow?s Cures Strategic Partnership With Taiho to Jointly Develop and Commercialize CLN-081 in the U.S. May 12, 2022 Important Notice and Disclaimers This presentation contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, express or implied statemen

May 12, 2022 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, 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 11, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission Fi

April 29, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confide

April 29, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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 (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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 ? Confid

March 17, 2022 EX-10.23

Separation Agreement, effective as of October 18, 2021, by and between the Registrant and Owen Hughes.

Certain confidential information contained in this document, marked by [***], has been omitted because it is not material and would likely cause competitive harm to Cullinan Oncology, Inc.

March 17, 2022 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Fourth Quarter and Full Year 2021 Financial Results

Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports Fourth Quarter and Full Year 2021 Financial Results CLN-081 clinical data support a differentiated clinical profile; regulatory update planned for first quarter 2022 CLN-049 and CLN-619 patient dosing initiated in December 2021 for first-in-human clinical trials; initial clinical data expected by mid-2023 Portfolio advancement an

March 17, 2022 8-K

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): March 17, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission

March 17, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 December 31, 2021 OR ? 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: 001-39856 CULLINAN ONCOL

March 17, 2022 EX-21.1

List of Subsidiaries of the Registrant.

Exhibit 21.1 SUBSIDIARIES Subsidiary Jurisdiction of Organization Cullinan Amber Corp. Delaware Cullinan Florentine Corp. Delaware Cullinan Mica Corp. Delaware Cullinan Pearl Corp. Delaware Cullinan Securities Corp. Massachusetts

March 10, 2022 S-8

As filed with the Securities and Exchange Commission on March 10, 2022

As filed with the Securities and Exchange Commission on March 10, 2022 Registration No.

March 10, 2022 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES 4 d309484dexfilingfees.htm EX-FILING FEES Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) Cullinan Oncology, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rat

March 3, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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 28, 2022 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissi

March 3, 2022 EX-10.1

Employment Agreement, effective February 28, 2022, between the Registrant and Jeffrey Jones (incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the SEC on March 3, 2022).

Exhibit 10.1 Execution Version EMPLOYMENT AGREEMENT This Employment Agreement (?Agreement?) is made between Cullinan Oncology, Inc., a Delaware corporation (the ?Company?), and Jeffrey Jones (the ?Executive?) and is effective as of the Executive?s first day of employment with the Company, which will be February 28, 2022 (the ?Effective Date?). This Agreement supersedes in all respects all prior ag

February 14, 2022 SC 13G/A

CGEM / Cullinan Oncology Inc / BIOTECHNOLOGY VALUE FUND L P - AMENDMENT NO. 2 TO THE SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 2)1 Cullinan Oncology, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 230031106 (CUSIP Number)

February 11, 2022 SC 13G/A

CGEM / Cullinan Oncology Inc / Foresite Capital Fund V, L.P. - SC 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b) (Amendment No. 1)* Cullinan Oncology, Inc. (Name of Issuer) Common Stock, par value $0.0001 (Title of Class of Securities) 230031106 (CUSIP Number) December 31, 2021 (Date of

February 11, 2022 SC 13G

CGEM / Cullinan Oncology Inc / CHI Advisors LLC - CHI ADVISORS LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 Cullinan Oncology, Inc. (Name of Issuer) Common Stock, Par Value $0.0001 per share (Title of Class of Securities) 230031106 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

February 10, 2022 SC 13G

CGEM / Cullinan Oncology Inc / Jovan-Embiricos Morana - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) CULLINAN ONCOLOGY, INC. (Name of Issuer) Common Stock, $0.0001 par value (Title of Class of Securities) 230031106 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursu

February 9, 2022 SC 13G

CGEM / Cullinan Oncology Inc / VANGUARD GROUP INC - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: Cullinan Oncology Inc. Title of Class of Securities: Common Stock CUSIP Number: 230031106 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d-1(b) ☐ 

December 29, 2021 8-K

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): December 27, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissi

December 20, 2021 SC 13G/A

CGEM / Cullinan Oncology Inc / BIOTECHNOLOGY VALUE FUND L P - AMENDMENT NO. 1 TO THE SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 1)1 Cullinan Oncology, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 230031106 (CUSIP Number)

December 16, 2021 EX-99.2

Important Notice and Disclaimers This presentation contains forward-looking statements of Cullinan Oncology, Inc. (“Cullinan,” “we” or “our”). These forward-looking statements include, but are not limited to, express or implied statements regarding C

Exhibit 99.2 Mining for Tomorrow?s Cures CLN-081 Clinical Update December 2021 Important Notice and Disclaimers This presentation contains forward-looking statements of Cullinan Oncology, Inc. (?Cullinan,? ?we? or ?our?). These forward-looking statements include, but are not limited to, express or implied statements regarding Cullinan?s beliefs and expectations regarding our preclinical and clinic

December 16, 2021 8-K

Regulation FD Disclosure, 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 16, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissi

December 16, 2021 EX-99.1

Cullinan Oncology Announces Updated Phase 1/2a Data for CLN-081 in NSCLC EGFR Exon 20 Patients CLN-081 continues to demonstrate a differentiated clinical profile at the recommended Phase 2 dose of 100mg BID Continued high response rate with favorable

Exhibit 99.1 Cullinan Oncology Announces Updated Phase 1/2a Data for CLN-081 in NSCLC EGFR Exon 20 Patients CLN-081 continues to demonstrate a differentiated clinical profile at the recommended Phase 2 dose of 100mg BID Continued high response rate with favorable safety and tolerability profile observed in heavily pre-treated patients at 100mg BID Encouraging durable responses and progression free

November 9, 2021 8-K

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 9, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissio

November 9, 2021 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Third Quarter 2021 Financial Results

Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports Third Quarter 2021 Financial Results Cullinan Pearl clinical update, including data from patients enrolled in the Phase 2a expansion 100 mg BID cohort, planned for fourth quarter 2021 Cullinan MICA and Cullinan Florentine programs to advance into clinical trials by year end 2021 Strong balance sheet with cash and investments of $

November 9, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 September 30, 2021 OR ? 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: 001-39856 CULLI

November 8, 2021 SC 13G

CGEM / Cullinan Oncology Inc / BIOTECHNOLOGY VALUE FUND L P Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. )1 Cullinan Oncology, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 230031106 (CUSIP Number)

November 8, 2021 EX-99.1

Joint Filing Agreement

Exhibit 99.1 Joint Filing Agreement The undersigned hereby agree that the Statement on Schedule 13G dated November 8, 2021 with respect to the shares of Common Stock, $0.0001 par value per share of Cullinan Oncology, Inc., a Delaware corporation, and any further amendments thereto executed by each and any of the undersigned shall be filed on behalf of each of the undersigned pursuant to and in acc

October 18, 2021 EX-10.1

Employment Agreement, effective as of October 18, 2021, by and between the Registrant and Nadim Ahmed (incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the SEC on October 18, 2021).

Exhibit 10.1 Execution Version EMPLOYMENT AGREEMENT This Employment Agreement (?Agreement?) is made between Cullinan Oncology, Inc., a Delaware corporation (the ?Company?), and Nadim Ahmed (the ?Executive?) and is effective as of the Executive?s first day of employment with the Company, which will be October 18, 2021 (the ?Effective Date?). This Agreement supersedes in all respects all prior agree

October 18, 2021 EX-99.1

Cullinan Oncology Appoints Nadim Ahmed as Chief Executive Officer

Exhibit 99.1 Cullinan Oncology Appoints Nadim Ahmed as Chief Executive Officer Ahmed?s appointment brings broad development and operational leadership experience to Cullinan, reflecting the advancement of its pipeline and transition to a later-stage oncology company CAMBRIDGE, Mass., October 18, 2021 ? Cullinan Oncology, Inc. (Nasdaq: CGEM) (?Cullinan? or ?the Company?), a biopharmaceutical compan

October 18, 2021 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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): October 15, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commissio

August 10, 2021 EX-99.1

Cullinan Oncology Provides Corporate Update and Reports Second Quarter 2021 Financial Results

Exhibit 99.1 Cullinan Oncology Provides Corporate Update and Reports Second Quarter 2021 Financial Results Follow-up Cullinan Pearl data from Phase 1 portion of ongoing trial showed increased disease control rate (DCR) of 92% in the 100mg dose cohort IND clearance of two immuno-oncology pipeline programs, Cullinan MICA and Cullinan Florentine, with clinical trial starts for each program expected i

August 10, 2021 EX-10.1

Consulting Agreement, dated May 20, 2021, among the Registrant and Jon Wigginton, M.D.

Exhibit 10.1 CONSULTING AGREEMENT THIS CONSULTING AGREEMENT (the "Agreement"), made as of May 20, 2021 is entered into by Cullinan Oncology, Inc. a Delaware corporation (the "Company"), and Jon Wigginton, M.D., (the "Consultant"). INTRODUCTION The Company and the Consultant desire to establish the terms and conditions under which the Consultant will provide Services to the Company. In consideratio

August 10, 2021 8-K

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 10, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission

August 10, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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, 2021 OR ? 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: 001-39856 CULLINAN O

July 1, 2021 8-K

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): June 25, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission F

June 4, 2021 8-K

Regulation FD Disclosure, 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): June 4, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission Fi

June 4, 2021 EX-99.2

Important Notice and Disclaimers This presentation contains forward-looking statements of Cullinan Oncology, Inc. (“Cullinan,” “we” or “our”) within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements

Exhibit 99.2 Cullinan Pearl 2021 ASCO Update on CLN-081 June 4, 2021Exhibit 99.2 Cullinan Pearl 2021 ASCO Update on CLN-081 June 4, 2021 Important Notice and Disclaimers This presentation contains forward-looking statements of Cullinan Oncology, Inc. (?Cullinan,? ?we? or ?our?) within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but

June 4, 2021 EX-99.1

Cullinan Oncology Announces Phase 1/2a Interim Data For Cullinan Pearl’s CLN-081 in NSCLC EGFR Exon 20 Patients

Exhibit 99.1 Cullinan Oncology Announces Phase 1/2a Interim Data For Cullinan Pearl?s CLN-081 in NSCLC EGFR Exon 20 Patients ? CLN-081 Continues to Demonstrate Acceptable Overall Safety and Tolerability, With Encouraging GI Toxicity Profile ? As of the Data Cutoff, No Grade 3 TRAE Diarrhea at Doses Below 150mg BID; No Grade 3 Rash TRAEs ? Objective Responses Were Observed Across the Dose Range, wi

May 21, 2021 8-K

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): May 17, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission Fi

May 14, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 ? 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: 001-39856 CULLINAN

May 14, 2021 EX-99.1

Cullinan Oncology Reports First Quarter 2021 Financial Results

Exhibit 99.1 Cullinan Oncology Reports First Quarter 2021 Financial Results Continued advancement of broad portfolio, highlighted by initiation of Phase 2a dose expansion of Cullinan Pearl in NSCLC patients with EGFRex20ins mutations Cash, cash equivalents and investments of $473.0 million as of March 31, 2021 post completion of Initial Public Offering in early January 2021 Updated Cullinan Pearl

May 14, 2021 8-K

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 14, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-3879991 (State or other jurisdiction of incorporation) (Commission Fi

April 29, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION (Rule 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) 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 b

April 29, 2021 DEF 14A

- DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) Information Required in Proxy Statement Schedule 14A Information 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 ? Confid

March 30, 2021 8-K

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 30, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-387991 (State or other jurisdiction of incorporation) (Commission F

March 30, 2021 EX-3.1

Second Amended and Restated Certificate of Incorporation of the Registrant, as amended by the Certificate of Amendment, effective as of February 25, 2021 (incorporated by reference to Exhibit 3.1 of the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC on March 30, 2021).

Exhibit 3.1 SECOND AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. Cullinan Management, Inc., a corporation organized and existing under the laws of the State of Delaware (the ?Corporation?), hereby certifies as follows: 1.The name of the Corporation is Cullinan Management, Inc. The date of the filing of its original Certificate of Incorporation with the Secretary of

March 30, 2021 EX-3.2

Second Amended and Restated Bylaws of the Registrant, effective as of February 25, 2021 (incorporated by reference to Exhibit 3.2 of the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC on March 30, 2021).

Exhibit 3.2 SECOND AMENDED AND RESTATED BYLAWS OF CULLINAN ONCOLOGY, INC. (the ?Corporation?) ARTICLE I Stockholders SECTION 1.Annual Meeting. The annual meeting of stockholders (any such meeting being referred to in these Bylaws as an ?Annual Meeting?) shall be held at the hour, date and place within or without the United States which is fixed by the Board of Directors, which time, date and place

March 30, 2021 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 December 31, 2020 OR ? 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: 001-39856 CULLINAN ONCOL

March 30, 2021 EX-99.1

Cullinan Oncology Reports Full Year 2020 Financial Results and Business Highlights

EX-99.1 Exhibit 99.1 Cullinan Oncology Reports Full Year 2020 Financial Results and Business Highlights Pipeline Progress: Clinical and preclinical programs continue to advance, with encouraging initial Cullinan Pearl data and additional INDs to be filed in 2021 for immuno-oncology assets Cullinan Florentine and Cullinan MICA Balance Sheet: Completion of Series C financing ($131.2M) in December 20

March 30, 2021 EX-4.3

Description of Securities (incorporated by reference to Exhibit 4.3 of the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC on March 30, 2021).

Exhibit 4.3 Description of the Registrant?s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934, as amended The following summary of the general terms and provisions of the registered capital stock of Cullinan Oncology, Inc. (?Cullinan?, ?we?, ?our?) does not purport to be complete and is subject to, and qualified in its entirety by, reference to our Second Amended

March 30, 2021 EX-4.2

Registration Rights Agreement, dated January 7, 2021, among the Registrant and certain of its stockholders (incorporated by reference to Exhibit 4.2 of the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC on March 30, 2021).

Exhibit 4.2 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this ?Agreement?) is made as of the 7th day of January, 2021, by and among Cullinan Management, Inc., a Delaware corporation (the ?Company?), and each of the investors listed on Schedule A hereto, each of which is referred to in this Agreement as an ?Investor?. RECITALS WHEREAS, the Investors and the Company hereby agree

February 26, 2021 EX-3.1

Certificate of Amendment to the Second Amended and Restated Certificate of Incorporation, effective as of February 25, 2021.

Exhibit 3.1 CERTIFICATE OF AMENDMENT TO THE SECOND AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. (Pursuant to Section 242 of the General Corporation Law of the State of Delaware) Cullinan Management, Inc. (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 ce

February 26, 2021 EX-3.2

Second Amended and Restated Bylaws of Cullinan Oncology, Inc., effective as of February 25, 2021.

Exhibit 3.2 SECOND AMENDED AND RESTATED BYLAWS OF CULLINAN ONCOLOGY, INC. (the ?Corporation?) ARTICLE I Stockholders SECTION 1. Annual Meeting. The annual meeting of stockholders (any such meeting being referred to in these Bylaws as an ?Annual Meeting?) shall be held at the hour, date and place within or without the United States which is fixed by the Board of Directors, which time, date and plac

February 26, 2021 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, 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 23, 2021 CULLINAN ONCOLOGY, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-387991 (State or other jurisdiction of incorporation) (Commissio

February 22, 2021 8-K

Regulation FD Disclosure, 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 22, 2021 CULLINAN MANAGEMENT, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-387991 (State or other jurisdiction of incorporation) (Commiss

February 22, 2021 EX-99.1

Cullinan Management, Inc. Announces Business Update

EX-99.1 Exhibit 99.1 Cullinan Management, Inc. Announces Business Update February 22, 2021 • Enrollment expansion in CLN-081 NSCLC EGFRex20ins Phase 1/2a trial • Cullinan withdraws IND application for CLN-049 in Relapsed/Refractory AML • CLN-619 IND submission planned for the second quarter of 2021 • Cullinan to present at SVB Leerink Conference February 26, 2021 Cambridge, MA, February 22, 2021 –

January 19, 2021 SC 13D

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )* Cullinan Management, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) (CUSIP Number) Ans

SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )* Cullinan Management, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 230031106 (CUSIP Number) Ansbert Gadicke MPM Asset Management 450 Kendall Street Cambridge, MA 01242 Telephone: (617) 425-9200 (Name, Address and Telephone Numbe

January 19, 2021 EX-99.C

Joint Filing Statement

Exhibit C Joint Filing Statement I, the undersigned, hereby express my agreement that the attached Schedule 13D (and any amendments thereto) relating to the beneficial ownership by the undersigned of the equity securities of Cullinan Management, Inc.

January 15, 2021 SC 13G

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b) (Amendment No. __________

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b) (Amendment No. )* Cullinan Management, Inc. (Name of Issuer) Common Stock, par value $0.0001 (Title of Class of Securities) 230031106 (CUSIP Number) January 8, 2021 (Date of E

January 13, 2021 EX-3.2

Second Amended and Restated Certificate of Incorporation of Cullinan Management, Inc., as currently in effect

EX-3.2 Exhibit 3.2 SECOND AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. Cullinan Management, Inc., a corporation organized and existing under the laws of the State of Delaware (the “Corporation”), hereby certifies as follows: 1. The name of the Corporation is Cullinan Management, Inc. The date of the filing of its original Certificate of Incorporation with the Secr

January 13, 2021 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits - 8-K

8-K 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 7, 2021 CULLINAN MANAGEMENT, INC. (Exact name of registrant as specified in its charter) Delaware 001-39856 81-387991 (State or other jurisdiction of incorporation) (Commi

January 13, 2021 EX-3.1

Amended and Restated Certificate of Incorporation, as amended

EX-3.1 Exhibit 3.1 CERTIFICATE OF AMENDMENT TO CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. Pursuant to Section 242 of the General Corporation Law of the State of Delaware Cullinan Management, Inc. (the “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: 1. The initial Certific

January 13, 2021 EX-3.3

Amended and Restated Bylaws of Cullinan Management, Inc., as currently in effect

EX-3.3 Exhibit 3.3 AMENDED AND RESTATED BYLAWS OF CULLINAN MANAGEMENT, INC. (the “Corporation”) ARTICLE I Stockholders SECTION 1. Annual Meeting. The annual meeting of stockholders (any such meeting being referred to in these Bylaws as an “Annual Meeting”) shall be held at the hour, date and place within or without the United States which is fixed by the Board of Directors, which time, date and pl

January 11, 2021 424B4

11,900,000 Shares Common Stock

424B4 Table of Contents Filed Pursuant to Rule 424(b)(4) Registration Nos. 333-251512 and 333-251949 Prospectus 11,900,000 Shares Common Stock We are offering 11,900,000 shares of our common stock. This is our initial public offering. Prior to this offering, there has been no public market for our shares. The initial public offering price is $21.00 per share. Our common stock has been approved for

January 7, 2021 S-1MEF

- S-1MEF

S-1MEF As filed with the Securities and Exchange Commission on January 7, 2021. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT Under The Securities Act of 1933 Cullinan Management, Inc. (Exact name of registrant as specified in its charter) Delaware 2836 81-387991 (State or other jurisdiction of incorporation or organiz

January 7, 2021 S-8

Form S-8, File No. 333-251943

Form S-8 As filed with the Securities and Exchange Commission on January 7, 2021 Registration No.

January 6, 2021 CORRESP

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Goodwin Procter LLP 100 Northern Avenue Boston, MA 02210 goodwinlaw.com +1 617 570 1000 January 6, 2021 Vanessa Robertson Laura Crotty Kevin Vaughn Suzanne Hayes Office of Healthcare and Insurance Division of Corporation Finance Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: Cullinan Management, Inc. Amendment No. 2 to Registration Statement on Form S-1 Filed Janu

January 6, 2021 S-1/A

Amendment No. 3 to the registrant’s Registration Statement on Form S-1

S-1/A Table of Contents As filed with the Securities and Exchange Commission on January 6, 2021.

January 6, 2021 8-A12B

Form 8-A

8-A12B UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Cullinan Management, Inc. (Exact name of registrant as specified in its charter) Delaware 81-3879991 (State of incorporation or organization) (I.R.S. Employer Identification No.) One Main St

January 4, 2021 EX-3.2

Form of Second Amended and Restated Certificate of Incorporation of the Registrant, to be in effect immediately prior to completion of this offering.

EX-3.2 4 d19045dex32.htm EX-3.2 Exhibit 3.2 SECOND AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. Cullinan Management, Inc., a corporation organized and existing under the laws of the State of Delaware (the “Corporation”), hereby certifies as follows: 1. The name of the Corporation is Cullinan Management, Inc. The date of the filing of its original Certificate of In

January 4, 2021 EX-10.2

2021 Employee Stock Purchase Plan (incorporated by reference to Exhibit 10.2 of the Registrant’s Registration Statement on Form S-1 (File No. 333-251512) filed with the SEC on January 4, 2021).

EX-10.2 Exhibit 10.2 CULLINAN MANAGEMENT, INC. 2021 EMPLOYEE STOCK PURCHASE PLAN The purpose of the Cullinan Management, Inc. 2021 Employee Stock Purchase Plan (the “Plan”) is to provide eligible employees of Cullinan Management, Inc. (the “Company”) and each Designated Company (as defined in Section 11) with opportunities to purchase shares of the Company’s common stock, par value $0.0001 per sha

January 4, 2021 EX-10.25

Services Agreement, by and between the Company and Patrick Baeuerle.

EX-10.25 Exhibit 10.25 SERVICE AGREEMENT This Service Agreement (“Agreement”) is made between Cullinan Management, Inc., a Delaware corporation (the “Company”), and Patrick Baeuerle, Ph.D. (the “Executive”) and is effective as of the closing of the Company’s first underwritten public offering of its equity securities pursuant to an effective registration statement under the Securities Act of 1933,

January 4, 2021 EX-3.5

Form of Certificate of Amendment to Certificate of Incorporation of the Registrant, to be in effect immediately prior to the Reorganization.

EX-3.5 Exhibit 3.5 CERTIFICATE OF AMENDMENT TO CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. Pursuant to Section 242 of the General Corporation Law of the State of Delaware Cullinan Management, Inc. (the “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: 1. The initial Certific

January 4, 2021 EX-10.22

Form of Contribution Agreement (incorporated by reference to Exhibit 10.22 of the Registrant’s Registration Statement on Form S-1 (File No. 333-251512) filed with the SEC on January 4, 2021).

EX-10.22 13 d19045dex1022.htm EX-10.22 Exhibit 10.22 CULLINAN MANAGEMENT, INC. CONTRIBUTION AGREEMENT THIS CONTRIBUTION AGREEMENT (this “Agreement”) is made as of [●], 2021, by and among Cullinan Management, Inc., a Delaware corporation (the “Company”), and Cullinan Oncology, LLC, a Delaware limited liability company (the “Contributor”). RECITALS: WHEREAS, the Contributor owns certain interests in

January 4, 2021 EX-10.1

2021 Stock Option and Incentive Plan and form of award agreements thereunder (incorporated by reference to Exhibit 10.1 of the Registrant’s Registration Statement on Form S-1 (File No. 333-251512) filed with the SEC on January 4, 2021).

EX-10.1 Exhibit 10.1 CULLINAN MANAGEMENT, INC. 2021 STOCK OPTION AND INCENTIVE PLAN SECTION 1. GENERAL PURPOSE OF THE PLAN; DEFINITIONS The name of the plan is the Cullinan Management, Inc. 2021 Stock Option and Incentive Plan (the “Plan”). The purpose of the Plan is to encourage and enable the employees, Non-Employee Directors and Consultants of Cullinan Management, Inc. (the “Company”) and its A

January 4, 2021 CORRESP

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VIA EDGAR January 4, 2021 U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-6010 Attention: Vanessa Robertson Laura Crotty Kevin Vaughn Suzanne Hayes Re: Cullinan Management, Inc. (the ?Company?) Registration Statement on Form S-1 File No. 333-251512 Ladies and Gentleman, Pursuant to Rule 461 under the Securities Act of 1933, as amend

January 4, 2021 EX-2.1

Form of Agreement and Plan of Merger by and between Cullinan Oncology, LLC and Cullinan Management, Inc.

EX-2.1 Exhibit 2.1 AGREEMENT AND PLAN OF MERGER of CULLINAN ONCOLOGY, LLC with and into CULLINAN MANAGEMENT, INC. THIS AGREEMENT AND PLAN OF MERGER (the “Plan of Merger”) is made this [ ], by and between Cullinan Oncology, LLC, a Delaware limited liability company (the “LLC”) and Cullinan Management, Inc., a Delaware corporation (the “Corporation”). WITNESSETH: WHEREAS, the Corporation is wholly o

January 4, 2021 EX-4.3

Form of Registration Rights Agreement, among the Registrant and certain of its stockholders, to be in effect immediately prior to completion of this offering.

EX-4.3 Exhibit 4.3 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made as of the [●] day of January, 2021, by and among Cullinan Management, Inc., a Delaware corporation (the “Company”), and each of the investors listed on Schedule A hereto, each of which is referred to in this Agreement as an “Investor”. RECITALS WHEREAS, the Investors and the Company hereb

January 4, 2021 EX-1.1

Form of Underwriting Agreement.

EX-1.1 Exhibit 1.1 [•] Shares CULLINAN MANAGEMENT, INC. COMMON STOCK (PAR VALUE $0.0001 PER SHARE) UNDERWRITING AGREEMENT January [•], 2021 1 January [•], 2021 Morgan Stanley & Co. LLC SVB Leerink LLC Evercore Group LLC c/o Morgan Stanley & Co. LLC 1585 Broadway New York, New York 10036 c/o SVB Leerink LLC One Federal Street, 37th Floor Boston, Massachusetts 02110 c/o Evercore Group LLC 55 East 52

January 4, 2021 EX-3.7

Form of Certificate of Amendment to Amended and Restated Certificate of Incorporation, to be in effect prior to the effectiveness of this registration statement.

EX-3.7 Exhibit 3.7 CERTIFICATE OF AMENDMENT TO THE AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. (Pursuant to Section 242 of the General Corporation Law of the State of Delaware) Cullinan Management, Inc. (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 ce

January 4, 2021 EX-3.4

Form of Amended and Restated Bylaws of the Registrant, to be in effect upon the effectiveness of this registration statement.

EX-3.4 Exhibit 3.4 AMENDED AND RESTATED BYLAWS OF CULLINAN MANAGEMENT, INC. (the “Corporation”) ARTICLE I Stockholders SECTION 1. Annual Meeting. The annual meeting of stockholders (any such meeting being referred to in these Bylaws as an “Annual Meeting”) shall be held at the hour, date and place within or without the United States which is fixed by the Board of Directors, which time, date and pl

January 4, 2021 S-1/A

- S-1/A

S-1/A Table of Contents As filed with the Securities and Exchange Commission on January 4, 2021.

January 4, 2021 CORRESP

-

January 4, 2021 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-6010 Attention: Vanessa Robertson Laura Crotty Kevin Vaughn Suzanne Hayes Re: Cullinan Management, Inc. (the ?Company?) Registration Statement on Form S-1 File No. 333-251512 Ladies and Gentleman: In connection with the above-referenced Registration Statement,

January 4, 2021 EX-3.6

Form of Amended and Restated Certificate of Incorporation of the Registrant, to be in effect in connection with the Reorganization.

EX-3.6 Exhibit 3.6 AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CULLINAN MANAGEMENT, INC. (Pursuant to Sections 242 and 245 of the General Corporation Law of the State of Delaware) Cullinan Management, Inc., a corporation organized and existing under and by virtue of the provisions of the General Corporation Law of the State of Delaware (the “General Corporation Law”), DOES HEREBY CERTIFY:

December 28, 2020 S-1/A

- S-1/A

S-1/A Table of Contents As filed with the Securities and Exchange Commission on December 28, 2020.

December 28, 2020 EX-4.1

Specimen Common Stock Certificate (incorporated by reference to Exhibit 4.1 of the Registrant’s Registration Statement on Form S-1 (File No. 333-251512) filed with the SEC on December 28, 2020).

EX-4.1 Exhibit 4.1 ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS# COMMON STOCK PAR VALUE $.0001 COMMON STOCK Certificate Number ZQ00000000 Shares * * 000000 ****************** * * * 000000 ***************** **** 000000 **************** ***** 000000 *************** ****** 000000 ************** CULLINAN MANAGEMENT, INC. INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE THIS CERTIFIES THAT MR

December 28, 2020 EX-10.24

License Agreement, dated December 24, 2020, by and between Cullinan Pearl Corp. and Zai Lab (Shanghai) Co., Ltd.

EX-10.24 Exhibit 10.24 Portions of this Exhibit have been redacted because they are both (i) not material and (ii) would be competitively harmful if publicly disclosed. Information that was omitted has been noted in this document with a placeholder identified by the mark “[***]”. EXECUTION VERSION LICENSE AGREEMENT This License Agreement (this “Agreement”) is made as of December 24, 2020 (the “Eff

December 18, 2020 EX-10.7

Collaboration Agreement, dated November 28, 2018, by and between Adimab, LLC and the Registrant (incorporated by reference to Exhibit 10.7 of the Registrant’s Registration Statement on Form S-1 (File No. 333-251512) filed with the SEC on December 18, 2020).

EX-10.7 Exhibit 10.7 Execution Copy CONFIDENTIAL Portions of this Exhibit have been redacted because they are both (i) not material and (ii) would be competitively harmful if publicly disclosed. Information that was omitted has been noted in this document with a placeholder identified by the mark “[***]”. COLLABORATION AGREEMENT THIS COLLABORATION AGREEMENT (the “Agreement”) is made effective as o

December 18, 2020 CORRESP

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CORRESP Goodwin Procter LLP 100 Northern Avenue Boston, MA 02210 goodwinlaw.com +1 617 570 1000 FOIA Confidential Treatment Request The entity requesting confidential treatment is: Cullinan Oncology, LLC One Main Street, Suite 520 Cambridge, MA 02142 Attn: Owen Hughes, Chief Executive Officer Telephone: (617) 410-4650 CERTAIN PORTIONS OF THIS LETTER HAVE BEEN OMITTED FROM THE VERSION FILED VIA EDG

December 18, 2020 EX-10.15

Consulting Agreement, dated January 1, 2019, by and between Cullinan Management, Inc. and Patrick Baeuerle.

EX-10.15 Exhibit 10.15 CONSULTING AGREEMENT THIS CONSULTING AGREEMENT (the “Agreement”), made as of January 1, 2019 is entered into by Cullinan Management, Inc. a Delaware corporation (the “Company”), and Patrick Baeuerle (the “Consultant”). INTRODUCTION The Company and the Consultant desire to establish the terms and conditions under which the Consultant will provide Services to the Company. In c

December 18, 2020 EX-10.6

Exclusive Patent License Agreement, dated December 12, 2019, as amended on April 3, 2020, by and between Massachusetts Institute of Technology and Cullinan Amber Corp. (incorporated by reference to Exhibit 10.6 of the Registrant’s Registration Statement on Form S-1 (File No. 333-251512) filed with the SEC on December 18, 2020).

EX-10.6 Exhibit 10.6 Portions of this Exhibit have been redacted because they are both (i) not material and (ii) would be competitively harmful if publicly disclosed. Information that was omitted has been noted in this document with a placeholder identified by the mark “[***]”. MASSACHUSETTS INSTITUTE OF TECHNOLOGY AND CULLINAN AMBER CORP. EXCLUSIVE PATENT LICENSE AGREEMENT 1 MASSACHUSETTS INSTITU

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