STRI / STR Holdings Inc - Pemfailan SEC, Laporan Tahunan, Penyata Proksi

STR Holdings Inc
US ˙ OTC
SIMBOL INI TIDAK AKTIF LAGI

Statistik Asas
CIK 1473597
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 STR Holdings Inc
SEC Filings (Chronological Order)
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February 14, 2020 SC 13G/A

STRI / STR Holdings, Inc. / Tofias Michael D - 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)* STR Holdings, Inc. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 78478V209 (CUSIP Number) December 31, 2019 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

February 7, 2020 S-8 POS

STRI / STR Holdings, Inc. S-8 POS - - FORM S-8 POS

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 7, 2020 Registration No.

February 7, 2020 S-8 POS

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 7, 2020

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 7, 2020 Registration No.

February 7, 2020 S-8 POS

STRI / STR Holdings, Inc. S-8 POS - - FORM S-8 POS

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 7, 2020 Registration No.

February 7, 2020 15-12B

STRI / STR Holdings, Inc. 15-12B - - FORM 15

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-34529 STR Holdings, Inc. (Exact name of registrant as specified in its c

December 16, 2019 8-K

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): December 12, 2019 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emp

November 14, 2019 10-Q

Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2019 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 001–34529 STR Holdings, Inc.

November 14, 2019 EX-10.1

English translation of REINDUS Loan, dated as of September 10, 2019, by and between Specialized Technology Resources España, S.A. and Spanish Ministry of Industry, Commerce and Tourism (filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed on November 14, 2019 and incorporated herein by reference).

EX-10.1 2 exh101.htm EXHIBIT 10.1 Exhibit 10.1 GENERAL SECRETARIAT OF INDUSTRY AND SMALL AND MEDIUM SIZED COMPANIES MINISTRY OF INDUSTRY, TRADE AND TOURISM DIRECTORATE-GENERAL OF INDUSTRY AND SMALL AND MEDIUM- SIZED COMPANIES DEFINITIVE RESOLUTION GRANTING FINANCIAL SUPPORT, REINDUSTRIALIZATION AND STRENGTHENING OF INDUSTRIAL COMPETITIVENESS Name of the entity: SPECIALIZED TECHNOLOGY RESOURCES ESP

September 27, 2019 EX-99.1

STR Holdings, Inc. 2009 Equity Incentive Plan (Amended and Restated as of September 24, 2019)

Exhibit 99.1 STR Holdings, Inc. 2009 Equity Incentive Plan (Amended and Restated as of September 24, 2019) Article 1. Establishment & Purpose 1.1 Establishment. STR Holdings, Inc., a Delaware corporation (hereinafter referred to as the “Company”), hereby adopts the 2009 Equity Incentive Plan (Amended and Restated as of September 24, 2019) (hereinafter referred to as the “Plan”) as set forth in thi

September 27, 2019 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, 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): September 24, 2019 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Em

August 15, 2019 EX-99.1

Chairman’s Letter

Exhibit 99.1 Chairman’s Letter To my fellow shareholders: STR Holdings, Inc. will hold its annual meeting on September 24, 2019 at our headquarters in Enfield, CT. We chose to delay this meeting by a few months to allow time for a few important initiatives to develop more fully such that we could report them to you with greater certainty and discuss their impact on the direction of the company. Th

August 15, 2019 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): August 15, 2019 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 15, 2019 DEFA14A

STRI / STR Holdings, Inc. DEFA14A - - DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (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 by Rule 14a-6(e)(2)) ☐ Defin

August 15, 2019 DEF 14A

STRI / STR Holdings, Inc. DEF 14A - - DEF14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (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 by Rule 14a-6(e)(2)) ☒ Defin

August 14, 2019 10-Q

STRI / STR Holdings, Inc. 10-Q - Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2019 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

August 2, 2019 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 29, 2019 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

May 14, 2019 EX-10.2

English translation of Comfort Letter, dated as of January 8, 2019, by and between Specialized Technology Resources, S.A.U. and Sociedad Regional de Promoción del Principado de Asturias, S.A. (filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q filed on May 14, 2019 and incorporated herein by reference).

Exhibit 10.2 ALFREDO SUAREZ DIAZ Sworn Translator - Interpreter No . 5408 Spanish Ministry of Foreign Affairs Tel. (+34) 606158282 [email protected] [Sworn translation of a Spanish document] SOCIEDAD SOCIEDAD REGIONAL PROMOCIONAL DEL PRINCIPADO DE ASTURIAS, S.A. For the Attention of Mrs Eva Pando Iglesias President and Managin g Director Parque Tecnol6gico de Asturias 33428 Llanera (Astur

May 14, 2019 10-Q

STRI / STR Holdings, Inc. 10-Q Quarterly Report FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2019 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 001–34529 STR Holdings, Inc.

May 14, 2019 EX-10.1

English translation of Mortgage Loan, dated as of March 20, 2019, by and between Specialized Technology Resources España, S.A. and Sociedad Regional de Promoción del Principado de Asturias, S.A. (filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed on May 14, 2019 and incorporated herein by reference).

Exhibit 10.1 CLASE a.a OM6783927 ALFREDO SUAREZ D I AZ Sworn Translator - Interpreter No. 5408 Spanish Ministry of Foreign Affairs Tel. (+34) 606158282 traductoralfredo@gmail . com [Sworn translation of a Spanish document} [Notary Seal and stamp] MORTGAGE LOAN BETWEEN SOCIEDAD REGIONAL DE PROMOCION DEL PRINCIPADO DE ASTURIAS , S.A. AND SPECIALIZED TECHNOLOGY RESOURCES ESPANA , S . A. NUMBER 575 In

April 26, 2019 10-K/A

STRI / STR Holdings, Inc. 10-K/A (Annual Report) FORM 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No.1) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission file number 001-34529 STR H

March 27, 2019 10-K

STRI / STR Holdings, Inc. FORM 10-K (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission file number 001-34529 STR Holdings, Inc. (Exac

March 27, 2019 EX-21

Subsidiaries of STR Holdings, Inc.

EX-21 3 exh21.htm EXHIBIT 21 Exhibit 21 SUBSIDIARIES OF STR HOLDINGS, INC. Subsidiary State or other Jurisdiction of Incorporation Specialized Technology Resources Espãna S.A. Spain Specialized Technology Resources, Inc. Delaware Specialized Technology Resources (Connecticut), LLC Connecticut Specialized Technology Resources (Hong Kong), Ltd. Hong Kong Specialized Technology Resources (Malaysia) S

March 27, 2019 EX-10.2

Amended and restated 2009 Equity Incentive Plan.

Exhibit 10.2 STR Holdings, Inc. 2009 Equity Incentive Plan (Amended and Restated dated as of February 20, 2018) Article 1. Establishment & Purpose 1.1 Establishment. STR Holdings, Inc., a Delaware corporation (hereinafter referred to as the “Company”), establishes the 2009 Equity Incentive Plan (hereinafter referred to as the “Plan”) as set forth in this document. 1.2 Purpose of the Plan. The purp

March 15, 2019 8-K

Entry into a Material Definitive Agreement

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 13, 2019 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employ

February 27, 2019 EX-10.1

Purchase and Sale Agreement, effective January 10, 2019, by and between Specialized Technology Resources (Malaysia) SDN BHD and JC Cocoa SDN BHD (filed as Exhibit 10.1 to the Company’s Form 8-K filed on February 27, 2019, and incorporated herein by reference).

Exhibit 10.1 Dated Effective 10 JAN 2019 Between SPECIALIZED TECHNOLOGY RESOURCES (M) SDN. BHD. (Company No. 807636-H) and JB COCOA SDN BHD (Company No. 514587-A) Agreement For Sale Of Sub-Lease Contents Recitals 1. Definitions and interpretation 3 1.1 Definitions in this Agreement 3 1.2 Interpretation 7 2. Sale of Properties 8 2.1 Sale and Purchase 8 2.2 Conditions of Sale 9 3. Consideration 9 3.

February 27, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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): January 10, 2019 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

February 12, 2019 SC 13G/A

STRI / STR Holdings, Inc. / Tofias Michael D - SC 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* STR Holdings, Inc. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 78478V209 (CUSIP Number) December 31, 2018 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

January 25, 2019 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): January 25, 2019 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

January 25, 2019 EX-10.1

Letter Agreement, dated January 25, 2019, by and between STR Holdings, Inc. and Thomas D. Vitro.

Exhibit 10.1 January 25, 2019 By Hand Thomas D. Vitro 30 Raymond Circle Westfield MA 01085 Re: Retention Bonus Dear Tom: In recognition of the importance to STR Holdings, Inc. (the “Company”) of maintaining a cohesive senior finance team while the Company developed and executed on its strategic plan, we had provided you with a special retention plan that awarded certain bonuses if you remained wit

January 3, 2019 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 28, 2018 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emp

November 14, 2018 10-Q

STRI / STR Holdings, Inc. FORM 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2018 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

August 16, 2018 SC 13G

STRI / STR Holdings, Inc. / Tofias Michael D - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* STR Holdings, Inc. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 78478V209 (CUSIP Number) August 6, 2018 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

August 10, 2018 EX-10.1

Amended and Restated 2009 Equity Incentive Plan

Exhibit 10.1 STR Holdings, Inc. 2009 Equity Incentive Plan (Amended and Restated dated as of February 20, 2018) Article 1. Establishment & Purpose 1.1 Establishment. STR Holdings, Inc., a Delaware corporation (hereinafter referred to as the “Company”), establishes the 2009 Equity Incentive Plan (hereinafter referred to as the “Plan”) as set forth in this document. 1.2 Purpose of the Plan. The purp

August 10, 2018 10-Q

STRI / STR Holdings, Inc. FORM 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2018 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

June 28, 2018 8-K

Costs Associated with Exit or Disposal Activities

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 18, 2018 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

June 21, 2018 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 19, 2018 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

May 11, 2018 10-Q

STRI / STR Holdings, Inc. FORM 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2018 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

May 10, 2018 DEF 14A

STRI / STR Holdings, Inc. DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (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 by Rule 14a-6(e)(2)) ☒ Defin

May 10, 2018 EX-99.1

Chairman’s Letter

Exhibit 99.1 Chairman’s Letter To my fellow shareholders: STR will hold its Annual Shareholders Meeting on June 19, 2018, just over six months since the last such meeting held on December 5, 2017. This is noteworthy because we are intentionally advancing our meeting schedule to get more in line with customary timing, and perhaps more importantly because I’ll ask you in light of this advanced sched

May 10, 2018 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): May 10, 2018 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employer

April 27, 2018 10-K/A

STRI / STR Holdings, Inc. FORM 10-K/A (Annual Report)

10-K/A 1 f10ka042718.htm FORM 10-K/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No.1) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . C

April 2, 2018 EX-10.1

Termination Agreement, dated March 6, 2018, by and between Specialized Technology Resources Solar (Suzhou) Co., Ltd and Zhangjiagang Huhui Segpy Co., Ltd (filed as Exhibit 10.1 to the Company’s Form 8-K filed on April 2, 2018 (file no. 001-34529) and incorporated herein by reference).

Exhibit 10.1

April 2, 2018 8-K

Entry into a Material Definitive Agreement, Termination of 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): March 27, 2018 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employ

March 19, 2018 S-8

STRI / STR Holdings, Inc. FORM S-8

As filed with the Securities and Exchange Commission on March 19, 2018 Registration No.

March 16, 2018 EX-10.2

2009 Equity Incentive Plan (filed as Exhibit 10.2 to the Company’s Annual Report on Form 10-K filed on March 16, 2018 (file no. 001-34529) and incorporated herein by reference).

Exhibit 10.2 STR Holdings, Inc. 2009 Equity Incentive Plan (Amended and Restated dated as of February 20, 2018) Article 1. Establishment & Purpose 1.1 Establishment. STR Holdings, Inc., a Delaware corporation (hereinafter referred to as the “Company”), establishes the 2009 Equity Incentive Plan (hereinafter referred to as the “Plan”) as set forth in this document. 1.2 Purpose of the Plan. The purp

March 16, 2018 10-K

STRI / STR Holdings, Inc. FORM 10-K (Annual Report)

10-K 1 f10k031618p.htm FORM 10-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 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 0

March 16, 2018 EX-21

Subsidiaries of STR Holdings, Inc.

Exhibit 21 SUBSIDIARIES OF STR HOLDINGS, INC. Subsidiary State or other Jurisdiction of Incorporation Specialized Technology Resources Espãna S.A. Spain Specialized Technology Resources, Inc. Delaware Specialized Technology Resources (Connecticut), LLC Connecticut Specialized Technology Resources (Hong Kong), Ltd. Hong Kong Specialized Technology Resources (Malaysia) Sdn. Bhd. Malaysia 10 Water St

January 22, 2018 8-K

Regulation FD Disclosure

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 16, 2018 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

December 8, 2017 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): December 5, 2017 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

November 9, 2017 10-Q

STRI / STR Holdings, Inc. FORM 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2017 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 001–34529 STR Holdings, Inc.

October 25, 2017 DEF 14A

STR Holdings DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (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 by Rule 14a-6(e)(2)) ? Defin

October 25, 2017 EX-99.1

Chairman’s Letter

EX-99.1 2 exh991.htm EXHIBIT 99.1 Exhibit 99.1 Chairman’s Letter To my fellow shareholders: Thank you for your patience in waiting for our annual shareholders meeting and the publication of this 2016 annual report. The STR Board of Directors, along with senior management, had quite a lot to sort out during the past several months, including key strategies for the future of the Company. In any even

October 25, 2017 8-K

Regulation FD Disclosure, Termination of 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 25, 2017 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

August 11, 2017 10-Q

STRI / STR Holdings, Inc. FORM 10-Q (Quarterly Report)

10-Q 1 f10q081117p.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2017 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission fi

August 4, 2017 8-K

Termination of a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 31, 2017 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

May 11, 2017 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

10-Q 1 f10q051117p.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2017 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission f

May 8, 2017 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 2, 2017 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employer

April 28, 2017 10-K/A

STR Holdings FORM 10-K/A (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No.1) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2016 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 001-34529 STR H

March 22, 2017 EX-10.1

Retention Agreement, effective March 17, 2017, by and between STR Holdings, Inc. and Thomas D. Vitro

Exhibit 10.1 March 17, 2017 By Hand Thomas D. Vitro 30 Raymond Circle Westfield MA 01085 Re: Retention Bonus Dear Tom: As you know, we have been working closely with our board of directors and senior leadership for several months now to identify and evaluate strategic alternatives for STR. While I remain hopeful that this effort will yield an exciting opportunity, I am cognizant of the fact that t

March 22, 2017 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

8-K 1 f8k032217.htm FORM 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): March 16, 2017 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commis

March 9, 2017 EX-10.15

Purchase and Sale Agreement dated as of November 18, 2016, by and between Specialized Technology Resources Solar (Malaysia) SDN BHD and Tiong Nam Logistics Solutions SDN BHD (filed as Exhibit 10.15 to the Company’s Form 10-K filed on March 9, 2017 (file no. 001-34529) and incorporated herein by reference).

EX-10.15 3 exh1015.htm EXHIBIT 10.15 Exhibit 10.15

March 9, 2017 EX-21

SUBSIDIARIES OF STR HOLDINGS, INC.

Exhibit 21 SUBSIDIARIES OF STR HOLDINGS, INC. Subsidiary State or other Jurisdiction of Incorporation Specialized Technology Resources Esp?na S.A. Spain Specialized Technology Resources, Inc. Delaware Specialized Technology Resources (Connecticut), LLC Connecticut Specialized Technology Resources (Hong Kong), Ltd. Hong Kong Specialized Technology Resources (Malaysia) Sdn. Bhd. Malaysia 10 Water St

March 9, 2017 10-K

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

10-K 1 f10k030917p.htm FORM 10-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2016 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 0

March 9, 2017 EX-10.3

Executive Severance Agreement dated October 1, 2012 between the Company and Robert S. Yorgensen (filed as Exhibit 10.3 to the Company’s Form 10-K filed on March 9, 2017 (file no. 001-34529) and incorporated herein by reference).

Exhibit 10.3 SEVERANCE AGREEMENT This Agreement, is made as of October 1, 2012 (the “ Effective Date ”), by and between STR HOLDINGS, INC. a Delaware corporation (the “ Company ”), and Robert Yorgensen (the “Executive ”). WHEREAS , the Company considers it essential to the best interests of its stockholders to foster the continued employment of key management personnel; and WHEREAS , the Board rec

January 12, 2017 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): January 9, 2017 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

November 18, 2016 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): November 17, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emp

November 9, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2016 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 001–34529 STR Holdings, Inc.

October 14, 2016 8-K

Regulation FD Disclosure

8-K 1 f8k101416.htm FORM 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): October 14, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Comm

October 3, 2016 DEF 14A

STR Holdings DEFINITIVE PROXY STATEMENT

DEF 14A 1 def14a100316.htm DEFINITIVE PROXY STATEMENT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (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 Comm

October 3, 2016 DEFA14A

STR Holdings DEFINITIVE ADDITIONAL MATERIALS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (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 by Rule 14a-6(e)(2)) ? Defin

August 25, 2016 8-K

STR Holdings 8-K (Current Report/Significant Event)

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 19, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 25, 2016 8-K

STR Holdings 8-K (Current Report/Significant Event)

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 19, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 11, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2016 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 001–34529 STR Holdings, Inc.

July 15, 2016 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): July 12, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

July 5, 2016 8-K

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 29, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

June 29, 2016 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): June 27, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

June 13, 2016 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): June 13, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

June 13, 2016 EX-99.1

June 13, 2016

EX-99.1 2 a16-132511ex99d1.htm EX-99.1 Exhibit 99.1 June 13, 2016 STR Holdings, Inc. Announces Receipt of $8.3 Million IRS Tax Refund ENFIELD, Conn., June 13, 2016 (GLOBE NEWSWIRE) — STR Holdings, Inc. (OTCQX: STRI) (the Company), a global provider of encapsulants to the solar industry, today announced that it has received payment of an $8.3 million income tax refund from the Internal Revenue Serv

May 10, 2016 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

10-Q 1 f10q050616p.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2016 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission f

April 29, 2016 10-K/A

STR Holdings 10-K/A (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No.1) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2015 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission file number 001-34529 STR H

March 25, 2016 EX-24

EXHIBIT 24 STR Holdings, Inc.

Huiying (Julia) Ju POA EXHIBIT 24 STR Holdings, Inc. Power of Attorney for Executing Forms 3, 4 and 5 Know all men by these presents, that the undersigned, director or officer, or both, of STR Holdings, Inc., hereby constitutes and appoints each of Robert S. Yorgensen, Thomas D. Vitro, signing singly, the undersigned's true and lawful attorney-in-fact to: (1) execute for and on behalf of the under

March 22, 2016 EX-21

SUBSIDIARIES OF STR HOLDINGS, INC.

QuickLinks - Click here to rapidly navigate through this document Exhibit 21 SUBSIDIARIES OF STR HOLDINGS, INC.

March 22, 2016 10-K

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

Use these links to rapidly review the document TABLE OF CONTENTS PART IV Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 18, 2016 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): March 14, 2016 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employ

February 9, 2016 SC 13G/A

STRI / STR Holdings, Inc. / PRICE T ROWE ASSOCIATES INC /MD/ - STRI AS OF 12/31/2015 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5) STR HOLDINGS INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 78478V209 (CUSIP Number) December 31, 2015 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which this Schedule is

February 3, 2016 SC 13G/A

STRI / STR Holdings, Inc. / Miller Lloyd I III - SC 13G/A Passive Investment

SC 13G/A 1 v430438sc13ga.htm SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A (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)* STR Holdings, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 78478V209 (CUSIP Number) December

January 11, 2016 EX-24

POWER OF ATTORNEY

Exhibit 24 POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints each of Robert S.

December 2, 2015 EX-10.1

Position and Duties

Exhibit 10.1 December 1, 2015 Mr. Thomas D. Vitro, CMA 30 Raymond Circle Westfield, MA 01085 Dear Mr. Vitro: On behalf of STR Holdings, Inc., I am very pleased to present this offer of permanent, full-time employment to you, the terms of which follow. Parties This offer of employment is made by STR HOLDINGS, INC., a Delaware corporation (together with any successor thereto, the ?Company?), to THOM

December 2, 2015 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 25, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emp

December 2, 2015 EX-99.1

STR HOLDINGS, INC. ANNOUNCES APPOINTMENT OF NEW CHIEF FINANCIAL OFFICER

Exhibit 99.1 STR HOLDINGS, INC. ANNOUNCES APPOINTMENT OF NEW CHIEF FINANCIAL OFFICER Enfield, Conn. ? December 2, 2015 ? STR Holdings, Inc. (OTCQX: STRI) (the ?Company?) today announced that Thomas D. Vitro, CMA, has been appointed Vice President, Chief Financial Officer and Chief Accounting Officer, replacing Joseph Radziewicz, who tendered his resignation effective December 31, 2015 to pursue an

December 1, 2015 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): November 23, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emp

November 13, 2015 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2015 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001?34529 STR Holdings, Inc.

November 13, 2015 EX-99.1

STR HOLDINGS, INC. REPORTS THIRD QUARTER 2015 RESULTS

Exhibit 99.1 STR HOLDINGS, INC. REPORTS THIRD QUARTER 2015 RESULTS Enfield, Conn. ? November 13, 2015 ? STR Holdings, Inc. (OTCQX: STRI) today announced its financial results for the third quarter ended September 30, 2015. Advisory Note All prior year share amounts and per share amounts below have been adjusted to reflect the one-for-three reverse stock split effected January 30, 2015. Third Quart

November 13, 2015 8-K

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 13, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emp

October 26, 2015 EX-99.25

EX-99.25

NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES New York Stock Exchange LLC (?NYSE? or the 'Exchange') hereby notifies the Securities and Exchange Commission (the 'Commission') of its intention to remove the entire class of Common Stock of STR Holdings, Inc.

September 29, 2015 8-K

STR Holdings 8-K (Current Report/Significant Event)

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 29, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Em

September 29, 2015 EX-99.1

STR HOLDINGS TO BEGIN TRADING ON THE OTC PINK MARKETPLACE UNDER THE TICKER SYMBOL “STRI”

Exhibit 99.1 STR HOLDINGS TO BEGIN TRADING ON THE OTC PINK MARKETPLACE UNDER THE TICKER SYMBOL ?STRI? Enfield, Conn. ? September 29, 2015 ? On September 29, 2015, STR Holdings, Inc. (the ?Company?) was notified by the New York Stock Exchange (the ?NYSE?) that it was not in compliance with the continued listing standards set forth in Section 802.01B of the NYSE Listed Company Manual due to its fail

August 13, 2015 8-K

STR Holdings 8-K (Current Report/Significant Event)

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 13, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 13, 2015 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2015 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001—34529 STR Holdings, Inc.

August 13, 2015 EX-99.1

STR HOLDINGS, INC. REPORTS SECOND QUARTER 2015 RESULTS

EX-99.1 2 a15-175342ex99d1.htm EX-99.1 Exhibit 99.1 STR HOLDINGS, INC. REPORTS SECOND QUARTER 2015 RESULTS Enfield, Conn. — August 13, 2015 — STR Holdings, Inc. (NYSE: STRI) today announced its financial results for the second quarter ended June 30, 2015. Advisory Note All prior year share amounts and per share amounts below have been adjusted to reflect the one-for-three reverse stock split effec

August 12, 2015 EX-99.1

STR HOLDINGS RECEIVES NONCOMPLIANCE NOTICE FROM NYSE FOR $1.00 STOCK PRICE RULE

Exhibit 99.1 STR HOLDINGS RECEIVES NONCOMPLIANCE NOTICE FROM NYSE FOR $1.00 STOCK PRICE RULE Enfield, Conn. ? August 12, 2015 ? STR Holdings, Inc. (NYSE: STRI) (?STR? or the ?Company?) today announced that it received notice from the New York Stock Exchange (?NYSE?) that the Company has become non-compliant with a continued listing standard that requires its stock price to remain at or above $1.00

August 12, 2015 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 6, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employ

July 27, 2015 8-K

STR Holdings 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 24, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

July 27, 2015 EX-99.1

STR HOLDINGS, INC. REPORTS PLAN TO CLOSE ITS MALAYSIA FACILITY

Exhibit 99.1 STR HOLDINGS, INC. REPORTS PLAN TO CLOSE ITS MALAYSIA FACILITY Enfield, Conn. ? July 27, 2015 ? STR Holdings, Inc. (NYSE: STRI) today announced its decision to close its Malaysia facility. The Company plans to cease operations at its Malaysian encapsulant production facility, effective August 2, 2015, following a recent decision by the Company?s largest customer to exit its OEM module

July 27, 2015 EX-99.2

STR HOLDINGS, INC. REPORTS APPOINTMENT OF CORPORATE OFFICERS

Exhibit 99.2 STR HOLDINGS, INC. REPORTS APPOINTMENT OF CORPORATE OFFICERS Enfield, Conn. ? July 27, 2015 ? STR Holdings, Inc. (NYSE: STRI) today announced the appointment of the following executives to serve in new roles within the Company?s senior management team, effective August 1, 2015: ? Qu Chao, currently a Director of STR?s Board, has been appointed Vice President of Strategic Investment fo

May 13, 2015 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): May 13, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employer

May 12, 2015 8-K

STR Holdings 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 12, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employer

May 12, 2015 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2015 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001?34529 STR Holdings, Inc.

May 12, 2015 EX-99.1

STR HOLDINGS, INC. REPORTS FIRST QUARTER 2015 RESULTS

EX-99.1 2 a15-113851ex99d1.htm EX-99.1 Exhibit 99.1 STR HOLDINGS, INC. REPORTS FIRST QUARTER 2015 RESULTS Enfield, Conn. — May 12, 2015 — STR Holdings, Inc. (NYSE: STRI) today announced its financial results for the first quarter ended March 31, 2015. Advisory Note All prior year share amounts and per share amounts below have been adjusted to reflect the one-for-three reverse stock split effected

April 15, 2015 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): April 10, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employ

March 31, 2015 DEFA14A

STR Holdings DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

March 31, 2015 DEF 14A

STR Holdings DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14

March 26, 2015 EX-21

SUBSIDIARIES OF STR HOLDINGS, INC.

QuickLinks - Click here to rapidly navigate through this document Exhibit 21 SUBSIDIARIES OF STR HOLDINGS, INC.

March 26, 2015 EX-10.32

PhotoCap Supply agreement dated as of December 31, 2014, by and between Specialized Technology Resources Solar (Suzhou) Co., Ltd and Zhangjiagang Huhui Segpv Co., Ltd. (filed as Exhibit 10.32 to the Company’s Form 10-K filed on March 26, 2015 (file no. 001-34529) and incorporated herein by reference).

Exhibit 10.32

March 26, 2015 EX-99.1

STR HOLDINGS, INC. REPORTS FOURTH QUARTER and FULL-YEAR 2014 RESULTS

Exhibit 99.1 STR HOLDINGS, INC. REPORTS FOURTH QUARTER and FULL-YEAR 2014 RESULTS Enfield, Conn. ? March 26, 2015 ? STR Holdings, Inc. (NYSE: STRI) today announced its financial results for the fourth quarter and full-year ended December 31, 2014. Advisory Note All share amounts and per share amounts below have been adjusted to reflect the one-for-three reverse stock split effected January 30, 201

March 26, 2015 10-K

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

Use these links to rapidly review the document TABLE OF CONTENTS PART IV UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 26, 2015 8-K

STR Holdings 8-K (Current Report/Significant Event)

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 26, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employ

February 13, 2015 SC 13G/A

STRI / STR Holdings, Inc. / Jilot Dennis L. - SC 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Rule 13d-102) Under the Securities Exchange Act of 1934 INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.

February 11, 2015 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 rileysc13ga2-ex9901.htm JOINT FILING AGREEMENT Exhibit 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including additional amendments thereto) with respect to the shares of Common Stock, par value $0.01, o

February 11, 2015 SC 13G/A

STRI / STR Holdings, Inc. / B. Riley & Co., LLC - SC 13G/A 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) STR Holdings, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 78478V100 (CUSIP Number) Annual Amendment

February 9, 2015 SC 13G/A

STRI / STR Holdings, Inc. / B. Riley & Co., LLC - RILEY INVESTMENT MANAGEMENT, LLC 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) STR Holdings, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 78478V100 (CUSIP Number) Calendar Year 201

February 9, 2015 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 rileysc13ga1-ex9901.htm JOINT FILING AGREEMENT Exhibit 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including additional amendments thereto) with respect to the shares of Common Stock, par value $0.01, o

February 6, 2015 SC 13G/A

STRI / STR Holdings, Inc. / CREDIT SUISSE AG/ - NONE Passive Investment

SC 13G/A 1 doc1.htm NONE UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* STR Holdings, Inc. (Name of Issuer) Common Stock, $0.01 per share (Title of Class of Securities) 78478V100 (CUSIP Number) Calendar Year 2014 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to des

February 6, 2015 EX-99.1

In accordance with Securities and Exchange Commission Release No. 34-39538 (January 12, 1998), this Statement is being filed by Credit Suisse AG (the "Bank"), a Swiss bank, on behalf of its subsidiaries to the extent that they constitute the Investme

EX-99.1 2 schedule99-1.htm EX-99.1 In accordance with Securities and Exchange Commission Release No. 34-39538 (January 12, 1998), this Statement is being filed by Credit Suisse AG (the "Bank"), a Swiss bank, on behalf of its subsidiaries to the extent that they constitute the Investment Banking Division (the "Investment Banking Division") and the Alternative Investments business (the "AI Business"

February 5, 2015 SC 13G/A

STRI / STR Holdings, Inc. / Miller Lloyd I III - SC 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A (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* STR Holdings, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 78478V100 (CUSIP Number) December 31, 2014 (Date of Event which Requires

January 30, 2015 EX-3.1

Certificate of Amendment of Certificate of Incorporation. ((filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on January 30, 2015 (file no. 001-34529) and incorporated herein by reference).

Exhibit 3.1 CERTIFICATE OF AMENDMENT OF CERTIFICATE OF INCORPORATION OF STR HOLDINGS, INC. It is hereby certified that: FIRST: The name of the corporation is STR Holdings, Inc. (the “Corporation”). SECOND: Article Fourth, Section (a) of the Certificate of Incorporation of the Corporation is hereby amended by adding the following immediately following the first sentence of said section: “Effective

January 30, 2015 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): January 30, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

January 26, 2015 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, 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 23, 2015 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

January 26, 2015 EX-99.1

STR HOLDINGS RECEIVES NONCOMPLIANCE NOTICE FROM NYSE FOR $1.00 STOCK PRICE RULE BOARD DECLARES ONE-FOR-THREE REVERSE STOCK SPLIT Effective Date — January 30, 2015

Exhibit 99.1 STR HOLDINGS RECEIVES NONCOMPLIANCE NOTICE FROM NYSE FOR $1.00 STOCK PRICE RULE BOARD DECLARES ONE-FOR-THREE REVERSE STOCK SPLIT Effective Date — January 30, 2015 Enfield, Conn. — January 26, 2015 — STR Holdings, Inc. (NYSE: STRI) (“STR” or the “Company”) today announced that, as expected, it received notice from the New York Stock Exchange (“NYSE”) that the Company has become non-com

January 12, 2015 SC 13G/A

STRI / STR Holdings, Inc. / PRICE T ROWE ASSOCIATES INC /MD/ - STRI AS OF 12/31/2014 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4)* STR HOLDINGS INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 78478V100 (CUSIP Number) December 31, 2014 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which this Schedule is

December 18, 2014 SC 13D/A

STRI / STR Holdings, Inc. / Zhen Fa New Energy (U.S.) Co., Ltd. - FORM SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D/A (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.

December 18, 2014 EX-24.1

LIMITED POWER OF ATTORNEY FOR REPORTING OBLIGATIONS

EX-24.1 2 v396921ex24-1.htm EXHIBIT 24.1 Exhibit 24.1 LIMITED POWER OF ATTORNEY FOR REPORTING OBLIGATIONS Know all by these presents, that the undersigned hereby makes, constitutes and appoints each of Karen Dickinson, Yu Cai and Nanci Williams, each acting individually, as the undersigned’s true and lawful attorney-in-fact, with full power and authority as hereinafter described on behalf of and i

December 18, 2014 EX-24.2

LIMITED POWER OF ATTORNEY FOR REPORTING OBLIGATIONS

Exhibit 24.2 LIMITED POWER OF ATTORNEY FOR REPORTING OBLIGATIONS Know all by these presents, that the undersigned hereby makes, constitutes and appoints each of Karen Dickinson, Yu Cai and Nanci Williams, each acting individually, as the undersigned’s true and lawful attorney-in-fact, with full power and authority as hereinafter described on behalf of and in the name, place and stead of the unders

December 15, 2014 8-K

Changes in Control of Registrant, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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): December 15, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emp

December 15, 2014 EX-99.1

STR HOLDINGS ANNOUNCES NEW BOARD OF DIRECTOR COMPOSITION

Exhibit 99.1 STR HOLDINGS ANNOUNCES NEW BOARD OF DIRECTOR COMPOSITION Enfield, Conn. — December 15, 2014 — STR Holdings, Inc. (NYSE: STRI) (“STR” or the “Company”) today announced that in connection with the closing of the previously announced transactions with Zhenfa Energy Group Co., Ltd. (“Zhenfa”), the Company increased the size of its board of directors from five to seven members and appointe

December 15, 2014 EX-10.1

Registration Rights Agreement, dated as of December 15, 2014, by and between STR Holdings, Inc. and Zhen Fa New Energy (U.S.) Co., Ltd. (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on December 15, 2014 (file no. 001-34529) and incorporated herein by reference).

Exhibit 10.1 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made and entered into as of December 15, 2014, by and between STR Holdings, Inc., a Delaware corporation (the “Company”), and Zhen Fa New Energy (U.S.) Co., Ltd., a Nevada corporation (the “Stockholder”). Each of the Company and the Stockholder may be referred to in this Agreement as a “Party,” and,

December 15, 2014 EX-99.2

STR HOLDINGS CLOSES SALE OF CONTROLLING INTEREST TO ZHENFA ENERGY GROUP AND DECLARES SPECIAL DIVIDEND — Zhenfa Energy to Strengthen STR Position in China — — Special Cash Dividend of $0.85 per Share to be paid on 1/2/15 —

EX-99.2 4 a14-260261ex99d2.htm EX-99.2 Exhibit 99.2 STR HOLDINGS CLOSES SALE OF CONTROLLING INTEREST TO ZHENFA ENERGY GROUP AND DECLARES SPECIAL DIVIDEND — Zhenfa Energy to Strengthen STR Position in China — — Special Cash Dividend of $0.85 per Share to be paid on 1/2/15 — Enfield, Conn. — December 15, 2014 — STR Holdings, Inc. (NYSE: STRI) (“STR” or the “Company”) today announced that it sold app

December 2, 2014 CORRESP

STRI / STR Holdings, Inc. CORRESP - -

10 Water Street Enfield, CT 06082 December 2, 2014 Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

November 14, 2014 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): November 14, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emp

November 13, 2014 EX-99.1

STR HOLDINGS, INC. REPORTS THIRD QUARTER 2014 RESULTS

Exhibit 99.1 STR HOLDINGS, INC. REPORTS THIRD QUARTER 2014 RESULTS East Windsor, Conn. – November 13, 2014 – STR Holdings, Inc. (NYSE: STRI) today announced its financial results for the third quarter ended September 30, 2014. Third Quarter 2014 Summary: · Net sales of $9.5 million · Diluted GAAP loss per share from continuing operations of $(0.12) · Diluted non-GAAP loss per share from continuing

November 13, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2014 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

November 13, 2014 DEFA14A

STRI / STR Holdings, Inc. DEFA14A - - 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): November 13, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in its Charter) DELAWARE (State or Other Jurisdiction of Incorporation) 001-34529 (Commission File Number)

November 13, 2014 EX-10.3

LEASE BY AND BETWEEN SBS USA REALTY, LLC STR SOLAR (CONNECTICUT), LLC Dated as of October , 2014

Exhibit 10.3 LEASE BY AND BETWEEN SBS USA REALTY, LLC AND STR SOLAR (CONNECTICUT), LLC Dated as of October , 2014 TABLE OF CONTENTS 1. Demise - Premises - Term 1 2. Rent 1 3. Intentionally Omitted 2 4. Use 2 5. Signs 2 6. Quiet Enjoyment 2 7. Assignments and Subleases 3 8. No Nuisance; Compliance with Laws and Requirements of Public Authorities 3 9. Insurance 3 10. Alterations and Improvements 4 1

November 13, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, 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): November 13, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in its Charter) DELAWARE (State or Other Jurisdiction of Incorporation) 001-34529 (Commission File Number)

November 13, 2014 EX-99.1

STR HOLDINGS, INC. REPORTS THIRD QUARTER 2014 RESULTS

Exhibit 99.1 STR HOLDINGS, INC. REPORTS THIRD QUARTER 2014 RESULTS East Windsor, Conn. – November 13, 2014 – STR Holdings, Inc. (NYSE: STRI) today announced its financial results for the third quarter ended September 30, 2014. Third Quarter 2014 Summary: · Net sales of $9.5 million · Diluted GAAP loss per share from continuing operations of $(0.12) · Diluted non-GAAP loss per share from continuing

October 8, 2014 DEFM14A

STRI / STR Holdings, Inc. DEFM14A - - DEFM14A

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

October 2, 2014 EX-99.1

Solar Industry October 2014

Exhibit 99.1 Solar Industry October 2014 Safe Harbor Statement 1 This presentation contains forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995. These statements relate to future events or to future financial performance and involve known and unknown risks, uncertainties, and other factors that may cause our actual results, levels of

October 2, 2014 8-K

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): October 2, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

October 2, 2014 EX-99.1

Solar Industry October 2014

Exhibit 99.1 Solar Industry October 2014 Safe Harbor Statement 1 This presentation contains forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995. These statements relate to future events or to future financial performance and involve known and unknown risks, uncertainties, and other factors that may cause our actual results, levels of

October 2, 2014 DEFA14A

STRI / STR Holdings, Inc. DEFA14A - - 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): October 2, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

September 11, 2014 PREM14A

STRI / STR Holdings, Inc. PREM14A - - PREM14A

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 29, 2014 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the shares of Common Stock, par value $0.01, of STR Holdings, Inc. This Joint Filing Agreement shall be

August 29, 2014 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including additional amendments thereto) with respect to the shares of Common Stock, par value $0.01, of STR Holdings, Inc. This Joint Filing Agreement shall be

August 29, 2014 SC 13G

STRI / STR Holdings, Inc. / Riley Investment Management LLC - 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 STR Holdings, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 78478V100 (CUSIP Number) August 13, 2014 (

August 29, 2014 SC 13D/A

STRI / STR Holdings, Inc. / Riley Investment Management LLC - AMENDMENT NO. 1 TO THE SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a) (Amendment No. 1)1 STR Holdings, Inc. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 78478V100 (CUSIP Number) Bryant R. Riley RIL

August 21, 2014 EX-99.1

JOINT FILING AGREEMENT PURSUANT TO RULE 13D-1(k)(1)

Exhibit 99.1 JOINT FILING AGREEMENT PURSUANT TO RULE 13D-1(k)(1) In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common stock of STR Holdings, Inc. and further agree that this Joint Filing Agreement be inclu

August 21, 2014 SC 13D

STRI / STR Holdings, Inc. / Zhen Fa New Energy (U.S.) Co., Ltd. - SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.

August 15, 2014 DEFA14A

STRI / STR Holdings, Inc. DEFA14A - - 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): August 12, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 15, 2014 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 12, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 14, 2014 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 12, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 14, 2014 EX-99.1

1

Exhibit 99.1 THOMSON REUTERS STREETEVENTS EDITED TRANSCRIPT STRI - Q2 2014 STR Holdings Inc Earnings Call EVENT DATE/TIME: AUGUST 12, 2014 / 01:00PM GMT THOMSON REUTERS STREETEVENTS | www.streetevents.com | Contact Us © 2014 Thomson Reuters. All rights reserved. Republication or redistribution of Thomson Reuters content, including by framing or similar means, is prohibited without the prior writte

August 14, 2014 EX-99.1

1

Exhibit 99.1 THOMSON REUTERS STREETEVENTS EDITED TRANSCRIPT STRI - Q2 2014 STR Holdings Inc Earnings Call EVENT DATE/TIME: AUGUST 12, 2014 / 01:00PM GMT THOMSON REUTERS STREETEVENTS | www.streetevents.com | Contact Us © 2014 Thomson Reuters. All rights reserved. Republication or redistribution of Thomson Reuters content, including by framing or similar means, is prohibited without the prior writte

August 14, 2014 DEFA14A

STRI / STR Holdings, Inc. DEFA14A - - 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): August 12, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 12, 2014 EX-10.3

GUARANTEE AGREEMENT

Exhibit 10.3 GUARANTEE AGREEMENT This Guarantee Agreement, dated as of August 11, 2014 (this “Guarantee”), of 振发能源集团有限公司 (Zhenfa Energy Group Co., Ltd.), a Chinese limited liability company (License Number: 渝新 500903000056264) (the “Guarantor”), in favor of STR Holdings, Inc., a Delaware corporation (the “Guaranteed Party”) (each individually a “Party” and, collectively, the “Parties”). Reference

August 12, 2014 EX-99.1

STR HOLDINGS ANNOUNCES STRATEGIC RELATIONSHIP THE ZHENFA ENERGY GROUP ?Selling Controlling Interest to Leading Chinese Solar Power Developer? ?Transaction Values STR at $42.5 Million or $1.60 per Share? ?Proceeds to Fund Special Cash Dividend of $0.8

Exhibit 99.1 STR HOLDINGS ANNOUNCES STRATEGIC RELATIONSHIP WITH THE ZHENFA ENERGY GROUP ?Selling Controlling Interest to Leading Chinese Solar Power Developer? ?Transaction Values STR at $42.5 Million or $1.60 per Share? ?Proceeds to Fund Special Cash Dividend of $0.85 per Share? ?Relationship Expected to Accelerate Sales in China? East Windsor, Conn. ? August 12, 2014 ? STR Holdings, Inc. (NYSE:

August 12, 2014 EX-99.1

[STR Letterhead]

Exhibit 99.1 [STR Letterhead] August 12, 2014 To the STR global team: Today marks a strategic milestone in the history of our company. I am pleased to inform you that STR has signed a definitive agreement to enter into a strategic relationship with Zhenfa Energy Group Co. LTD. (“Zhenfa”), one of the largest vertically integrated downstream solar companies in China. Zhenfa, a privately held company

August 12, 2014 EX-99.1

STR HOLDINGS ANNOUNCES STRATEGIC RELATIONSHIP THE ZHENFA ENERGY GROUP —Selling Controlling Interest to Leading Chinese Solar Power Developer— —Transaction Values STR at $42.5 Million or $1.60 per Share— —Proceeds to Fund Special Cash Dividend of $0.8

EX-99.1 5 a14-187701ex99d1.htm EX-99.1 Exhibit 99.1 STR HOLDINGS ANNOUNCES STRATEGIC RELATIONSHIP WITH THE ZHENFA ENERGY GROUP —Selling Controlling Interest to Leading Chinese Solar Power Developer— —Transaction Values STR at $42.5 Million or $1.60 per Share— —Proceeds to Fund Special Cash Dividend of $0.85 per Share— —Relationship Expected to Accelerate Sales in China— East Windsor, Conn. — Augus

August 12, 2014 EX-99.1

[STR Letterhead]

Exhibit 99.1 [STR Letterhead] August 12, 2014 To the STR global team: Today marks a strategic milestone in the history of our company. I am pleased to inform you that STR has signed a definitive agreement to enter into a strategic relationship with Zhenfa Energy Group Co. LTD. (“Zhenfa”), one of the largest vertically integrated downstream solar companies in China. Zhenfa, a privately held company

August 12, 2014 EX-2.1

STOCK PURCHASE AGREEMENT and between STR HOLDINGS, INC. ZHEN FA NEW ENERGY (U.S.) CO., LTD. Dated as of August 11, 2014

Exhibit 2.1 STOCK PURCHASE AGREEMENT by and between STR HOLDINGS, INC. AND ZHEN FA NEW ENERGY (U.S.) CO., LTD. Dated as of August 11, 2014 TABLE OF CONTENTS Page ARTICLE I CERTAIN DEFINITIONS 2 ARTICLE II SALE AND PURCHASE 11 Section 2.1 Purchase and Sale of the Purchased Shares 11 Section 2.2 Deliveries upon Execution of This Agreement 11 Section 2.3 The Closing 12 Section 2.4 Deliveries At Closi

August 12, 2014 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 12, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 12, 2014 EX-2.1

Stock Purchase Agreement, dated August 11, 2014, by and between STR Holdings, Inc. and Zhen Fa New Energy (U.S.) Co., Ltd. (filed as Exhibit 2.1 to the Company’s Current Report on Form 8-K filed on August 12, 2014 (file no. 001-34529) and incorporated herein by reference).

EX-2.1 2 a14-187701ex2d1.htm EX-2.1 Exhibit 2.1 STOCK PURCHASE AGREEMENT by and between STR HOLDINGS, INC. AND ZHEN FA NEW ENERGY (U.S.) CO., LTD. Dated as of August 11, 2014 TABLE OF CONTENTS Page ARTICLE I CERTAIN DEFINITIONS 2 ARTICLE II SALE AND PURCHASE 11 Section 2.1 Purchase and Sale of the Purchased Shares 11 Section 2.2 Deliveries upon Execution of This Agreement 11 Section 2.3 The Closin

August 12, 2014 EX-99.1

STR HOLDINGS, INC. REPORTS SECOND QUARTER 2014 RESULTS -Third Consecutive Quarter of Sequential Sales Growth-

Exhibit 99.1 STR HOLDINGS, INC. REPORTS SECOND QUARTER 2014 RESULTS -Third Consecutive Quarter of Sequential Sales Growth- East Windsor, Conn. – August 12, 2014 – STR Holdings, Inc. (NYSE: STRI) today announced its financial results for the second quarter ended June 30, 2014. Second Quarter 2014 Summary: · Net sales of $11.2 million · Diluted GAAP loss per share from continuing operations of $(0.0

August 12, 2014 DEFA14A

STRI / STR Holdings, Inc. DEFA14A - - 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): August 12, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 12, 2014 DEFA14A

STRI / STR Holdings, Inc. DEFA14A - - 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 x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confide

August 12, 2014 DEFA14A

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 11, 2014 STR Holdings, Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 11, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in its Charter) DELAWARE (State or Other Jurisdiction of Incorporation) 001-34529 (Commission File Number) 27

August 12, 2014 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 12, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Emplo

August 12, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2014 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001?34529 STR Holdings, Inc.

August 12, 2014 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Other Events

8-K 1 a14-1877018k.htm 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): August 11, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in its Charter) DELAWARE (State or Other Jurisdiction of Incorporation) 001-34529

August 12, 2014 EX-10.1

Sales Service Agreement, dated as of August 11, 2014, by and between Specialized Technology Resources, Inc. and Zhenfa Energy Group Co., Ltd. (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on August 12, 2014 (file no. 001-34529) and incorporated herein by reference).

Exhibit 10.1 SALES SERVICE AGREEMENT This Sales Service Agreement (this “Agreement”) is made as of the 11th day of August, 2014, by and 振发能源集团有限公司 (Zhenfa Energy Group Co., Ltd.), a Chinese limited liability company (License Number: 渝新 500903000056264) (“Zhenfa”) and Specialized Technology Resources, Inc., a Delaware corporation (“STR”, and together with Zhenfa, the “Parties”, and each individuall

August 12, 2014 EX-10.1

SALES SERVICE AGREEMENT

Exhibit 10.1 SALES SERVICE AGREEMENT This Sales Service Agreement (this “Agreement”) is made as of the 11th day of August, 2014, by and 振发能源集团有限公司 (Zhenfa Energy Group Co., Ltd.), a Chinese limited liability company (License Number: 渝新 500903000056264) (“Zhenfa”) and Specialized Technology Resources, Inc., a Delaware corporation (“STR”, and together with Zhenfa, the “Parties”, and each individuall

August 12, 2014 EX-10.3

Guarantee Agreement, dated as of August 11, 2014, by and between STR Holdings, Inc. and Zhenfa Energy Group Co., Ltd. (filed as Exhibit 10.3 to the Company’s Current Report on Form 8-K filed on August 12, 2014 (file no. 001-34529) and incorporated herein by reference).

Exhibit 10.3 GUARANTEE AGREEMENT This Guarantee Agreement, dated as of August 11, 2014 (this “Guarantee”), of 振发能源集团有限公司 (Zhenfa Energy Group Co., Ltd.), a Chinese limited liability company (License Number: 渝新 500903000056264) (the “Guarantor”), in favor of STR Holdings, Inc., a Delaware corporation (the “Guaranteed Party”) (each individually a “Party” and, collectively, the “Parties”). Reference

July 11, 2014 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): July 7, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employer

July 11, 2014 EX-10.2

/s/ Robert S. Yorgensen

Exhibit 10.2 July 7, 2014 By Hand Joseph C. Radziewicz Re: Amendment of Retention Bonus Letter Agreement Dear Joe: As you know, we have provided you with an opportunity to earn a retention bonus pursuant to that certain letter agreement dated July 18, 2013 (the “Existing Letter Agreement”). Capitalized terms used herein shall have the meaning ascribed to such terms in the Existing Letter Agreement

July 11, 2014 EX-10.1

/s/ Robert S. Yorgensen

Exhibit 10.1 July 7, 2014 By Hand Alan N. Forman Re: Amendment of Retention Bonus Letter Agreement Dear Alan: As you know, we have provided you with an opportunity to earn a retention bonus pursuant to that certain letter agreement dated July 18, 2013 (the “Existing Letter Agreement”). Capitalized terms used herein shall have the meaning ascribed to such terms in the Existing Letter Agreement. As

May 19, 2014 8-K

Other Events, Submission of Matters to a Vote of Security Holders - 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 19, 2013 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employer

May 7, 2014 EX-10.1

CONTRACT MANUFACTURING AGREEMENT By and Among STR Solar (Hong Kong), Limited ZheJiang FeiYu Photo-Electrical Science & Technology Co., Ltd. Zhejiang Xiesheng Group Co., Ltd.

Exhibit 10.1 Contract Manufacturing Agreement Execution Version CONTRACT MANUFACTURING AGREEMENT By and Among STR Solar (Hong Kong), Limited ZheJiang FeiYu Photo-Electrical Science & Technology Co., Ltd. and Zhejiang Xiesheng Group Co., Ltd. 1 CONTENTS ARTICLE 1 DEFINITIONS 4 ARTICLE 2 LICENSE 6 2.1 LICENSE 6 2.2 NO SUBLICENSE 7 ARTICLE 3 SUPPLY OF TECHNICAL INFORMATION AND TOOLING 7 ARTICLE 4 TEC

May 7, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 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 7, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employer

May 7, 2014 EX-99.1

STR HOLDINGS, INC. REPORTS FIRST QUARTER 2014 RESULTS -Second Consecutive Quarter of Sequential Sales Growth-

Exhibit 99.1 STR HOLDINGS, INC. REPORTS FIRST QUARTER 2014 RESULTS -Second Consecutive Quarter of Sequential Sales Growth- East Windsor, Conn. – May 7, 2014 – STR Holdings, Inc. (NYSE: STRI) today announced its financial results for the first quarter ended March 31, 2014. First Quarter 2014 Financial Summary: · Net sales of $9.3 million · Diluted GAAP loss per share from continuing operations of $

May 7, 2014 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2014 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

May 1, 2014 SC 13G

STRI / STR Holdings, Inc. / AFRICK ANDREW Passive Investment

SC 13G 1 sc13g0994400204222014.htm 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 STR Holdings, Inc. (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securitie

April 17, 2014 SC 13G

STRI / STR Holdings, Inc. / Miller Lloyd I III - SC 13G Passive Investment

SC 13G 1 v375142sc13g.htm 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 RULE 13d-2(b) (Amendment No. )* STR Holdings, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 78478V100 (CUSIP Number) April 16, 2014 (

April 1, 2014 DEF 14A

- DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant o Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14

March 21, 2014 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): March 18, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employ

March 13, 2014 10-K

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

Use these links to rapidly review the document TABLE OF CONTENTS PART IV Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 13, 2014 EX-21

SUBSIDIARIES OF STR HOLDINGS, INC.

QuickLinks - Click here to rapidly navigate through this document Exhibit 21 SUBSIDIARIES OF STR HOLDINGS, INC.

March 11, 2014 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 ex991to13d0782400703112014.htm Exhibit 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the shares of Common Stock, par value $0.01, of STR Holdings,

March 11, 2014 SC 13D

STRI / STR Holdings, Inc. / Riley Investment Management LLC Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a) (Amendment No. )1 STR Holdings, Inc. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 78478V100 (CUSIP Number) Bryant R. Riley RILE

March 7, 2014 EX-99.(A)(5)(C)

STR ANNOUNCES FINAL RESULTS OF ITS TENDER OFFER

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(5)(C) For Immediate Release STR ANNOUNCES FINAL RESULTS OF ITS TENDER OFFER East Windsor, Conn.

March 7, 2014 8-K

Financial Statements and Exhibits, Other Events - 8-K

QuickLinks - Click here to rapidly navigate through this document UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 7, 2014 EX-99.1

STR ANNOUNCES FINAL RESULTS OF ITS TENDER OFFER

QuickLinks - Click here to rapidly navigate through this document Exhibit 99.1 For Immediate Release STR ANNOUNCES FINAL RESULTS OF ITS TENDER OFFER East Windsor, Conn., March 7, 2014 ... STR Holdings, Inc. (NYSE: STRI) (the "Company") today announced the final results of its modified "Dutch auction" tender offer (the "Offer"), which expired at 11:59 p.m. New York City time, on Monday, March 3, 20

March 7, 2014 SC TO-I/A

- SC TO-I/A

QuickLinks - Click here to rapidly navigate through this document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 4, 2014 SC TO-I/A

- SC TO-I/A

QuickLinks - Click here to rapidly navigate through this document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 4, 2014 EX-99.1

STR ANNOUNCES PRELIMINARY RESULTS OF ITS TENDER OFFER

QuickLinks - Click here to rapidly navigate through this document Exhibit 99.1 For Immediate Release STR ANNOUNCES PRELIMINARY RESULTS OF ITS TENDER OFFER East Windsor, Conn., March 4, 2014 ... STR Holdings, Inc. (NYSE: STRI) (the "Company") today announced the preliminary results of its modified "Dutch auction" tender offer (the "Offer"), which expired at 11:59 p.m. New York City time, on Monday,

March 4, 2014 8-K

Financial Statements and Exhibits, Other Events - 8-K

QuickLinks - Click here to rapidly navigate through this document UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 4, 2014 EX-99.(A)(5)(B)

STR ANNOUNCES PRELIMINARY RESULTS OF ITS TENDER OFFER

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(5)(B) For Immediate Release STR ANNOUNCES PRELIMINARY RESULTS OF ITS TENDER OFFER East Windsor, Conn.

February 18, 2014 EX-99.(A)(1)(G)

Amended Offer to Purchase for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.54 Per Share Nor Less Than $1.35 Per Share

Use these links to rapidly review the document TABLE OF CONTENTS Exhibit (a)(1)(G) Amended Offer to Purchase for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.

February 18, 2014 8-K

Financial Statements and Exhibits, Other Events - 8-K

QuickLinks - Click here to rapidly navigate through this document UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

February 18, 2014 EX-99.(A)(1)(I)

NOTICE OF GUARANTEED DELIVERY (Not to be used for Signature Guarantee) for Tender of Shares of Common Stock of STR Holdings, Inc. Pursuant to its Amended Offer to Purchase for Cash Dated February 18, 2014 Up to $30,000,000 in Value of Shares At a Pur

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(I) NOTICE OF GUARANTEED DELIVERY (Not to be used for Signature Guarantee) for Tender of Shares of Common Stock of STR Holdings, Inc.

February 18, 2014 EX-99.1

STR AMENDS AND EXTENDS DUTCH AUCTION TENDER OFFER

QuickLinks - Click here to rapidly navigate through this document Exhibit 99.1 For Immediate Release STR AMENDS AND EXTENDS DUTCH AUCTION TENDER OFFER East Windsor, Conn., February 18, 2014 ... STR Holdings, Inc. (NYSE: STRI) (the "Company") today announced that it has increased the minimum tender price in its modified "Dutch auction" tender offer (the "Offer") to purchase up to $30,000,000 of sha

February 18, 2014 EX-99.(A)(5)(A)

STR AMENDS AND EXTENDS DUTCH AUCTION TENDER OFFER

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(5)(A) For Immediate Release STR AMENDS AND EXTENDS DUTCH AUCTION TENDER OFFER East Windsor, Conn.

February 18, 2014 EX-99.(A)(1)(J)

Offer to Purchase by STR Holdings, Inc. for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.54 Per Share Nor Less Than $1.35 Per Share

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(J) Offer to Purchase by STR Holdings, Inc.

February 18, 2014 EX-99.(A)(1)(K)

Offer to Purchase by STR Holdings, Inc. for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.54 Per Share Nor Less Than $1.35 Per Share

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(K) Offer to Purchase by STR Holdings, Inc.

February 18, 2014 EX-99.(A)(1)(H)

STR HOLDINGS, INC. LETTER OF TRANSMITTAL

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(H) STR HOLDINGS, INC.

February 18, 2014 SC TO-I/A

- SC TO-I/A

SC TO-I/A 1 a2218328zscto-ia.htm SC TO-I/A QuickLinks - Click here to rapidly navigate through this document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO Amendment No. 1 TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) or 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 STR HOLDINGS, INC. (Name of Subject Company (Issuer) and Filing Person (Offeror)) Common Stock

February 12, 2014 SC 13G/A

STRI / STR Holdings, Inc. / Jilot Dennis L. - AMENDMENT NO. 4 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

February 12, 2014 CORRESP

-

767 Fifth Avenue New York, NY 10153-0119 +1 212 310 8000 tel +1 212 310 8007 fax February 12, 2014 VIA EDGAR TRANSMISSION U.

February 11, 2014 SC 13G/A

STRI / STR Holdings, Inc. / PRICE T ROWE ASSOCIATES INC /MD/ - STRI AS OF 12/31/2013 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* STR HOLDINGS INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 78478V100 (CUSIP Number) December 31, 2013 (Date of Event which Requires Filing of Statement) Check the appropriate box to designate the Rule pursuant to which this Schedule is

February 7, 2014 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including additional amendments thereto) with respect to the shares of Common Stock, par value $0.01, of STR Holdings, Inc. This Joint Filing Agreement shall be

February 7, 2014 SC 13G

STRI / STR Holdings, Inc. / Riley Investment Management LLC 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 STR Holdings, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 78478V100 (CUSIP Number) January 31, 2014

January 31, 2014 8-K

Financial Statements and Exhibits, Other Events - 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 31, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

January 31, 2014 EX-99.(A)(1)(E)

Offer to Purchase by STR Holdings, Inc. for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.54 Per Share Nor Less Than $1.00 Per Share

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(E) Offer to Purchase by STR Holdings, Inc.

January 31, 2014 EX-99.(A)(5)

STR ANNOUNCES COMMENCEMENT OF TENDER OFFER TO PURCHASE UP TO $30 MILLION OF ITS COMMON STOCK

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(5) For Immediate Release STR ANNOUNCES COMMENCEMENT OF TENDER OFFER TO PURCHASE UP TO $30 MILLION OF ITS COMMON STOCK East Windsor, Conn.

January 31, 2014 SC TO-I

- SC TO-I

QuickLinks - Click here to rapidly navigate through this document UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

January 31, 2014 EX-99.1

STR ANNOUNCES COMMENCEMENT OF TENDER OFFER TO PURCHASE UP TO $30 MILLION OF ITS COMMON STOCK

Exhibit 99.1 For Immediate Release STR ANNOUNCES COMMENCEMENT OF TENDER OFFER TO PURCHASE UP TO $30 MILLION OF ITS COMMON STOCK East Windsor, Conn., January 31, 2014 ... STR Holdings, Inc. (NYSE: STRI) (the “Company”) today announced that it is commencing a “modified Dutch auction” self-tender offer to repurchase for cash up to $30 million of shares of its common stock at a price per share no grea

January 31, 2014 EX-99.(A)(1)(D)

Offer to Purchase by STR Holdings, Inc. for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.54 Per Share Nor Less Than $1.00 Per Share

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(D) Offer to Purchase by STR Holdings, Inc.

January 31, 2014 EX-99.1

STR Holdings Announces Preliminary Fourth Quarter 2013 Results Reports First Sequential Quarterly Sales Increase in Nine Quarters

Exhibit 99.1 STR Holdings Announces Preliminary Fourth Quarter 2013 Results Reports First Sequential Quarterly Sales Increase in Nine Quarters EAST WINDSOR, Conn., Jan. 30, 2014 (GLOBE NEWSWIRE) — STR Holdings, Inc. (NYSE:STRI) today announced that it expects to record revenue of approximately $6.5 to $6.7 million for the fourth quarter of 2013, which would be its first sequential quarterly sales

January 31, 2014 EX-99.(A)(1)(A)

Offer to Purchase for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.54 Per Share Nor Less Than $1.00 Per Share

Use these links to rapidly review the document TABLE OF CONTENTS Exhibit (a)(1)(A) Offer to Purchase for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.

January 31, 2014 EX-99.(A)(1)(B)

STR HOLDINGS, INC. LETTER OF TRANSMITTAL

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(B) STR HOLDINGS, INC.

January 31, 2014 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): January 30, 2014 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

January 31, 2014 EX-99.(A)(1)(C)

NOTICE OF GUARANTEED DELIVERY (Not to be used for Signature Guarantee) for Tender of Shares of Common Stock of STR Holdings, Inc. Pursuant to its Offer to Purchase for Cash Dated January 31, 2014 Up to $30,000,000 in Value of Shares At a Purchase Pri

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(C) NOTICE OF GUARANTEED DELIVERY (Not to be used for Signature Guarantee) for Tender of Shares of Common Stock of STR Holdings, Inc.

January 31, 2014 EX-99.(A)(1)(F)

Notice of Offer to Purchase by STR Holdings, Inc. for Cash Shares of Its Common Stock for an Aggregate Purchase Price of Not More Than $30,000,000 at a Per Share Purchase Price Not Greater Than $1.54 Per Share Nor Less Than $1.00 Per Share

QuickLinks - Click here to rapidly navigate through this document Exhibit (a)(1)(F) This announcement is neither an offer to purchase nor a solicitation of an offer to sell Shares (as defined below).

January 24, 2014 SC 13D/A

STRI / STR Holdings, Inc. / RED MOUNTAIN CAPITAL PARTNERS LLC - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 10)* STR HOLDINGS, INC. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 78478V100 (CUSIP Number) Red Mountain Capital Partners LLC Attn: Willem Mesdag 10100 Santa Monica Boulevard, Suite 925 Los Angeles, Cal

January 17, 2014 8-K

Entry into a Material Definitive Agreement

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 13, 2014 STR Holdings, Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-34529 (Commissio

December 23, 2013 SC 13D/A

STRI / STR Holdings, Inc. / RED MOUNTAIN CAPITAL PARTNERS LLC - AMENDMENT #9 TO SCHEDULE 13D Activist Investment

SC 13D/A 1 d648923dsc13da.htm AMENDMENT #9 TO SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 9)* STR HOLDINGS, INC. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 78478V100 (CUSIP Number) Red Mountain Capital Partners LLC Attn: Willem Mesdag 10100 S

December 17, 2013 SC 13D/A

STRI / STR Holdings, Inc. / RED MOUNTAIN CAPITAL PARTNERS LLC - SCHEDULE 13D AMENDMENT NO.8 Activist Investment

Schedule 13D Amendment No.8 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 8)* STR HOLDINGS, INC. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 78478V100 (CUSIP Number) Red Mountain Capital Partners LLC Attn: Willem Mesdag 10100 Santa Monica Boulevard, Suite 92

December 17, 2013 EX-99.7

JOINT FILING AGREEMENT

Exhibit 7 Exhibit 7 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a Schedule 13D (including any and all amendments thereto) with respect to the common stock, par value $0.

November 12, 2013 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2013 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

October 16, 2013 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): October 15, 2013 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Empl

August 8, 2013 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2013 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

August 7, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 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): August 7, 2013 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employ

August 7, 2013 EX-99.1

STR HOLDINGS, INC. REPORTS SECOND QUARTER 2013 RESULTS

Exhibit 99.1 STR HOLDINGS, INC. REPORTS SECOND QUARTER 2013 RESULTS ENFIELD, Conn. — August 7, 2013 — STR Holdings, Inc. (NYSE: STRI) today announced its financial results for the second quarter ended June 30, 2013. Second Quarter 2013 Financial Summary: · Net sales of $7.8 million · Diluted GAAP loss per share from continuing operations of $(0.11); Diluted non-GAAP loss per share from continuing

July 31, 2013 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): July 31, 2013 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employe

July 31, 2013 EX-99.1

STR Holdings Announces Preliminary Second Quarter 2013 Results

Exhibit 99.1 STR Holdings Announces Preliminary Second Quarter 2013 Results ENFIELD, Conn. — July 31, 2013 — STR Holdings, Inc. (NYSE:STRI) today announced that it expects to record diluted non-GAAP loss per share of $(0.09) and net sales of approximately $7.7 million for the second quarter of 2013 compared to $11.2 million in the first quarter of 2013. Excluding sales to First Solar, the Company’

July 23, 2013 EX-10.1

Defined Terms

Exhibit 10.1 July 18, 2013 By Hand Robert S. Yorgensen Re: Retention Bonus Dear Bob: As you know, we have been working closely with our financial advisors, board of directors and senior leadership for several months now to identify and evaluate strategic alternatives for STR in the midst of extraordinary circumstances. While we remain hopeful that this effort will yield an exciting opportunity, we

July 23, 2013 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

8-K 1 a13-1688018k.htm 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): July 18, 2013 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commissio

July 23, 2013 EX-10.4

Defined Terms

EX-10.4 5 a13-168801ex10d4.htm EX-10.4 Exhibit 10.4 July 18, 2013 By Hand Joseph C. Radziewicz Re: Retention Bonus Dear Joe: As you know, I have been working closely with our financial advisors, board of directors and senior leadership for several months now to identify and evaluate strategic alternatives for STR in the midst of extraordinary circumstances. While I remain hopeful that this effort

July 23, 2013 EX-10.3

Defined Terms

Exhibit 10.3 July 18, 2013 By Hand Alan N. Forman Re: Retention Bonus Dear Alan: As you know, I have been working closely with our financial advisors, board of directors and senior leadership for several months now to identify and evaluate strategic alternatives for STR in the midst of extraordinary circumstances. While I remain hopeful that this effort will yield an exciting opportunity, I am cog

July 23, 2013 EX-10.2

Defined Terms

Exhibit 10.2 July 18, 2013 By Hand Barry A. Morris Re: Retention Bonus Dear Barry: As you know, I have been working closely with our financial advisors, board of directors and senior leadership for several months now to identify and evaluate strategic alternatives for STR in the midst of extraordinary circumstances. While I remain hopeful that this effort will yield an exciting opportunity, I am c

May 16, 2013 8-K

Submission of Matters to a Vote of Security Holders - 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 14, 2013 STR Holdings, Inc. (Exact Name of Registrant as Specified in Charter) Delaware 001-34529 27-1023344 (State or Other Jurisdiction of (Commission File Number) (IRS Employer

May 2, 2013 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2013 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001–34529 STR Holdings, Inc.

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