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HARVARD BIOSCIENCE INC

For the period ended Sep 30, 2026. Filed Nov 10, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 10, 2026

HBIO$9.26+1.9%Stored close · as of Nov 10, 2026

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Item 6. Exhibits

Item 6.Exhibits.
3.1Second Amended and Restated Certificate of Incorporation of Harvard Bioscience, Inc. (previously filed as an exhibit to the Company’s Registration Statement on Form S-1/A (File No. 333-45996) (filed November 9, 2000) and incorporated by reference thereto).
3.2Certificate of Amendment to Second Amended and Restated Certificate of Incorporation of Harvard Bioscience, Inc. (previously filed as an exhibit to the Company’s Current Report on Form 8-K (filed March 6, 2026) and incorporated by reference thereto).
3.3Amended and Restated By-laws of Harvard Bioscience, Inc. (previously filed as an exhibit to the Company’s Registration Statement on Form S-1/A (File No. 333-45996) (filed November 9, 2000) and incorporated by reference thereto).
3.4Amendment No. 1 to Amended and Restated Bylaws of Harvard Bioscience, Inc. (as adopted October 30, 2007) (previously filed as an exhibit to the Company’s Current Report on Form 8-K (filed November 1, 2007) and incorporated by reference thereto).
3.5Amendment No. 2 to Amended and Restated Bylaws of Harvard Bioscience, Inc. (as adopted January 19, 2026) (previously filed as an exhibit to the Company’s Current Report on Form 8-K (filed January 20, 2026) and incorporated by reference thereto).
10.1Harvard Bioscience, Inc. Amended and Restated 2021 Incentive Plan. (previously filed as Annex B to the Proxy Statement on Schedule 14A filed April 21, 2026, and incorporated by reference thereto.)
10.2Harvard Bioscience, Inc. Employee Stock Purchase Plan, as amended (previously filed as an exhibit to the Company’s Current Report on Form 8-K (filed June 2, 2026) and incorporated by reference thereto).
31.1Certification of Chief Financial Officer of Harvard Bioscience, Inc., pursuant to Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2Certification of Chief Executive Officer of Harvard Bioscience, Inc., pursuant to Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*Certification of Chief Financial Officer of Harvard Bioscience, Inc., pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*Certification of Chief Executive Officer of Harvard Bioscience, Inc., pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS 101.SCHInline XBRL Instance Document Inline XBRL Taxonomy Extension Schema Document
101.CALInline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEFInline XBRL Taxonomy Extension Definition Linkbase Document
101.LABInline XBRL Taxonomy Extension Labels Linkbase Document
101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document
104Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)
*This certification shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liability of that section, nor shall it be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934

**SIGNATURES

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