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Harvard Bioscience (HBIO) 10K Form and Latest SEC Filings 2026

Harvard Bioscience logo
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Latest Harvard Bioscience SEC Filings & Recent Activity

Harvard Bioscience (NASDAQ:HBIO) has submitted 348+ documents to the U.S. Securities and Exchange Commission (SEC) since 2018. For investors, these filings are the primary source of verified financial data — covering everything from annual revenue and debt levels in the 10-K, to material business events in 8-K current reports, to insider buying and selling activity in Form 4 disclosures. The most recent filing was a Form SCHEDULE 13G/A submitted on May 14, 2026.

Form 4
HARVARD BIOSCIENCE INC Reports Ownership Change on Apr. 1, 2026

Form 4 filings disclose changes in stock ownership by company insiders, including purchases, sales, grants, and option exercises.

View insider ownership

8-K
Harvard Bioscience Files Current Report on May. 12, 2026

An 8-K is filed when a material corporate event occurs, such as an acquisition, leadership change, or financial update.

View filing

10-Q
Harvard Bioscience Files Quarterly Report on May. 12, 2026

The 10-Q contains Harvard Bioscience's unaudited quarterly financial statements, revenue, earnings updates, and cash flow changes between annual reports.

View earnings history

Harvard Bioscience SEC Filing History

Browse Harvard Bioscience's complete SEC filing history using the filters below. Filter by form type - 10-K, 10-Q, 8-K, Form 4, and more - or set a custom date range to find a filing.

DateFilerForm TypeView
05/14/2026 12:08 PM
Harvard Bioscience (1123494) Subject
Leviticus Partners LP (1019432) Filed by
Form SCHEDULE 13G/A
05/12/2026 3:30 PM
Harvard Bioscience (1123494) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
05/12/2026 6:30 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
05/12/2026 6:30 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/21/2026 3:56 PM
Harvard Bioscience (1123494) Filer
Form DEF 14A
04/21/2026 3:58 PM
Harvard Bioscience (1123494) Filer
Form DEFA14A
04/01/2026 8:57 AM
Frost Mark T (1310262) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
04/01/2026 8:44 AM
Frost Mark T (1310262) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/23/2026 8:48 AM
Duke John D (2071593) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/23/2026 7:00 AM
Harvard Bioscience (1123494) Subject
Snider William (1340831) Filed by
Form SCHEDULE 13D
03/18/2026 1:13 PM
DENELSKY STEPHEN J (1204320) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/18/2026 6:31 AM
Harvard Bioscience (1123494) Issuer
Snider William (1340831) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
03/17/2026 4:56 PM
Duke John D (2071593) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/17/2026 6:30 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/13/2026 7:20 AM
Harvard Bioscience (1123494) Filer
Form 10-K
Annual report pursuant to Section 13 or 15(d)  
03/12/2026 6:30 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/10/2026 6:30 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
02/12/2026 10:27 AM
Harvard Bioscience (1123494) Subject
Leviticus Partners LP (1019432) Filed by
Form SCHEDULE 13G/A
02/10/2026 6:30 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
02/09/2026 11:15 PM
Harvard Bioscience (1123494) Filer
Form EFFECT
01/30/2026 4:15 PM
Harvard Bioscience (1123494) Filer
Form DEF 14A
01/20/2026 4:04 PM
Harvard Bioscience (1123494) Filer
Form PRE 14A
01/20/2026 3:01 PM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/12/2026 6:30 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/30/2025 7:46 PM
Harvard Bioscience (1123494) Issuer
Snider William (1340831) Reporting
Form 3
Initial statement of beneficial ownership of securities  
12/30/2025 7:48 PM
Harvard Bioscience (1123494) Issuer
Snider William (1340831) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
12/17/2025 6:30 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/05/2025 3:30 PM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
11/06/2025 3:31 PM
Harvard Bioscience (1123494) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
11/06/2025 6:00 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
11/03/2025 8:57 AM
Harvard Bioscience (1123494) Subject
Leviticus Partners LP (1019432) Filed by
Form SCHEDULE 13G/A
10/07/2025 12:26 PM
DENELSKY STEPHEN J (1204320) Reporting
Harvard Bioscience (1123494) Issuer
Form 3
Initial statement of beneficial ownership of securities  
10/07/2025 12:28 PM
DENELSKY STEPHEN J (1204320) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
10/03/2025 7:01 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/09/2025 6:00 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/19/2025 1:39 PM
Green James W (1400121) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
08/13/2025 3:30 PM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/11/2025 8:09 PM
Duke John D (2071593) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
08/11/2025 3:30 PM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/11/2025 3:30 PM
Harvard Bioscience (1123494) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
08/11/2025 6:01 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
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08/07/2025 9:00 AM
Harvard Bioscience (1123494) Subject
Leviticus Partners LP (1019432) Filed by
Form SCHEDULE 13G/A
07/25/2025 8:37 PM
Benson Seth Benjamin (2078549) Reporting
Harvard Bioscience (1123494) Issuer
Form 3
Initial statement of beneficial ownership of securities  
07/25/2025 8:38 PM
Benson Seth Benjamin (2078549) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/18/2025 3:33 PM
Eade Katherine A. (1721318) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/18/2025 3:31 PM
Gagnon Robert E. (1504983) Reporting
Harvard Bioscience (1123494) Issuer
Form 3
Initial statement of beneficial ownership of securities  
07/18/2025 3:32 PM
Gagnon Robert E. (1504983) Reporting
Harvard Bioscience (1123494) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/17/2025 7:12 PM
BlackRock, Inc. (2012383) Filed by
Harvard Bioscience (1123494) Subject
Form SCHEDULE 13G/A
07/17/2025 6:01 AM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
06/27/2025 3:45 PM
Harvard Bioscience (1123494) Filer
Form 8-K/A
06/23/2025 3:46 PM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
06/13/2025 3:45 PM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
06/09/2025 8:08 PM
Duke John D (2071593) Reporting
Harvard Bioscience (1123494) Issuer
Form 3
Initial statement of beneficial ownership of securities  
06/02/2025 4:00 PM
Harvard Bioscience (1123494) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
05/30/2025 10:50 AM
Harvard Bioscience (1123494) Subject
Leviticus Partners LP (1019432) Filed by
Form SCHEDULE 13G/A
05/27/2025 3:36 PM
Harvard Bioscience (1123494) Filer
Form SD
Specialized Disclosure Report  
(Data available from 1/1/2016 forward)

Harvard Bioscience SEC Filings - Frequently Asked Questions

Harvard Bioscience (HBIO) has submitted 348+ filings to the SEC since 2018. You can browse the complete history or filter by form type using the tools above.

Harvard Bioscience's fiscal year ends on December 31. The company typically files its 10-K annual report by the end of February, covering the prior fiscal year's financial results.

The most recent filing was a Form SCHEDULE 13G/A submitted on May 14, 2026. View the full filing using the link above.

SEC Filing Types: 10-K, 10-Q, 8-K and More

SEC filings are legally required disclosures that public companies submit to the U.S. Securities and Exchange Commission. Unlike press releases or earnings call transcripts, these documents are filed under legal obligation — meaning the financial data they contain is audited, standardized, and subject to penalties if materially false. For investors, that makes SEC filings the most reliable primary source available for evaluating a company's true financial position.

Yes. All SEC filings are publicly available through the SEC's EDGAR database and on financial research platforms like MarketBeat. Companies are required by law to make these disclosures accessible to all investors — meaning retail investors have access to the same source documents as institutional analysts.

A 10-K is an annual report containing audited financial statements and a full review of the company's business — it is the most comprehensive filing a company makes each year. A 10-Q is a shorter, unaudited quarterly update filed three times per year between annual reports. Investors typically use the 10-K for deep fundamental analysis and the 10-Q to track whether the company is on pace with its guidance mid-year.

The most important filing for fundamental investors. Filed once per year, the 10-K contains audited financial statements, revenue and earnings trends, debt obligations, risk factors, and management's own assessment of the business. Reading the risk factors section and comparing year-over-year financials can reveal issues that don't show up in analyst summaries.

An unaudited financial update filed three times per year (the 10-K covers Q4). Investors use 10-Qs to track whether guidance is on pace, monitor changes in cash flow or inventory, and catch any mid-year shifts in business conditions before they become headline news.

Filed within four business days of a material event — earnings releases, merger announcements, executive departures, or major asset sales. Because 8-Ks are filed before media coverage catches up, they are often the fastest way to get unfiltered information directly from the company on market-moving events.

Filed within two business days whenever an executive or director buys or sells company stock. Insider purchases — especially large or clustered buys — are often interpreted as a signal of management confidence. Insider selling is more ambiguous but worth monitoring for patterns, particularly around lock-up expirations or ahead of major announcements.


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This page (NASDAQ:HBIO) was last updated on 5/20/2026 by MarketBeat.com Staff.
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