How many institutions held HBIO - HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share in Q3 2025?

57 institutional investors reported HBIO - HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share for Q3 2025. Use the holders table for investor-level position and value details.

HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (HBIO)

Q: What does CUSIP 416906105 represent in this 13F holders report?

CUSIP 416906105 is the security identifier for HBIO - HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share used to aggregate holder disclosures.

CUSIP: 416906105

Q3 2025 13F Holders as of 30 Sep 2025

Type / Class: Equity / Common Stock, par value $0.01 per share
Shares outstanding: 5,297,433
Total 13F shares: 16,625,345
Share change: -2,284,113
Total reported value: $7,288,735
Put/Call ratio: 0%
Price per share: $0.44
Number of holders: 57
Value change: -$1,003,804
Number of buys: 14
Number of sells: 39

Quarterly Holders Quick Answers

What is CUSIP 416906105?
CUSIP 416906105 identifies HBIO - HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share in SEC institutional holdings data.

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Back to full security ownership history for the broader multi-quarter picture.
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Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q4 2025
Previous quarter: Q2 2025

Recent filing periods for CUSIP 416906105:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of HBIO - HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Bertrand Loy	3/4/5	Director	— class O/S missing	556,208	$2,286,015	—	21 May 2024	3/4/5
AMH Equity Ltd	13F	Company	66%	3,508,703	$1,557,162	—	30 Jun 2025	13F
Michael A. Rossi	3/4/5	Chief Financial Officer	— class O/S missing	260,540	$1,393,889	—	29 Dec 2022	3/4/5
James W. Green	3/4/5	Director	46%	2,452,566	$1,226,283	—	15 Aug 2025	3/4/5
WEBER CAPITAL MANAGEMENT LLC /ADV	13D/G	Weber Capital Management, LLC	7.3%	3,200,380	$1,216,144	+$259,711	31 Mar 2025	13D/G
Thomas W. Loewald	3/4/5	Director	— class O/S missing	295,311	$1,213,728	—	21 May 2024	3/4/5
Alan I. Edrick	3/4/5	Director	— class O/S missing	273,911	$1,125,774	—	21 May 2024	3/4/5
Harvey Partners, LLC	13F 13D/G	Company	5% from 13D/G	2,141,099	$950,220	—	30 Jun 2025	13F 13D/G
Kenneth Fletcher Olson	3/4/5	Chief Operating Officer	— class O/S missing	155,595	$832,433	—	29 Dec 2021	3/4/5
VANGUARD GROUP INC	13F	Company	35%	1,853,891	$823,127	—	30 Jun 2025	13F
Granahan Investment Management, LLC	13F	Company	28%	1,501,508	$666,369	—	30 Jun 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	21%	1,126,250	$499,888	—	30 Jun 2025	13F
BlackRock, Inc.	13F 13D/G	Company	2.5% from 13D/G	1,114,575	$494,648	—	30 Jun 2025	13F 13D/G
ACADIAN ASSET MANAGEMENT LLC	13F	Company	20%	1,039,225	$459,000	—	30 Jun 2025	13F
Meros Investment Management, LP	13F	Company	17%	919,945	$408,288	—	30 Jun 2025	13F
UBS Group AG	13F	Company	15%	792,206	$351,740	—	30 Jun 2025	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	15%	791,978	$351,480	—	30 Jun 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	12%	639,867	$283,973	—	30 Jun 2025	13F
Acuitas Investments, LLC	13F	Company	9.3%	491,092	$217,947	—	30 Jun 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	8.3%	440,022	$195,327	—	30 Jun 2025	13F
Katherine A. Eade	3/4/5	Director	7.9%	421,126	$186,895	—	16 Jul 2025	3/4/5
Jennifer Cote	3/4/5	Chief Financial Officer	— class O/S missing	159,019	$109,500	—	19 Mar 2025	3/4/5
Pasadena Private Wealth, LLC	13F	Company	4.6%	243,911	$108,248	—	30 Jun 2025	13F
GOLDMAN SACHS GROUP INC	13F	Company	3.9%	207,646	$92,153	—	30 Jun 2025	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	3.7%	197,785	$87,777	—	30 Jun 2025	13F
NORTHERN TRUST CORP	13F	Company	3.6%	188,869	$83,820	—	30 Jun 2025	13F
RBF Capital, LLC	13F	Company	3%	160,000	$71,008	—	30 Jun 2025	13F
STATE STREET CORP	13F	Company	2.8%	149,352	$66,282	—	30 Jun 2025	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	2.7%	140,464	$62,338	—	30 Jun 2025	13F
MARSHALL WACE, LLP	13F	Company	2.6%	138,700	$61,028	—	30 Jun 2025	13F
Bank of New York Mellon Corp	13F	Company	2.4%	126,223	$56,018	—	30 Jun 2025	13F
Robert E. Gagnon	3/4/5	Director	2.1%	110,000	$48,818	—	16 Jul 2025	3/4/5
Seth Benjamin Benson	3/4/5	Director	2.1%	110,000	$48,818	—	16 Jul 2025	3/4/5
Williams & Novak, LLC	13F	Company	2%	106,570	$47,296	—	30 Jun 2025	13F
GAMCO INVESTORS, INC. ET AL	13F	Company	1.5%	77,000	$34,173	—	30 Jun 2025	13F
FMR LLC	13F	Company	1.4%	72,274	$32,075	—	30 Jun 2025	13F
JANE STREET GROUP, LLC	13F	Company	1.3%	70,736	$31,393	—	30 Jun 2025	13F
Qube Research & Technologies Ltd	13F	Company	0.97%	51,195	$22,720	—	30 Jun 2025	13F
GABELLI FUNDS LLC	13F	Company	0.94%	50,000	$22,190	—	30 Jun 2025	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.88%	46,851	$20,792	—	30 Jun 2025	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	0.86%	45,706	$20,285	—	30 Jun 2025	13F
HRT FINANCIAL LP	13F	Company	0.78%	41,464	$18,000	—	30 Jun 2025	13F
Abel Hall, LLC	13F	Company	0.7%	37,334	$16,569	—	30 Jun 2025	13F
Assenagon Asset Management S.A.	13F	Company	0.69%	36,801	$16,332	—	30 Jun 2025	13F
Callan Family Office, LLC	13F	Company	0.56%	29,844	$13,245	—	30 Jun 2025	13F
MORGAN STANLEY	13F	Company	0.56%	29,556	$13,117	—	30 Jun 2025	13F
GREENWOOD CAPITAL ASSOCIATES LLC	13F	Company	0.52%	27,754	$12,323	—	30 Jun 2025	13F
Point72 Asia (Singapore) Pte. Ltd.	13F	Company	0.51%	27,238	$12,088	—	30 Jun 2025	13F
Virtu Financial LLC	13F	Company	0.5%	26,544	$12,000	—	30 Jun 2025	13F
BRIGHTON JONES LLC	13F	Company	0.47%	25,092	$11,136	—	30 Jun 2025	13F

Institutional Holders of HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (HBIO) as of Q3 2025

As of 30 Sep 2025, HARVARD BIOSCIENCE INC - Common Stock, par value $0.01 per share (HBIO) was held by 57 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 16,625,345 shares. The largest 10 holders included AMH Equity Ltd, Harvey Partners, LLC, VANGUARD GROUP INC, ACADIAN ASSET MANAGEMENT LLC, Meros Investment Management, LP, RENAISSANCE TECHNOLOGIES LLC, BlackRock, Inc., Granahan Investment Management, LLC, MILLENNIUM MANAGEMENT LLC, and DIMENSIONAL FUND ADVISORS LP. This page lists 57 institutional shareholders reporting positions in this security for the Q3 2025 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q3 2025 vs Q2 2025 Across Filers

Q2 2025 holders

Q3 2025 holders

Holder diff

-6

Investor	Q2 2025 Shares	Q3 2025 Shares	Share Diff	Share Chg %	Q2 2025 Value $	Q3 2025 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.