Harvard Bioscience Ownership | Who Owns Harvard Bioscience?

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Harvard Bioscience Ownership Summary

Harvard Bioscience is owned by 24.26% institutional investors, 7.67% insiders, and 68.06% retail investors. Amh equity is the largest institutional shareholder, holding 9.14% of HBIO shares. Harvey Partners Small-Cap Opportunity is the top mutual fund, with 4.42% of its assets in Harvard Bioscience shares.

HBIO Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Harvard Bioscience	24.26%	7.67%	68.06%
Sector	Healthcare Stocks	35.58%	11.87%	52.55%
Industry	Medical Instruments & Supplies Stocks	35.51%	13.37%	51.13%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Amh equity	4.05M	9.14%	$1.77M
Blackrock	2.84M	6.55%	$8.10M
Harvey partners	2.05M	4.63%	$898.92K
Vanguard group	1.92M	4.32%	$1.29M
Meros investment management, lp	118.52K	2.65%	$577.21K
Nano cap new millennium growth fund l p	117.50K	2.63%	$572.23K
Granahan investment management	603.52K	1.36%	$264.64K
Vanguard fiduciary trust	27.73K	0.62%	$135.04K
Two sigma advisers, lp	243.16K	0.55%	$106.62K
Nuveen asset management	140.00K	0.32%	$295.40K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Amh equity	4.05M	2.21%	$1.77M
Nano cap new millennium growth fund l p	117.50K	0.54%	$572.23K
Meros investment management, lp	118.52K	0.25%	$577.21K
Harvey partners	2.05M	0.08%	$898.92K
Clarivest asset management	114.27K	0.03%	$325.67K
Triton wealth management, p	13.41K	0.03%	$44.26K
Granahan investment management	603.52K	0.01%	$264.64K
Point72 asia (singapore) pte.	14.70K	0.00%	$6.45K
Cubist systematic strategies	14.14K	0.00%	$40.31K
Two sigma advisers, lp	243.16K	0.00%	$106.62K

Top Buyers

Holder	Shares	% Assets	Change
Amh equity	4.05M	2.21%	538.83K
Two sigma advisers, lp	243.16K	0.00%	196.31K
Vanguard group	1.92M	-	71.43K
Vanguard fiduciary trust	27.73K	-	27.73K
Bank of america corp /de/	25.86K	-	15.44K

Top Sellers

Holder	Shares	% Assets	Change
Royce & associates lp	-	-	-1.78M
Acadian asset management	-	-	-1.77M
B. riley asset management	-	-	-1.35M
Boothbay fund management	-	-	-1.15M
Corsair capital management	-	-	-1.11M

New Positions

Holder	Shares	% Assets	Change	Value
Vanguard fiduciary trust	27.73K	-	27.73K	$135.04K
Cubist systematic strategies	14.14K	0.00%	14.14K	$40.31K
Vanguard global advisers	1.22K	-	1.22K	$5.95K
Cwm	4.00	-	4.00	$19.00

Sold Out

Holder	Change
Northwestern mutual wealth management	-4.00
Optiver b.v.	-14.00
Ifp advisors	-15.00
Barclays	-21.00
Capital performance advisors llp	-41.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	24	-62.50%	1,085,287	-93.78%	24	1.57%	5	-84.38%	19	5.56%
Dec 31, 2025	41	-30.51%	11,637,146	-30.00%	26	1.85%	20	11.11%	10	-60.00%
Sep 30, 2025	58	-6.45%	16,593,159	-10.92%	37	2.12%	18	-41.94%	24	-
Jun 30, 2025	65	-27.78%	18,909,639	-26.25%	42	1.26%	33	10.00%	25	-34.21%
Mar 31, 2025	2	-97.89%	3,715,394	-87.95%	8	0.17%	-	-100.00%	2	-91.67%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Harvey Partners Small-Cap Opportunity	1.97M	4.42%	-52.56K
Vanguard US Total Market Shares ETF	1.26M	2.86%	-
Vanguard Total Stock Mkt Idx Inv	123.47K	2.74%	-
Acuitas US Microcap Strategy	102.35K	2.27%	-920.57K
Heartland Value Investor	937.14K	2.12%	-171.43K
Royce Micro-Cap Trust Inc	860.63K	1.95%	-11.42K
Royce Micro Cap Trust	860.63K	1.95%	-11.42K
Royce Micro-Cap Invmt	638.54K	1.44%	-8.48K
Granahan SC Advantage	433.80K	0.98%	-20.00K
JNL Multi-Manager Small Cap Growth A	433.80K	0.98%	-20.00K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Mar 16, 2026	Frost Mark T	Chief Financial Officer	Buy	$25.00K
Mar 17, 2026	DENELSKY STEPHEN J	-	Buy	$48.70K
Mar 16, 2026	Duke John D	Chief Executive Officer	Buy	$25.05K
Jun 13, 2024	Green James W	Chief Executive Officer	Buy	$29.10K
Jun 06, 2024	Green James W	Chief Executive Officer	Buy	$61.40K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	4	-
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	-	-
2025 Q1	-	-

HBIO Ownership FAQ

Who Owns Harvard Bioscience?

Harvard Bioscience shareholders are primarily institutional investors at 24.26%, followed by 7.67% insiders and 68.07% retail investors. The average institutional ownership in Harvard Bioscience's industry, Medical Instruments & Supplies Stocks, is 35.51%, which Harvard Bioscience falls below.

Who owns the most shares of Harvard Bioscience?

Harvard Bioscience’s largest shareholders are Amh equity (4.05M shares, 9.14%), Blackrock (2.84M shares, 6.55%), and Harvey partners (2.05M shares, 4.63%). Together, they hold 20.32% of Harvard Bioscience’s total shares outstanding.

Does Blackrock own Harvard Bioscience?

Yes, BlackRock owns 6.55% of Harvard Bioscience, totaling 2.84M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 8.1M$. In the last quarter, BlackRock increased its holdings by 9.99K shares, a 0.35% change.

Who is Harvard Bioscience’s biggest shareholder by percentage of total assets invested?

Amh equity is Harvard Bioscience’s biggest shareholder by percentage of total assets invested, with 2.21% of its assets in 4.05M Harvard Bioscience shares, valued at 1.77M$.

Who is the top mutual fund holder of Harvard Bioscience shares?

Harvey Partners Small-Cap Opportunity is the top mutual fund holder of Harvard Bioscience shares, with 4.42% of its total shares outstanding invested in 1.97M Harvard Bioscience shares.

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