Harvard Bioscience Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqCM:HBIO Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
17 Mar 26	BuyUS$48,700	Stephen DeNelsky	Individual	10,000	US$4.87
17 Mar 26	BuyUS$103,604	William Snider	Individual	21,000	US$4.99
16 Mar 26	BuyUS$25,050	John Duke	Individual	5,000	US$5.01
16 Mar 26	BuyUS$25,000	Mark Frost	Individual	5,000	US$5.00

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of HBIO?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	20,949	0.464%
Individual Insiders	323,910	7.18%
Hedge Funds	660,197	14.6%
Institutions	1,252,738	27.8%
General Public	2,252,423	49.9%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 48.58% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
7.54%	AMH Equity, Ltd.	340,160	US$2.1m	0%	3.98%
7.1%	Weber Capital Management, LLC	320,037	US$2.0m	0%	1.83%
4.61%	James Green	207,756	US$1.3m	0%	no data
3.98%	Acadian Asset Management LLC	179,614	US$1.1m	1.33%	no data
3.62%	Vanguard Capital Management, LLC	163,313	US$1.0m	0%	no data
2.77%	Corsair Capital Management, L.P.	124,810	US$777.6k	12.6%	0.11%
2.63%	Meros Investment Management, LP	118,522	US$738.4k	-2.66%	0.27%
2.61%	Nano-Cap New Millennium Advisors, Llc	117,500	US$732.0k	95.8%	0.5%
2.53%	Two Sigma Investments, LP	114,117	US$710.9k	12.7%	no data
2.25%	Renaissance Technologies LLC	101,427	US$631.9k	-0.68%	no data
1.38%	BlackRock, Inc.	62,226	US$387.7k	0%	no data
1.32%	Geode Capital Management, LLC	59,511	US$370.8k	29.2%	no data
1.03%	Millennium Management LLC	46,332	US$288.6k	-15.2%	no data
0.93%	Katherine Eade	42,113	US$262.4k	35.4%	no data
0.61%	Vanguard Fiduciary Trust Company	27,730	US$172.8k	-0.22%	no data
0.6%	Essex Investment Management Company, LLC	27,021	US$168.3k	46.3%	0.02%
0.53%	Jane Street Group, LLC	23,830	US$148.5k	-42.6%	no data
0.47%	William Snider	21,000	US$130.8k	0%	no data
0.46%	Williams & Novak Wealth Management, LLC	20,949	US$130.5k	-22.6%	no data
0.35%	RBF Capital LLC	16,000	US$99.7k	0%	no data
0.33%	State Street Global Advisors, Inc.	14,932	US$93.0k	-0.02%	no data
0.24%	Robert Gagnon	11,000	US$68.5k	0%	no data
0.24%	Seth Benson	11,000	US$68.5k	0%	no data
0.23%	BNY Asset Management	10,230	US$63.7k	-19%	no data
0.22%	Stephen DeNelsky	10,000	US$62.3k	0%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/07/10 04:59
End of Day Share Price	2026/07/10 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Harvard Bioscience, Inc. is covered by 6 analysts. 2 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Raymond Myers	Benchmark Company
Bruce Jackson	Benchmark Company
Paul Knight	Brean Capital Historical (Janney Montgomery)