ESSEX INVESTMENT MANAGEMENT CO LLC

Position in HBIO — Harvard Bioscience Inc

CIK 201772 BOSTON, MA

Position in HBIO

as of Jun 30, 2026 · filed Aug 6, 2026 Compact

Position Value

$165,883

+$34,291 QoQ

Shares Held

26,973

-0.2% QoQ

Ownership

0.593%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#14

of 37 holders

Holding Since

Mar 2020

12 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $3,160,446 across 4 Medical Instruments & Supplies names. HBIO ranks #3 (5.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	STXS	Stereotaxis, Inc.	1,521,966	$2,617,781
2	POCI	Precision Optics Corporation, Inc.	46,630	$237,813
3	HBIO	Harvard Bioscience Inc This page	26,973	$165,883
4	NEPH	Nephros Inc	38,927	$138,969

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$165,883	26,973	-0.2%	Shares	Sole	2026-08-06
2026-03-31	$131,592	27,021	-85.4%	Shares	Sole	2026-05-11
2025-12-31	$123,734	184,678	-57.2%	Shares	Sole	2026-02-13
2022-03-31	$2,681,776	431,848	+4.8%	Shares	Sole	2022-05-09
2021-12-31	$2,903,718	411,875	+8.2%	Shares	Sole	2022-02-10
2021-09-30	$2,657,537	380,736	-0.6%	Shares	Sole	2021-11-09
2021-06-30	$3,191,914	383,183	+27.5%	Shares	Sole	2021-08-12
2021-03-31	$1,640,817	300,516	-9.5%	Shares	Sole	2021-05-12
2020-12-31	$1,424,773	332,115	-15.8%	Shares	Sole	2021-02-12
2020-09-30	$1,187,411	394,489	+58.5%	Shares	Sole	2020-11-12
2020-06-30	$771,391	248,836	-0.5%	Shares	Sole	2020-08-04
2020-03-31	$552,500	250,000	—	Shares	Sole	2020-05-04
No filing history on record for this holder in this stock.