ESSEX INVESTMENT MANAGEMENT CO LLC

Position in NEPH — Nephros Inc

CIK 201772 BOSTON, MA

Position in NEPH

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

Position Value

$138,969

+$22,797 QoQ

Shares Held

38,927

-0.1% QoQ

Ownership

0.358%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#12

of 33 holders

Holding Since

Mar 2020

7 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. NEPH ranks #4 (4.4% 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	26,973	$165,883
4	NEPH	Nephros Inc This page	38,927	$138,969

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$138,969	38,927	-0.1%	Shares	Sole	2026-08-06
2026-03-31	$116,172	38,984	0.0%	Shares	Sole	2026-05-11
2025-12-31	$190,241	38,984	+57.1%	Shares	Sole	2026-02-13
2025-09-30	$117,408	24,822	0.0%	Shares	Sole	2025-11-06
2025-06-30	$101,521	24,822	-37.7%	Shares	Sole	2025-08-12
2020-06-30	$334,450	39,863	0.0%	Shares	Sole	2020-08-04
2020-03-31	$251,136	39,863	—	Shares	Sole	2020-05-04
No filing history on record for this holder in this stock.