ESSEX INVESTMENT MANAGEMENT CO LLC

Position in MIR — Mirion Technologies, Inc.

CIK 201772 BOSTON, MA

Position in MIR

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

Position Value

$5,290,425

-$455,929 QoQ

Shares Held

295,060

-4.5% QoQ

Ownership

0.118%

of shares outstanding

% of Portfolio

0.71%

of 13F equity value

Holder Rank

#100

of 346 holders

Holding Since

Sep 2023

12 quarters on record

Voting authority Sole 51% Shared 0% None 49%

Industrials · as of Jun 30, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $37,740,140 across 13 Specialty Industrial Machinery names. MIR ranks #4 (14.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	GHM	Graham Corp	93,405	$11,562,604
2	GEV	GE Vernova Inc.	8,283	$9,731,365
3	AMSC	American Superconductor Corp /De/	221,933	$9,212,438
4	MIR	Mirion Technologies, Inc. This page	295,060	$5,290,425
5	XYL	Xylem Inc.	10,462	$1,236,713
6	BWEN	Broadwind, Inc.	94,671	$457,260
7	GTES	Gates Industrial Corp Ltd.	1,996	$55,828
8	OPTT	Ocean Power Technologies, Inc.	204,864	$53,264

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$5,290,425	295,060	-4.5%	Shares	Sole	2026-08-06
2026-03-31	$5,746,354	309,110	+1.9%	Shares	Sole	2026-05-11
2025-12-31	$7,104,503	303,352	-2.3%	Shares	Sole	2026-02-13
2025-09-30	$7,222,230	310,500	+3.6%	Shares	Sole	2025-11-06
2025-06-30	$6,455,038	299,816	-0.7%	Shares	Sole	2025-08-12
2025-03-31	$4,377,158	301,873	-0.8%	Shares	Sole	2025-05-07
2024-12-31	$5,309,249	304,255	-13.4%	Shares	Sole	2025-02-07
2024-09-30	$3,890,861	351,478	+0.3%	Shares	Sole	2024-10-10
2024-06-30	$3,764,348	350,498	+35.1%	Shares	Sole	2024-08-12
2024-03-31	$2,950,515	259,500	+0.6%	Shares	Sole	2024-05-03
2023-12-31	$2,645,248	258,073	-0.4%	Shares	Sole	2024-02-08
2023-09-30	$1,936,313	259,212	—	Shares	Sole	2023-11-09
No filing history on record for this holder in this stock.