ESSEX INVESTMENT MANAGEMENT CO LLC

Position in AMPG — AmpliTech Group, Inc.

CIK 201772 BOSTON, MA

Position in AMPG

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

Position Value

$421,260

+$254,364 QoQ

Shares Held

60,526

-31.1% QoQ

Ownership

0.201%

of shares outstanding

% of Portfolio

0.06%

of 13F equity value

Holder Rank

#22

of 63 holders

Holding Since

Mar 2025

6 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $10,487,064 across 4 Communication Equipment names. AMPG ranks #3 (4.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FEIM	Frequency Electronics Inc	89,043	$5,908,003
2	LTRX	Lantronix Inc	662,070	$3,892,971
3	AMPG	AmpliTech Group, Inc. This page	60,526	$421,260
4	OCC	Optical Cable Corp	12,629	$264,830

6 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$421,260	60,526	-31.1%	Shares	Sole	2026-08-06
2026-03-31	$166,896	87,840	0.0%	Shares	Sole	2026-05-11
2025-12-31	$262,641	87,840	+26.7%	Shares	Sole	2026-02-13
2025-09-30	$269,643	69,317	0.0%	Shares	Sole	2025-11-06
2025-06-30	$146,952	69,317	+18.2%	Shares	Sole	2025-08-12
2025-03-31	$90,933	58,667	—	Shares	Sole	2025-05-07
No filing history on record for this holder in this stock.