ESSEX INVESTMENT MANAGEMENT CO LLC

Position in AMPG — AmpliTech Group, Inc.

CIK 201772 BOSTON, MA

Position in AMPG

as of Mar 31, 2026 · filed May 11, 2026 Compact

Position Value

$166,896

-$95,745 QoQ

Shares Held

87,840

0.0% QoQ

Ownership

0.347%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

#15

of 38 holders

Holding Since

Mar 2025

5 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Technology · as of Mar 31, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $8,461,990 across 4 Communication Equipment names. AMPG ranks #4 (2.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FEIM	Frequency Electronics Inc	93,026	$4,117,330
2	EXTR	Extreme Networks Inc	158,032	$2,383,122
3	LTRX	Lantronix Inc	342,489	$1,794,642
4	AMPG	AmpliTech Group, Inc. This page	87,840	$166,896

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
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.