HEARTLAND ADVISORS INC

Position in TGEN — Tecogen Inc.

CIK 937394 MILWAUKEE, WI

Position in TGEN

as of Jun 30, 2026 · filed Aug 11, 2026 Compact

Position Value

$950,562

New position

Shares Held

182,100

first reported quarter

Ownership

0.603%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

#16

of 69 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 79% Shared 0% None 21%

Industrials · as of Jun 30, 2026

HEARTLAND ADVISORS INC holds $13,093,260 across 3 Electrical Equipment & Parts names. TGEN ranks #3 (7.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	HUBB	Hubbell Inc	15,626	$8,175,523
2	HAYW	Hayward Holdings, Inc.	229,184	$3,967,175
3	TGEN	Tecogen Inc. This page	182,100	$950,562

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$950,562	182,100	—	Shares	Defined	2026-08-11
No filing history on record for this holder in this stock.