Portolan Capital Management, LLC

Position in WLDN — Willdan Group, Inc.

CIK 1350290 BOSTON, MA

Position in WLDN

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$6,675,565

-$518,318 QoQ

Shares Held

84,394

-10.2% QoQ

Ownership

0.554%

of shares outstanding

% of Portfolio

0.25%

of 13F equity value

Holder Rank

#37

of 243 holders

Holding Since

Jun 2025

5 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

Portolan Capital Management, LLC holds $13,437,154 across 3 Engineering & Construction names. WLDN ranks #1 (49.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	WLDN	Willdan Group, Inc. This page	84,394	$6,675,565
2	ECG	Everus Construction Group, Inc.	23,568	$3,911,109
3	IESC	IES Holdings, Inc.	3,880	$2,850,480

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$6,675,565	84,394	-10.2%	Shares	Sole	2026-08-14
2026-03-31	$7,193,883	93,964	+63.1%	Shares	Sole	2026-05-15
2025-12-31	$5,972,163	57,613	+232.2%	Shares	Sole	2026-02-17
2025-09-30	$1,676,991	17,344	-89.7%	Shares	Sole	2025-11-13
2025-06-30	$10,535,810	168,546	—	Shares	Sole	2025-08-13
No filing history on record for this holder in this stock.