Portolan Capital Management, LLC

Position in IESC — IES Holdings, Inc.

CIK 1350290 BOSTON, MA

Position in IESC

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

Position Value

$2,850,480

-$8,459,964 QoQ

Shares Held

3,880

-83.7% QoQ

Ownership

0.010%

of shares outstanding

% of Portfolio

0.11%

of 13F equity value

Holder Rank

#142

of 410 holders

Holding Since

Jun 2024

6 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. IESC ranks #3 (21.2% of the industry book) .

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

6 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,850,480	1,940	-83.7%	Shares	Sole	2026-08-14
2026-03-31	$11,310,444	11,869	+0.7%	Shares	Sole	2026-05-15
2025-12-31	$9,174,647	11,792	+439.4%	Shares	Sole	2026-02-17
2024-12-31	$878,597	2,186	-94.5%	Shares	Sole	2025-02-13
2024-09-30	$15,726,462	39,391	-43.3%	Shares	Sole	2024-11-14
2024-06-30	$19,354,330	69,455	—	Shares	Sole	2024-08-14
No filing history on record for this holder in this stock.