ARDSLEY ADVISORY PARTNERS LP

Position in PRIM — Primoris Services Corp

CIK 900529 Norwalk, CT

Position in PRIM

as of Jun 30, 2026 · filed Jul 13, 2026 Compact

Position Value

$13,381,200

+$11,371,850 QoQ

Shares Held

135,000

+285.7% QoQ

Ownership

0.249%

of shares outstanding

% of Portfolio

1.49%

of 13F equity value

Holder Rank

of 32 holders

Holding Since

Jun 2021

9 quarters on record

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

Industrials · as of Jun 30, 2026

ARDSLEY ADVISORY PARTNERS LP holds $28,734,525 across 5 Engineering & Construction names. PRIM ranks #1 (46.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	PRIM	Primoris Services Corp This page	135,000	$13,381,200
2	FLR	Fluor Corp	142,500	$7,465,575
3	ORN	Orion Group Holdings Inc	200,000	$3,364,000
4	KBR	Kbr, Inc.	75,000	$2,589,750
5	ESOA	Energy Services of America CORP	100,000	$1,934,000

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$13,381,200	135,000	+285.7%	Shares	Sole	2026-07-13
2025-03-31	$2,009,350	35,000	-7.9%	Shares	Sole	2025-05-15
2024-06-30	$1,895,820	38,000	+38.2%	Shares	Sole	2024-08-14
2024-03-31	$1,170,675	27,500	-67.9%	Shares	Sole	2024-05-15
2023-12-31	$2,842,776	85,600	+84.1%	Shares	Sole	2024-02-14
2023-09-30	$1,521,945	46,500	-43.8%	Shares	Sole	2023-11-14
2023-06-30	$2,521,392	82,750	+727.5%	Shares	Sole	2023-08-14
2023-03-31	$246,600	10,000	-60.0%	Shares	Sole	2023-05-15
2021-06-30	$735,750	25,000	—	Shares	Sole	2021-08-16
No filing history on record for this holder in this stock.