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ARDSLEY ADVISORY PARTNERS LP

Position in ORN — Orion Group Holdings Inc

CIK 900529 Norwalk, CT

Position in ORN

as of Jun 30, 2026 · filed Jul 13, 2026
Position Value
$3,364,000
+$1,184,000 QoQ
Shares Held
200,000
0.0% QoQ
Ownership
0.494%
of shares outstanding
% of Portfolio
0.38%
of 13F equity value
Holder Rank
#2
of 13 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in ORN Over Time

Shares Held

Position Value (USD)

Position in Engineering & Construction

Industrials · as of Jun 30, 2026

ARDSLEY ADVISORY PARTNERS LP holds $28,734,525 across 5 Engineering & Construction names. ORN ranks #3 (11.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 ORN
Orion Group Holdings Inc
This page
200,000 $3,364,000

All Filings in ORN

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8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,364,000 200,000
2026-03-31 $2,180,000 200,000
2025-12-31 $3,976,000 400,000
2025-09-30 $3,120,000 375,000
2025-06-30 $2,947,750 325,000
2025-03-31 $1,307,500 250,000
2024-12-31 $1,466,000 200,000
2024-09-30 $1,154,000 200,000