GREAT LAKES DREDGE & DOCK CO

Ticker: GLDD CUSIP: 390607109 Class: Common Stock

Aigen Investment Management, LP's Holding History (CIK: 0001741224)

Note: Option positions (PUT/CALL) are excluded.

Q4 2023

Shares 31,584 Value ($000) $243 Avg Close $7.28 Range $6.12 - $8.28

Q4 2020

Shares 11,105 Value ($000) $146 Avg Close $11.20 Range $9.10 - $13.39

Q3 2020

Shares 12,873 Value ($000) $122 Avg Close $9.17 Range $8.17 - $10.57

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2023	31,584	$243	$7.28	$6.12 - $8.28
Q4 2020	11,105	$146	$11.20	$9.10 - $13.39
Q3 2020	12,873	$122	$9.17	$8.17 - $10.57