GREAT LAKES DREDGE & DOCK CO

Ticker: GLDD CUSIP: 390607109 Class: Common Stock

Y-Intercept (Hong Kong) Ltd's Holding History (CIK: 0001772875)

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

Q4 2025

Shares 213,516 Value ($000) $2,801 Avg Close $12.32 Range $10.71 - $14.02

Q3 2025

Shares 102,318 Value ($000) $1,227 Avg Close $11.59 Range $10.37 - $12.56

Q2 2024

Shares 14,144 Value ($000) $124 Avg Close $8.50 Range $6.55 - $9.76

Q1 2024

Shares 20,857 Value ($000) $182 Avg Close $8.23 Range $7.01 - $9.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	213,516	$2,801	$12.32	$10.71 - $14.02
Q3 2025	102,318	$1,227	$11.59	$10.37 - $12.56
Q2 2024	14,144	$124	$8.50	$6.55 - $9.76
Q1 2024	20,857	$182	$8.23	$7.01 - $9.78