GREAT LAKES DREDGE & DOCK CO

Ticker: GLDD CUSIP: 390607109 Class: Common Stock

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q4 2015
Shares 31,700 Value ($000) $126 Avg Close $4.43 Range $3.66 - $5.88
Q3 2015
Shares 43,200 Value ($000) $218 Avg Close $5.48 Range $5.00 - $6.17
Q2 2015
Shares 41,600 Value ($000) $248 Avg Close $5.87 Range $5.33 - $6.30
Q1 2015
Shares 38,200 Value ($000) $230 Avg Close $7.05 Range $5.53 - $8.64
Q4 2014
Shares 50,200 Value ($000) $430 Avg Close $7.24 Range $5.84 - $8.73
Q3 2014
Shares 50,200 Value ($000) $310 Avg Close $7.38 Range $6.16 - $8.29
Q2 2014
Shares 44,200 Value ($000) $353 Avg Close $8.15 Range $7.36 - $9.20
Q1 2014
Shares 44,200 Value ($000) $404 Avg Close $8.52 Range $7.45 - $9.44
Q4 2013
Shares 44,200 Value ($000) $407 Avg Close $8.38 Range $6.99 - $9.33
Q3 2013
Shares 44,200 Value ($000) $328 Avg Close $7.43 Range $6.28 - $8.69
Q2 2013
Shares 42,200 Value ($000) $330 Avg Close $7.58 Range $6.30 - $8.66