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Minerva Advisors LLC
> GLDD
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Great Lakes Dredge & Dock CORP | GLDD | 1,208,298 | 0 | 9,835,000 | 3,298,000 | $8.14 |
| 03/31/2023 | Great Lakes Dredge & Dock CORP | GLDD | 1,208,298 | 201,758 | 6,537,000 | -1,092,000 | $5.41 |
| 09/30/2022 | Great Lakes Dredge & Dock CORP | GLDD | 1,006,540 | 27,000 | 7,629,000 | -5,203,000 | $7.58 |
| 06/30/2022 | Great Lakes Dredge & Dock CORP | GLDD | 979,540 | 0 | 12,832,000 | -882,000 | $13.10 |
| 03/31/2022 | Great Lakes Dredge & Dock CORP | GLDD | 979,540 | 0 | 13,714,000 | -1,664,000 | $14.00 |
| 12/31/2021 | Great Lakes Dredge & Dock CORP | GLDD | 979,540 | -3,000 | 15,378,000 | 551,000 | $15.70 |
| 09/30/2021 | Great Lakes Dredge & Dock CORP | GLDD | 982,540 | 0 | 14,827,000 | 473,000 | $15.09 |
| 06/30/2021 | Great Lakes Dredge & Dock CORP | GLDD | 982,540 | -3,000 | 14,354,000 | -25,000 | $14.61 |
| 03/31/2021 | Great Lakes Dredge & Dock CORP | GLDD | 985,540 | -72,553 | 14,379,000 | 434,000 | $14.59 |
| 12/31/2020 | Great Lakes Dredge & Dock CORP | GLDD | 1,058,093 | 0 | 13,945,000 | 3,883,000 | $13.18 |
| 09/30/2020 | Great Lakes Dredge & Dock CORP | GLDD | 1,058,093 | -35,649 | 10,062,000 | -66,000 | $9.51 |
| 06/30/2020 | Great Lakes Dredge & Dock CORP | GLDD | 1,093,742 | 49,873 | 10,128,000 | 1,495,000 | $9.26 |
| 03/31/2020 | Great Lakes Dredge & Dock CORP | GLDD | 1,043,869 | 31,519 | 8,633,000 | -2,827,000 | $8.27 |
| 12/31/2019 | Great Lakes Dredge & Dock CORP | GLDD | 1,012,350 | -49,095 | 11,460,000 | 368,000 | $11.32 |
| 09/30/2019 | Great Lakes Dredge & Dock CORP | GLDD | 1,061,445 | -17,888 | 11,092,000 | -791,000 | $10.45 |
| 06/30/2019 | Great Lakes Dredge & Dock CORP | GLDD | 1,079,333 | -32,000 | 11,883,000 | 1,992,000 | $11.01 |
| 03/31/2019 | Great Lakes Dredge & Dock CORP | GLDD | 1,111,333 | 0 | 9,891,000 | 2,546,000 | $8.90 |
| 12/31/2018 | Great Lakes Dredge & Dock CORP | GLDD | 1,111,333 | 0 | 7,345,000 | 510,000 | $6.61 |
| 09/30/2018 | Great Lakes Dredge & Dock CORP | GLDD | 1,111,333 | 0 | 6,835,000 | 1,000,000 | $6.15 |
| 06/30/2018 | Great Lakes Dredge & Dock CORP | GLDD | 1,111,333 | 0 | 5,835,000 | 779,000 | $5.25 |
| 03/31/2018 | Great Lakes Dredge & Dock CORP | GLDD | 1,111,333 | 0 | 5,056,000 | -945,000 | $4.55 |
| 12/31/2017 | Great Lakes Dredge & Dock CORP | GLDD | 1,111,333 | 0 | 6,001,000 | 611,000 | $5.40 |
| 09/30/2017 | Great Lakes Dredge & Dock CORP | GLDD | 1,111,333 | 1,949 | 5,390,000 | 675,000 | $4.85 |
| 06/30/2017 | Great Lakes Dredge & Dock CORP | GLDD | 1,109,384 | -1,600 | 4,715,000 | 271,000 | $4.25 |
| 03/31/2017 | Great Lakes Dredge & Dock CORP | GLDD | 1,110,984 | 1,110,984 | 4,444,000 | 4,444,000 | $4.00 |
| 12/31/2015 | Great Lakes Dredge & Dock CORP | GLDD | 0 | -768,477 | 0 | -3,874,000 | |
| 09/30/2015 | Great Lakes Dredge & Dock CORP | GLDD | 768,477 | 768,477 | 3,874,000 | 3,874,000 | $5.04 |
| 06/30/2015 | Great Lakes Dredge & Dock CORP | GLDD | 678,427 | 678,427 | 4,051,000 | 4,051,000 | $5.97 |
| 03/31/2015 | Great Lakes Dredge & Dock CORP | GLDD | 478,427 | 478,427 | 2,871,000 | 2,871,000 | $6.00 |
| 12/31/2014 | Great Lakes Dredge & Dock CORP | GLDD | 475,227 | 475,227 | 4,068,000 | 4,068,000 | $8.56 |
| 09/30/2014 | Great Lakes Dredge & Dock CORP | GLDD | 475,227 | 475,227 | 2,937,000 | 2,937,000 | $6.18 |
| 06/30/2014 | Great Lakes Dredge & Dock CORP | GLDD | 475,227 | 475,227 | 3,797,000 | 3,797,000 | $7.99 |
| 03/31/2014 | Great Lakes Dredge & Dock CORP | GLDD | 475,227 | 475,227 | 4,334,000 | 4,334,000 | $9.12 |
| 12/31/2013 | Great Lakes Dredge & Dock CORP | GLDD | 455,227 | 455,227 | 4,183,000 | 4,183,000 | $9.19 |
| 06/30/2013 | Great Lakes Dredge & Dock CORP | GLDD | 0 | -433,607 | 0 | -2,914,000 | |
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