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Ownership Document |
Schema Version: X0508 |
Document Type: 4 |
Period of Report: 3/28/24 |
Not Subject to Section 16: 0 |
Issuer: |
| Issuer CIK: 1372020 |
| Issuer Name: Great Lakes Dredge & Dock CORP |
| Issuer Trading Symbol: GLDD |
Reporting Owner: |
| Reporting Owner ID: |
| | Owner CIK: 1292085 |
| | Owner Name: Shanahan Kathleen M |
| Reporting Owner Address: |
| | Owner Street 1: C/O GREAT LAKES DREDGE & DOCK CORP. |
| | Owner Street 2: 9811 KATY FREEWAY, SUITE 1200 |
| | Owner City: HOUSTON |
| | Owner State: TX |
| | Owner ZIP Code: 77024 |
| | Owner State Description: |
| Reporting Owner Relationship: |
| | Is Director? Yes |
| | Is Officer? No |
| | Is Ten Percent Owner? No |
| | Is Other? No |
Aff 10b5 One: 0 |
Non-Derivative Table: |
| Non-Derivative Holding: |
| | Security Title: |
| | | Value: Common Stock |
| | Post-Transaction Amounts: |
| | | Shares Owned Following Transaction: |
| Value: 90,913 |
| | Ownership Nature: |
| | | Direct or Indirect Ownership: |
| Value: D |
Derivative Table: |
| Derivative Transaction: |
| | Security Title: |
| | | Value: Deferred Stock Units |
| | Conversion or Exercise Price: |
| | | Footnote ID: F1 |
| | Transaction Date: |
| | | Value: 3/28/24 |
| | Deemed Execution Date: |
| | Transaction Coding: |
| | | Transaction Form Type: 4 |
| | | Transaction Code: A |
| | | Equity Swap Involved? No |
| | Transaction Timeliness: |
| | | Value: |
| | Transaction Amounts: |
| | | Transaction Shares: |
| Value: 2,286 |
| | | Transaction Price Per Share: |
| Value: 0.00 |
| | | Transaction Acquired-Disposed Code: |
| Value: A |
| | Exercise Date: |
| | | Footnote ID: F1 |
| | Expiration Date: |
| | | Footnote ID: F1 |
| | Underlying Security: |
| | | Underlying Security Title: |
| Value: Common Stock |
| | | Underlying Security Shares: |
| Value: 2,286 |
| | Post-Transaction Amounts: |
| | | Shares Owned Following Transaction: |
| Value: 2,286 |
| | Ownership Nature: |
| | | Direct or Indirect Ownership: |
| Value: D |
Footnotes: |
| Footnote - F1: Deferred Stock Units ("DSUs") granted March 28, 2024 and deferred pursuant to the Company's Director Deferral Plan. The DSUs will be payable in common stock on a 1-for-1 basis in three equal annual installments beginning January 15, 2025. |
Remarks: |
Owner Signature: |
| Signature Name: /s/Vivienne R. Schiffer, by Power of Attorney |
| Signature Date: 4/1/24 |