GLDD SVP granted 8.743 restricted stock units

Great Lakes Dredge & Dock CORP senior vice president granted stock units SVP of Market Development William H. Hanson acquired 8.743 shares of Great Lakes Dredge & Dock common stock through a grant of restricted stock units at a stated price of $0.00 per share.

Rhea-AI Filing Summary

Great Lakes Dredge & Dock CORP senior vice president granted stock units

SVP of Market Development William H. Hanson acquired 8.743 shares of Great Lakes Dredge & Dock common stock through a grant of restricted stock units at a stated price of $0.00 per share. These units vest in three equal annual installments beginning on February 23, 2027, bringing his directly held total to 68,985.743 shares.

Insider Trade Summary

Grant/Award: 8.743 shares

Grant/Award 1 txn

Insider HANSON WILLIAM H

Role SVP, Market Development

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	8.743	$0.00	$0.00

Holdings After Transaction: Common Stock — 68,985.743 shares (Direct)

Footnotes (1)

1. F1. Represents restricted stock units that vest in three equal annual installments beginning on February 23, 2027.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did GLDD report for William H. Hanson?

Great Lakes Dredge & Dock reported that SVP of Market Development William H. Hanson acquired 8.743 shares of common stock via a grant of restricted stock units. The grant carried a stated price of $0.00 per share and increased his directly held total to 68,985.743 shares.

How many GLDD shares does William H. Hanson hold after this Form 4?

After the reported grant, William H. Hanson directly holds a total of 68,985.743 shares of Great Lakes Dredge & Dock common stock. This reflects the addition of 8.743 shares received through restricted stock units, as disclosed in the Form 4 insider transaction report.

What type of security was granted to GLDD executive William H. Hanson?

The transaction involved Great Lakes Dredge & Dock common stock delivered through restricted stock units. These restricted units convert into common shares as they vest, aligning the senior vice president’s compensation more closely with company performance over the specified vesting schedule.

When do William H. Hanson’s new GLDD restricted stock units vest?

The restricted stock units granted to William H. Hanson vest in three equal annual installments beginning on February 23, 2027. Each year, one-third of the units will vest, gradually converting into common shares according to the schedule described in the insider transaction footnote.

Was the GLDD insider grant to William H. Hanson a market purchase?

No, the reported transaction was a grant or award acquisition of restricted stock units with a stated price of $0.00 per share. It was not an open-market purchase, but rather part of equity-based compensation awarded to the Great Lakes Dredge & Dock executive.

What role does William H. Hanson hold at Great Lakes Dredge & Dock (GLDD)?

William H. Hanson serves as Senior Vice President, Market Development, at Great Lakes Dredge & Dock. His Form 4 insider report reflects equity-based compensation in the form of restricted stock units tied to the company’s common stock, aligning his interests with shareholders.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/25/2026 - 04:41 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

HANSON WILLIAM H

(Last) (First) (Middle)

C/O GREAT LAKES DREDGE & DOCK CORP.

9811 KATY FREEWAY, SUITE 1200

(Street)

HOUSTON TX 77024

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Great Lakes Dredge & Dock CORP [ GLDD ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Market Development

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/23/2026		A		8.743	A	(1)	68,985.743	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents restricted stock units that vest in three equal annual installments beginning on February 23, 2027.

	/s/Vivienne R. Schiffer, by Power of Attorney	02/25/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.