Great Lakes Dredge (GLDD) SVP awarded 16,320 restricted stock units

Rhea-AI Filing Summary

Great Lakes Dredge & Dock CORP reported an equity award to senior vice president Eleni Beyko. She acquired 16,320 shares of common stock through a grant classified as a restricted stock unit award at a stated price of $0.00 per share. These restricted stock units vest in three equal annual installments beginning on February 23, 2027. Following this award, Beyko’s directly held common stock (including the granted units) totals 121,834 shares.

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

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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^*

BEYKO ELENI

(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 - Offshore Energy

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		16,320	A	(1)	121,834	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.

FAQ

What insider transaction did GLDD report for Eleni Beyko?

Great Lakes Dredge & Dock reported that SVP Eleni Beyko received a grant of 16,320 restricted stock units of common stock. The grant was recorded at $0.00 per share and represents an equity compensation award rather than an open-market purchase or sale.

How many GLDD shares does Eleni Beyko hold after this Form 4?

After the reported award, Eleni Beyko directly holds a total of 121,834 shares of Great Lakes Dredge & Dock common stock. This figure includes the newly granted 16,320 restricted stock units reported in the Form 4 filing.

What type of shares did GLDD grant to Eleni Beyko?

The award consists of restricted stock units tied to Great Lakes Dredge & Dock common stock. The units were granted at a stated price of $0.00 per share, reflecting stock-based compensation rather than a cash transaction in the open market.

When do Eleni Beyko’s GLDD restricted stock units vest?

The restricted stock units granted to Eleni Beyko vest in three equal annual installments beginning on February 23, 2027. This means the award will become fully vested over a three-year period, subject to the vesting conditions outlined for the grant.

Does the GLDD Form 4 show a buy or sell transaction?

The Form 4 reflects an acquisition through a grant or award, not a buy or sell in the market. The transaction code is “A”, indicating a grant, award, or other acquisition of 16,320 restricted stock units of common stock.