Willdan Group (WLDN) awards CEO 18,000-share RSU grant

Rhea-AI Filing Summary

BIEBER MICHAEL A reported acquisition or exercise transactions in this Form 4 filing.

Willdan Group, Inc. president and CEO Michael A. Bieber reported an equity award of 18,000 shares of common stock in the form of restricted stock units granted on March 3, 2026. The units were awarded at no cash cost per share.

These 18,000 restricted stock units vest in three substantially equal installments on March 3, 2027, March 3, 2028, and March 3, 2029, subject to his continued service with Willdan through each vesting date. Following this grant and including previously awarded equity and 154 shares purchased under the company’s employee stock purchase plan on December 31, 2025, Bieber directly holds 225,696 shares of Willdan common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider BIEBER MICHAEL A

Role PRESIDENT AND CEO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	18,000	$0.00	--

Holdings After Transaction: Common Stock — 225,696 shares (Direct)

Footnotes (1)

1. Represents shares of restricted stock units awarded to the Reporting Person by the Issuer on March 3, 2026, which vest in three substantially equal installments on each of March 3, 2027, March 3, 2028 and March 3, 2029, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date. Includes (i) 18,000 shares of restricted stock units that vest in three substantially equal installments on each of March 3, 2027, March 3, 2028 and March 3, 2029, (ii) 19,250 shares of restricted stock units that vest in three substantially equal installments on each of March 17, 2026, March 17, 2027 and March 17, 2028, (iii) 11,667 shares of restricted stock units that vest in two substantially equal installments on each of March 20, 2026 and March 20, 2027 and (iv) 4,434 shares of restricted stock that vest on March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date. Includes 154 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on December 31, 2025.

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Form 4 Insider Transactions: What Each Field Means →

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^*

BIEBER MICHAEL A

(Last) (First) (Middle)

2401 EAST KATELLA AVENUE

SUITE 300

(Street)

ANAHEIM CA 92806

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Willdan Group, Inc. [ WLDN ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	PRESIDENT AND CEO

3. Date of Earliest Transaction (Month/Day/Year)
03/03/2026

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	03/03/2026		A		18,000(1)	A	$0	225,696(2)(3)	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 shares of restricted stock units awarded to the Reporting Person by the Issuer on March 3, 2026, which vest in three substantially equal installments on each of March 3, 2027, March 3, 2028 and March 3, 2029, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

2. Includes (i) 18,000 shares of restricted stock units that vest in three substantially equal installments on each of March 3, 2027, March 3, 2028 and March 3, 2029, (ii) 19,250 shares of restricted stock units that vest in three substantially equal installments on each of March 17, 2026, March 17, 2027 and March 17, 2028, (iii) 11,667 shares of restricted stock units that vest in two substantially equal installments on each of March 20, 2026 and March 20, 2027 and (iv) 4,434 shares of restricted stock that vest on March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

3. Includes 154 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on December 31, 2025.

	/s/ Creighton K. Early, Attorney-in-fact for Michael A. Bieber	03/05/2026
	** 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 Willdan Group (WLDN) report for Michael A. Bieber?

Willdan Group reported that CEO Michael A. Bieber received an award of 18,000 restricted stock units on March 3, 2026. These units represent shares of common stock granted as equity compensation at no cash cost per share.

How do Michael A. Bieber’s 18,000 Willdan (WLDN) RSUs vest?

The 18,000 restricted stock units vest in three substantially equal installments on March 3, 2027, March 3, 2028, and March 3, 2029. Vesting is conditioned on Bieber’s continued service to Willdan Group through each applicable vesting date.

How many Willdan Group (WLDN) shares does Michael A. Bieber now directly hold?

After the March 3, 2026 award, Michael A. Bieber directly holds 225,696 shares of Willdan common stock. This figure includes various restricted stock unit awards with future vesting dates and 154 shares purchased under the company’s employee stock purchase plan.

Was Michael A. Bieber’s latest Willdan (WLDN) Form 4 a stock purchase or an equity award?

The Form 4 reflects an equity award, not an open-market stock purchase. Bieber received 18,000 shares in the form of restricted stock units granted by Willdan Group as compensation, with vesting over three years and no cash price per share.

What other unvested Willdan Group (WLDN) equity awards does Michael A. Bieber hold?

His holdings include 19,250 restricted stock units vesting in three installments on March 17, 2026, 2027, and 2028; 11,667 restricted stock units vesting in two installments on March 20, 2026 and 2027; and 4,434 restricted shares vesting on March 7, 2026.