Willdan CEO gets 15,750 RSUs vested, shares withheld

Willdan Group, Inc. President and CEO Michael A. Bieber reported the vesting of performance-based restricted stock units into 15,750 shares of Common Stock after performance conditions were certified on March 25, 2026.

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(Very High)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Willdan Group, Inc. President and CEO Michael A. Bieber reported the vesting of performance-based restricted stock units into 15,750 shares of Common Stock after performance conditions were certified on March 25, 2026. These shares were granted at no cash cost to him.

To cover related tax withholding obligations, the company withheld 6,444 shares of Common Stock valued at $82.80 per share, a non-market disposition. After these routine compensation-related transactions, Bieber directly holds 249,525 shares of Common Stock, plus additional unvested restricted stock units scheduled to vest between 2027 and 2029.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider BIEBER MICHAEL A

Role PRESIDENT AND CEO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	15,750	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	6,444	$82.80	$534K

Holdings After Transaction: Common Stock — 249,525 shares (Direct)

Footnotes (3)

F1. Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 20, 2024. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee effective on March 25, 2026, resulting in the immediate vesting of the restricted stock units as to 15,750 shares of Common Stock.
F2. 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) 12,834 shares of restricted stock units that vest in two substantially equal installments on each of March 17, 2027 and March 17, 2028, and (iii) 5,834 shares of restricted stock units that vest on March 20, 2027, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.
F3. Represents shares of the Issuer's Common Stock withheld to satisfy tax withholding obligations in connection with the vesting of the performance-based restricted stock units referenced in footnote (1).

FAQ

What insider transactions did Willdan Group (WLDN) CEO Michael Bieber report?

Michael Bieber reported the vesting of 15,750 performance-based restricted stock units into Common Stock and the withholding of 6,444 shares to satisfy tax obligations. These are compensation-related events rather than open-market purchases or sales, reflecting routine equity award vesting.

How many Willdan Group (WLDN) shares does the CEO hold after this Form 4?

After these transactions, Michael Bieber directly holds 249,525 shares of Willdan Group Common Stock. This reflects his position following the vesting of performance-based restricted stock units and the company’s withholding of 6,444 shares to cover associated tax obligations.

Were Michael Bieber’s Willdan Group (WLDN) transactions open-market buys or sells?

The filing shows no open-market buys or sells. Shares were acquired through vesting of 15,750 performance-based restricted stock units and 6,444 shares were withheld by the company for tax obligations, a non-market disposition typical of equity award vesting events.

What performance-based awards vested for Willdan Group (WLDN) CEO Michael Bieber?

Performance-based restricted stock units granted on March 20, 2024 vested into 15,750 shares after the Compensation Committee determined performance conditions were satisfied on March 25, 2026. This conversion from units to shares represents compensation earned under the company’s performance-based equity program.

What unvested equity awards does the Willdan Group (WLDN) CEO still have?

The filing notes remaining unvested restricted stock units of 18,000 shares vesting in three installments in 2027–2029, 12,834 shares vesting in two installments in 2027–2028, and 5,834 shares vesting in 2027, contingent on continued service with the company.

How many Willdan Group (WLDN) shares were withheld for the CEO’s taxes?

The company withheld 6,444 shares of Common Stock, valued at $82.80 per share, to satisfy Michael Bieber’s tax withholding obligations related to the vesting of his 15,750 performance-based restricted stock units. This is a standard, non-market tax-settlement mechanism.

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Accepted by SEC EDGAR 03/26/2026 - 06:16 PM

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

CALIFORNIA

92806

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/25/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	03/25/2026		A		15,750⁽¹⁾	A	$0	255,969⁽²⁾	D
Common Stock	03/25/2026		F		6,444⁽³⁾	D	$82.8	249,525⁽²⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 20, 2024. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee effective on March 25, 2026, resulting in the immediate vesting of the restricted stock units as to 15,750 shares of Common Stock.

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) 12,834 shares of restricted stock units that vest in two substantially equal installments on each of March 17, 2027 and March 17, 2028, and (iii) 5,834 shares of restricted stock units that vest on March 20, 2027, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

3. Represents shares of the Issuer's Common Stock withheld to satisfy tax withholding obligations in connection with the vesting of the performance-based restricted stock units referenced in footnote (1).

	/s/ Creighton K. Early, Attorney-in-fact for Michael A. Bieber	03/26/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR