Micah Chen - Sep 18, 2025 Form 4 Insider Report for Willdan Group, Inc. (WLDN)

Role: EXECUTIVE VP & GENERAL COUNSEL
Signature: /s/ Creighton K. Early, Attorney-in-fact for Micah Chen
Stock symbol: WLDN
Transactions as of: Sep 18, 2025
Transactions value $: -$732,100
Form type: 4
Date filed: 9/22/2025, 05:44 PM
Previous filing: Aug 20, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
CHEN MICAH	EXECUTIVE VP & GENERAL COUNSEL	2401 EAST KATELLA AVENUE, SUITE 300, ANAHEIM	/s/ Creighton K. Early, Attorney-in-fact for Micah Chen	2025-09-22	0001733678

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WLDN	Common Stock	Options Exercise	$328K	+10K	+24.74%	$32.79	50.4K	Sep 18, 2025	Direct	F1
transaction	WLDN	Common Stock	Sale	-$1.06M	-10K	-19.83%	$106.00	40.4K	Sep 18, 2025	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WLDN	Stock Options (Right to Buy)	Options Exercise	$0	-10K	-20%	$0.00	40K	Sep 18, 2025	Common Stock	10K	$32.79	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes (i) 4,620 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, (ii) 2,800 shares of restricted stock units that vest in two substantially equal installments on each of March 20, 2026 and March 20, 2027 and (iii) 934 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.
F2	Stock options granted under the Willdan Group, Inc. Amended and Restated 2008 Performance Incentive Plan, which vested in three equal installments on each of July 17, 2018, July 17, 2019, and July 17, 2020.

Content

Includes (i) 4,620 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, (ii) 2,800 shares of restricted stock units that vest in two substantially equal installments on each of March 20, 2026 and March 20, 2027 and (iii) 934 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.

Stock options granted under the Willdan Group, Inc. Amended and Restated 2008 Performance Incentive Plan, which vested in three equal installments on each of July 17, 2018, July 17, 2019, and July 17, 2020.