[Form 4] Willdan Group, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Wanda Kay Reder, a director of Willdan Group, Inc. (WLDN), reported a sale of 850 shares of the company’s common stock on 08/14/2025 at a price of $119.46 per share. After this sale the reporting person beneficially owns 10,676 shares in total. The reported holdings include 1,781 restricted shares that vest on 06/11/2026 and 1,124 restricted shares that vest on 06/12/2026, both subject to continued service through the vesting dates. The Form 4 was submitted by a single reporting person and signed by an attorney-in-fact on behalf of the reporting person.

Positive

• Disclosure compliance with Section 16 is maintained via a timely Form 4 filing
• Retention of substantial holdings—10,676 shares remain beneficially owned, including restricted stock
• Restricted shares identified with clear vesting dates, providing transparency on future ownership changes

Negative

• Sale of 850 shares by a director reduces direct holdings

Insights

Financial Analyst

TL;DR: Director sale of 850 shares is disclosed; remaining holdings include time-vested restricted shares.

The filing documents an open-market or directed sale of 850 common shares at $119.46 each, reducing the reporting person’s direct beneficial ownership to 10,676 shares. The disclosure clarifies that a portion of the holdings are restricted stock with specified vesting dates, which affects the timing of potential future sales. No options, warrants, or other derivative transactions are reported. From a liquidity and ownership perspective, this is a routine insider disclosure showing partial divestiture while retaining vested and unvested equity.

Corporate Governance Expert

TL;DR: Routine Section 16 disclosure; sale is documented and restricted shares remain subject to service-based vesting.

The Form 4 indicates compliance with Section 16 reporting requirements for an insider transaction. The filing identifies the reporting person as a director and provides the nature of indirect holdings via restricted stock awards with explicit vesting dates. There are no amendments, derivative holdings, or joint filers noted. This is a standard governance disclosure without additional governance actions or employment changes disclosed.

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^*

REDER WANDA KAY

(Last) (First) (Middle)

2401 EAST KATELLA

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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/14/2025

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	08/14/2025		S		850	D	$119.46	10,676(1)	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. Includes (i) 1,781 shares of restricted stock that vest on June 11, 2026 and (ii) 1,124 shares of restricted stock that vest on June 12, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

	/s/ Creighton K. Early, Attorney-in-fact for Wanda Kay Reder	08/18/2025
	** 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 transaction did Wanda Kay Reder report on Form 4 for WLDN?

The reporting person disclosed a sale of 850 shares of Willdan Group, Inc. common stock at $119.46 per share on 08/14/2025.

How many Willdan (WLDN) shares does Wanda Kay Reder beneficially own after the transaction?

The Form 4 reports that the reporting person beneficially owns 10,676 shares following the reported sale.

Does the Form 4 show any restricted stock for the reporting person?

Yes. The filing discloses 1,781 restricted shares vesting on 06/11/2026 and 1,124 restricted shares vesting on 06/12/2026, subject to continued service.

Were any derivative securities (options, warrants) reported in this Form 4 for WLDN?

No. Table II for derivative securities contains no reported transactions or holdings in this filing.

Was the Form 4 filed by more than one reporting person or as a group?

No. The filing indicates it was filed by one reporting person rather than jointly.