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Willdan director sells 58,757 shares after option exercise

A Willdan Group director exercised options and sold 58,757 shares in same-day transactions at a weighted average price of $88.14 per share.

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Willdan Group, Inc. (WLDN) director Thomas Donald Brisbin exercised stock options for 58,727 shares of common stock on September 3, 2026 at an exercise price of $16.27 per share under the company’s Amended and Restated 2008 Performance Incentive Plan. He then sold 58,757 shares of common stock the same day at a weighted average price of $88.14 per share, in multiple transactions between $88.05 and $88.49. Following the option exercise, 30,979 stock options of this grant remain outstanding, and his direct holdings of common stock include 1,241 shares of restricted stock scheduled to vest on June 17, 2027. No Rule 10b5-1 trading plan is reported for these transactions.

Positive

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Negative

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Insider Brisbin Thomas Donald
Role Director
Sold 58,757 shs ($5.18M)
Approx. gross sale proceeds $5.18M
Approx. exercise cost $955K
Type Security Shares Price Value
Exercise Stock Options (Right to Buy) F3 58,727 $0.00 $0.00
Exercise Common Stock F1 58,757 $16.27 $956K
Sale Common Stock F2, F1 58,757 $88.14 $5.18M
Holdings After Transaction: Stock Options (Right to Buy) — 30,979 contracts (Direct); Common Stock — 96,687 shares (Direct)
Footnotes (3)
  1. F1. Includes 1,241 shares of restricted stock that vest on June 17, 2027.
  2. F2. The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $88.05 to $88.49, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2).
  3. F3. Stock options granted under the Willdan Group, Inc. Amended and Restated 2008 Performance Incentive Plan, which vested in three equal installments on each of November 3, 2017, November 3, 2018 and November 3, 2019.
Options exercised 58,727 shares Stock options for Willdan Group, Inc. common stock exercised on September 3, 2026
Option exercise price $16.27 per share Exercise price of stock options converted into common stock
Shares sold 58,757 shares Common stock sold on September 3, 2026
Weighted average sale price $88.14 per share Weighted average price for multiple sale transactions between $88.05 and $88.49
Remaining options from this grant 30,979 options Stock options remaining outstanding after the reported exercise
Restricted stock vesting 1,241 shares Restricted stock included in direct holdings, vesting on June 17, 2027
Option expiration date November 3, 2026 Expiration date of the exercised stock options
weighted average price financial
"The price reported in Column 4 is the weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
restricted stock financial
"Includes 1,241 shares of restricted stock that vest on June 17, 2027."
Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.
Amended and Restated 2008 Performance Incentive Plan financial
"Stock options granted under the Willdan Group, Inc. Amended and Restated 2008 Performance Incentive Plan"

FAQ

What insider transactions did WLDN director Thomas Donald Brisbin report on September 3, 2026?
He exercised 58,727 stock options for Willdan Group, Inc. common stock at $16.27 per share and sold 58,757 shares of common stock the same day at a weighted average price of $88.14 per share.

At what prices were the WLDN shares sold in Thomas Brisbin’s Form 4 filing?
The reported weighted average sale price was $88.14 per share. The filing states that the shares were sold in multiple transactions at prices ranging from $88.05 to $88.49 per share.

How many stock options did Thomas Brisbin exercise in Willdan Group (WLDN)?
He exercised 58,727 stock options for Willdan Group, Inc. common stock at an exercise price of $16.27 per share. These options were granted under the Amended and Restated 2008 Performance Incentive Plan and were scheduled to expire on November 3, 2026.

What Willdan Group (WLDN) equity awards remain after Thomas Brisbin’s reported transactions?
The filing reports 30,979 stock options from this grant remaining outstanding after the exercise, and his direct common stock holdings include 1,241 shares of restricted stock that are scheduled to vest on June 17, 2027.

Were Thomas Brisbin’s WLDN trades made under a Rule 10b5-1 trading plan?
The Rule 10b5-1 checkbox is not affirmatively marked, and no footnote describes a trading plan. The filing therefore indicates that no Rule 10b5-1 trading plan is reported for these transactions.

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SEC Form 4
FORM 4UNITED 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*
Brisbin Thomas Donald
(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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/03/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock09/03/2026M58,757A$16.27155,444(1)D
Common Stock09/03/2026S58,757D$88.14(2)96,687(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options (Right to Buy)$16.2709/03/2026M58,72711/03/2017(3)11/03/2026Common Stock58,727$030,979D
Explanation of Responses:
1. Includes 1,241 shares of restricted stock that vest on June 17, 2027.
2. The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $88.05 to $88.49, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2).
3. Stock options granted under the Willdan Group, Inc. Amended and Restated 2008 Performance Incentive Plan, which vested in three equal installments on each of November 3, 2017, November 3, 2018 and November 3, 2019.
/s/ Creighton K. Early, Attorney-in-Fact for Thomas D. Brisbin09/04/2026
** Signature of Reporting PersonDate
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