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BIEBER MICHAEL A

Disclosed activity across 1 company

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46860
SEC CIK
0001270606

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Willdan Group, Inc.WLDN · Entity 4758Director · PRESIDENT AND CEOMay 14, 2026May 15, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Willdan Group, Inc.

Report date May 14, 2026 · Filed May 15, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect249,525 Last balance in matching sequence After 2026-05-14 transaction · row 6 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
6 source rows

Row 1 · 2026-05-14 · Exercise / conversion · Acquired 40,009 · Balance 289,534

F1: 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.

Row 2 · 2026-05-14 · Exercise / conversion · Acquired 16,667 · Balance 306,201

F1: 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.

Row 3 · 2026-05-14 · Sale · Disposed 25,429 · Balance 280,772

F2: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $90.50 to $91.46, inclusive. The Reporting Person undertakes to provide to Willdan Group, Inc., any security holder of Willdan Group, Inc., 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), footnote (3), footnote (4), and footnote (5).

F1: 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.

Row 4 · 2026-05-14 · Sale · Disposed 23,015 · Balance 257,757

F3: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $91.50 to $92.49, inclusive.

F1: 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.

Row 5 · 2026-05-14 · Sale · Disposed 7,956 · Balance 249,801

F4: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $92.50 to $93.41, inclusive.

F1: 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.

Row 6 · 2026-05-14 · Sale · Disposed 276 · Balance 249,525

F5: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $93.62 to $93.99, inclusive.

F1: 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.

Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $16.27 · Expires 2026-11-03Direct0 Reported balance After 2026-05-14 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2026-05-14 · Exercise / conversion · Disposed 40,009 · Balance 0

F6: 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.

Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $28.19 · Expires 2027-03-08Direct0 Reported balance After 2026-05-14 transaction · row 8 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 8 · 2026-05-14 · Exercise / conversion · Disposed 16,667 · Balance 0

F7: Stock options granted under the Willdan Group, Inc. Amended and Restated 2008 Performance Incentive Plan, which vested in three equal installments on each of March 8, 2018, March 8, 2019, and March 8, 2020.

Filing footnotes · ownership attribution and instrument terms

F1: 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.

F2: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $90.50 to $91.46, inclusive. The Reporting Person undertakes to provide to Willdan Group, Inc., any security holder of Willdan Group, Inc., 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), footnote (3), footnote (4), and footnote (5).

F3: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $91.50 to $92.49, inclusive.

F4: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $92.50 to $93.41, inclusive.

F5: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $93.62 to $93.99, inclusive.

F6: 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.

F7: Stock options granted under the Willdan Group, Inc. Amended and Restated 2008 Performance Incentive Plan, which vested in three equal installments on each of March 8, 2018, March 8, 2019, and March 8, 2020.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
August 07, 2024 Filed Aug 8, 2024 21:36 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionStock Options (Right to Buy) · Derivative 10,346 $0.00 Strike: $13.49 $0.00
Disclosure

SEC source: 0001415889-24-020997 · form4-08082024_090803.xml · derivative · entry 6

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,904

Underlying: Common Stock · 10,346 shares

Expires 2024-12-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_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 December 31, 2015, December 31, 2016 and December 31, 2017.

Read SEC document
August 07, 2024 Filed Aug 8, 2024 21:36 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 10,346 $36.61 $378,767.06
Disclosure

SEC source: 0001415889-24-020997 · form4-08082024_090803.xml · nonDerivative · entry 4

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,726

F4 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $36.45 to $37.40, inclusive. The Reporting Person undertakes to provide to Willdan Group, Inc., any security holder of Willdan Group, Inc., 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.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

F2 · balance_after: Includes 683 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on June 30, 2024.

Read SEC document
August 07, 2024 Filed Aug 8, 2024 21:36 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionCommon Stock 10,346 $13.49 $139,567.54
Disclosure

SEC source: 0001415889-24-020997 · form4-08082024_090803.xml · nonDerivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,072

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

F2 · balance_after: Includes 683 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on June 30, 2024.

Read SEC document
August 06, 2024 Filed Aug 8, 2024 21:36 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionStock Options (Right to Buy) · Derivative 12,000 $0.00 Strike: $13.49 $0.00
Disclosure

SEC source: 0001415889-24-020997 · form4-08082024_090803.xml · derivative · entry 5

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,250

Underlying: Common Stock · 12,000 shares

Expires 2024-12-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_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 December 31, 2015, December 31, 2016 and December 31, 2017.

Read SEC document
August 06, 2024 Filed Aug 8, 2024 21:36 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 12,000 $36.58 $438,960.00
Disclosure

SEC source: 0001415889-24-020997 · form4-08082024_090803.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,726

F3 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $36.45 to $36.84, inclusive. The Reporting Person undertakes to provide to Willdan Group, Inc., any security holder of Willdan Group, Inc., 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.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

F2 · balance_after: Includes 683 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on June 30, 2024.

Read SEC document
August 06, 2024 Filed Aug 8, 2024 21:36 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionCommon Stock 12,000 $13.49 $161,880.00
Disclosure

SEC source: 0001415889-24-020997 · form4-08082024_090803.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,726

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

F2 · balance_after: Includes 683 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on June 30, 2024.

Read SEC document
June 13, 2024 Filed Jun 14, 2024 21:31 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionStock Options (Right to Buy) · Derivative 6,000 $0.00 Strike: $13.49 $0.00
Disclosure

SEC source: 0001415889-24-016978 · form4-06142024_090653.xml · derivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,250

Underlying: Common Stock · 6,000 shares

Expires 2024-12-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_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 December 31, 2015, December 31, 2016 and December 31, 2017.

Read SEC document
June 13, 2024 Filed Jun 14, 2024 21:31 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 4,460 $30.32 $135,227.20
Disclosure

SEC source: 0001415889-24-016978 · form4-06142024_090653.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,043

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $30.30 to $30.44, inclusive. The Reporting Person undertakes to provide to Willdan Group, Inc., any security holder of Willdan Group, Inc., 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.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
June 13, 2024 Filed Jun 14, 2024 21:31 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionCommon Stock 6,000 $13.49 $80,940.00
Disclosure

SEC source: 0001415889-24-016978 · form4-06142024_090653.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 173,503

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
June 12, 2024 Filed Jun 13, 2024 22:13 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionStock Options (Right to Buy) · Derivative 6,000 $0.00 Strike: $13.49 $0.00
Disclosure

SEC source: 0001415889-24-016725 · form4-06132024_100603.xml · derivative · entry 6

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,250

Underlying: Common Stock · 6,000 shares

Expires 2024-12-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_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 December 31, 2015, December 31, 2016 and December 31, 2017.

Read SEC document
June 12, 2024 Filed Jun 13, 2024 22:13 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 4,394 $30.98 $136,126.12
Disclosure

SEC source: 0001415889-24-016725 · form4-06132024_100603.xml · nonDerivative · entry 4

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 167,503

F3 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $30.64 to $31.28, inclusive. The Reporting Person undertakes to provide to Willdan Group, Inc., any security holder of Willdan Group, Inc., 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.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
June 12, 2024 Filed Jun 13, 2024 22:13 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionCommon Stock 6,000 $13.49 $80,940.00
Disclosure

SEC source: 0001415889-24-016725 · form4-06132024_100603.xml · nonDerivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 171,897

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
June 11, 2024 Filed Jun 13, 2024 22:13 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionStock Options (Right to Buy) · Derivative 6,000 $0.00 Strike: $13.49 $0.00
Disclosure

SEC source: 0001415889-24-016725 · form4-06132024_100603.xml · derivative · entry 5

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,250

Underlying: Common Stock · 6,000 shares

Expires 2024-12-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_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 December 31, 2015, December 31, 2016 and December 31, 2017.

Read SEC document
June 11, 2024 Filed Jun 13, 2024 22:13 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 4,464 $30.25 $135,036.00
Disclosure

SEC source: 0001415889-24-016725 · form4-06132024_100603.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 165,897

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $30.20 to $30.41, inclusive. The Reporting Person undertakes to provide to Willdan Group, Inc., any security holder of Willdan Group, Inc., 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.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
June 11, 2024 Filed Jun 13, 2024 22:13 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionCommon Stock 6,000 $13.49 $80,940.00
Disclosure

SEC source: 0001415889-24-016725 · form4-06132024_100603.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 170,361

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
June 10, 2024 Filed Jun 12, 2024 21:50 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionStock Options (Right to Buy) · Derivative 4,514 $0.00 Strike: $13.49 $0.00
Disclosure

SEC source: 0001415889-24-016535 · form4-06122024_090613.xml · derivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,250

Underlying: Common Stock · 4,514 shares

Expires 2024-12-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_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 December 31, 2015, December 31, 2016 and December 31, 2017.

Read SEC document
June 10, 2024 Filed Jun 12, 2024 21:50 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 3,333 $31.03 $103,422.99
Disclosure

SEC source: 0001415889-24-016535 · form4-06122024_090613.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 164,361

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $31.00 to $31.12, inclusive. The Reporting Person undertakes to provide to Willdan Group, Inc., any security holder of Willdan Group, Inc., 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.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
June 10, 2024 Filed Jun 12, 2024 21:50 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionCommon Stock 4,514 $13.49 $60,893.86
Disclosure

SEC source: 0001415889-24-016535 · form4-06122024_090613.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 167,694

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 20, 2024 Filed Mar 22, 2024 21:33 UTC Willdan Group, Inc. WLDN · Entity 4758 Tax withholdingCommon Stock 5,303 $27.55 $146,097.65
Disclosure

SEC source: 0001415889-24-009000 · form4-03222024_090308.xml · nonDerivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,180

F4 · shares: 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 (3).

F2 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

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March 20, 2024 Filed Mar 22, 2024 21:33 UTC Willdan Group, Inc. WLDN · Entity 4758 GrantCommon Stock 11,970 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-009000 · form4-03222024_090308.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 168,483

F3 · shares: Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 7, 2023. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee on March 20, 2024, resulting in the immediate vesting of the restricted stock units as to 11,970 shares of Common Stock.

F2 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

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March 20, 2024 Filed Mar 22, 2024 21:33 UTC Willdan Group, Inc. WLDN · Entity 4758 GrantCommon Stock 17,500 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-009000 · form4-03222024_090308.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,513

F1 · shares: Represents shares of restricted stock units awarded to the Reporting Person by the Issuer on March 20, 2024, which vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

F2 · balance_after: Includes (i) 17,500 shares of restricted stock units that vest in three substantially equal installments on each of March 20, 2025, March 20, 2026 and March 20, 2027 and (ii) 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

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March 07, 2024 Filed Mar 11, 2024 22:15 UTC Willdan Group, Inc. WLDN · Entity 4758 Tax withholdingCommon Stock 2,201 $19.85 $43,689.85
Disclosure

SEC source: 0001415889-24-007548 · form4-03112024_100307.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · Director · PRESIDENT AND CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,013

F1 · shares: Represents shares of the Issuer's Common Stock withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock on March 7, 2024, which restricted stock was granted on March 7, 2023.

F2 · balance_after: Includes 538 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on December 31, 2023.

F3 · balance_after: Includes 8,867 shares of restricted stock that vest in two substantially equal installments on each of March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 24, 2023 Filed Aug 28, 2023 22:17 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 62 $24.70 $1,531.40
Disclosure

SEC source: 0001415889-23-012722 · form4-08282023_100808.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,676

F1 · shares: Represents shares of Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of the performance-based restricted stock units on August 21, 2023.

F4 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $24.68 to $24.75, inclusive.

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 24, 2023 Filed Aug 28, 2023 22:17 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 964 $24.34 $23,463.76
Disclosure

SEC source: 0001415889-23-012722 · form4-08282023_100808.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,738

F1 · shares: Represents shares of Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of the performance-based restricted stock units on August 21, 2023.

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $23.67 to $24.65, 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) and footnote (4).

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 23, 2023 Filed Aug 24, 2023 21:42 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 499 $23.81 $11,881.19
Disclosure

SEC source: 0001415889-23-012618 · form4-08242023_090826.xml · nonDerivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,702

F1 · shares: Represents shares of Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of the performance-based restricted stock units on August 21, 2023.

F5 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $23.65 to $24.15, inclusive.

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 23, 2023 Filed Aug 24, 2023 21:42 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 671 $23.29 $15,627.59
Disclosure

SEC source: 0001415889-23-012618 · form4-08242023_090826.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 142,201

F1 · shares: Represents shares of Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of the performance-based restricted stock units on August 21, 2023.

F4 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $22.65 to $23.64, inclusive.

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 22, 2023 Filed Aug 24, 2023 21:42 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 1,216 $22.82 $27,749.12
Disclosure

SEC source: 0001415889-23-012618 · form4-08242023_090826.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 142,872

F1 · shares: Represents shares of Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of the performance-based restricted stock units on August 21, 2023.

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $22.60 to $23.09, 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), footnote (4) and footnote (5).

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 21, 2023 Filed Aug 22, 2023 22:15 UTC Willdan Group, Inc. WLDN · Entity 4758 GrantCommon Stock 8,246 $0.00 $0.00
Disclosure

SEC source: 0001415889-23-012518 · form4-08222023_100803.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 144,088

F1 · shares: Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on August 2, 2022. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee on August 21, 2023, resulting in the immediate vesting of the restricted stock units as to 8,246 shares of Common Stock.

F2 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

F3 · balance_after: Includes 823 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on June 30, 2023.

Read SEC document
March 13, 2023 Filed Mar 15, 2023 00:14 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 1,094 $16.77 $18,346.38
Disclosure

SEC source: 0001415889-23-004911 · form4-03152023_120310.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 135,019

F1 · shares: Represents shares of the Issuer's Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of restricted stock on March 8, 2023, which restricted stock was granted on March 8, 2022.

F4 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $16.54 to $17.04, inclusive.

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 13, 2023 Filed Mar 15, 2023 00:14 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 1,758 $16.15 $28,391.70
Disclosure

SEC source: 0001415889-23-004911 · form4-03152023_120310.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 136,113

F1 · shares: Represents shares of the Issuer's Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of restricted stock on March 8, 2023, which restricted stock was granted on March 8, 2022.

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $15.53 to $16.52, 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) and footnote (4).

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 10, 2023 Filed Mar 13, 2023 22:54 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 257 $16.96 $4,358.72
Disclosure

SEC source: 0001415889-23-004815 · form4-03132023_100305.xml · nonDerivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 137,871

F1 · shares: Represents shares of the Issuer's Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of restricted stock on March 8, 2023, which restricted stock was granted on March 8, 2022.

F5 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $16.60 to $17.00, inclusive.

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 10, 2023 Filed Mar 13, 2023 22:54 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 1,159 $15.78 $18,289.02
Disclosure

SEC source: 0001415889-23-004815 · form4-03132023_100305.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 138,128

F1 · shares: Represents shares of the Issuer's Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of restricted stock on March 8, 2023, which restricted stock was granted on March 8, 2022.

F4 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $15.56 to $16.53, inclusive.

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 10, 2023 Filed Mar 13, 2023 22:54 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 1,306 $15.21 $19,864.26
Disclosure

SEC source: 0001415889-23-004815 · form4-03132023_100305.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 139,287

F1 · shares: Represents shares of the Issuer's Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of restricted stock on March 8, 2023, which restricted stock was granted on March 8, 2022.

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $14.55 to $15.53, 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), footnote (4) and footnote (5).

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 09, 2023 Filed Mar 10, 2023 23:07 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 2,932 $17.03 $49,931.96
Disclosure

SEC source: 0001415889-23-004688 · form4-03102023_110331.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,593

F1 · shares: Represents shares of the Issuer's Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of restricted stock on March 8, 2023, which restricted stock was granted on March 8, 2022.

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $16.90 to $17.35, 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 range set forth in this footnote.

F3 · balance_after: Includes 13,300 shares of restricted stock that vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 07, 2023 Filed Mar 8, 2023 23:39 UTC Willdan Group, Inc. WLDN · Entity 4758 GrantCommon Stock 13,300 $0.00 $0.00
Disclosure

SEC source: 0001415889-23-004538 · form4-03082023_110353.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 143,525

F1 · shares: Represents shares of restricted stock awarded to the Reporting Person by the Issuer on March 7, 2023, which vest in three substantially equal installments on each of March 7, 2024, March 7, 2025 and March 7, 2026, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

F2 · balance_after: Includes 238 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on December 31, 2022.

Read SEC document
August 10, 2022 Filed Aug 12, 2022 22:03 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionStock Options (Right to Buy) · Derivative 24,666 $0.00 Strike: $9.13 $0.00
Disclosure

SEC source: 0001415889-22-008569 · form4-08122022_030842.xml · derivative · entry 4

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 24,666 shares

Expires 2026-03-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_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 March 10, 2017, March 10, 2018 and March 10, 2019.

Read SEC document
August 10, 2022 Filed Aug 12, 2022 22:03 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 2,611 $27.60 $72,063.60
Disclosure

SEC source: 0001415889-22-008569 · form4-08122022_030842.xml · nonDerivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,987

F3 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $27.34 to $27.90, inclusive.

F1 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 10, 2022 Filed Aug 12, 2022 22:03 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 24,666 $27.66 $682,261.56
Disclosure

SEC source: 0001415889-22-008569 · form4-08122022_030842.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,598

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $27.34 to $28.03, 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) and footnote (3).

F1 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 10, 2022 Filed Aug 12, 2022 22:03 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionCommon Stock 24,666 $9.13 $225,200.58
Disclosure

SEC source: 0001415889-22-008569 · form4-08122022_030842.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,264

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 09, 2022 Filed Aug 11, 2022 22:01 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionStock Options (Right to Buy) · Derivative 334 $0.00 Strike: $9.13 $0.00
Disclosure

SEC source: 0001415889-22-008507 · form4-08112022_030856.xml · derivative · entry 4

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,666

Underlying: Common Stock · 334 shares

Expires 2026-03-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_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 March 10, 2017, March 10, 2018 and March 10, 2019.

Read SEC document
August 09, 2022 Filed Aug 11, 2022 22:01 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 122 $28.00 $3,416.00
Disclosure

SEC source: 0001415889-22-008507 · form4-08112022_030856.xml · nonDerivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,598

F1 · balance_after: Includes 533 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on June 30, 2022.

F2 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 09, 2022 Filed Aug 11, 2022 22:01 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 334 $28.00 $9,352.00
Disclosure

SEC source: 0001415889-22-008507 · form4-08112022_030856.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,720

F1 · balance_after: Includes 533 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on June 30, 2022.

F2 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
August 09, 2022 Filed Aug 11, 2022 22:01 UTC Willdan Group, Inc. WLDN · Entity 4758 Exercise / conversionCommon Stock 334 $9.13 $3,049.42
Disclosure

SEC source: 0001415889-22-008507 · form4-08112022_030856.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 133,054

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Includes 533 shares of Common Stock purchased under the Amended and Restated Willdan Group, Inc. 2006 Employee Stock Purchase Plan on June 30, 2022.

F2 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 28, 2022 Filed Mar 30, 2022 21:37 UTC Willdan Group, Inc. WLDN · Entity 4758 Tax withholdingCommon Stock 3,562 $30.84 $109,852.08
Disclosure

SEC source: 0001415889-22-003484 · form4-03302022_020337.xml · nonDerivative · entry 4

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,187

F5 · shares: Represents shares of the Issuer's Common Stock withheld for tax withholding purposes in connection with the vesting of the performance-based restricted stock units referenced in footnote (3).

F2 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 28, 2022 Filed Mar 30, 2022 21:37 UTC Willdan Group, Inc. WLDN · Entity 4758 Tax withholdingCommon Stock 3,272 $30.84 $100,908.48
Disclosure

SEC source: 0001415889-22-003484 · form4-03302022_020337.xml · nonDerivative · entry 3

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 135,749

F4 · shares: Represents shares of the Issuer's Common Stock withheld for tax withholding purposes in connection with the vesting of the performance-based restricted stock units referenced in footnote (1).

F2 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 28, 2022 Filed Mar 30, 2022 21:37 UTC Willdan Group, Inc. WLDN · Entity 4758 GrantCommon Stock 6,802 $0.00 $0.00
Disclosure

SEC source: 0001415889-22-003484 · form4-03302022_020337.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 139,021

F3 · shares: Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 2, 2020. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee on March 28, 2022, resulting in the immediate vesting of the restricted stock units as to 6,802 shares of Common Stock.

F2 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

Read SEC document
March 28, 2022 Filed Mar 30, 2022 21:37 UTC Willdan Group, Inc. WLDN · Entity 4758 GrantCommon Stock 6,249 $0.00 $0.00
Disclosure

SEC source: 0001415889-22-003484 · form4-03302022_020337.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,219

F1 · shares: Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 6, 2018. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee on March 28, 2022, resulting in the immediate vesting of the restricted stock units as to 6,249 shares of Common Stock.

F2 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

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March 15, 2022 Filed Mar 17, 2022 23:19 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 23,242 $28.19 $655,191.98
Disclosure

SEC source: 0001415889-22-003147 · form4-03172022_040331.xml · nonDerivative · entry 2

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 125,970

F1 · shares: Represents shares of Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of the performance-based restricted stock units on March 14, 2022.

F3 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

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March 15, 2022 Filed Mar 17, 2022 23:19 UTC Willdan Group, Inc. WLDN · Entity 4758 SaleCommon Stock 2,160 $26.44 $57,110.40
Disclosure

SEC source: 0001415889-22-003147 · form4-03172022_040331.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 149,212

F1 · shares: Represents shares of Common Stock sold in the open market, the proceeds of which were used to pay the tax withholding obligations incurred upon the vesting of the performance-based restricted stock units on March 14, 2022.

F2 · price: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $26.43 to $27.10, 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.

F3 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

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March 14, 2022 Filed Mar 16, 2022 23:15 UTC Willdan Group, Inc. WLDN · Entity 4758 GrantCommon Stock 43,466 $0.00 $0.00
Disclosure

SEC source: 0001415889-22-003078 · form4-03162022_040347.xml · nonDerivative · entry 1

BIEBER MICHAEL A · CIK 0001270606 · PRESIDENT

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,372

F1 · shares: Represents performance-based restricted stock units previously granted to the Reporting Person by the Issuer on March 9, 2021. The performance conditions applicable to the award were determined to have been satisfied by the Issuer's Compensation Committee on March 14, 2022, resulting in the immediate vesting of the restricted stock units as to 43,466 shares of Common Stock.

F2 · balance_after: Includes 18,051 shares of restricted stock that vest in one installment on March 8, 2023, subject to the Reporting Person's continued service to the Issuer through the applicable vesting date.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.