Willdan Group, Inc.

WLDNNASDAQIndustrials● Active

$97.97

+$0.76(+0.78%)

Market Cap$1.5B

P/E Ratio—

52W High$137

52W Low$55

Avg Volume379K

Open$97.60

Beta1.11

Insider Trades Ownership Employees

Willdan Group, Inc. (WLDN) Insider Trading

Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.

SEC EDGAR · FMP · WLDN · as of Jun 8, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

0.00

Buy/Sell (by trades)

Overall sentiment

BEARISH

↑ Buy 0%Active transactions only · RSU vesting excluded100% Sell ↓

Willdan Group, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 8, 2026

WLDN insider buying and selling by quarter

WLDN insider selling · WLDN insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

497K249K0

2024 Q2

2024 Q3

2024 Q4

2025 Q1

2025 Q2

2025 Q3

2026 Q1

2026 Q2

Mobile shows last 4Q · Desktop shows full 8Q

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters

As of Jun 8, 2026

Active insiders

Most active in past 12 months · WLDN ceo insider trading

Showing all insiders · Click a card to filter the transactions table below

▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API

Recent insider transactions

WLDN executive sell shares · WLDN board member insider trading · WLDN insider trading SEC filing

Showing 90 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
May 14, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Option	16,667	$28.19	$470K	306,201	Form 4
May 14, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Option	40,009	$16.27	$651K	289,534	Form 4
May 14, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Sale	25,429	$90.88	$2.31M⚡	280,772	Form 4
May 14, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Sale	23,015	$91.95	$2.12M⚡	257,757	Form 4
May 14, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Sale	7,956	$92.65	$737K	249,801	Form 4
May 14, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Sale	276	$93.74	$26K	249,525	Form 4
May 13, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Option	9,991	$16.27	$163K	259,516	Form 4
May 13, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Sale	9,991	$92.65	$926K	249,525	Form 4
Mar 25, 2026	CHEN MICAH EXECUTIVE VP & GENERAL COUNSEL	Award	3,780	—	—	51,710	Form 4
Mar 25, 2026	CHEN MICAH EXECUTIVE VP & GENERAL COUNSEL	Other	1,660	$82.80	$137K	50,050	Form 4
Mar 25, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Award	15,750	—	—	255,969	Form 4
Mar 25, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Other	6,444	$82.80	$534K	249,525	Form 4
Mar 25, 2026	EARLY CREIGHTON K EXECUTIVE VP AND CFO	Award	3,780	—	—	80,806	Form 4
Mar 25, 2026	EARLY CREIGHTON K EXECUTIVE VP AND CFO	Other	2,142	$82.80	$177K	78,664	Form 4
Mar 20, 2026	CHEN MICAH EXECUTIVE VP & GENERAL COUNSEL	Other	615	$75.52	$46K	47,930	Form 4
Mar 20, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Other	2,387	$75.52	$180K	240,219	Form 4
Mar 20, 2026	EARLY CREIGHTON K EXECUTIVE VP AND CFO	Other	794	$75.52	$60K	77,026	Form 4
Mar 17, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Other	2,625	$78.29	$206K	242,606	Form 4
Mar 17, 2026	CHEN MICAH EXECUTIVE VP & GENERAL COUNSEL	Other	676	$78.29	$53K	48,545	Form 4
Mar 17, 2026	EARLY CREIGHTON K EXECUTIVE VP AND CFO	Other	873	$78.29	$68K	77,820	Form 4
Mar 16, 2026	CHEN MICAH EXECUTIVE VP & GENERAL COUNSEL	Award	4,158	—	—	51,047	Form 4
Mar 16, 2026	CHEN MICAH EXECUTIVE VP & GENERAL COUNSEL	Other	1,826	$78.61	$144K	49,221	Form 4
Mar 16, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Award	17,326	—	—	252,321	Form 4
Mar 16, 2026	BIEBER MICHAEL A PRESIDENT AND CEO · Director	Other	7,090	$78.61	$557K	245,231	Form 4
Mar 16, 2026	EARLY CREIGHTON K EXECUTIVE VP AND CFO	Award	4,158	—	—	81,049	Form 4

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Option

Date

May 14

16,667

Price

$28.19

Value

$470K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Option

Date

May 14

40,009

Price

$16.27

Value

$651K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Sale

Date

May 14

25,429

Price

$90.88

Value

$2.31M ⚡

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Sale

Date

May 14

23,015

Price

$91.95

Value

$2.12M ⚡

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Sale

Date

May 14

7,956

Price

$92.65

Value

$737K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Sale

Date

May 14

276

Price

$93.74

Value

$26K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Option

Date

May 13

9,991

Price

$16.27

Value

$163K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Sale

Date

May 13

9,991

Price

$92.65

Value

$926K

View Form 4 on SEC.gov

CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Award

Date

Mar 25

3,780

Price

—

Value

—

View Form 4 on SEC.gov

CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Other

Date

Mar 25

1,660

Price

$82.80

Value

$137K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Award

Date

Mar 25

15,750

Price

—

Value

—

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Other

Date

Mar 25

6,444

Price

$82.80

Value

$534K

View Form 4 on SEC.gov

EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Award

Date

Mar 25

3,780

Price

—

Value

—

View Form 4 on SEC.gov

EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Other

Date

Mar 25

2,142

Price

$82.80

Value

$177K

View Form 4 on SEC.gov

CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Other

Date

Mar 20

615

Price

$75.52

Value

$46K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Other

Date

Mar 20

2,387

Price

$75.52

Value

$180K

View Form 4 on SEC.gov

EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Other

Date

Mar 20

794

Price

$75.52

Value

$60K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Other

Date

Mar 17

2,625

Price

$78.29

Value

$206K

View Form 4 on SEC.gov

CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Other

Date

Mar 17

676

Price

$78.29

Value

$53K

View Form 4 on SEC.gov

EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Other

Date

Mar 17

873

Price

$78.29

Value

$68K

View Form 4 on SEC.gov

CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Award

Date

Mar 16

4,158

Price

—

Value

—

View Form 4 on SEC.gov

CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Other

Date

Mar 16

1,826

Price

$78.61

Value

$144K

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Award

Date

Mar 16

17,326

Price

—

Value

—

View Form 4 on SEC.gov

BIEBER MICHAEL A

PRESIDENT AND CEO · Director

Other

Date

Mar 16

7,090

Price

$78.61

Value

$557K

View Form 4 on SEC.gov

EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Award

Date

Mar 16

4,158

Price

—

Value

—

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

1 / 4

▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About WLDN insider trading

WLDN insider trades

Willdan Group, Inc. (WLDN) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Brisbin Thomas Donald (Director), BIEBER MICHAEL A (PRESIDENT AND CEO · Director), CHEN MICAH (EXECUTIVE VP & GENERAL COUNSEL). Over the past 12 months, 5 insiders have filed transactions with the SEC. WLDN insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Willdan Group, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

WLDN insider trading · 5 questions

The insiders of Willdan Group, Inc. (WLDN) include executives and directors such as Brisbin Thomas Donald (Director), BIEBER MICHAEL A (PRESIDENT AND CEO · Director), CHEN MICAH (EXECUTIVE VP & GENERAL COUNSEL), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.

WLDN board member insider tradingwho are WLDN insidersWLDN insider rosterWilldan Group, Inc. executives insider activity

▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026