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Nasdaq · CIK 0001370450

WLDN Willdan Group, Inc.

Insider trading from SEC Form 4. Last filing 26 d ago. Close $75.12 on Oct 9, 2026, +12% from the 52-week low and -44% from the high.

Last 90 days

Net insider value
-$5.9M
more sold than bought
Buys
0
$0 by 0 insiders
Sells
3
$5.9M by 1 insider
Insiders on file
8
with a Form 4 at this company

Price and insider trades, last year

WLDNOct 9, 2026 · close 75.12

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at Willdan Group, Inc., scored.

ScoreInsiderValueHoldingsPrice contextFiled
16WeakThomas Donald Brisbin
director
sell
$389k
4,905 shares
-5%-
14WeakThomas Donald Brisbin
director
sell
$303k
3,439 shares
-3%-
35WeakThomas Donald Brisbin
director
sell
$5.2M
58,757 shares
-38%-
40ModerateMichael A Bieber
PRESIDENT AND CEO
sell
$5.2M
56,676 shares
-19%+100% from low-32% from high
34WeakMichael A Bieber
PRESIDENT AND CEO
sell
$926k
9,991 shares
-4%+99% from low-33% from high
38WeakSteven A Cohen
director
sell
$491k
6,000 shares
-22%+158% from low-39% from high
38WeakMicah Chen
EXECUTIVE VP & GENERAL COUNSEL
sell
$1.1M
10,000 shares
-20%+242% from low-12% from high
55ModerateDennis McGinn V
director
sell
$776k
7,298 shares
-39%+242% from low-12% from high
75NotableThomas Donald Brisbin
director
sell
$13M
117,595 shares
-62%+260% from low-8% from high
35WeakThomas Donald Brisbin
director
sell
$612k
5,182 shares
-7%+276% from low-4% from high
65NotableThomas Donald Brisbin
director
sell
$13M
125,000 shares
-40%+244% from low-12% from high
52ModerateThomas Donald Brisbin
director
sell
$772k
7,405 shares
-2%+234% from low-14% from high
50ModerateThomas Donald Brisbin
director
sell
$14M
130,082 shares
-29%+255% from low-9% from high
49ModerateCynthia Downes
director
sell
$302k
2,763 shares
-24%+266% from low-6% from high
40ModerateWanda Kay Reder
director
sell
$102k
850 shares
-7%+290% from low0% from high
46ModerateCreighton K Early
EXECUTIVE VP AND CFO
sell
$905k
7,764 shares
-10%+283% from low-0% from high
44ModerateSteven A Cohen
director
sell
$291k
2,500 shares
-9%+284% from low0% from high
40ModerateThomas Donald Brisbin
director
sell
$1.2M
22,459 shares
-5%+74% from low0% from high
35WeakCreighton K Early
EXECUTIVE VP AND CFO
sell
$266k
5,000 shares
-6%+75% from low0% from high
24WeakThomas Donald Brisbin
director
sell
$84k
1,626 shares
-0%+67% from low0% from high
29WeakThomas Donald Brisbin
director
sell
$308k
5,915 shares
-1%+66% from low0% from high
38WeakMicah Chen
EXECUTIVE VP & GENERAL COUNSEL
sell
$505k
10,000 shares
-21%+63% from low0% from high
55ModerateMichael A Bieber
PRESIDENT AND CEO
sell
$1.2M
25,000 shares
-11%+57% from low0% from high
40ModerateThomas Donald Brisbin
director
sell
$971k
20,000 shares
-5%+57% from low0% from high
38WeakMicah Chen
EXECUTIVE VP & GENERAL COUNSEL
sell
$482k
10,000 shares
-21%+57% from low0% from high
48ModerateThomas Donald Brisbin
director
sell
$982k
23,100 shares
-5%-
19WeakCreighton K Early
EXECUTIVE VP AND CFO
sell
$198k
4,583 shares
-7%-
36WeakMichael A Bieber
PRESIDENT AND CEO
sell
$496k
10,868 shares
-6%-
19WeakMichael A Bieber
PRESIDENT AND CEO
sell
$83k
1,804 shares
-1%-

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
Aug 25, 2025 THOMAS BRISBIN
Director
5,182
0.04% of outstanding
$612kAug 25, 2025$42M
Aug 18, 2025 THOMAS BRISBIN
Director
5,082
0.03% of outstanding
$571kAug 18, 2025$1.6M
May 28, 2025 CREIGHTON K EARLY
Officer
5,000
0.03% of outstanding
$266kMay 28, 2025none
May 27, 2025 THOMAS BRISBIN
Director
22,459
0.15% of outstanding
$1.2MMay 27, 2025$1.4M
May 20, 2025 Brisbin Thomas Donald
Director
10,000
0.07% of outstanding
$515kMay 20, 2025$971k
May 19, 2025 Brisbin Thomas Donald
Director
20,000
0.14% of outstanding
$1.0MMay 19, 2025$971k
May 16, 2025 BIEBER MICHAEL A
Officer
25,000
0.17% of outstanding
$1.2MMay 16, 2025none
May 16, 2025 CHEN MICAH
Officer
10,000
0.07% of outstanding
$490kMay 16, 2025none
May 15, 2025 CHEN MICAH
Officer
10,000
0.07% of outstanding
$478kMay 15, 2025none
May 13, 2025 Brisbin Thomas Donald
Director
20,000
0.14% of outstanding
$961kMay 13, 2025none
Mar 21, 2025 CHEN MICAH
Officer
20,000
0.14% of outstanding
$900kMar 21, 2025none
Mar 12, 2025 Shahidehpour Mohammad
Director
2,273
0.02% of outstanding
$89kMar 12, 2025none
Dec 6, 2024 EARLY CREIGHTON K
Officer
6,039
0.04% of outstanding
$263kDec 6, 2024none
Nov 12, 2024 BIEBER MICHAEL A
Officer
1,672
0.01% of outstanding
$75kNov 11, 2024$110k
Nov 6, 2024 BIEBER MICHAEL A
Officer
11,000
0.08% of outstanding
$503kNov 6, 2024$1.6M

Transactions

The last 100 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Sep 16, 2026Thomas Donald Brisbin
director
MOption exercise
Common Stock
+22,635$16.27$368k119,32226 d ago
Sep 16, 2026Thomas Donald Brisbin
director
MOption exercise
Stock Options (Right to Buy)derivative
-22,635$0.00$0026 d ago
Sep 15, 2026Thomas Donald Brisbin
director
MOption exercise
Common Stock
+4,905$16.27$80k101,59227 d ago
Sep 15, 2026Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-4,005$79.01$316k97,58727 d ago
Sep 15, 2026Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-900$80.91$73k96,68727 d ago
Sep 15, 2026Thomas Donald Brisbin
director
MOption exercise
Stock Options (Right to Buy)derivative
-4,905$0.00$022,63527 d ago
Sep 8, 2026Thomas Donald Brisbin
director
MOption exercise
Common Stock
+3,439$16.27$56k100,12634 d ago
Sep 8, 2026Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-3,439$88.19$303k96,68734 d ago
Sep 8, 2026Thomas Donald Brisbin
director
MOption exercise
Stock Options (Right to Buy)derivative
-3,439$0.00$027,54034 d ago
Sep 3, 2026Thomas Donald Brisbin
director
MOption exercise
Common Stock
+58,757$16.27$956k155,44439 d ago
Sep 3, 2026Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-58,757$88.14$5.2M96,68739 d ago
Sep 3, 2026Thomas Donald Brisbin
director
MOption exercise
Stock Options (Right to Buy)derivative
-58,727$0.00$030,97939 d ago
Jun 17, 2026Thomas Donald Brisbin
director
AGrant or award
Common Stock
+1,241$0.00$096,687Jun 18, 2026
Jun 17, 2026Steven A Cohen
director
AGrant or award
Common Stock
+1,241$0.00$022,090Jun 18, 2026
May 14, 2026Michael A Bieber
PRESIDENT AND CEO
MOption exercise
Common Stock
+40,009$16.27$651k289,534May 15, 2026
May 14, 2026Michael A Bieber
PRESIDENT AND CEO
MOption exercise
Common Stock
+16,667$28.19$470k306,201May 15, 2026
May 14, 2026Michael A Bieber
PRESIDENT AND CEO
SOpen-market sale
Common Stock
-25,429$90.88$2.3M280,772May 15, 2026
May 14, 2026Michael A Bieber
PRESIDENT AND CEO
SOpen-market sale
Common Stock
-23,015$91.95$2.1M257,757May 15, 2026
May 14, 2026Michael A Bieber
PRESIDENT AND CEO
SOpen-market sale
Common Stock
-7,956$92.65$737k249,801May 15, 2026
May 14, 2026Michael A Bieber
PRESIDENT AND CEO
SOpen-market sale
Common Stock
-276$93.74$26k249,525May 15, 2026
May 14, 2026Michael A Bieber
PRESIDENT AND CEO
MOption exercise
Stock Options (Right to Buy)derivative
-40,009$0.00$00May 15, 2026
May 14, 2026Michael A Bieber
PRESIDENT AND CEO
MOption exercise
Stock Options (Right to Buy)derivative
-16,667$0.00$00May 15, 2026
May 13, 2026Michael A Bieber
PRESIDENT AND CEO
MOption exercise
Common Stock
+9,991$16.27$163k259,516May 14, 2026
May 13, 2026Michael A Bieber
PRESIDENT AND CEO
SOpen-market sale
Common Stock
-9,991$92.65$926k249,525May 14, 2026
May 13, 2026Michael A Bieber
PRESIDENT AND CEO
MOption exercise
Stock Options (Right to Buy)derivative
-9,991$0.00$040,009May 14, 2026
Mar 25, 2026Michael A Bieber
PRESIDENT AND CEO
AGrant or award
Common Stock
+15,750$0.00$0255,969Mar 26, 2026
Mar 25, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
AGrant or award
Common Stock
+3,780$0.00$051,710Mar 26, 2026
Mar 25, 2026Creighton K Early
EXECUTIVE VP AND CFO
AGrant or award
Common Stock
+3,780$0.00$080,806Mar 26, 2026
Mar 25, 2026Michael A Bieber
PRESIDENT AND CEO
FTax withholding
Common Stock
-6,444$82.80$534k249,525Mar 26, 2026
Mar 25, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
FTax withholding
Common Stock
-1,660$82.80$137k50,050Mar 26, 2026
Mar 25, 2026Creighton K Early
EXECUTIVE VP AND CFO
FTax withholding
Common Stock
-2,142$82.80$177k78,664Mar 26, 2026
Mar 20, 2026Michael A Bieber
PRESIDENT AND CEO
FTax withholding
Common Stock
-2,387$75.52$180k240,219Mar 23, 2026
Mar 20, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
FTax withholding
Common Stock
-615$75.52$46k47,930Mar 23, 2026
Mar 20, 2026Creighton K Early
EXECUTIVE VP AND CFO
FTax withholding
Common Stock
-794$75.52$60k77,026Mar 23, 2026
Mar 17, 2026Michael A Bieber
PRESIDENT AND CEO
FTax withholding
Common Stock
-2,625$78.29$206k242,606Mar 19, 2026
Mar 17, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
FTax withholding
Common Stock
-676$78.29$53k48,545Mar 19, 2026
Mar 17, 2026Creighton K Early
EXECUTIVE VP AND CFO
FTax withholding
Common Stock
-873$78.29$68k77,820Mar 19, 2026
Mar 16, 2026Michael A Bieber
PRESIDENT AND CEO
AGrant or award
Common Stock
+17,326$0.00$0252,321Mar 17, 2026
Mar 16, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
AGrant or award
Common Stock
+4,158$0.00$051,047Mar 17, 2026
Mar 16, 2026Creighton K Early
EXECUTIVE VP AND CFO
AGrant or award
Common Stock
+4,158$0.00$081,049Mar 17, 2026
Mar 16, 2026Michael A Bieber
PRESIDENT AND CEO
FTax withholding
Common Stock
-7,090$78.61$557k245,231Mar 17, 2026
Mar 16, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
FTax withholding
Common Stock
-1,826$78.61$144k49,221Mar 17, 2026
Mar 16, 2026Creighton K Early
EXECUTIVE VP AND CFO
FTax withholding
Common Stock
-2,356$78.61$185k78,693Mar 17, 2026
Mar 11, 2026Michael A Bieber
PRESIDENT AND CEO
AGrant or award
Common Stock
+18,810$0.00$0242,692Mar 12, 2026
Mar 11, 2026Thomas Donald Brisbin
director
AGrant or award
Common Stock
+24,750$0.00$095,446Mar 12, 2026
Mar 11, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
AGrant or award
Common Stock
+3,960$0.00$048,627Mar 12, 2026
Mar 11, 2026Creighton K Early
EXECUTIVE VP AND CFO
AGrant or award
Common Stock
+3,960$0.00$079,135Mar 12, 2026
Mar 11, 2026Michael A Bieber
PRESIDENT AND CEO
FTax withholding
Common Stock
-7,697$83.98$646k234,995Mar 12, 2026
Mar 11, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
FTax withholding
Common Stock
-1,738$83.98$146k46,889Mar 12, 2026
Mar 11, 2026Creighton K Early
EXECUTIVE VP AND CFO
FTax withholding
Common Stock
-2,244$83.98$188k76,891Mar 12, 2026
Mar 9, 2026Michael A Bieber
PRESIDENT AND CEO
FTax withholding
Common Stock
-1,814$82.98$151k223,882Mar 11, 2026
Mar 9, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
FTax withholding
Common Stock
-410$82.98$34k44,667Mar 11, 2026
Mar 9, 2026Creighton K Early
EXECUTIVE VP AND CFO
FTax withholding
Common Stock
-4,307$82.98$357k75,175Mar 11, 2026
Mar 6, 2026Steven A Cohen
director
SOpen-market sale
Common Stock
-6,000$81.82$491k20,849Mar 10, 2026
Mar 3, 2026Michael A Bieber
PRESIDENT AND CEO
AGrant or award
Common Stock
+18,000$0.00$0225,696Mar 5, 2026
Mar 3, 2026Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
AGrant or award
Common Stock
+4,500$0.00$045,077Mar 5, 2026
Mar 3, 2026Creighton K Early
EXECUTIVE VP AND CFO
AGrant or award
Common Stock
+5,625$0.00$079,482Mar 5, 2026
Sep 18, 2025Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
MOption exercise
Common Stock
+10,000$32.79$328k50,423Sep 22, 2025
Sep 18, 2025Dennis McGinn V
director
SOpen-market sale
Common Stock
-7,298$106.32$776k11,330Sep 22, 2025
Sep 18, 2025Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
SOpen-market sale
Common Stock
-10,000$106.00$1.1M40,423Sep 22, 2025
Sep 18, 2025Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
MOption exercise
Stock Options (Right to Buy)derivative
-10,000$0.00$040,000Sep 22, 2025
Aug 22, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-10,615$104.58$1.1M177,676Aug 26, 2025
Aug 25, 2025Thomas Donald Brisbin
director
MOption exercise
Common Stock
+5,182$16.27$84k75,878Aug 26, 2025
Aug 22, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-4,910$105.36$517k172,766Aug 26, 2025
Aug 25, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-5,182$118.15$612k70,696Aug 26, 2025
Aug 25, 2025Thomas Donald Brisbin
director
MOption exercise
Stock Options (Right to Buy)derivative
-5,182$0.00$089,736Aug 26, 2025
Aug 22, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-7,520$106.68$802k165,246Aug 26, 2025
Aug 22, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-8,974$107.65$966k156,272Aug 26, 2025
Aug 22, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-24,988$108.90$2.7M131,284Aug 26, 2025
Aug 22, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-33,096$109.39$3.6M98,188Aug 26, 2025
Aug 22, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-27,492$110.84$3.0M70,696Aug 26, 2025
Aug 21, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-7,000$101.87$713k306,291Aug 25, 2025
Aug 21, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-17,106$103.01$1.8M289,185Aug 25, 2025
Aug 21, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-33,464$103.95$3.5M255,721Aug 25, 2025
Aug 21, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-33,950$104.66$3.6M221,771Aug 25, 2025
Aug 21, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-33,380$105.91$3.5M188,391Aug 25, 2025
Aug 21, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-100$106.34$11k188,291Aug 25, 2025
Aug 20, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-7,405$104.19$772k313,291Aug 21, 2025
Aug 18, 2025Michael A Bieber
PRESIDENT AND CEO
AGrant or award
Common Stock
+12,963$0.00$0214,330Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
AGrant or award
Common Stock
+21,461$0.00$0445,696Aug 20, 2025
Aug 18, 2025Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
AGrant or award
Common Stock
+2,732$0.00$041,620Aug 20, 2025
Aug 18, 2025Creighton K Early
EXECUTIVE VP AND CFO
AGrant or award
Common Stock
+2,732$0.00$075,151Aug 20, 2025
Aug 18, 2025Michael A Bieber
PRESIDENT AND CEO
FTax withholding
Common Stock
-6,788$109.53$743k207,542Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
MOption exercise
Common Stock
+5,082$16.27$83k450,778Aug 20, 2025
Aug 18, 2025Micah Chen
EXECUTIVE VP & GENERAL COUNSEL
FTax withholding
Common Stock
-1,197$109.53$131k40,423Aug 20, 2025
Aug 18, 2025Creighton K Early
EXECUTIVE VP AND CFO
FTax withholding
Common Stock
-1,470$109.53$161k73,681Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-4,782$112.30$537k445,996Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-300$113.01$34k445,696Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-33,233$108.63$3.6M412,463Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-58,303$109.51$6.4M354,160Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-26,258$110.51$2.9M327,902Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
SOpen-market sale
Common Stock
-7,206$111.21$801k320,696Aug 20, 2025
Aug 18, 2025Thomas Donald Brisbin
director
MOption exercise
Stock Options (Right to Buy)derivative
-5,082$0.00$094,918Aug 20, 2025
Aug 15, 2025Cynthia Downes
director
SOpen-market sale
Common Stock
-2,763$109.43$302k8,909Aug 18, 2025
Aug 14, 2025Wanda Kay Reder
director
SOpen-market sale
Common Stock
-850$119.46$102k10,676Aug 18, 2025
Aug 13, 2025Creighton K Early
EXECUTIVE VP AND CFO
MOption exercise
Common Stock
+7,764$9.08$70k79,835Aug 15, 2025
Aug 13, 2025Creighton K Early
EXECUTIVE VP AND CFO
SOpen-market sale
Common Stock
-7,764$116.54$905k72,071Aug 15, 2025
Aug 13, 2025Creighton K Early
EXECUTIVE VP AND CFO
MOption exercise
Stock Options (Right to Buy)derivative
-7,764$0.00$00Aug 15, 2025
Aug 12, 2025Steven A Cohen
director
SOpen-market sale
Common Stock
-2,500$116.34$291k26,849Aug 14, 2025
Jun 11, 2025Thomas Donald Brisbin
director
AGrant or award
Common Stock
+1,781$0.00$0424,235Jun 12, 2025

Insiders

Everyone who has filed a Form 4 here.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

WLDN insider trading: Willdan Group, Inc. | InsiderTell