United States Professional & Commercial Services

Willdan Group Inc (WLDN)

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In the last 90 days, Willdan Group Inc. saw significant insider selling totaling over $6.6 million, primarily driven by executives. The President and CEO, Michael A. Bieber, was notably active, with multiple large sell transactions. No insider purchases were recorded during this period. The company's stock has experienced a modest 5.4% increase over the past 90 days.
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Ticker: WLDN Exchange: NMS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
BIEBER MICHAEL A
PRESIDENT AND CEO
4 sales — total 5,190,212 USD
Sale 14 May 2026
Value US$3,064,356.09 | Price 131.32 | Shares 58,721
Sale 14 May 2026
Value US$2,565,436.75 | Price 132.61 | Shares 42,844
Sale 14 May 2026
Value US$2,116,229.25 | Price 91.95 | Shares 23,015
Sale 14 May 2026
Value US$2,310,987.52 | Price 90.88 | Shares 25,429
Proposed sale 14 May 2026
Value US$4,343,747.42 | Price 397.66 | Shares 33,617
Sale 13 May 2026
Value US$925,666.15 | Price 92.65 | Shares 9,991
Proposed sale 13 May 2026
Value US$925,690.13 | Price 92.65 | Shares 9,991
Sale 6 Mar 2026
Value US$490,920.00 | Price 81.82 | Shares 6,000
Proposed sale 6 Mar 2026
Value US$490,908.00 | Price 81.82 | Shares 6,000
Sale 18 Sep 2025
Value US$1,060,000.00 | Price 106.00 | Shares 10,000
Sale 18 Sep 2025
Value US$775,923.36 | Price 106.32 | Shares 7,298
Proposed sale 18 Sep 2025
Value US$775,910.22 | Price 106.32 | Shares 7,298
Proposed sale 18 Sep 2025
Value US$1,060,000.00 | Price 106.00 | Shares 10,000
Sale 25 Aug 2025
Value US$612,253.30 | Price 118.15 | Shares 5,182
Proposed sale 25 Aug 2025
Value US$612,256.41 | Price 118.15 | Shares 5,182
Sale 22 Aug 2025
Value US$3,047,213.28 | Price 110.84 | Shares 27,492
Sale 22 Aug 2025
Value US$3,620,371.44 | Price 109.39 | Shares 33,096
Sale 22 Aug 2025
Value US$2,721,193.20 | Price 108.90 | Shares 24,988
Sale 22 Aug 2025
Value US$966,051.10 | Price 107.65 | Shares 8,974
Sale 22 Aug 2025
Value US$802,233.60 | Price 106.68 | Shares 7,520
Sale 22 Aug 2025
Value US$517,317.60 | Price 105.36 | Shares 4,910
Sale 22 Aug 2025
Value US$1,110,116.70 | Price 104.58 | Shares 10,615
Sale 21 Aug 2025
Value US$10,634.00 | Price 106.34 | Shares 100
Sale 21 Aug 2025
Value US$3,535,275.80 | Price 105.91 | Shares 33,380
Sale 21 Aug 2025
Value US$3,553,207.00 | Price 104.66 | Shares 33,950
Sale 21 Aug 2025
Value US$3,478,582.80 | Price 103.95 | Shares 33,464
Sale 21 Aug 2025
Value US$1,762,089.06 | Price 103.01 | Shares 17,106
Sale 21 Aug 2025
Value US$713,090.00 | Price 101.87 | Shares 7,000
Sale 20 Aug 2025
Value US$771,526.95 | Price 104.19 | Shares 7,405
Sale 18 Aug 2025
Value US$801,379.26 | Price 111.21 | Shares 7,206
Sale 18 Aug 2025
Value US$2,901,771.58 | Price 110.51 | Shares 26,258
Sale 18 Aug 2025
Value US$6,384,761.53 | Price 109.51 | Shares 58,303
Sale 18 Aug 2025
Value US$3,610,100.79 | Price 108.63 | Shares 33,233
Sale 18 Aug 2025
Value US$33,903.00 | Price 113.01 | Shares 300
Sale 18 Aug 2025
Value US$537,018.60 | Price 112.30 | Shares 4,782
Proposed sale 18 Aug 2025
Value US$570,904.77 | Price 112.34 | Shares 5,082
Sale 15 Aug 2025
Value US$302,355.09 | Price 109.43 | Shares 2,763
Proposed sale 15 Aug 2025
Value US$302,358.41 | Price 109.43 | Shares 2,763
Sale 14 Aug 2025
Value US$101,541.00 | Price 119.46 | Shares 850
Proposed sale 14 Aug 2025
Value US$101,541.00 | Price 119.46 | Shares 850
Sale 13 Aug 2025
Value US$904,816.56 | Price 116.54 | Shares 7,764
Proposed sale 13 Aug 2025
Value US$904,818.89 | Price 116.54 | Shares 7,764
Sale 12 Aug 2025
Value US$290,850.00 | Price 116.34 | Shares 2,500
Proposed sale 12 Aug 2025
Value US$290,856.00 | Price 116.34 | Shares 2,500
Sale 28 May 2025
Value US$266,400.00 | Price 53.28 | Shares 5,000
Proposed sale 28 May 2025
Value US$266,402.00 | Price 53.28 | Shares 5,000
Sale 27 May 2025
Value US$1,175,504.06 | Price 52.34 | Shares 22,459
Proposed sale 27 May 2025
Value US$1,175,504.06 | Price 52.34 | Shares 22,459
Sale 23 May 2025
Value US$83,804.04 | Price 51.54 | Shares 1,626
Sale 22 May 2025
Value US$307,816.60 | Price 52.04 | Shares 5,915
Proposed sale 20 May 2025
Value US$515,300.00 | Price 51.53 | Shares 10,000
Sale 19 May 2025
Value US$505,000.00 | Price 50.50 | Shares 10,000
Proposed sale 19 May 2025
Value US$1,025,400.00 | Price 51.27 | Shares 20,000
Sale 16 May 2025
Value US$482,000.00 | Price 48.20 | Shares 10,000
Proposed sale 16 May 2025
Value US$490,000.00 | Price 49.00 | Shares 10,000
Sale 16 May 2025
Value US$1,202,750.00 | Price 48.11 | Shares 25,000
Proposed sale 16 May 2025
Value US$1,202,500.00 | Price 48.10 | Shares 25,000
Sale 16 May 2025
Value US$970,800.00 | Price 48.54 | Shares 20,000
Proposed sale 15 May 2025
Value US$477,500.00 | Price 47.75 | Shares 10,000
Proposed sale 13 May 2025
Value US$961,000.00 | Price 48.05 | Shares 20,000
Proposed sale 21 Mar 2025
Value US$900,000.00 | Price 45.00 | Shares 20,000
Sale 12 Mar 2025
Value US$89,101.60 | Price 39.20 | Shares 2,273
Proposed sale 12 Mar 2025
Value US$89,101.60 | Price 39.20 | Shares 2,273
Sale 9 Dec 2024
Value US$187,572.37 | Price 43.13 | Shares 4,349
Sale 6 Dec 2024
Value US$10,179.00 | Price 43.50 | Shares 234
Proposed sale 6 Dec 2024
Value US$262,696.50 | Price 43.50 | Shares 6,039
Sale 25 Nov 2024
Value US$334,565.00 | Price 43.45 | Shares 7,700
Sale 22 Nov 2024
Value US$326,018.00 | Price 42.34 | Shares 7,700
Sale 21 Nov 2024
Value US$321,013.00 | Price 41.69 | Shares 7,700
Proposed sale 11 Nov 2024
Value US$75,355.12 | Price 45.07 | Shares 1,672
Sale 11 Nov 2024
Value US$496,341.56 | Price 45.67 | Shares 10,868
Sale 6 Nov 2024
Value US$82,731.44 | Price 45.86 | Shares 1,804
Proposed sale 6 Nov 2024
Value US$503,250.00 | Price 45.75 | Shares 11,000
Sale 12 Aug 2024
Value US$27,345.00 | Price 36.46 | Shares 750
Proposed sale 12 Aug 2024
Value US$139,339.20 | Price 36.40 | Shares 3,828
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-15 2026-05-14 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
58,721 +31.3%
131.32
US$3,064,356 		58,721 +31.3% 131.32 US$3,064,356
2026-05-15 2026-05-14 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
42,844 +1.0%
132.61
US$2,565,437 		42,844 +1.0% 132.61 US$2,565,437
2026-05-15 2026-05-14 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
27,233 +20.1%
264.22
US$97,508 		27,233 +20.1% 264.22 US$97,508
2026-05-15 2026-05-14 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
25,429 -8.3%
90.88
US$2,310,988 		25,429 -8.3% 90.88 US$2,310,988
2026-05-14 2026-05-14 PrS Proposed sale
2.7
MICHAEL BIEBER

Officer; Director

Executive Director
56,676
91.58
US$5,190,150 		56,676 91.58 US$5,190,150
2026-05-14 2026-05-13 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
9,991 -3.8%
92.65
US$925,666 		9,991 -3.8% 92.65 US$925,666
2026-05-13 2026-05-13 PrS Proposed sale
2.7
MICHAEL BIEBER

Officer; Director

Executive Director
9,991
92.65
US$925,690 		9,991 92.65 US$925,690
2026-03-10 2026-03-06 S Sale
2.7
Cohen Steven A
Non-Executive Director
6,000 -22.3%
81.82
US$490,920 		6,000 -22.3% 81.82 US$490,920
2026-03-06 2026-03-06 PrS Proposed sale
2.7
STEVEN A COHEN

Director

Non-Executive Director
6,000
81.82
US$490,908 		6,000 81.82 US$490,908
2025-09-22 2025-09-18 S Sale
2.4
CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Officer
10,000 -19.8%
106.00
US$1,060,000 		10,000 -19.8% 106.00 US$1,060,000
2025-09-22 2025-09-18 S Sale
2.8
McGinn Dennis V
Non-Executive Director
7,298 -39.2%
106.32
US$775,923 		7,298 -39.2% 106.32 US$775,923
2025-09-18 2025-09-18 PrS Proposed sale
2.8
DENNIS MCGINN

Director

Non-Executive Director
7,298
106.32
US$775,910 		7,298 106.32 US$775,910
2025-09-18 2025-09-18 PrS Proposed sale
2.4
MICAH CHEN

Officer

Officer
10,000
106.00
US$1,060,000 		10,000 106.00 US$1,060,000
2025-08-26 2025-08-25 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
5,182 -6.8%
118.15
US$612,253 		5,182 -6.8% 118.15 US$612,253
2025-08-25 2025-08-25 PrS Proposed sale
3.4
THOMAS BRISBIN

Director

Non-Executive Director
5,182
118.15
US$612,256 		5,182 118.15 US$612,256
2025-08-26 2025-08-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
27,492 -28.0%
110.84
US$3,047,213 		27,492 -28.0% 110.84 US$3,047,213
2025-08-26 2025-08-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
33,096 -25.2%
109.39
US$3,620,371 		33,096 -25.2% 109.39 US$3,620,371
2025-08-26 2025-08-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
24,988 -16.0%
108.90
US$2,721,193 		24,988 -16.0% 108.90 US$2,721,193
2025-08-26 2025-08-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
8,974 -5.4%
107.65
US$966,051 		8,974 -5.4% 107.65 US$966,051
2025-08-26 2025-08-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
7,520 -4.4%
106.68
US$802,234 		7,520 -4.4% 106.68 US$802,234
2025-08-26 2025-08-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
4,910 -2.8%
105.36
US$517,318 		4,910 -2.8% 105.36 US$517,318
2025-08-26 2025-08-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
10,615 -5.6%
104.58
US$1,110,117 		10,615 -5.6% 104.58 US$1,110,117
2025-08-25 2025-08-21 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
100 -0.1%
106.34
US$10,634 		100 -0.1% 106.34 US$10,634
2025-08-25 2025-08-21 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
33,380 -15.1%
105.91
US$3,535,276 		33,380 -15.1% 105.91 US$3,535,276
2025-08-25 2025-08-21 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
33,950 -13.3%
104.66
US$3,553,207 		33,950 -13.3% 104.66 US$3,553,207
2025-08-25 2025-08-21 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
33,464 -11.6%
103.95
US$3,478,583 		33,464 -11.6% 103.95 US$3,478,583
2025-08-25 2025-08-21 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
17,106 -5.6%
103.01
US$1,762,089 		17,106 -5.6% 103.01 US$1,762,089
2025-08-25 2025-08-21 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
7,000 -2.2%
101.87
US$713,090 		7,000 -2.2% 101.87 US$713,090
2025-08-21 2025-08-20 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
7,405 -2.3%
104.19
US$771,527 		7,405 -2.3% 104.19 US$771,527
2025-08-20 2025-08-18 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
7,206 -2.2%
111.21
US$801,379 		7,206 -2.2% 111.21 US$801,379
2025-08-20 2025-08-18 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
26,258 -7.4%
110.51
US$2,901,772 		26,258 -7.4% 110.51 US$2,901,772
2025-08-20 2025-08-18 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
58,303 -14.1%
109.51
US$6,384,762 		58,303 -14.1% 109.51 US$6,384,762
2025-08-20 2025-08-18 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
33,233 -7.5%
108.63
US$3,610,101 		33,233 -7.5% 108.63 US$3,610,101
2025-08-20 2025-08-18 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
300 -0.1%
113.01
US$33,903 		300 -0.1% 113.01 US$33,903
2025-08-20 2025-08-18 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
4,782 -1.1%
112.30
US$537,019 		4,782 -1.1% 112.30 US$537,019
2025-08-18 2025-08-18 PrS Proposed sale
3.4
THOMAS BRISBIN

Director

Non-Executive Director
5,082
112.34
US$570,905 		5,082 112.34 US$570,905
2025-08-18 2025-08-15 S Sale
3.0
Downes Cynthia
Non-Executive Director
2,763 -23.7%
109.43
US$302,355 		2,763 -23.7% 109.43 US$302,355
2025-08-15 2025-08-15 PrS Proposed sale
3.0
CYNTHIA DOWNES

Director

Non-Executive Director
2,763
109.43
US$302,358 		2,763 109.43 US$302,358
2025-08-18 2025-08-14 S Sale
3.1
REDER WANDA KAY
Non-Executive Director
850 -7.4%
119.46
US$101,541 		850 -7.4% 119.46 US$101,541
2025-08-14 2025-08-14 PrS Proposed sale
3.1
WANDA REDER

Director

Non-Executive Director
850
119.46
US$101,541 		850 119.46 US$101,541
2025-08-15 2025-08-13 S Sale
3.3
EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Officer
7,764 -9.7%
116.54
US$904,817 		7,764 -9.7% 116.54 US$904,817
2025-08-13 2025-08-13 PrS Proposed sale
3.3
CREIGHTON K EARLY

Officer

Officer
7,764
116.54
US$904,819 		7,764 116.54 US$904,819
2025-08-14 2025-08-12 S Sale
2.7
Cohen Steven A
Non-Executive Director
2,500 -8.5%
116.34
US$290,850 		2,500 -8.5% 116.34 US$290,850
2025-08-12 2025-08-12 PrS Proposed sale
2.7
STEVEN A COHEN

Director

Non-Executive Director
2,500
116.34
US$290,856 		2,500 116.34 US$290,856
2025-05-29 2025-05-28 S Sale
3.3
EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Officer
5,000 -6.5%
53.28
US$266,400 		5,000 -6.5% 53.28 US$266,400
2025-05-28 2025-05-28 PrS Proposed sale
3.3
CREIGHTON K EARLY

Officer

Officer
5,000
53.28
US$266,402 		5,000 53.28 US$266,402
2025-05-29 2025-05-27 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
22,459 -5.0%
52.34
US$1,175,504 		22,459 -5.0% 52.34 US$1,175,504
2025-05-27 2025-05-27 PrS Proposed sale
3.4
THOMAS BRISBIN

Director

Non-Executive Director
22,459
52.34
US$1,175,504 		22,459 52.34 US$1,175,504
2025-05-28 2025-05-23 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
1,626 -0.4%
51.54
US$83,804 		1,626 -0.4% 51.54 US$83,804
2025-05-27 2025-05-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
5,915 -1.4%
52.04
US$307,817 		5,915 -1.4% 52.04 US$307,817
2025-05-20 2025-05-20 PrS Proposed sale
3.4
Brisbin Thomas Donald

Director

Non-Executive Director
10,000
51.53
US$515,300 		10,000 51.53 US$515,300
2025-05-21 2025-05-19 S Sale
2.4
CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Officer
10,000 -20.6%
50.50
US$505,000 		10,000 -20.6% 50.50 US$505,000
2025-05-19 2025-05-19 PrS Proposed sale
3.4
Brisbin Thomas Donald

Director

Non-Executive Director
20,000
51.27
US$1,025,400 		20,000 51.27 US$1,025,400
2025-05-20 2025-05-16 S Sale
2.4
CHEN MICAH

EXECUTIVE VP & GENERAL COUNSEL

Officer
10,000 -20.6%
48.20
US$482,000 		10,000 -20.6% 48.20 US$482,000
2025-05-20 2025-05-16 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
25,000 -11.1%
48.11
US$1,202,750 		25,000 -11.1% 48.11 US$1,202,750
2025-05-20 2025-05-16 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
20,000 -4.5%
48.54
US$970,800 		20,000 -4.5% 48.54 US$970,800
2025-05-16 2025-05-16 PrS Proposed sale
2.4
CHEN MICAH

Officer

Officer
10,000
49.00
US$490,000 		10,000 49.00 US$490,000
2025-05-16 2025-05-16 PrS Proposed sale
2.7
BIEBER MICHAEL A

Officer

Officer
25,000
48.10
US$1,202,500 		25,000 48.10 US$1,202,500
2025-05-15 2025-05-15 PrS Proposed sale
2.4
CHEN MICAH

Officer

Officer
10,000
47.75
US$477,500 		10,000 47.75 US$477,500
2025-05-13 2025-05-13 PrS Proposed sale
3.4
Brisbin Thomas Donald

Director

Non-Executive Director
20,000
48.05
US$961,000 		20,000 48.05 US$961,000
2025-03-21 2025-03-21 PrS Proposed sale
2.4
CHEN MICAH

Officer

Officer
20,000
45.00
US$900,000 		20,000 45.00 US$900,000
2025-03-13 2025-03-12 S Sale
2.2
Shahidehpour Mohammad
Non-Executive Director
2,273 -15.1%
39.20
US$89,102 		2,273 -15.1% 39.20 US$89,102
2025-03-12 2025-03-12 PrS Proposed sale
2.2
Shahidehpour Mohammad

Director

Non-Executive Director
2,273
39.20
US$89,102 		2,273 39.20 US$89,102
2024-12-10 2024-12-09 S Sale
3.3
EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Officer
4,349 -5.9%
43.13
US$187,572 		4,349 -5.9% 43.13 US$187,572
2024-12-10 2024-12-06 S Sale
3.3
EARLY CREIGHTON K

EXECUTIVE VP AND CFO

Officer
234 -0.3%
43.50
US$10,179 		234 -0.3% 43.50 US$10,179
2024-12-06 2024-12-06 PrS Proposed sale
3.3
EARLY CREIGHTON K

Officer

Officer
6,039
43.50
US$262,696 		6,039 43.50 US$262,696
2024-12-16 2024-11-25 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
7,700 -1.9%
43.45
US$334,565 		7,700 -1.9% 43.45 US$334,565
2024-12-16 2024-11-22 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
7,700 -1.8%
42.34
US$326,018 		7,700 -1.8% 42.34 US$326,018
2024-12-16 2024-11-21 S Sale
3.4
Brisbin Thomas Donald
Non-Executive Director
7,700 -1.8%
41.69
US$321,013 		7,700 -1.8% 41.69 US$321,013
2024-11-12 2024-11-11 PrS Proposed sale
2.7
BIEBER MICHAEL A

Officer

Officer
1,672
45.07
US$75,355 		1,672 45.07 US$75,355
2024-11-12 2024-11-11 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
10,868 -5.9%
45.67
US$496,342 		10,868 -5.9% 45.67 US$496,342
2024-11-08 2024-11-06 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
1,804 -1.0%
45.86
US$82,731 		1,804 -1.0% 45.86 US$82,731
2024-11-06 2024-11-06 PrS Proposed sale
2.7
BIEBER MICHAEL A

Officer

Officer
11,000
45.75
US$503,250 		11,000 45.75 US$503,250
2024-08-14 2024-08-12 S Sale
2.7
BIEBER MICHAEL A

PRESIDENT AND CEO

Executive Director
750 -0.4%
36.46
US$27,345 		750 -0.4% 36.46 US$27,345
2024-08-12 2024-08-12 PrS Proposed sale
2.7
BIEBER MICHAEL A

Officer

Officer
3,828
36.40
US$139,339 		3,828 36.40 US$139,339
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