Stocks › Engineering & Construction › WLDN

Willdan Group WLDN

US equityMarket cap rank #3160Engineering & Construction

$73.42 −$0.49 (-0.66%)

Pre-market · Oct 8, 7:00 am ET · After hours $73.42 0.00%

Open$73.20

Prev close$73.91

Day range$72.18 – $74.30

Volume168.2K

Market cap$1.12B

P/E (TTM)17.2

Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership91.3%-1.21 pts vs. prior quarter

Institutions holding294-4 vs. prior quarter

Insider trades (recent)20 buys / 30 sellsNet selling

Short interest13.20% of floatDays to cover 10.5 · as of 15 Sep 2026

Short-sale volume share15.3%5-day average of daily volume

Short-sale volume as % of daily volume

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$949.1K (10 inflow days, 10 outflow days).

Net flow by order size, last 20 sessions

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 29.9% of shares outstanding.

Largest holders

BlackRock9.44%
Divisadero Street Capital Management, LP8.69%
Vanguard Capital Management, LLC4.82%
Neumeier Poma Investment Counsel LLC3.48%
Vanguard Portfolio Management, LLC3.46%
Allspring Global Investments, LLC2.57%
Geode Capital Management, LLC2.52%
First Trust Advisors L.P.2.37%

By investor type

Mutual Fund66.55%
Hedge Fund18.15%
Individual/Insider3.38%
Public Company2.61%
Private Company1.65%
Insurance Company1.18%
Family Office/Trust0.62%
Government Pension Fund0.47%

Reported short interest has risen from 11.08% to 13.20% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

Holder	Type	Period	Share change	New stake
Nuveen Asset Management LLC	Insurance Company	2026/Q3	+42,333	1.0%
Divisadero Street Capital Management, LP	Hedge Fund	2026/Q3	+1,159,306	8.7%
Alta Fox Capital Management, LLC	Hedge Fund	2026/Q3	+359,806	2.4%
Neumeier Poma Investment Counsel LLC	Mutual Fund	2026/Q3	+314,550	3.5%
Conversant Capital LLC	Hedge Fund	2026/Q3	+294,500	1.9%
Oberweis Asset Management, Inc.	Mutual Fund	2026/Q3	+262,700	1.7%
Ranger Investment Management, L.P.	Mutual Fund	2026/Q3	+228,756	1.8%
Wellington Management Group	Mutual Fund	2026/Q3	+210,895	1.4%
Allspring Global Investments, LLC	Mutual Fund	2026/Q3	+174,291	2.6%
Next Century Growth Investors LLC	Mutual Fund	2026/Q3	+126,407	0.8%
BlackRock	Mutual Fund	2026/Q3	+120,899	9.4%
Swedbank Robur Fonder AB	Mutual Fund	2026/Q3	+113,000	2.3%
Macquarie Investment Management Business Trust	Mutual Fund	2026/Q3	+91,836	1.1%
First Trust Advisors L.P.	Mutual Fund	2026/Q3	+74,221	2.4%
Delaware Management Company	Mutual Fund	2026/Q3	+67,088	0.7%

Institutional buy/sell activity by reporting period, largest moves first.

Insider transactions

Date	Insider	Title	Transaction	Shares	Price	Held after
15 Sep 2026	Thomas Brisbin	Chairperson & CEO	Derivative Exercise and Retained	+22,635	$16.27	119,322
14 Sep 2026	Thomas Brisbin	Chairperson & CEO	Derivative Exercise and Sale	-4,905	$80.91	96,687
7 Sep 2026	Thomas Brisbin	Chairperson & CEO	Derivative Exercise and Sale	-3,439	$88.19	96,687
2 Sep 2026	Thomas Brisbin	Chairperson & CEO	Derivative Exercise and Sale	-58,757	$88.14	96,687
16 Jun 2026	Thomas Brisbin	Chairperson & CEO	Other Acquisition	+1,241	–	96,687
16 Jun 2026	Dennis McGinn	Independent Director	Other Acquisition	+1,241	–	12,571
16 Jun 2026	Cynthia Downes	Independent Director	Other Acquisition	+1,241	–	10,150
16 Jun 2026	Mohammad Shahidehpour	Independent Director	Other Acquisition	+1,241	–	15,789
16 Jun 2026	Steven Cohen	Lead Independent Director	Other Acquisition	+1,241	–	22,090
16 Jun 2026	Wanda Reder	Independent Director	Other Acquisition	+1,241	–	11,917
13 May 2026	Michael Bieber	President	Derivative Exercise and Sale	-56,676	$93.74	212,857
12 May 2026	Michael Bieber	President	Derivative Exercise and Sale	-9,991	$92.65	212,857
24 Mar 2026	Creighton Early	CFO & VP	Sale to Issuer	-2,142	$82.80	68,559
24 Mar 2026	Creighton Early	CFO & VP	Other Acquisition	+3,780	–	68,559
24 Mar 2026	Michael Bieber	President	Sale to Issuer	-6,444	$82.80	212,857
24 Mar 2026	Michael Bieber	President	Other Acquisition	+15,750	–	212,857
24 Mar 2026	Micah Chen	General Counsel	Sale to Issuer	-1,660	$82.80	41,070
24 Mar 2026	Micah Chen	General Counsel	Other Acquisition	+3,780	–	41,070
19 Mar 2026	Creighton Early	CFO & VP	Sale to Issuer	-794	$75.52	66,921
19 Mar 2026	Michael Bieber	President	Sale to Issuer	-2,387	$75.52	203,551

From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.

Short interest, by report

Report date	Shares short	% of float	Days to cover
15 Sep 2026	2,010,919	13.2%	10.5
31 Aug 2026	2,116,268	13.9%	9.4
14 Aug 2026	1,910,051	12.5%	6.1
31 Jul 2026	1,925,574	12.7%	9.0
15 Jul 2026	1,907,811	12.6%	5.7
30 Jun 2026	1,674,945	11.1%	4.2

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