WILLDAN GROUP INC WLDN
COM · Common Stock · CUSIP 96924N100 · ISIN US96924N1000
- SectorIndustrials
- IndustryServices-Engineering Services
- HeadquartersAnaheim, CA
- Founded1964
- Websitewilldan.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($128.1k this quarter). Holder counts are more reliable. Shares outstanding: 15.2m as of 2026-08-06, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $79.07. Options: 8 managers hold calls ($9.9m notional), 6 hold puts ($3.7m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 79 |
| Q4 2022 | 77 |
| Q1 2023 | 82 |
| Q2 2023 | 85 |
| Q3 2023 | 92 |
| Q4 2023 | 91 |
| Q1 2024 | 102 |
| Q2 2024 | 111 |
| Q3 2024 | 144 |
| Q4 2024 | 156 |
| Q1 2025 | 171 |
| Q2 2025 | 191 |
| Q3 2025 | 256 |
| Q4 2025 | 267 |
| Q1 2026 | 256 |
| Q2 2026 | 246 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 98 | 42 |
| Q4 2024 | 90 | 62 |
| Q1 2025 | 86 | 74 |
| Q2 2025 | 104 | 74 |
| Q3 2025 | 159 | 99 |
| Q4 2025 | 148 | 117 |
| Q1 2026 | 147 | 137 |
| Q2 2026 | 135 | 129 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $55.4m | $10.8m | 0.19 |
| Q4 2025 | $24.3m | $3.4m | 0.14 |
| Q1 2026 | $11.0m | $5.0m | 0.45 |
| Q2 2026 | $9.9m | $3.7m | 0.38 |
Biggest buyers
| Divisadero Street Capital Management, LP | Added | +1.2m |
| ALTA FOX CAPITAL MANAGEMENT, LLC | New | +359.8k |
| NEUMEIER POMA INVESTMENT COUNSEL LLC | Added | +314.6k |
| Conversant Capital LLC | New | +294.5k |
| OBERWEIS ASSET MANAGEMENT INC/ | New | +262.7k |
| Ranger Investment Management, L.P. | Added | +228.8k |
| WELLINGTON MANAGEMENT GROUP LLP | New | +210.9k |
| Allspring Global Investments Holdings, LLC | Added | +174.3k |
| NEXT CENTURY GROWTH INVESTORS LLC | New | +126.4k |
| BlackRock, Inc. | Added | +120.9k |
Biggest sellers
| TWO SIGMA INVESTMENTS, LP | Reduced | -317.4k |
| Driehaus Capital Management LLC | Sold out | -219.9k |
| ALGERT GLOBAL LLC | Sold out | -147.6k |
| Valiant Capital Management, L.P. | Sold out | -143.3k |
| WELLS FARGO & COMPANY/MN | Reduced | -102.4k |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | -98.0k |
| WASATCH ADVISORS LP | Reduced | -94.5k |
| TUDOR INVESTMENT CORP ET AL | Reduced | -85.5k |
| Qube Research & Technologies Ltd | Reduced | -79.0k |
| Trexquant Investment LP | Sold out | -70.2k |
Biggest calls
| JANE STREET GROUP, LLC | Added | $3.4m42.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.5m32.1k shares |
| CITADEL ADVISORS LLC | Reduced | $1.8m23.0k shares |
| IMC-Chicago, LLC | Reduced | $1.4m17.5k shares |
| Marex Group Ltd | New | $553.7k7.0k shares |
| SIMPLEX TRADING, LLC | Added | $102.8k1.3k shares |
| Point72 Asset Management, L.P. | Reduced | $55.4k700 shares |
| GROUP ONE TRADING LLC | Reduced | $31.6k400 shares |
Biggest puts
| JANE STREET GROUP, LLC | Added | $1.0m13.2k shares |
| IMC-Chicago, LLC | Reduced | $980.8k12.4k shares |
| CITADEL ADVISORS LLC | Reduced | $925.5k11.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $735.6k9.3k shares |
| SIMPLEX TRADING, LLC | Added | $39.5k500 shares |
| GROUP ONE TRADING LLC | New | $7.9k100 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Divisadero Street Capital Management, LP 13G · passive investor new · filed 2026-05-19 | 8.9% |
| BlackRock, Inc. 13G · institution +1.7 pts · filed 2026-07-30 | 8.0% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 3 | $1.8m | — |
| Q1 2025 | 0 | — | 1 | $89.1k | — |
| Q2 2025 | 0 | — | 4 | $5.0m | — |
| Q3 2025 | 0 | — | 7 | $44.9m | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 1 | $490.9k | — |
| Q2 2026 | 0 | — | 1 | $6.1m | — |
| Q3 2026 | 0 | — | 1 | $5.9m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-15 | Brisbin Thomas Donald Director | Sold | $389.3k4.9k shares |
| 2026-09-08 | Brisbin Thomas Donald Director | Sold | $303.3k3.4k shares |
| 2026-09-03 | Brisbin Thomas Donald Director | Sold | $5.2m58.8k shares |
| 2026-05-14 | BIEBER MICHAEL A PRESIDENT AND CEO, director | Sold | $5.2m56.7k shares |
| 2026-05-13 | BIEBER MICHAEL A PRESIDENT AND CEO, director | Sold | $925.7k10.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 1.4m $113.8m | Added +120.9k |
| Divisadero Street Capital Management, LP 2.44% of their portfolio | 1.3m $104.8m | Added +1.2m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 632.9k $50.1m | Added +19.6k |
| NEUMEIER POMA INVESTMENT COUNSEL LLC 2.87% of their portfolio | 530.2k $41.9m | Added +314.6k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 527.3k $41.7m | Added +42.1k |
| Allspring Global Investments Holdings, LLC 0.05% of their portfolio | 390.7k $30.5m | Added +174.3k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 383.4k $30.3m | Added +29.1k |
| FIRST TRUST ADVISORS LP 0.02% of their portfolio | 361.1k $28.6m | Added +74.2k |
| ALTA FOX CAPITAL MANAGEMENT, LLC 5.72% of their portfolio | 359.8k $28.5m | New |
| Swedbank AB 0.02% of their portfolio | 349.7k $27.7m | Added +113.0k |
| STATE STREET CORP 0.00% of their portfolio | 337.4k $26.7m | Added +22.7k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 320.9k $25.4m | Added +11.9k |
| Conversant Capital LLC 2.73% of their portfolio | 294.5k $23.3m | New |
| WASATCH ADVISORS LP 0.15% of their portfolio | 287.1k $22.7m | Reduced -94.5k |
| Ranger Investment Management, L.P. 1.38% of their portfolio | 275.2k $21.8m | Added +228.8k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.43% of their portfolio | 262.7k $20.8m | New |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 260.5k $20.6m | Reduced -11.9k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 210.9k $16.7m | New |
| Nuveen, LLC 0.00% of their portfolio | 210.8k $16.7m | Reduced -31.7k |
| Handelsbanken Fonder AB 0.04% of their portfolio | 191.5k $15.2m | Added +48.9k |
| RBF Capital, LLC 0.61% of their portfolio | 184.6k $14.6m | Unchanged |
| NORTHERN TRUST CORP 0.00% of their portfolio | 163.3k $12.9m | Added +14.2k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.02% of their portfolio | 163.1k $12.9m | Added +91.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 155.3k $12.3m | Added +25.4k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 150.6k $11.9m | Reduced -317.4k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 143.9k $11.4m | Added +49.5k |
| NEXT CENTURY GROWTH INVESTORS LLC 0.53% of their portfolio | 126.4k $10.0m | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 120.1k $9.5m | Reduced -2.6k |
| PANAGORA ASSET MANAGEMENT INC 0.03% of their portfolio | 114.7k $9.1m | Added +53.5k |
| MORGAN STANLEY 0.00% of their portfolio | 111.2k $8.8m | Reduced -10.6k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 108.7k $8.6m | Added +30.3k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 100.7k $8.0m | Added +4.9k |
| LORD, ABBETT & CO. LLC 0.02% of their portfolio | 98.9k $7.8m | Added +22.4k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.14% of their portfolio | 97.4k $7.7m | Added +13.8k |
| UBS Group AG 0.00% of their portfolio | 96.9k $7.7m | Added +54.2k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 89.9k $7.1m | Reduced -52.6k |
| Portolan Capital Management, LLC 0.25% of their portfolio | 84.4k $6.7m | Reduced -9.6k |
| Summit Creek Advisors LLC 2.25% of their portfolio | 83.5k $6.6m | Reduced -64.1k |
| Asset Management One Co., Ltd. 0.02% of their portfolio | 77.3k $6.1m | Added +17.2k |
| ESSEX INVESTMENT MANAGEMENT CO LLC 0.78% of their portfolio | 74.9k $5.9m | Reduced -3.4k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.11% of their portfolio | 68.6k $5.4m | Reduced -483 |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 59.4k $4.7m | Added +6.7k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 58.9k $4.7m | Reduced -1.3k |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 56.2k $4.4m | Reduced -4.2k |
| OP Asset Management Ltd 0.05% of their portfolio | 55.8k $4.4m | Added +39.1k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 55.7k $4.4m | Added +3.1k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 55.4k $4.4m | Reduced -79.0k |
| Janney Montgomery Scott LLC 0.01% of their portfolio | 52.3k $4.1m | Reduced -1.7k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 49.7k $3.9m | Added +13.4k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 45.6k $3.6m | Reduced -102.4k |
| EFG International AG 0.07% of their portfolio | 45.2k $3.6m | Reduced -855 |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 44.9k $3.6m | Added +15.2k |
| Jefferies Financial Group Inc. 0.03% of their portfolio | 41.2k $3.3m | Reduced -3.1k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 39.1k $3.1m | Added +3.1k |
| CVFG LLC 0.31% of their portfolio | 37.2k $2.9m | Reduced -7.3k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.05% of their portfolio | 35.6k $2.8m | Reduced -3.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 34.7k $2.7m | Added +2.1k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 34.1k $2.6m | Reduced -10.6k |
| MML INVESTORS SERVICES, LLC 0.01% of their portfolio | 33.7k $2.7m | Added +17.5k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 33.3k $2.6m | Reduced -3.4k |
| RICE HALL JAMES & ASSOCIATES, LLC 0.12% of their portfolio | 30.6k $2.4m | Added +1.4k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 29.3k $2.3m | Reduced -1.0k |
| Swiss National Bank 0.00% of their portfolio | 29.0k $2.3m | Reduced -200 |
| CITIGROUP INC 0.00% of their portfolio | 28.6k $2.3m | Added +7.9k |
| ALPS ADVISORS INC 0.01% of their portfolio | 28.6k $2.3m | Added +366 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 28.0k $2.2m | Added +6.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 27.7k $2.2m | Added +201 |
| Conestoga Capital Advisors, LLC 0.05% of their portfolio | 27.6k $2.2m | Added +3.9k |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 25.4k $2.0m | Reduced -85.5k |
| Legato Capital Management LLC 0.17% of their portfolio | 25.2k $2.0m | Reduced -6.0k |
| HRT FINANCIAL LP 0.00% of their portfolio | 24.6k $1.9m | Reduced -53.5k |
| WHITTIER TRUST CO 0.02% of their portfolio | 23.7k $1.9m | Unchanged |
| Invesco Ltd. 0.00% of their portfolio | 22.7k $1.8m | Added +2.0k |
| STOREBRAND ASSET MANAGEMENT AS 0.00% of their portfolio | 22.7k $1.8m | Added +1.6k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 22.5k $1.8m | New |
| De Lisle Partners LLP 0.18% of their portfolio | 21.0k $1.7m | Unchanged |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 20.7k $1.6m | Added +15.3k |
| Man Group plc 0.00% of their portfolio | 20.5k $1.6m | Reduced -33.4k |
| LPL Financial LLC 0.00% of their portfolio | 19.9k $1.6m | Reduced -3.8k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 19.3k $1.5m | Added +8.0k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 18.9k $1.5m | Added +1.4k |
| BARCLAYS PLC 0.00% of their portfolio | 18.5k $1.5m | Reduced -20.8k |
| NATIXIS ADVISORS, LLC 0.00% of their portfolio | 16.7k $1.3m | New |
| Polymer Capital Management (US) LLC 0.19% of their portfolio | 16.6k $1.3m | New |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 16.5k $1.3m | Added +10.9k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 16.5k $1.3m | Reduced -1.5k |
| Longaeva Partners L.P. 0.04% of their portfolio | 16.3k $1.3m | New |
| Y-Intercept (Hong Kong) Ltd 0.02% of their portfolio | 16.0k $1.3m | Reduced -1.2k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 15.3k $1.2m | Reduced -14.0k |
| Cetera Investment Advisers 0.00% of their portfolio | 15.3k $1.2m | Reduced -3.7k |
| WULFF, HANSEN & CO. 0.93% of their portfolio | 15.3k $1.2m | Reduced -87 |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 14.8k $1.2m | Added +2.0k |
| Sanctuary Advisors, LLC 0.01% of their portfolio | 14.7k $1.2m | Added +2.2k |
| Legal & General Group Plc 0.00% of their portfolio | 14.0k $1.1m | Added +161 |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 13.3k $1.1m | Added +1.3k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 13.2k $1.0m | Added +208 |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 12.9k $1.0m | Reduced -98.0k |
| WEDBUSH SECURITIES INC 0.03% of their portfolio | 12.4k $978.0k | Added +6.3k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 12.3k $970.6k | Reduced -27.1k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 11.7k $928.0k | Reduced -11.6k |