Willdan Group, Inc.
US ˙ NasdaqGM ˙ US96924N1000

SecurityWLDN / Willdan Group, Inc.
InstitutionFox Run Management, L.l.c.
Latest Disclosed Ownership6,341 shares
Latest Disclosed Value $ 477,668
Fox Run Management, L.l.c. reports 147.89% increase in ownership of WLDN / Willdan Group, Inc.

On May 12, 2026 - Fox Run Management, L.l.c. filed a 13F-HR form disclosing ownership of 6,341 shares of Willdan Group, Inc. (US:WLDN) valued at $485,467 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 2,558 shares of Willdan Group, Inc.. This represents a change in shares of 147.89% during the quarter. The current value of the position is $614,697 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F WILLDAN GROUP COM 96924N100 6,341 3,783 147.89 478 80.00 0.0836
2026-02-11 2025-12-31 13F WILLDAN GROUP COM 96924N100 2,558 -7,471 -74.49 265 -72.65 0.0409
2025-11-12 2025-09-30 13F WILLDAN GROUP COM 96924N100 10,029 10,029 970 0.1512
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.