윌단 그룹, Inc.
US ˙ NasdaqGM ˙ US96924N1000

SecurityWLDN / Willdan Group, Inc.
InstitutionBlackRock, Inc.
Latest Disclosed Ownership913,915 shares
Ownership 6.30%
BlackRock, Inc. ownership in WLDN / Willdan Group, Inc.

2025-04-17 - BlackRock, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 913,915 shares of Willdan Group, Inc. (US:WLDN). This represents 6.3 percent ownership of the company. In their previous filing dated 2025-02-05 , BlackRock, Inc. had reported owning 1,134,311 shares, indicating a decrease of -19.43 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2025-04-17 2025-04-17 13G/A 1,134,311 913,915 -19.43 6.30 -21.25
2025-02-05 2025-02-05 13G/A 889,208 1,134,311 27.56 8.00 23.08
2024-01-29 2024-01-29 13G/A 760,486 889,208 16.93 6.50 14.04
2023-02-01 2023-02-01 13G/A 756,312 760,486 0.55 5.70 -3.39
2022-02-03 2022-02-03 13G/A 764,648 756,312 -1.09 5.90 -6.35
2021-02-01 2021-02-01 13G/A 724,503 764,648 5.54 6.30 -1.56
2020-02-06 2020-02-06 13G/A 687,836 724,503 5.33 6.40 1.59
2019-02-08 2019-02-08 13G 687,836 687,836 0.00 6.30 0.00
2019-02-07 2019-02-07 13G 540,596 687,836 27.24 6.30 28.57
2018-11-09 2018-11-09 13G/A 478,747 540,596 12.92 4.90 -10.91
2018-02-01 2018-02-01 13G 478,747 5.50

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-13 2026-03-31 13F WILLDAN GROUP COM 96924N100 1,317,724 2,818 0.21 100,885 -25.99 0.0001
2026-02-12 2025-12-31 13F WILLDAN GROUP COM 96924N100 1,314,906 41,793 3.28 136,303 10.73 0.0023
2025-11-12 2025-09-30 13F WILLDAN GROUP COM 96924N100 1,273,113 102,390 8.75 123,097 68.21 0.0022
2025-08-12 2025-06-30 13F WILLDAN GROUP COM 96924N100 1,170,723 32,434 2.85 73,182 57.88 0.0014
2025-05-02 2025-03-31 13F WILLDAN GROUP COM 96924N100 1,138,289 3,978 0.35 46,351 7.28 0.0010
2025-02-07 2024-12-31 13F WILLDAN GROUP COM 96924N100 1,134,311 173,462 18.05 43,206 9.81 0.0009
2024-11-13 2024-09-30 13F WILLDAN GROUP COM 96924N100 960,849 42,488 4.63 39,347 48.51 0.0008
2024-08-13 2024-06-30 13F WILLDAN GROUP COM 96924N100 918,361 36,899 4.19 26,495 3.68 0.0006
2024-05-10 2024-03-31 13F WILLDAN GROUP COM 96924N100 881,462 -7,746 -0.87 25,554 33.67 0.0006
2024-02-13 2023-12-31 13F WILLDAN GROUP COM 96924N100 889,208 73,819 9.05 19,118 14.76 0.0005
2023-11-13 2023-09-30 13F WILLDAN GROUP COM 96924N100 815,389 -11,330 -1.37 16,658 5.17 0.0005
2023-08-11 2023-06-30 13F WILLDAN GROUP COM 96924N100 826,719 82,664 11.11 15,840 36.28 0.0004
2023-05-12 2023-03-31 13F WILLDAN GROUP COM 96924N100 744,055 -16,431 -2.16 11,622 -14.38 0.0003
2023-02-13 2022-12-31 13F WILLDAN GROUP COM 96924N100 760,486 -2,984 -0.39 13,575 20.04 0.0004
2022-11-14 2022-09-30 13F WILLDAN GROUP COM 96924N100 763,470 -19,538 -2.50 11,308 -47.64 0.0004
2022-08-12 2022-06-30 13F WILLDAN GROUP COM 96924N100 783,008 25,052 3.31 21,596 -7.17 0.0007
2022-05-12 2022-03-31 13F WILLDAN GROUP COM 96924N100 757,956 1,644 0.22 23,263 -12.62 0.0006
2022-02-10 2021-12-31 13F WILLDAN GROUP COM 96924N100 756,312 14,474 1.95 26,623 0.84 0.0007
2021-11-09 2021-09-30 13F WILLDAN GROUP COM 96924N100 741,838 -1,334 -0.18 26,401 -5.62 0.0007
2021-08-11 2021-06-30 13F WILLDAN GROUP COM 96924N100 743,172 -43,706 -5.55 27,974 -13.39 0.0008
2021-05-07 2021-03-31 13F WILLDAN GROUP COM 96924N100 786,878 22,230 2.91 32,300 1.30 0.0009
2021-02-05 2020-12-31 13F WILLDAN GROUP COM 96924N100 764,648 29,696 4.04 31,886 70.08 0.0010
2020-11-06 2020-09-30 13F WILLDAN GROUP COM 96924N100 734,952 -10,566 -1.42 18,748 0.56 0.0007
2020-08-14 2020-06-30 13F WILLDAN GROUP COM 96924N100 745,518 10,089 1.37 18,644 18.64 0.0007
2020-05-01 2020-03-31 13F WILLDAN GROUP COM 96924N100 735,429 10,926 1.51 15,715 -31.75 0.0008
2020-02-13 2019-12-31 13F WILLDAN GROUP COM 96924N100 724,503 5,674 0.79 23,026 -8.69 0.0009
2019-11-08 2019-09-30 13F WILLDAN GROUP COM 96924N100 718,829 48,190 7.19 25,217 0.94 0.0011
2019-08-22 2019-06-30 13F/A-1 WILLDAN GROUP COM 96924N100 670,639 48,996 7.88 24,982 8.41 0.0011
2019-08-13 2019-06-30 13F WILLDAN GROUP COM 96924N100 670,639 48,996 24,982
2019-05-09 2019-03-31 13F WILLDAN GROUP COM 96924N100 621,643 -66,193 -9.62 23,044 -4.22 0.0010
2019-02-08 2018-12-31 13F WILLDAN GROUP COM 96924N100 687,836 145,102 26.74 24,060 30.53 0.0012
2018-11-09 2018-09-30 13F WILLDAN GROUP COM 96924N100 542,734 4,617 0.86 18,432 10.60 0.0008
2018-08-09 2018-06-30 13F WILLDAN GROUP COM 96924N100 538,117 61,156 12.82 16,665 23.24 0.0008
2018-05-09 2018-03-31 13F WILLDAN GROUP COM 96924N100 476,961 -1,786 -0.37 13,522 17.98 0.0006
2018-02-09 2017-12-31 13F WILLDAN GROUP COM 96924N100 478,747 3,054 0.64 11,461 -25.78 0.0005
2017-11-14 2017-09-30 13F WILLDAN GROUP COM 96924N100 475,693 8,916 1.91 15,442 8.28 0.0008
2017-08-10 2017-06-30 13F WILLDAN GROUP COM 96924N100 466,777 287,474 160.33 14,261 146.52 0.0008
2017-05-12 2017-03-31 13F WILLDAN GROUP COM 96924N100 179,303 178,603 25,514.71 5,785 36,056.25 0.0003
2017-02-10 2016-12-31 13F WILLDAN GROUP COM 96924N100 700 700 16 0.0000
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.