Willdan Group, Inc. Schedule 13G reports that Divisadero Street Capital Management, LP and related entities/individuals beneficially own up to 1,339,364 shares of Common Stock, representing 8.9% of the class. The filing attributes shared voting and dispositive power over these shares to the reporting persons.
The filing lists related entities—Divisadero Street Partners, L.P. and affiliates—with 1,085,711 shares (7.2%) in one subgroup. All reported securities are described as directly owned by advisory clients of Divisadero Street Capital Management, LP.
Positive
None.
Negative
None.
Insights
Passive institutional stake disclosed with shared voting authority.
The filing shows 1,339,364 shares (8.9%) linked to Divisadero Street Capital Management, LP and affiliates, with shared voting and dispositive power noted. The report identifies ownership as held for advisory clients rather than direct corporate ownership.
Key dependencies include client mandates and any control-person exhibits referenced; subsequent filings would show changes in voting alignment or additional acquisitions.
Key Figures
Reported shares (primary):1,339,364 sharesPercent of class (primary):8.9%Affiliate shares (example):1,085,711 shares+3 more
6 metrics
Reported shares (primary)1,339,364 sharesBeneficially owned by Divisadero Street Capital Management, LP / related reporting persons
Percent of class (primary)8.9%Percent of common stock represented by 1,339,364 shares
Affiliate shares (example)1,085,711 sharesHeld by Divisadero Street Partners, L.P. (7.2% of class)
Percent of class (affiliate)7.2%Percent of common stock represented by 1,085,711 shares
CUSIP96924N100Willdan Group, Inc. Common Stock
Filing date (signature)05/19/2026Date of signatures on the Schedule 13G
Key Terms
Schedule 13G, Shared Voting Power, Beneficially owned, Dispositive Power
4 terms
Schedule 13Gregulatory
"Item 1. Name of issuer: Willdan Group, Inc.; form header"
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
Shared Voting Powerregulatory
"Item 4(c)(ii) lists shared voting power as 1,339,364"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
Beneficially ownedregulatory
"Item 4(a) Amount beneficially owned: 1,339,364"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
Dispositive Powerregulatory
"Item 4(c)(iv) lists shared dispositive power as 1,339,364"
Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Willdan Group, Inc.
(Name of Issuer)
Common Stock, par value $0.01 per share
(Title of Class of Securities)
96924N100
(CUSIP Number)
05/12/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
96924N100
1
Names of Reporting Persons
Divisadero Street Capital Management, LP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,339,364.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,339,364.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,339,364.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
8.9 %
12
Type of Reporting Person (See Instructions)
IA, PN
SCHEDULE 13G
CUSIP Number(s):
96924N100
1
Names of Reporting Persons
William Zolezzi
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,339,364.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,339,364.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,339,364.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
8.9 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
CUSIP Number(s):
96924N100
1
Names of Reporting Persons
Divisadero Street Partners, L.P.
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,085,711.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,085,711.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,085,711.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.2 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
96924N100
1
Names of Reporting Persons
Divisadero Street Partners GP, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,085,711.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,085,711.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,085,711.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.2 %
12
Type of Reporting Person (See Instructions)
HC, OO
SCHEDULE 13G
CUSIP Number(s):
96924N100
1
Names of Reporting Persons
Divisadero Street Capital, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,339,364.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,339,364.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,339,364.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
8.9 %
12
Type of Reporting Person (See Instructions)
HC, OO
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Willdan Group, Inc.
(b)
Address of issuer's principal executive offices:
2401 East Katella Avenue, Suite 300, Anaheim, CA 92806
Item 2.
(a)
Name of person filing:
Divisadero Street Capital Management, LP
William Zolezzi
Divisadero Street Partners, L.P.
Divisadero Street Partners GP, LLC
Divisadero Street Capital, LLC
(b)
Address or principal business office or, if none, residence:
Divisadero Street Capital Management, LP
3480 Main Highway, Suite 204
Miami, FL 33133
William Zolezzi
c/o Divisadero Street Capital Management, LP
3480 Main Highway, Suite 204
Miami, FL 33133
Divisadero Street Partners, L.P.
3480 Main Highway, Suite 204
Miami, FL 33133
Divisadero Street Partners GP, LLC
3480 Main Highway, Suite 204
Miami, FL 33133
Divisadero Street Capital, LLC
3480 Main Highway, Suite 204
Miami, FL 33133
(c)
Citizenship:
Divisadero Street Capital Management, LP - Delaware
William Zolezzi - United States
Divisadero Street Partners, L.P. - Delaware
Divisadero Street Partners GP, LLC - Delaware
Divisadero Street Capital, LLC - Delaware
(d)
Title of class of securities:
Common Stock, par value $0.01 per share
(e)
CUSIP Number(s):
96924N100
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
Divisadero Street Capital Management, LP - 1,339,364
William Zolezzi - 1,339,364
Divisadero Street Partners, L.P. - 1,085,711
Divisadero Street Partners GP, LLC - 1,085,711
Divisadero Street Capital, LLC - 1,339,364
(b)
Percent of class:
Divisadero Street Capital Management, LP - 8.9%
William Zolezzi - 8.9%
Divisadero Street Partners, L.P. - 7.2%
Divisadero Street Partners GP, LLC - 7.2%
Divisadero Street Capital, LLC - 8.9%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Divisadero Street Capital Management, LP - 0
William Zolezzi - 0
Divisadero Street Partners, L.P. - 0
Divisadero Street Partners GP, LLC - 0
Divisadero Street Capital, LLC - 0
(ii) Shared power to vote or to direct the vote:
Divisadero Street Capital Management, LP - 1,339,364
William Zolezzi - 1,339,364
Divisadero Street Partners, L.P. - 1,085,711
Divisadero Street Partners GP, LLC - 1,085,711
Divisadero Street Capital, LLC - 1,339,364
(iii) Sole power to dispose or to direct the disposition of:
Divisadero Street Capital Management, LP - 0
William Zolezzi - 0
Divisadero Street Partners, L.P. - 0
Divisadero Street Partners GP, LLC - 0
Divisadero Street Capital, LLC - 0
(iv) Shared power to dispose or to direct the disposition of:
Divisadero Street Capital Management, LP - 1,339,364
William Zolezzi - 1,339,364
Divisadero Street Partners, L.P. - 1,085,711
Divisadero Street Partners GP, LLC - 1,085,711
Divisadero Street Capital, LLC - 1,339,364
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
All of the securities reported in this Schedule 13G are directly owned by advisory clients of Divisadero Street Capital Management, LP. None of those advisory clients, other than Divisadero Street Partners, L.P., may be deemed to beneficially own more than 5% of the Common Stock.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
Please see Exhibit B attached hereto.
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Divisadero Street Capital Management, LP
Signature:
By: Divisadero Street Capital, LLC, its general partner, By: /s/ William Zolezzi
Name/Title:
William Zolezzi, Manager
Date:
05/19/2026
William Zolezzi
Signature:
/s/ William Zolezzi
Name/Title:
William Zolezzi
Date:
05/19/2026
Divisadero Street Partners, L.P.
Signature:
By: Divisadero Street Partners GP, LLC, its general partner, By: /s/ William Zolezzi
Name/Title:
William Zolezzi, Manager
Date:
05/19/2026
Divisadero Street Partners GP, LLC
Signature:
/s/ William Zolezzi
Name/Title:
William Zolezzi, Manager
Date:
05/19/2026
Divisadero Street Capital, LLC
Signature:
/s/ William Zolezzi
Name/Title:
/s/ William Zolezzi
Date:
05/19/2026
Comments accompanying signature: * Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his, her or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
To the extent that "ownership of 5 percent or less of a class" was indicated in Item 5, such response only applies to the Reporting Person(s) that indicated elsewhere herein that it beneficially owns five percent (5%) or less of the class.
Exhibit Information
Exhibit A - Joint Filing Agreement
Exhibit B - Control Person Identification
How many Willdan Group (WLDN) shares does Divisadero Street report owning?
Divisadero Street reports beneficial ownership of 1,339,364 shares, equal to 8.9% of the common stock. The filing also shows an affiliate position of 1,085,711 shares labeled as 7.2% in the reported group.
Who is the reporting person on the Schedule 13G for WLDN?
The Schedule 13G is filed by Divisadero Street Capital Management, LP, related entities and William Zolezzi. Addresses and citizenships for each reporting person are provided in the filing's Item 2 sections.
Does the filing show sole voting or dispositive power over the shares?
No sole voting or dispositive power is reported. The filing lists 0 shares for sole power and 1,339,364 as shared voting and shared dispositive power for the primary reporting persons.
Are the reported shares owned directly by Divisadero Street?
The filing states the securities are directly owned by advisory clients of Divisadero Street Capital Management, LP. It notes that, except for Divisadero Street Partners, L.P., clients are not deemed to beneficially own more than 5% individually.
What identifying details does the filing include for Willdan Group shares?
The filing lists the class as Common Stock, $0.01 par and provides CUSIP 96924N100. Names, addresses, and citizenships for reporting persons are included in Item 2 of the Schedule 13G.
