Kayne Anderson Rudnick boosts Simpson (SSD) stake to 4.0M shares, 9.7%

Rhea-AI Filing Summary

Kayne Anderson Rudnick Investment Management, LLC filed an amended Schedule 13G reporting its beneficial ownership of Simpson Manufacturing Co Inc common stock. The firm reports beneficial ownership of 4,017,923 Simpson Manufacturing Ord Shs, representing 9.7% of the outstanding class as of the reported date.

Kayne Anderson Rudnick has sole voting power over 2,584,882 shares and shared voting power over 797,010 shares. It has sole dispositive power over 3,220,913 shares and shared dispositive power over 797,010 shares. The filer certifies the shares are held in the ordinary course of business and not for the purpose of changing or influencing control of Simpson Manufacturing.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 6)

Simpson Manufacturing Co Inc

(Name of Issuer)

Simpson Manufacturing Ord Shs

(Title of Class of Securities)

829073105

(CUSIP Number)

12/31/2025

(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)

SCHEDULE 13G

CUSIP No. 829073105

1

Names of Reporting Persons

Kayne Anderson Rudnick Investment Management, 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

CALIFORNIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,584,882.00
6	Shared Voting Power 797,010.00
7	Sole Dispositive Power 3,220,913.00
8	Shared Dispositive Power 797,010.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,017,923.00

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)

9.7 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Simpson Manufacturing Co Inc
(b)	Address of issuer's principal executive offices: 5956 West Las Positas Boulevard, Pleasanton, CA, 94588, US
Item 2.
(a)	Name of person filing: Kayne Anderson Rudnick Investment Management, LLC
(b)	Address or principal business office or, if none, residence: 2000 Avenue of the Stars, Suite 1110, Los Angeles, 90067, CA, United States
(c)	Citizenship: CALIFORNIA
(d)	Title of class of securities: Simpson Manufacturing Ord Shs
(e)	CUSIP No.: 829073105
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: 4,017,923
(b)	Percent of class: 9.7 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2,584,882
	(ii) Shared power to vote or to direct the vote: 797,010
	(iii) Sole power to dispose or to direct the disposition of: 3,220,913
	(iv) Shared power to dispose or to direct the disposition of: 797,010
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.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
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 acquired and are held in the ordinary course of business and 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.

Kayne Anderson Rudnick Investment Management, LLC

Signature:	/s/Michael Shoemaker
Name/Title:	Chief Compliance Officer
Date:	02/13/2026

FAQ

What percentage of Simpson Manufacturing (SSD) shares does Kayne Anderson Rudnick report owning?

Kayne Anderson Rudnick reports beneficial ownership of 9.7% of Simpson Manufacturing’s common stock. This corresponds to 4,017,923 Simpson Manufacturing Ord Shs, as disclosed in the amended Schedule 13G filing, indicating a significant institutional position in SSD.

How many Simpson Manufacturing (SSD) shares does Kayne Anderson Rudnick control through voting rights?

Kayne Anderson Rudnick reports 2,584,882 shares with sole voting power and 797,010 shares with shared voting power in Simpson Manufacturing. Together, these positions reflect how many SSD shares the firm can vote or direct the vote on.

What is the total number of Simpson Manufacturing (SSD) shares Kayne Anderson Rudnick can dispose of?

The firm has sole dispositive power over 3,220,913 shares and shared dispositive power over 797,010 shares of Simpson Manufacturing. These figures describe how many SSD shares Kayne Anderson Rudnick can sell or otherwise direct the disposition of.

Is Kayne Anderson Rudnick’s stake in Simpson Manufacturing (SSD) intended to influence control?

The filing states the securities were acquired and are held in the ordinary course of business and not for the purpose or effect of changing or influencing control of Simpson Manufacturing, indicating a passive investment stance for its SSD holdings.

What type of filing did Kayne Anderson Rudnick submit regarding Simpson Manufacturing (SSD)?

Kayne Anderson Rudnick submitted an amended Schedule 13G/A (Amendment No. 6) for Simpson Manufacturing Co Inc. This form is typically used by investors holding more than 5% of a company’s stock on a passive, non-control-seeking basis.

Who signed the Schedule 13G/A related to Simpson Manufacturing (SSD) for Kayne Anderson Rudnick?

The Schedule 13G/A was signed by Michael Shoemaker, identified as Chief Compliance Officer. His signature certifies that, to the best of his knowledge and belief, the information regarding the SSD share ownership is true, complete, and correct.