Don Sullivan - 08 Dec 2025 Form 4 Insider Report for CSW INDUSTRIALS, INC. (CSWI)

Role: EVP, Chief Strategy Officer
Signature: /s/ Luke E. Alverson, Attorney-in-Fact for Don Sullivan
Issuer symbol: CSWI
Transactions as of: 08 Dec 2025
Net transactions value: -$1,246,632
Form type: 4
Filing time: 09 Dec 2025, 16:55:35 UTC
Previous filing: 03 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Sullivan Don	EVP, Chief Strategy Officer	5420 LBJ FREEWAY, SUITE 500, DALLAS	/s/ Luke E. Alverson, Attorney-in-Fact for Don Sullivan	09 Dec 2025	0001663176

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CSW	Common Stock	Sale	$1,246,632	-4,136	-19%	$301.41	18,196	08 Dec 2025	Direct	F1
holding	CSW	Common Stock						1,875	08 Dec 2025	by ESOP

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $301.04 to $302.23, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Content

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $301.04 to $302.23, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.