CSW EVP Don Sullivan sells 166 CSW shares

CSW INDUSTRIALS, INC. executive Don Sullivan, EVP and Chief Strategy Officer, reported an open-market sale of 166 shares of common stock at $300.26 per share on April 15, 2026.

Rhea-AI Filing Summary

CSW INDUSTRIALS, INC. executive Don Sullivan, EVP and Chief Strategy Officer, reported an open-market sale of 166 shares of common stock at $300.26 per share on April 15, 2026. This transaction was carried out under a pre-arranged Rule 10b5-1 trading plan established on December 15, 2025.

Following the sale, Sullivan holds 21,567 shares of common stock directly. In addition, an employee stock ownership plan holds 1,875 shares indirectly on his behalf, reflecting a remaining equity position after this relatively small transaction.

Insider Trade Summary 10b5-1

Net Seller: 166 shares

Net Sell 2 txns

Insider Sullivan Don

Role EVP, Chief Strategy Officer

Sold 166 shs ($50K)

Type	Security	Shares	Price	Value
Sale	Common Stock	166	$300.26	$50K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 21,567 shares (Direct); Common Stock — 1,875 shares (Indirect, by ESOP)

Footnotes (1)

1. F1. The transaction reported was effected pursuant to a 10b5-1 trading plan established by the reporting person on December 15, 2025.

Key Figures

Shares sold: 166 shares Sale price: $300.26 per share Direct holdings after sale: 21,567 shares +3 more

6 metrics

Shares sold 166 shares Open-market sale of common stock on April 15, 2026

Sale price $300.26 per share Price for 166 CSW Industrials common shares sold

Direct holdings after sale 21,567 shares Common stock directly owned by Don Sullivan after transaction

Indirect ESOP holdings 1,875 shares Common stock held indirectly by ESOP for Don Sullivan

Net shares sold 166 shares Net sell direction in transaction summary

Transaction date April 15, 2026 Date of reported open-market sale

Key Terms

Rule 10b5-1 trading plan, open-market sale, Common Stock, ESOP

4 terms

Rule 10b5-1 trading plan regulatory

"The transaction reported was effected pursuant to a 10b5-1 trading plan established by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

""security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

ESOP financial

""nature_of_ownership": "by ESOP""

An Employee Stock Ownership Plan (ESOP) is a program that gives employees ownership shares in their company, often as part of their benefits package. It acts like a company-sponsored savings plan, allowing workers to have a stake in the company's success, which can boost motivation and loyalty. For investors, ESOPs can influence company decisions and stock value, making them an important aspect of corporate ownership and governance.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did CSW (CSW) executive Don Sullivan report?

Don Sullivan reported selling 166 shares of CSW Industrials common stock. The shares were sold in an open-market transaction at $300.26 per share, and the filing shows his direct and indirect holdings after this relatively small sale.

At what price were the CSW (CSW) shares sold in Don Sullivan’s Form 4?

The reported sale was executed at $300.26 per share. This price applies to 166 shares of CSW Industrials common stock sold in an open-market transaction disclosed in the Form 4 insider trading report.

How many CSW (CSW) shares does Don Sullivan hold after the reported sale?

After the sale, Don Sullivan directly holds 21,567 CSW Industrials shares. The filing also notes an additional 1,875 shares held indirectly through an employee stock ownership plan, indicating continued meaningful equity exposure.

Was Don Sullivan’s CSW (CSW) stock sale under a Rule 10b5-1 plan?

Yes. The filing states the transaction was executed under a Rule 10b5-1 trading plan. This plan was established by Don Sullivan on December 15, 2025, indicating the sale was pre-arranged rather than a spur-of-the-moment trade.

What role does Don Sullivan hold at CSW (CSW) in this Form 4 filing?

In the Form 4, Don Sullivan is identified as CSW Industrials’ Executive Vice President and Chief Strategy Officer. The filing links his leadership role to the reported open-market sale and subsequent share ownership levels.

What indirect CSW (CSW) share holdings are reported for Don Sullivan?

The Form 4 reports 1,875 CSW Industrials shares held indirectly for Don Sullivan. These shares are held "by ESOP," referring to an employee stock ownership plan, and are listed separately from his direct common stock holdings.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/16/2026 - 04:05 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sullivan Don

(Last) (First) (Middle)

5420 LBJ FREEWAY

SUITE 500

(Street)

DALLAS TEXAS 75240

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CSW INDUSTRIALS, INC. [ CSW ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Strategy Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/15/2026		S(1)		166	D	$300.26	21,567	D
Common Stock								1,875	I	by ESOP

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The transaction reported was effected pursuant to a 10b5-1 trading plan established by the reporting person on December 15, 2025.

Remarks:

	/s/ Luke E. Alverson, Attorney-in-Fact for Don Sullivan	04/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)