Capital World Investors holds 4.3% of CSW (CSW) as of 03/31/2026

Rhea-AI Filing Summary

Capital World Investors filed an Amendment No. 1 to Schedule 13G reporting beneficial ownership of 716,049 shares of CSW Industrials common stock, equal to 4.3% of the 16,470,230 shares believed outstanding, as of 03/31/2026. The filing lists sole voting and dispositive power over the reported shares and is signed by a Capital Research and Management Company officer.

Insights

Corporate Governance Analyst

Passive 13G amendment reports a sub-5% institutional stake.

Capital World Investors — described as an investment management division of Capital Research and Management Company — reports 716,049 shares, representing 4.3% of the issuer as of 03/31/2026sole voting and dispositive power for those shares.

Because this is an amended Schedule 13G, the position is presented as an ownership disclosure rather than an intent to change control; subsequent filings would show material changes.

Key Figures

Shares beneficially owned: 716,049 shares Percent of class: 4.3% Shares outstanding (believed): 16,470,230 shares +2 more

5 metrics

Shares beneficially owned 716,049 shares reported beneficial ownership

Percent of class <percent>4.3%</percent> of 16,470,230 shares believed outstanding

Shares outstanding (believed) 16,470,230 shares shares believed outstanding as stated in the filing

Reporting date <date>03/31/2026</date> ownership reported as of

Signing date <date>05/13/2026</date> signature date of the amendment

Key Terms

Schedule 13G/A, beneficial owner, sole dispositive power, sole voting power

4 terms

Schedule 13G/A regulatory

"Amendment No. 1 to Schedule 13G reporting beneficial ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficial owner financial

"CWI is deemed to be the beneficial owner of 716,049 shares"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 716,049"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

sole voting power regulatory

"Sole power to vote or to direct the vote: 716,049"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

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

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Accepted by SEC EDGAR 05/14/2026 - 01:55 PM Learn about SEC filing dates

FAQ

What stake does Capital World Investors report in CSW (CSW)?

Capital World Investors reports beneficial ownership of 716,049 shares in CSW, representing 4.3%. The filing cites a total of 16,470,230 shares believed outstanding as of 03/31/2026.

Does Capital World Investors have voting control over the reported CSW shares?

Yes — the filing states Capital World Investors has sole voting power and sole dispositive power over the 716,049 shares. Shared voting and dispositive power are listed as zero.

What form was filed to report this ownership and when is the ownership date?

The holder filed an Amendment No. 1 to Schedule 13G and reports the ownership as of 03/31/2026. The amendment was signed on 05/13/2026 by a company officer.

Is the reported position a controlling stake in CSW Industrials?

No — the reported stake is 4.3% of the outstanding shares, which is below typical control thresholds. The filing is an ownership disclosure, not a control statement.

Who signed the Schedule 13G/A amendment for Capital World Investors?

The amendment is signed by Jae Won Chung, listed as Senior Vice President and Associate General Counsel of Capital Research and Management Company, dated 05/13/2026.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

CSW Industrials, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

126402106

(CUSIP Number)

03/31/2026

(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): 126402106

1

Names of Reporting Persons

Capital World Investors

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 716,049.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 716,049.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

716,049.00

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)

4.3 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CSW Industrials, Inc.
(b)	Address of issuer's principal executive offices: 5420 LYNDON B. JOHNSON FREEWAY, SUITE 500, DALLAS, TX 75240
Item 2.
(a)	Name of person filing: Capital World Investors
(b)	Address or principal business office or, if none, residence: 333 SOUTH HOPE STREET, 55TH FLOOR, LOS ANGELES, CALIFORNIA 90071
(c)	Citizenship: N/A
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 126402106
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: 716,049 ** **Capital World Investors ("CWI") is a division of Capital Research and Management Company ("CRMC"), as well as its investment management subsidiaries and affiliates Capital Bank and Trust Company, Capital International, Inc., Capital International Limited, Capital International Sarl, Capital International K.K., Capital Group Private Client Services, Inc., and Capital Group Investment Management Private Limited (together with CRMC, the "investment management entities"). CWI's divisions of each of the investment management entities collectively provide investment management services under the name "Capital World Investors." CWI is deemed to be the beneficial owner of 716,049 shares or 4.3% of the 16,470,230 shares believed to be outstanding.
(b)	Percent of class: 4.3 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 716,049
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 716,049
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
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.

Capital World Investors

Signature:	Jae Won Chung
Name/Title:	Senior Vice President and Associate General Counsel, Capital Research and Management Company
Date:	05/13/2026