Southwest Gas (NYSE: SWX) SVP receives new stock awards

Rhea-AI Filing Summary

Southwest Gas Holdings SVP and chief legal officer Catherine M. Mazzeo acquired additional company stock through equity awards. On February 19, she received 3,964.655 shares of common stock as restricted stock units that vest in three annual installments of 40%, 30%, and 30%, assuming continued service. She also acquired 2,233.006 shares of common stock delivered upon settlement of performance stock units granted three years earlier after performance goals were met. Following these awards, she directly owned 16,693.889 shares and held 745.839 shares indirectly through a 401(k) plan.

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).

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^*

Mazzeo Catherine M

(Last) (First) (Middle)

8360 S DURANGO DR

(Street)

LAS VEGAS NV 89113

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Southwest Gas Holdings, Inc. [ SWX ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP/Chief Legal/Comp. Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/19/2026

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

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

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

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	02/19/2026		A		3,964.655(1)	A	$0	14,460.883	D
Common Stock	02/19/2026		A		2,233.006(2)	A	$0	16,693.889	D
Common Stock								745.839	I	By 401(k)

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. Each restricted stock unit represents a contingent right to receive one share of SWX common stock. Restricted stock units vest in three annual installments (40%, 30%, 30%), assuming continued service.

2. Settled Performance Stock Units delivered to the reporting person three years after grant date as a result of satisfaction of performance goals.

Remarks:

	Catherine M. Mazzeo	02/23/2026
	** 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.

FAQ

What insider transaction did Southwest Gas (SWX) report for Catherine M. Mazzeo?

Southwest Gas reported that SVP and chief legal officer Catherine M. Mazzeo acquired common stock through equity awards. She received restricted stock units and settled performance stock units, increasing her direct and 401(k) holdings in Southwest Gas common shares as of February 19.

How many Southwest Gas (SWX) shares did Catherine Mazzeo acquire in the latest Form 4?

Catherine Mazzeo acquired 3,964.655 Southwest Gas common shares via restricted stock units and 2,233.006 shares through settled performance stock units. These awards were reported as grant or award acquisitions at a stated price of $0.0000 per share on February 19.

What are the vesting terms of Catherine Mazzeo’s new Southwest Gas (SWX) restricted stock units?

Each restricted stock unit represents one Southwest Gas common share and vests in three annual installments of 40%, 30%, and 30%. Vesting requires continued service, aligning Mazzeo’s equity compensation with long-term employment at Southwest Gas Holdings, Inc.

What does the performance stock unit settlement mean for Southwest Gas (SWX) insider holdings?

The performance stock unit settlement delivered Southwest Gas common shares to Catherine Mazzeo three years after grant, once performance goals were satisfied. This increased her direct ownership stake and reflects equity compensation tied to multi-year performance criteria at the company.

How many Southwest Gas (SWX) shares does Catherine Mazzeo own after the reported awards?

After the reported awards, Catherine Mazzeo directly owned 16,693.889 Southwest Gas common shares. She also indirectly held 745.839 additional shares through a 401(k) plan, as disclosed in the Form 4 insider transaction filing for February 19.

Are Catherine Mazzeo’s new Southwest Gas (SWX) awards open-market purchases or compensation grants?

The new Southwest Gas shares reported for Catherine Mazzeo are compensation-related awards, not open-market purchases. They are classified as grants or other acquisitions, including restricted stock units and settled performance stock units, each recorded at a price of $0.0000 per share.