# EDGAR Filing Document

**Accession Number:** 0000092416
**File Stem:** 0001692115-25-000122
**Filing Date:** 2025-6
**Character Count:** 7806
**Document Hash:** 7ac0157f3b869ac55b25db1310a9f3b6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001692115-25-000122.hdr.sgml**: 20250603

**ACCESSION NUMBER**: 0001692115-25-000122

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20250529

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**FILED AS OF DATE**: 20250603

**DATE AS OF CHANGE**: 20250603

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Southwest Gas Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001692115
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATURAL GAS TRANSMISSION & DISTRIBUTION [4923]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 813881866
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37976
- **FILM NUMBER:** 251020111

**BUSINESS ADDRESS:**
- **STREET 1:** C/O SOUTHWEST GAS CORPORATION
- **STREET 2:** 8360 S. DURANGO DRIVE
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89113
- **BUSINESS PHONE:** 702-876-7237

**MAIL ADDRESS:**
- **STREET 1:** C/O SOUTHWEST GAS CORPORATION
- **STREET 2:** 8360 S. DURANGO DRIVE
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89113
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SOUTHWEST GAS CORP
- **CENTRAL INDEX KEY:** 0000092416
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATURAL GAS TRANSMISSION & DISTRIBUTION [4923]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 880085720
- **STATE OF INCORPORATION:** CA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-07850
- **FILM NUMBER:** 251020112

**BUSINESS ADDRESS:**
- **STREET 1:** 8360 S. DURANGO DRIVE
- **STREET 2:** PO BOX 98510
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89113
- **BUSINESS PHONE:** 7028767237

**MAIL ADDRESS:**
- **STREET 1:** 8360 S. DURANGO DRIVE
- **STREET 2:** PO BOX 98510
- **CITY:** LAS VEGAS
- **STATE:** NV
- **ZIP:** 89113

?xml version='1.0' encoding='ASCII'? swx-20250529

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**Form 8-K** 

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported) May 29, 2025** 

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| *Commission*<br>*File Number* | *Exact name of registrant as specified in its charter and*<br>*principal office address and telephone number* | *Exact name of registrant as specified in its charter and*<br>*principal office address and telephone number* | *Exact name of registrant as specified in its charter and*<br>*principal office address and telephone number* | *State of*<br>*Incorporation* | *I.R.S.*<br>*Employer Identification No.* |
| 001-37976 | Southwest Gas Holdings, Inc. |  |  | Delaware | 81-3881866 |
|  | 8360 S. Durango Dr. |  |  |  |  |
|  | Las Vegas, | Nevada | 89113 |  |  |
|  |  | (702)  | 876-7237 |  |  |
| 001-7850 | Southwest Gas Corporation |  |  | California | 88-0085720 |
|  | 8360 S. Durango Dr. |  |  |  |  |
|  | Las Vegas, | Nevada | 89113 |  |  |
|  |  | (702)  | 876-7237 |  |  |

---

**Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:**

☐ **Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)**

☐ **Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)**

☐ **Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))**

☐ **Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))**

---

| | | |
|:---|:---|:---|
| **Securities registered pursuant to Section 12(b) of the Act:** | **Securities registered pursuant to Section 12(b) of the Act:** | **Securities registered pursuant to Section 12(b) of the Act:** |
| ***Southwest Gas Holdings, Inc.:*** | ***Southwest Gas Holdings, Inc.:*** | ***Southwest Gas Holdings, Inc.:*** |
| **Title of each class** | **Trading Symbol** | **Name of each exchange on which registered** |
| Southwest Gas Holdings, Inc. Common Stock, $1 Par Value | SWX | New York Stock Exchange |
| ***Southwest Gas Corporation:*** | ***Southwest Gas Corporation:*** | ***Southwest Gas Corporation:*** |
| None. |  |  |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). &nbsp;&nbsp;&nbsp;&nbsp;

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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**Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.**

As previously disclosed in the Current Report on Form 8-K filed by Southwest Gas Holdings, Inc. and Southwest Gas Corporation (the "Companies") on March 13, 2025, Ms. Lori L. Colvin, Vice President/Controller/Chief Accounting Officer for the Companies, informed the Companies of her intention to retire effective June 1, 2025. Due to her retirement, on May 29, 2025, the board of directors of each of the Companies appointed Mr. Robert J. Stefani, 51, Senior Vice President/Chief Financial Officer for the Companies, to also serve as Controller for the Companies, effective June 1, 2025. In his capacity as Controller, Mr. Stefani will be assuming the role of principal accounting officer for the Companies. Mr. Stefani's appointment as the Controller will automatically terminate upon the appointment of a permanent Controller, and the Companies continue the nationwide executive search for a new Controller.

Mr. Stefani's biographical information is set forth in the Definitive Proxy Statement for the 2025 Annual Meeting of Stockholders of Southwest Gas Holdings, Inc., as filed with the U.S. Securities and Exchange Commission on March 17, 2025, and such information is incorporated herein by reference. No family relationships exist between Mr. Stefani and any of the Companies' directors or other executive officers. There are no arrangements between Mr. Stefani and any other person pursuant to which Mr. Stefani was selected as an officer, nor are there any transactions to which the Companies are or were a participant and in which Mr. Stefani has a material interest subject to disclosure under Item 404(a) of Regulation S-K. Mr. Stefani will not receive any adjustment to his salary or any additional compensation in connection with his appointment as the Controller.

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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| | |
|:---|:---|
| | SOUTHWEST GAS HOLDINGS, INC. |
| June 3, 2025 | /s/ CATHERINE M. MAZZEO |
| | Catherine M. Mazzeo |
| | Senior Vice President/Chief Legal, Safety and Compliance Officer and Corporate Secretary |

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| | |
|:---|:---|
| | SOUTHWEST GAS CORPORATION |
| June 3, 2025 | /s/ CATHERINE M. MAZZEO |
| | Catherine M. Mazzeo |
| | Senior Vice President/Chief Legal, Safety and Compliance Officer and Corporate Secretary |

---