Welcome to our dedicated page for Southwest Gas Holdings SEC filings (Ticker: SWX), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Southwest Gas Holdings, Inc. filings document the regulatory, financial, governance, and capital-structure disclosures of a NYSE-listed natural gas utility holding company. Current reports furnish operating results, dividend actions, rate-case developments, Great Basin project disclosures, and material corporate events involving Southwest Gas Holdings and Southwest Gas Corporation.
Proxy materials cover board composition, director elections, executive compensation, shareholder voting matters, and governance arrangements. The filing record also includes executive and director transition disclosures, termination of a cooperation agreement with the Icahn Group, common stock registration details, and accounting matters related to deferred income tax liabilities and financial-statement reliance.
Southwest Gas Holdings executive Catherine M. Mazzeo reported an equity transaction involving company common stock. On January 8, 2026, a transaction coded "F" covered 737.424 shares of Southwest Gas Holdings common stock at $80.15 per share, leaving her with 10,496.228 shares held directly.
She also reported an additional 745.839 shares held indirectly through a 401(k) plan. The reported direct balance includes 348.695 shares and the 401(k) balance includes 23.484 shares that were acquired through exempt dividend reinvestment transactions.
Southwest Gas Holdings, Inc. executive Amy L. Timperley, SVP/Chief Regulatory & Public Affairs, reported a Form 4 transaction in Southwest Gas Holdings, Inc. common stock. On January 8, 2026, a transaction coded "F" involved 864.181 shares at $80.15 per share, leaving her with 9,153.522 directly held shares of common stock. She also reported 8,975.446 shares held indirectly through a 401(k). Footnotes state that these balances include shares acquired through exempt dividend reinvestment transactions.
Southwest Gas Holdings, Inc. executive Julie M. Williams reported a tax-related share withholding in company stock. On January 8, 2026, 1,271.426 shares of Southwest Gas Holdings common stock were withheld at a price of $80.15 per share, reported under transaction code "F," which typically reflects shares withheld to cover taxes on equity awards rather than an open-market sale.
After this transaction, Williams directly held 20,603.966 shares of common stock and indirectly held 2,485.076 shares through a 401(k) plan. The filing notes that these balances include shares previously acquired through exempt dividend reinvestment transactions.
Southwest Gas Holdings officer Fabio A. Pineda reported a disposition of company stock. On 01/08/2026, he disposed of 249.889 shares of common stock at $80.15 per share, according to a Form 4 filing. After this transaction, he beneficially owned 1,203.538 shares directly. The reported balance includes 10.915 shares that were previously acquired through exempt dividend reinvestment transactions.
Southwest Gas Holdings, Inc. President and CEO Karen S. Haller reported a change in her ownership of the company’s common stock. On January 8, 2026, she disposed of 7,630.576 shares of common stock at $80.15 per share, after which she directly owned 148,843.19 shares.
The filing also reports indirect ownership of 996 shares held by her spouse and 2,498.714 shares held through a 401(k) account. Footnotes state that the reported balances include shares acquired through exempt dividend reinvestment transactions.
Southwest Gas Holdings, Inc. reported an insider stock transaction by President of Southwest Gas Corp., Justin L. Brown. On 01/08/2026, Brown had 2,572.614 shares of common stock disposed of in a transaction coded "F" at $80.15 per share, typically indicating shares withheld in connection with equity compensation. Following this transaction, he beneficially owned 34,122.835 shares directly and 3,658.482 shares indirectly through a 401(k) plan. The balances include shares acquired through exempt dividend reinvestment transactions.
Southwest Gas Holdings is restating certain 2025 quarterly results after finding errors in how it estimated deferred state income tax liabilities following Centuri stock sales and tax deconsolidation. The Audit Committee determined that the unaudited condensed consolidated financial statements for the quarters and year-to-date periods ended June 30 and September 30, 2025 should no longer be relied upon.
The errors understated income tax expense and net deferred income tax liabilities by about $27 million for the June 30, 2025 periods and an additional $8 million for the September 30, 2025 periods, reducing GAAP net income and increasing reported losses. Revenue, operating margin and cash flows for these periods are unchanged, and the company reaffirms its 2025 net income guidance and 2025–2029 CAGR targets.
Restated interim figures will be included in the 2025 Form 10‑K and future filings, and prior earnings releases and presentations covering these periods should not be relied upon. Southwest Gas expects to report ineffective disclosure controls and procedures and a material weakness in internal control over financial reporting for the affected 2025 interim periods and the year ended December 31, 2025.
SWX filed a notice of proposed sale of restricted securities under Rule 144. The filing covers the planned sale of 3,028 shares of common stock through Fidelity Brokerage Services LLC on the NYSE, with an aggregate market value of $245,510.24. These shares were acquired on 01/04/2026 through restricted stock vesting from the issuer as compensation, with payment also dated 01/04/2026. The filing notes that 72,182,840 shares of the same class were outstanding and lists an approximate sale date of 01/09/2026.
Southwest Gas Holdings, Inc. received an updated ownership report from investment entities associated with Carl C. Icahn. The filing shows these Icahn-related funds beneficially own a total of 6,032,604 shares of Southwest Gas common stock, representing 8.36% of the company’s outstanding shares, based on 72,183,903 shares outstanding as of November 21, 2025.
The amendment also notes that on December 31, 2025, Andrew Teno, a designee of the reporting persons, resigned from Southwest Gas’s board of directors. The document breaks down voting and dispositive power among multiple Icahn-related partnerships and entities, but all point to the same aggregate 8.36% beneficial stake.
Southwest Gas Holdings, Inc. reported that Andrew Teno resigned from its Board of Directors effective December 31, 2025. The company stated that his resignation was not due to any disagreement regarding its financial statements, operations, policies, or practices. Teno, an Icahn Group designee under an October 14, 2025 cooperation agreement, cited other time commitments and referenced the company’s Great Basin expansion, path to improved return on equity, and balance sheet in his notice.
Under the cooperation agreement, the Icahn Group may designate four, three, two, or no directors depending on its beneficial ownership of specified share thresholds. The Icahn Group has indicated it does not currently intend to appoint a replacement designee, and the Board plans to reduce its size from 11 to 10 members. Ruby Sharma is expected to join the Strategic Transactions Committee in Teno’s place, while his Compensation Committee seat will not be filled at this time.