Southwest Gas Holdings, Inc.

SWX·NYSE·$89.20Share Price as of 11/2·$6BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/05/26 10-QQ1 ended 03/31/2605/05/26 10-KFY 202502/25/26 10-QQ3 ended 09/30/2511/05/25 10-QQ2 ended 06/30/2508/06/25

Disclosures

8-KCurrent report10/20/26 8-KCurrent report08/05/26 8-KCurrent report05/11/26 8-KCurrent report05/05/26 8-KCurrent report02/25/26

Prospectuses and Registrations

424B7Prospectus11/26/25 424B5Prospectus supplement08/06/24 S-8Registration of securities for employees05/10/24 424B5Prospectus supplement11/28/23 S-3ASRAutomatic shelf registration11/28/23

Proxies

DEF 14ADefinitive proxy03/23/26 DEFA14AAdditional proxy materials03/23/26 DEF 14ADefinitive proxy03/17/25 DEFA14AAdditional proxy materials03/17/25 DEFR14ADefinitive proxy (revised)03/22/24

Ownership

SC 13GBeneficial ownership10/30/26 Form 4Insider transaction09/29/26 144Proposed sale of securities09/28/26 Form 3Initial insider ownership05/13/26 Form 3Initial insider ownership05/13/26

Other

11-KEmployee stock purchase plan report06/25/26 ARSAnnual report to shareholders03/23/26 11-KEmployee stock purchase plan report06/25/25 15-12GCertification of termination of registration05/21/25 25-NSERemoval from listing05/21/25