On November 14, 2021, Icahn Capital announced that its effort so far has been rebuffed by Southwest Gas board it is now seeking to replace, and a representative for Southwest Gas. Icahn called his nominees a blue-ribbon slate of directors and noted that eight of them were independent of his Icahn Enterprises. Icahn's nominees are former Federal Energy Regulatory commissioner Nora Mead Brownell, Marcie Edwards, Andrew Evans, H. Russell Frisby, Walter Higgins, Rina Joshi, Henry Linginfelter, and Ruby Sharma.

Jesse Lynn and Andrew Teno from Icahn Enterprises round out the slate.