“Alaska has made the airport aware of its interest in leasing some of the build-back space for a potential lounge but has not signed a lease for additional space in Terminal 2," he said. “

[…]

Asked whether SFO is marketing the build-back space to other airlines, [SFO spokesman Doug] Yakel said: “Not at the moment.”

[…]

“American is scheduled to vacate Terminal 2 in March 2020, when they will commence operations in our new Terminal 1 and Boarding Area B,” Yakel said.

As for the space occupied by that American lounge, Yakel said, “We are interested in providing additional concession space in Terminal 2, so it could be repurposed for that, but no final decision has been made at this point.”