6.     Leases

The Company leases office space in Irvine, California that houses office space and a manufacturing facility under a non-cancellable operating lease. The lease term commenced on October 1, 2018 and expires in September 2023. The Company has the option to renew the lease for two additional periods of five years each. The Company also leases office space in Solana Beach, California that houses certain management, and research and development personnel, and now serves as its corporate headquarters. The lease term commenced on December 15, 2020, is set to expire on December 31, 2026, and is renewable for an additional five-year period, at the Company’s option, provided that the Company’s landlord has entered into an extension of its lease for the office space that encompasses the Company’s office space for at least five years. Both office leases are classified as operating leases in conformity with GAAP.

The lease cost, included in general and administrative expense, was $0.1 million and $0.03 million for the three months ended June 30, 2021 and 2020, respectively, and was $0.3 million and $0.06 million for the six months ended June 30, 2021 and 2020, respectively.