69 ITEM 1B. UNRESOLVED STAFF COMMENTS None. ITEM 2. PROPERTIES Our corporate offices are located in Palo Alto, California, where we lease approximately 155,000 square feet of office, research and development, engineering and laboratory space pursuant to lease agreements commencing in June 2020. The initial lease term for 1200 Page Mill Road is 6.5 years and 13 years for 1250 Page Mill Road. We continue to lease office and laboratory space at 2631 Hanover Street in Palo Alto, California, which commenced in January 2013. In March 2016, we executed a third lease amendment agreement that became effective March 31, 2016 and extended the lease term until October 31, 2023. The facilities in Palo Alto, California houses substantially all of our personnel. In April 2020, we entered into a lease agreement for office and laboratory space at Rottenstrasse 5 in Visp, Switzerland. The space is approximately 1,000 square meters. The initial lease term is 5 years, with automatic renewals every 5 years for a maximum lease term of 15 years. ITEM 3. LEGAL PROCEEDINGS We are not a party to any material legal proceedings at this time. From time to time, we may be subject to various legal proceedings and claims that arise in the ordinary course of our business activities. Although the results of litigation and claims cannot be predicted with certainty, we do not believe we are party to any claim or litigation the outcome of which, if determined adversely to us, would individually or in the aggregate be reasonably expected to have a material adverse effect on our business. Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors. ITEM 4. MINE SAFETY DISCLOSURES None.