In March 2017, the Company entered into an operating facility lease agreement for approximately 34,500 rentable square feet located at the 1020 Space. The lease commenced in August 2017 for a period of 87 months with one renewal option for a five-year term. The Company did not include the renewal option period as the Company determined it was not reasonably certain the lease would be renewed as of the modification date.

In October 2018, the Company executed a sublease agreement in Palo Alto, California for approximately 4,240 square feet for office space. The rental term of the sublease commenced on October 30, 2018 and expires August 31, 2020.

During the three and nine months ended September 30, 2019, the Company’s operating lease costs were $0.5 million and $1.6 million, respectively and cash paid for amounts included in the measurement of lease obligations for operating cash flows from operating leases for the nine months ended September 30, 2019 was $2.0 million. As of September 30, 2019, the Company’s operating leases had a weighted average remaining lease term of 4.9 years and a weighted average discount rate of 7.75%, which approximates the Company’s incremental borrowing rate.

As of September 30, 2019, minimum lease payments under non-cancelable operating leases by period were expected to be as follows (in thousands):

Year Ending December 31,
2019 (3 months remaining)	$	677
2020		2,668
2021		2,618
2022		2,697
2023		2,777
Thereafter		2,373
Total operating lease payments		13,810
Less imputed interest		(2,939	)
Total operating lease obligations		10,871
Less current operating lease obligations		(2,464	)
Noncurrent operating lease obligations	$	8,407

In August 2018, the Company entered into an operating sublease agreement with EVA Automation, Inc. (“EVA”) for the 1020 Space referenced above. The 1020 Space sublease commenced on October 1, 2018 for 72 months. EVA is entitled to an abatement of base rent of approximately $0.9 million for the first five full calendar months of the term of the sublease. Lease income associated with this sublease is recorded in other income in the accompanying consolidated statement of operations. The Company has recorded lease income associated with this sublease of approximately $0.6 million and $1.9 million for the three and nine months ended September 30, 2019, respectively. During the nine months ended September 30, 2019, cash received from EVA was $1.4 million, which amount was included in other current assets for operating cash flows.

Future base rent and additional rent EVA shall pay to the Company over the sublease term as of September 30, 2019, are as follows (in thousands):


Year Ending December 31,
2019 (3 months remaining)	$	637
2020		2,563
2021		2,628
2022		2,695
2023		2,764
Thereafter		2,355
Total	$	13,642