On January 1, 2019, the Company adopted ASU No. 2016-02, "Leases (Topic 842)" using the modified retrospective approach for all lease arrangements at the beginning period of adoption. The Company leases office space under operating leases. As of September 30, 2020, the Company's right-of-use assets and lease liabilities for operating leases totaled $4,370 and $4,499, respectively.

In May 2017, BiomX Israel entered into a lease agreement for office space in Ness Ziona, Israel for five years, beginning on June 1, 2017, with an option to extend for an additional five years. Monthly lease payments under the agreement are approximately $18. As part of the agreement, the Company has obtained a bank guarantee in favor of the property owner in the amount of approximately $95, representing four monthly lease and related payments. Lease expenses recorded in the condensed consolidated statements of operations were $55 and $163 for the three and nine months ended September 30, 2020, respectively. Lease expenses recorded in the condensed consolidated statements of operations were $48 and $96 for the three and nine months ended September 30, 2019, respectively.

In September 2019, BiomX Israel entered into a lease agreement for office space in Ness Ziona, Israel for five years beginning on September 8, 2019, with an option to extend for an additional period until July 14, 2027. Monthly lease payments under the agreement are approximately $12. As part of the agreement, BiomX Israel obtained a bank guarantee in favor of the property owner in the amount of approximately $59, representing four monthly lease and related payments. Lease expenses recorded in the condensed consolidated statements of operations were $35 and $105 for the three and nine months ended September 30, 2020, respectively. Lease expenses recorded in the condensed consolidated statements of operations were $8 for the three and nine months ended September 30, 2019, respectively.

In September 2020, BiomX Israel entered into a lease agreement for office space in Ness Ziona, Israel for five years beginning on September 1, 2020, with an option to extend for an additional period until November 30, 2030. This agreement supersedes the above-mentioned May 2017 and September 2019 lease agreements and sets the prior lease agreements' end date to March 31, 2021. Monthly lease payments under the new lease agreement are approximately $50. As part of the agreement, BiomX Israel is exempt from monthly payments under the new agreement until January 15, 2021. BiomX Israel undertook to obtain a bank guarantee in favor of the property owner in the amount of approximately $208, representing four monthly lease and related payments.  

Supplemental cash flow information related to operating leases was as follows:

As of September 30, 2020, the Company's operating leases had a weighted average remaining lease term of 10. 2 years and a weighted average discount rate of 6%. Future lease payments under operating leases as of September 30, 2020 were as follows: