Leases

3 Months Ended

Jul. 31, 2020

Leases [Abstract]

Leases

6. Leases

The Company has a lease agreement for approximately 2,700 square feet of space for its headquarters located in Cambridge, Massachusetts that commenced in September 2017 for a term of five years.

The Company has lease agreements for approximately 13,400 square feet of office and research laboratory space located in Porton Down, United Kingdom that run through April 2023, with an option to extend through April 2028.  

The Company is also party to several operating leases for office and laboratory space as well as certain lab equipment. Total rent expense was $200,000 and $177,000 for the three months ended July 31, 2020 and 2019, respectively and is reflected in general and administrative expenses and research and development expenses as determined by the underlying activities.

The following table summarizes the maturity of undiscounted payments due under lease liabilities and the present value of those liabilities as of July 31, 2020 (in thousands):

Fiscal Years	Operating Leases
2021	$	489
2022		386
2023		242
2024		145
2025		145
Thereafter		447
Total lease payments		1,854
Less: imputed interest		(331	)
Total lease liabilities		1,523
Current lease liabilities		513
Long-term lease liabilities	$	1,010