Related party transactions	3 Months Ended
Mar. 31, 2021
Related Party Transactions [Abstract]
Related party transactions	9. Related party transactions Biotech Investment Group, LLC Prior to the Corporate Reorganization, Biotech Investment Group, LLC (“BIG”), was a principal owner, related party of the Company and affiliated with Biotech Investment Group II LLC (“BIG II”). Subsequent to the Corporate Reorganization, BIG is no longer a principal owner and, as a result, neither BIG nor its affiliates are related parties of the Company. Biotech Investment Group II LLC For the three months ended March 31, 2020, the Company recognized interest expense (including amortization of debt discounts) of $20,000 related to an outstanding convertible promissory note payable to BIG II. The convertible promissory note payable to BIG II was settled in connection with the Corporate Reorganization in July 2020. Dr. Jay Short and Carolyn Anderson Short Convertible Promissory Notes For the three months ended March 31, 2020, the Company recognized interest expense (including amortization of debt discounts) of $39,000 related to outstanding convertible promissory notes payable to Dr. Jay Short and Carolyn Anderson Short. The convertible promissory notes payable to Dr. Jay Short and Carolyn Anderson Short were settled in connection with the Corporate Reorganization in July 2020. Transition Agreement On March 18, 2021, the Company and Carolyn Anderson Short, its co-founder and Chief of Intellectual Property & Strategy, mutually agreed that Ms. Short would depart the Company on May 31, 2021 following an agreed upon transition period. The Transition Agreement provides for the following severance benefits in exchange for a release of claims by Ms. Short: (i) a lump sum payment equal to eighteen (18) months of Ms. Short’s current base salary, (ii) a payment at her targeted bonus rate for 2021, pro-rated to the separation date, and (iii) accelerated full vesting of her equity awards including 7,747 stock options and 138,461 restricted stock units. The modification of these equity awards resulted in an incremental fair value of $7.0 million which will be recognized on a straight-line basis over the transition service period. For the three months ended March 31, 2021, the Company recognized $0.2 million related to the lump sum salary payment and target bonus, and a $1.0 million non-cash charge related to the modified equity awards.

Related party transactions

3 Months Ended

Mar. 31, 2021

9. Related party transactions

Biotech Investment Group, LLC

Prior to the Corporate Reorganization, Biotech Investment Group, LLC (“BIG”), was a principal owner, related party of the Company and affiliated with Biotech Investment Group II LLC (“BIG II”). Subsequent to the Corporate Reorganization, BIG is no longer a principal owner and, as a result, neither BIG nor its affiliates are related parties of the Company.

Biotech Investment Group II LLC

For the three months ended March 31, 2020, the Company recognized interest expense (including amortization of debt discounts) of $20,000 related to an outstanding convertible promissory note payable to BIG II. The convertible promissory note payable to BIG II was settled in connection with the Corporate Reorganization in July 2020.

Dr. Jay Short and Carolyn Anderson Short

Convertible Promissory Notes

For the three months ended March 31, 2020, the Company recognized interest expense (including amortization of debt discounts) of $39,000 related to outstanding convertible promissory notes payable to Dr. Jay Short and Carolyn Anderson Short. The convertible promissory notes payable to Dr. Jay Short and Carolyn Anderson Short were settled in connection with the Corporate Reorganization in July 2020.

Transition Agreement

On March 18, 2021, the Company and Carolyn Anderson Short, its co-founder and Chief of Intellectual Property & Strategy, mutually agreed that Ms. Short would depart the Company on May 31, 2021 following an agreed upon transition period. The Transition Agreement provides for the following severance benefits in exchange for a release of claims by Ms. Short: (i) a lump sum payment equal to eighteen (18) months of Ms. Short’s current base salary, (ii) a payment at her targeted bonus rate for 2021, pro-rated to the separation date, and (iii) accelerated full vesting of her equity awards including 7,747 stock options and 138,461 restricted stock units. The modification of these equity awards resulted in an incremental fair value of $7.0 million which will be recognized on a straight-line basis over the transition service period. For the three months ended March 31, 2021, the Company recognized $0.2 million related to the lump sum salary payment and target bonus, and a $1.0 million non-cash charge related to the modified equity awards.