On March 27, 2023, we entered into a purchase and sale agreement, or the “Royalty Purchase Agreement,” with RTW.

Pursuant to the Royalty Purchase Agreement, RTW agreed to purchase, following the FDA approval of etripamil on or prior to September 30, 2025 (subject to certain conditions), in exchange for a purchase price of $75.0 million, the right to receive a tiered quarterly royalty payments, or the “Royalty Interest,” on the annual net product sales of etripamil in the

United States in an amount equal to: (i) 7%, or the “Initial Tier Royalty,” of annual net sales up to $500 million, (ii) 4% of annual net sales greater than $500 million and less than or equal to $800 million, and (iii) 1% of annual net sales greater than $800 million. If certain revenue thresholds for aggregate annual net sales are not met, the Initial Tier Royalty will increase to 9.5% beginning on January 1 of the following calendar year until a subsequent sales threshold is attained, at which time the Initial Tier Royalty would revert back to 7%.

Based on the Company’s assessment of the terms and conditions under the Royalty Purchase Agreement, there is no accounting recognition required in these interim financial statements.