Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events

Subsequent Events
3 Months Ended
Mar. 31, 2020
Subsequent Events [Abstract]  
Subsequent Events Subsequent Events
Icagen Acquisition

On April 1, 2020, we acquired the core assets, including its partnered programs and ion channel technology from Icagen and certain of its affiliates for $15.0 million in cash. Icagen will also be entitled to receive up to an additional $25.0 million of cash payments based on certain revenue milestones.

Bond Hedge Arrangement

On April 6, 2020, in connection with the repurchases of $234.4 million in principal of the 2023 Notes for $203.8 million in cash, including accrued interest of $0.6 million, during the quarter ended March 31, 2020, we entered into amendments (the “Amendments”) with Barclays Bank PLC, Deutsche Bank AG, London Branch, and Goldman Sachs & Co. LLC to the convertible note hedge transactions, dated May 17, 2018 and May 18, 2018 (collectively, the “Convertible Note Hedge Transactions”) we initially entered into in connection with the issuance of the 2023 Notes. The Amendments provide that the options under the Convertible Note Hedge Transactions corresponding to such repurchased 2023 Notes will remain outstanding notwithstanding such repurchase.