Convertible Bond Details May 2021 Form 8937 February 2021 Form 8937 Revised December 2020 Form 8937 (Dec. 31, 2020 revision) September 2020 Form 8937 May 2020 Form 8937 February 2020 Form 8937 2019 Form 8937 2018 Form 8937 2017 Form 8937