Date Name Title Filing Type Shares Traded Price Total Held
Apr 15, 2021
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Bona fide gift 14,000 -- 14,000
Apr 15, 2021
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Bona fide gift 14,000 -- --
Apr 15, 2021
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Bona fide gift 5,383 -- --
Apr 15, 2021
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Bona fide gift 5,383 -- 5,383
Jan 12, 2021
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Bona fide gift 82,108 -- 82,108
Dec 31, 2020
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 620,270 -- 620,270
Dec 31, 2020
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Other acquisition or disposition -- -- 5,821
Dec 31, 2020
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Other acquisition or disposition -- -- 376,861
Dec 30, 2020
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 240,000 $52.03 880,938
Dec 30, 2020
Director, President and Chief Scientific
Director, President and Chief Scientific Form 4 Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3 130,714 $483.25 750,224

* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.