David W. Gryska

Companies

• Definium TherapeuticsBoard member Jun 23, 2023 to now¹
• Forte Biosciences, Inc.Board member Jan 12, 2023 to now²
• SeagenBoard member Feb 15, 2006 to Dec 15, 2023³
• Aerie PharmaceuticalsBoard member Oct 25, 2013 to Nov 21, 2022⁴
• IncyteChief financial officer Nov 4, 2014 to Jul 18, 2018⁵

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• DTDefinium Therapeutics DFTX19,900 shares⁶$682.8K at $34.31Jun 11, 2026
• Seagen SGEN0 shares⁷Dec 14, 2023
• APAerie Pharmaceuticals AERI0 shares⁸Nov 21, 2022
• FBForte Biosciences, Inc.0 shares⁹Aug 27, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 27, 2026U 5,940 shares of Forte Biosciences, Inc.⁹
• Jun 11, 2026Granted 4,666 shares of Definium Therapeutics⁶
• Dec 5, 2024Bought 2,500 shares at $7.17 of Definium Therapeutics¹⁰
• Aug 23, 2024Bought 3,500 shares at $5.98 of Definium Therapeutics¹¹
• Dec 14, 2023Returned to company 49,003 shares at $229.00 of Seagen⁷
• Jul 31, 2023Granted 148,514 shares at $1.01 of Forte Biosciences, Inc.¹²
• Jun 21, 2023Granted 13,851 shares of Definium Therapeutics¹³
• May 31, 2023Granted 2,044 shares of Seagen¹⁴
• Feb 13, 2023Exercised options 8,750 shares at $36.70 of Seagen¹⁵
• Nov 21, 2022Returned to company 1,996 shares at $15.25 of Aerie Pharmaceuticals⁸
• Nov 21, 2022Returned to company 11,495 shares at $15.25 of Aerie Pharmaceuticals⁸
• Nov 11, 2022Sold 7,500 shares at $129.10 of Seagen¹⁶
• Jun 9, 2022Granted 6,245 shares of Aerie Pharmaceuticals¹⁷
• May 13, 2022Granted 1,503 shares of Seagen¹⁸
• Apr 19, 2022Sold 690 shares at $145.08 of Seagen¹⁹
• Apr 19, 2022Exercised options 690 shares at $20.06 of Seagen¹⁹
• Apr 19, 2022Sold 1,516 shares at $144.17 of Seagen¹⁹
• Apr 19, 2022Exercised options 1,516 shares at $20.06 of Seagen¹⁹
• Apr 19, 2022Sold 1,794 shares at $143.32 of Seagen¹⁹
• Apr 19, 2022Exercised options 1,794 shares at $20.06 of Seagen¹⁹
• Feb 7, 2022Sold 2,371 shares at $139.42 of Seagen²⁰
• Feb 7, 2022Exercised options 2,371 shares at $20.06 of Seagen²⁰
• Feb 7, 2022Sold 1,029 shares at $138.66 of Seagen²⁰
• Feb 7, 2022Exercised options 1,029 shares at $20.06 of Seagen²⁰
• Feb 7, 2022Sold 1,100 shares at $137.45 of Seagen²⁰