Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 2 boards, counting each seat separately. Longest: Definium Therapeutics Inc., 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Definium Therapeutics Inc. June 11, 202699.5%
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Definium Therapeutics Inc. June 16, 202599.5%
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Definium Therapeutics Inc. June 10, 202499.2%
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Definium Therapeutics Inc. June 21, 202385.0%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Oct 1, 2026 | Celcuity Inc. | Grant or award | +893 | — | — |
| Jun 11, 2026 | Definium Therapeutics Inc. | Grant or award | +4,666 | — | — |
| Dec 5, 2024 | Definium Therapeutics Inc. | Open-market purchase | +2,500 | $7.17 | $17,925 |
| Aug 23, 2024 | Definium Therapeutics Inc. | Open-market purchase | +3,500 | $5.98 | $20,930 |
| Jun 21, 2023 | Definium Therapeutics Inc. | Grant or award | +13,851 | — | — |
Questions about David W. Gryska
What boards is David W. Gryska on?
David W. Gryska sits on the boards of Celcuity Inc. and Definium Therapeutics Inc.
How long has David W. Gryska served on boards?
Our records show at least 4 years of board service across 2 boards, the earliest from 2023.
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