Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 1 year
- Director since
- 2026
1 year of board service in total across 2 boards, counting each seat separately. Longest: Zura Bio Limited, 8 months.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Zura Bio Limited June 17, 202699.9%
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 |
|---|---|---|---|---|---|
| Feb 25, 2026 | Vir Biotechnology Inc. | Open-market sale | −1,889 | $9.82 | $18,550 |
| Feb 24, 2026 | Vir Biotechnology Inc. | Open-market sale | −1,616 | $9.53 | $15,400 |
| Feb 23, 2026 | Vir Biotechnology Inc. | Open-market sale | −2,089 | $7.45 | $15,563 |
| Feb 22, 2026 | Vir Biotechnology Inc. | Grant or award | +55,000 | — | — |
Questions about Mark Eisner
What boards is Mark Eisner on?
Mark Eisner sits on the boards of Jade Biosciences Inc. and Zura Bio Limited.
How long has Mark Eisner served on boards?
Our records show at least 1 year of board service across 2 boards, the earliest from 2026.
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