Mark James Litton
Chief Executive Officer at LeonaBio Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: LeonaBio Inc., 3 years.
Chief executive roles
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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LeonaBio Inc. May 23, 202489.2%
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 |
|---|---|---|---|---|---|
| Mar 4, 2026 | LeonaBio Inc. | Open-market sale | −5,156 | $5.37 | $27,688 |
| Mar 3, 2026 | LeonaBio Inc. | Option exercise | +22,254 | — | — |
| Jan 2, 2026 | LeonaBio Inc. | Open-market sale | −2,586 | $6.88 | $17,792 |
| Dec 31, 2025 | LeonaBio Inc. | Option exercise | +10,834 | — | — |
| Jul 1, 2025 | LeonaBio Inc. | Open-market sale | −25,123 | $0.29 | $7,286 |
| Jun 30, 2025 | LeonaBio Inc. | Option exercise | +108,334 | — | — |
| Jan 2, 2025 | LeonaBio Inc. | Open-market sale | −25,107 | $0.56 | $14,060 |
| Dec 31, 2024 | LeonaBio Inc. | Option exercise | +108,333 | — | — |
| Sep 5, 2024 | LeonaBio Inc. | Open-market sale | −5,032 | $0.57 | $2,868 |
| Sep 3, 2024 | LeonaBio Inc. | Grant or award | +20,000 | — | — |
| Jan 5, 2024 | LeonaBio Inc. | Open-market sale | −4,820 | $2.91 | $14,026 |
| Jan 4, 2024 | LeonaBio Inc. | Grant or award | +20,000 | — | — |
| Nov 18, 2022 | LeonaBio Inc. | Grant or award | +662 | $2.74 | $1,814 |
Questions about Mark James Litton
What boards is Mark James Litton on?
Mark James Litton sits on the board of LeonaBio Inc.
What company is Mark James Litton the CEO of?
Mark James Litton is Chief Executive Officer of LeonaBio Inc.
How long has Mark James Litton served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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