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: Coherus Oncology 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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Starling Oncology Inc. June 17, 202694.2%
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 |
|---|---|---|---|---|---|
| Jul 27, 2026 | Starling Oncology Inc. | Grant or award | +31,124 | — | — |
| Jul 7, 2026 | Starling Oncology Inc. | Grant or award | +25,833 | — | — |
| Mar 3, 2026 | RadNet Inc. | Grant or award | +18,228 | — | — |
| Dec 10, 2025 | RadNet Inc. | Option exercise | +35,703 | $6.07 | $216,717 |
| Sep 16, 2025 | RadNet Inc. | Open-market sale | −35,000 | $73.89 | $2,586,150 |
| Jan 8, 2025 | RadNet Inc. | Grant or award | +22,889 | — | — |
| Dec 16, 2024 | RadNet Inc. | Gift | −275 | — | — |
| Jun 10, 2024 | RadNet Inc. | Open-market sale | −25,000 | $61.27 | $1,531,750 |
| Mar 1, 2024 | RadNet Inc. | Grant or award | +14,072 | — | — |
| May 12, 2023 | RadNet Inc. | Gift | −900 | — | — |
| May 4, 2023 | RadNet Inc. | Gift | −375 | — | — |
Questions about Mark Stolper
What boards is Mark Stolper on?
Mark Stolper sits on the boards of Coherus Oncology Inc. and Starling Oncology Inc.
How long has Mark Stolper served on boards?
Our records show at least 4 years of board service across 2 boards, the earliest from 2023.
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