Time on boards
- Boards served
- 3
- Current seats
- 3
- Board service
- 10 years
- Director since
- 2023
10 years of board service in total across 3 boards, counting each seat separately. Longest: Mirum Pharmaceuticals 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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Spruce Biosciences Inc. May 21, 202692.1%
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Mirum Pharmaceuticals Inc. May 29, 202585.2%
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Spruce Biosciences Inc. May 25, 202399.6%
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 |
|---|---|---|---|---|---|
| Dec 19, 2025 | Mirum Pharmaceuticals Inc. | Option exercise | +50,000 | $2.94 | $147,000 |
| Dec 19, 2025 | Mirum Pharmaceuticals Inc. | Open-market sale | −50,000 | $78.00 | $3,900,000 |
| Dec 1, 2025 | Mirum Pharmaceuticals Inc. | Option exercise | +50,000 | $2.94 | $147,000 |
| Dec 1, 2025 | Mirum Pharmaceuticals Inc. | Open-market sale | −50,000 | $74.00 | $3,700,000 |
| Nov 21, 2025 | Mirum Pharmaceuticals Inc. | Option exercise | +50,000 | $2.94 | $147,000 |
| Nov 21, 2025 | Mirum Pharmaceuticals Inc. | Open-market sale | −50,000 | $70.00 | $3,500,000 |
| Sep 27, 2024 | Mirum Pharmaceuticals Inc. | Gift | −102,788 | — | — |
| Sep 14, 2023 | Mirum Pharmaceuticals Inc. | Option exercise | +14,216 | $2.94 | $41,795 |
| Sep 14, 2023 | Mirum Pharmaceuticals Inc. | Open-market sale | −14,216 | $32.00 | $454,912 |
| Sep 13, 2023 | Mirum Pharmaceuticals Inc. | Option exercise | +392 | $2.94 | $1,152 |
| Sep 13, 2023 | Mirum Pharmaceuticals Inc. | Open-market sale | −392 | $32.00 | $12,544 |
| Jul 26, 2023 | OnKure Therapeutics Inc. | Gift | −50,000 | — | — |
| Jun 8, 2023 | Mirum Pharmaceuticals Inc. | Option exercise | +14,608 | $2.94 | $42,948 |
| Jun 8, 2023 | Mirum Pharmaceuticals Inc. | Open-market sale | −14,608 | $29.00 | $423,632 |
| May 3, 2023 | Mirum Pharmaceuticals Inc. | Option exercise | +14,608 | $2.94 | $42,948 |
Questions about Michael G. Grey
What boards is Michael G. Grey on?
Michael G. Grey sits on the boards of Mirum Pharmaceuticals Inc., OnKure Therapeutics Inc. and Spruce Biosciences Inc.
How long has Michael G. Grey served on boards?
Our records show at least 10 years of board service across 3 boards, the earliest from 2023.
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