John D. Quisel
Chief Executive Officer at Disc Medicine Inc.
Sits on 2 boards. Last updated September 27, 2026
Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 7 years
- Director since
- 2022
7 years of board service in total across 2 boards, counting each seat separately. Longest: Disc Medicine 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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Disc Medicine Inc. June 18, 202698.6%
-
Gossamer Bio Inc. June 6, 202499.4%
-
Disc Medicine Inc. June 9, 2023100.0%
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 |
|---|---|---|---|---|---|
| Sep 15, 2026 | Disc Medicine Inc. | Option exercise | +36,000 | $1.01 | $36,360 |
| Aug 17, 2026 | Disc Medicine Inc. | Option exercise | +33,000 | $13.50 | $445,500 |
| Aug 17, 2026 | Disc Medicine Inc. | Open-market sale | −8,400 | $78.11 | $656,091 |
| Aug 17, 2026 | Disc Medicine Inc. | Open-market sale | −12,712 | $79.20 | $1,006,729 |
| Aug 17, 2026 | Disc Medicine Inc. | Open-market sale | −11,888 | $79.84 | $949,162 |
| Jul 13, 2026 | Disc Medicine Inc. | Option exercise | +25,584 | $9.86 | $252,258 |
| Jul 13, 2026 | Disc Medicine Inc. | Option exercise | +7,416 | $13.50 | $100,116 |
| Jul 13, 2026 | Disc Medicine Inc. | Open-market sale | −9,704 | $74.27 | $720,744 |
| Jul 13, 2026 | Disc Medicine Inc. | Open-market sale | −16,896 | $74.95 | $1,266,303 |
| Jul 13, 2026 | Disc Medicine Inc. | Open-market sale | −6,400 | $76.05 | $486,733 |
| Jun 18, 2026 | Disc Medicine Inc. | Option exercise | +34,000 | $9.86 | $335,240 |
| Jun 18, 2026 | Disc Medicine Inc. | Open-market sale | −22,927 | $69.92 | $1,603,056 |
| Jun 18, 2026 | Disc Medicine Inc. | Open-market sale | −9,522 | $70.70 | $673,205 |
| Jun 18, 2026 | Disc Medicine Inc. | Open-market sale | −1,551 | $71.61 | $111,067 |
| Feb 17, 2026 | Disc Medicine Inc. | Open-market sale | −13,264 | $62.86 | $833,775 |
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