Quisel John D — SEC Form 4 filings
SEC reporting owner CIK 1586788. 22 Form 4 filings on record with FilingPulse; latest filed 2026-09-16.
Transaction summary — filings shown
Covers all 22 filings on record, filed 2024-03-01 to 2026-09-16. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 27 legs across 11 filings — 244,461 shares, $17,446,701 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 41.
- Largest priced transaction: sale of 31,207 shares @ $55.23 ($1,723,600) in Disc Medicine, Inc., filed 2025-07-11.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Disc Medicine, Inc. (IRON) | Chief Executive Officer, Director | 19 | — | 27 legs · 244,461 sh · $17,446,701 | 38 |
| Gossamer Bio, Inc. (GOSS) | Director | 3 | — | — | 3 |
Form 4 filings — Quisel John D
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-16 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 36,000 @ $1.01 · Option exercise (M): 36,000 (derivative) @ $0 | EDGAR |
| 2026-08-18 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 33,000 @ $13.50 · Sale (S): 8,400 @ $78.11 · Sale (S): 12,712 @ $79.20 · Sale (S): 11,888 @ $79.84 · Option exercise (M): 33,000 (derivative) @ $0 | EDGAR |
| 2026-07-14 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 25,584 @ $9.86 · Option exercise (M): 7,416 @ $13.50 · Sale (S): 9,704 @ $74.27 · Sale (S): 16,896 @ $74.95 · Sale (S): 6,400 @ $76.05 · Option exercise (M): 25,584 (derivative) @ $0 · +1 more | EDGAR |
| 2026-06-23 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 34,000 @ $9.86 · Sale (S): 22,927 @ $69.92 · Sale (S): 9,522 @ $70.70 · Sale (S): 1,551 @ $71.61 · Option exercise (M): 34,000 (derivative) @ $0 | EDGAR |
| 2026-06-05 | 4 | Gossamer Bio, Inc. (GOSS) | Grant/award (A): 115,000 (derivative) @ $0 | EDGAR |
| 2026-02-17 | 4 | Disc Medicine, Inc. (IRON) | Sale (S): 13,264 @ $62.86 | EDGAR |
| 2026-02-11 | 4 | Disc Medicine, Inc. (IRON) | Grant/award (A): 55,200 @ $0 · Grant/award (A): 82,800 (derivative) @ $0 | EDGAR |
| 2025-12-19 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 12,300 @ $1.01 · Option exercise (M): 12,300 (derivative) @ $0 | EDGAR |
| 2025-12-15 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 40,000 @ $9.86 · Sale (S): 2,419 @ $90.97 · Sale (S): 4,337 @ $92.21 · Sale (S): 16,356 @ $92.96 · Sale (S): 16,888 @ $93.65 · Option exercise (M): 40,000 (derivative) @ $0 | EDGAR |
| 2025-09-11 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 10,000 @ $1.01 · Option exercise (M): 10,000 (derivative) @ $0 | EDGAR |
| 2025-07-11 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 34,800 @ $9.86 · Sale (S): 31,207 @ $55.23 · Sale (S): 3,593 @ $56.20 · Option exercise (M): 34,800 (derivative) @ $0 | EDGAR |
| 2025-07-08 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 5,200 @ $9.86 · Sale (S): 5,200 @ $55.09 · Option exercise (M): 5,200 (derivative) @ $0 | EDGAR |
| 2025-06-26 | 4 | Gossamer Bio, Inc. (GOSS) | Grant/award (A): 115,000 (derivative) @ $0 | EDGAR |
| 2025-04-08 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 7,000 @ $1.01 · Option exercise (M): 7,000 (derivative) @ $0 | EDGAR |
| 2025-02-20 | 4 | Disc Medicine, Inc. (IRON) | Sale (S): 5,574 @ $54.58 | EDGAR |
| 2025-02-12 | 4 | Disc Medicine, Inc. (IRON) | Grant/award (A): 78,337 @ $0 · Grant/award (A): 117,505 (derivative) @ $0 | EDGAR |
| 2025-01-02 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 13,012 @ $9.86 · Sale (S): 11,112 @ $61.87 · Sale (S): 1,900 @ $62.41 · Option exercise (M): 10,000 @ $1.01 · Option exercise (M): 13,012 (derivative) @ $0 · Option exercise (M): 10,000 (derivative) @ $0 | EDGAR |
| 2024-12-26 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 19,820 @ $2.65 · Sale (S): 3,414 @ $62.38 · Sale (S): 12,194 @ $63.12 · Sale (S): 4,212 @ $63.80 · Option exercise (M): 19,820 (derivative) @ $0 | EDGAR |
| 2024-12-18 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 12,791 @ $1.01 · Sale (S): 219 @ $64.66 · Sale (S): 5,767 @ $65.58 · Sale (S): 6,305 @ $66.35 · Sale (S): 500 @ $67.20 · Option exercise (M): 12,791 (derivative) @ $0 | EDGAR |
| 2024-07-10 | 4 | Disc Medicine, Inc. (IRON) | Option exercise (M): 3,000 @ $1.01 · Option exercise (M): 3,000 (derivative) @ $0 | EDGAR |
| 2024-06-06 | 4 | Gossamer Bio, Inc. (GOSS) | Grant/award (A): 115,000 (derivative) @ $0 | EDGAR |
| 2024-03-01 | 4 | Disc Medicine, Inc. (IRON) | Grant/award (A): 66,365 @ $0 · Grant/award (A): 99,550 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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