Slingsby Brian Taylor — SEC Form 4 filings
SEC reporting owner CIK 1963901. 7 Form 4 filings on record with FilingPulse; latest filed 2026-02-20.
Transaction summary — filings shown
Covers all 7 filings on record, filed 2024-05-23 to 2026-02-20. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 1 leg across 1 filing — 259,259 shares, $3,499,996 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 2 legs across 2 filings — 1,550,000 shares, $50,527,500 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 12.
- Largest priced transaction: sale of 1,000,000 shares @ $43.35 ($43,350,000) in Mineralys Therapeutics, Inc., filed 2025-11-21.
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 |
|---|---|---|---|---|---|
| Mineralys Therapeutics, Inc. (MLYS) | Director, 10% owner | 7 | 1 leg · 259,259 sh · $3,499,996 | 2 legs · 1,550,000 sh · $50,527,500 | 12 |
Form 4 filings — Slingsby Brian Taylor
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-02-20 | 4 | Mineralys Therapeutics, Inc. (MLYS) | Grant/award (A): 6,200 @ $0 · Other (J): 6,200 @ $0 · Other (J): 6,200 @ $0 · Grant/award (A): 8,300 (derivative) @ $0 · Other (J): 8,300 (derivative) @ $0 · Other (J): 8,300 (derivative) @ $0 | EDGAR |
| 2025-11-21 | 4 | Mineralys Therapeutics, Inc. (MLYS) jointly with Catalys Pacific Fund, LP | Sale (S): 1,000,000 @ $43.35 | EDGAR |
| 2025-04-25 | 4 | Mineralys Therapeutics, Inc. (MLYS) jointly with Catalys Pacific Fund, LP | Purchase (P): 259,259 @ $13.50 | EDGAR |
| 2025-02-24 | 4 | Mineralys Therapeutics, Inc. (MLYS) jointly with Catalys Pacific Fund, LP | Grant/award (A): 32,900 (derivative) @ $0 · Other (J): 32,900 (derivative) @ $0 · Other (J): 32,900 (derivative) @ $0 | EDGAR |
| 2025-01-07 | 4 | Mineralys Therapeutics, Inc. (MLYS) jointly with Catalys Pacific Fund, LP | Other (J): 22,000 (derivative) @ $0 · Other (J): 22,000 (derivative) @ $0 | EDGAR |
| 2024-07-26 | 4 | Mineralys Therapeutics, Inc. (MLYS) jointly with Catalys Pacific Fund, LP | Sale (S): 550,000 @ $13.05 | EDGAR |
| 2024-05-23 | 4 | Mineralys Therapeutics, Inc. (MLYS) jointly with Catalys Pacific Fund, LP | Grant/award (A): 22,000 (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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