Firestone Karen — SEC Form 4 filings
SEC reporting owner CIK 1969821. 8 Form 4 filings on record with FilingPulse; latest filed 2026-09-02.
Transaction summary — filings shown
Covers all 8 filings on record, filed 2023-12-19 to 2026-09-02. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 4 legs across 4 filings — 65,900 shares, $318,653 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 7.
- Largest priced transaction: purchase of 50,000 shares @ $2.13 ($106,590) in Amylyx Pharmaceuticals, Inc., filed 2024-09-09.
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 |
|---|---|---|---|---|---|
| Amylyx Pharmaceuticals, Inc. (AMLX) | Director | 8 | 4 legs · 65,900 sh · $318,653 | — | 7 |
Form 4 filings — Firestone Karen
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-02 | 4 | Amylyx Pharmaceuticals, Inc. (AMLX) | Option exercise (M): 25,000 @ $1.76 · Option exercise (M): 25,000 @ $5.05 · Option exercise (M): 25,000 (derivative) @ $0 · Option exercise (M): 25,000 (derivative) @ $0 | EDGAR |
| 2026-06-08 | 4 | Amylyx Pharmaceuticals, Inc. (AMLX) | Grant/award (A): 24,372 (derivative) @ $0 | EDGAR |
| 2026-05-26 | 4 | Amylyx Pharmaceuticals, Inc. (AMLX) | Purchase (P): 3,800 @ $13.51 | EDGAR |
| 2025-12-23 | 4 | Amylyx Pharmaceuticals, Inc. (AMLX) | Purchase (P): 8,100 @ $12.45 | EDGAR |
| 2025-06-09 | 4 | Amylyx Pharmaceuticals, Inc. (AMLX) | Grant/award (A): 25,000 (derivative) @ $0 | EDGAR |
| 2024-09-09 | 4 | Amylyx Pharmaceuticals, Inc. (AMLX) | Purchase (P): 50,000 @ $2.13 | EDGAR |
| 2024-06-07 | 4 | Amylyx Pharmaceuticals, Inc. (AMLX) | Grant/award (A): 25,000 (derivative) @ $0 | EDGAR |
| 2023-12-19 | 4 | Amylyx Pharmaceuticals, Inc. (AMLX) | Purchase (P): 4,000 @ $14.97 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2023-12-15 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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