Rosenthal Arnon — SEC Form 4 filings
SEC reporting owner CIK 1757770. 16 Form 4 filings on record with FilingPulse; latest filed 2026-09-04.
Transaction summary — filings shown
Covers all 16 filings on record, filed 2024-03-05 to 2026-09-04. 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): 11 legs across 11 filings — 612,655 shares, $1,425,775 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 10.
- Largest priced transaction: sale of 72,606 shares @ $2.66 ($193,473) in Alector, Inc., filed 2026-09-04.
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 |
|---|---|---|---|---|---|
| Alector, Inc. (ALEC) | Chief Executive Officer, Director | 16 | — | 11 legs · 612,655 sh · $1,425,775 | 10 |
Form 4 filings — Rosenthal Arnon
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-04 | 4 | Alector, Inc. (ALEC) | Sale (S): 72,606 @ $2.66 | EDGAR |
| 2026-08-21 | 4 | Alector, Inc. (ALEC) | Gift (G): 1,050,000 @ $0 · Gift (G): 350,000 @ $0 · Gift (G): 350,000 @ $0 · Gift (G): 350,000 @ $0 | EDGAR |
| 2026-06-03 | 4 | Alector, Inc. (ALEC) | Sale (S): 87,216 @ $1.97 | EDGAR |
| 2026-03-13 | 4 | Alector, Inc. (ALEC) | Grant/award (A): 116,246 @ $0 | EDGAR |
| 2026-03-03 | 4 | Alector, Inc. (ALEC) | Sale (S): 81,864 @ $2.12 | EDGAR |
| 2025-12-03 | 4 | Alector, Inc. (ALEC) | Sale (S): 104,347 @ $1.12 | EDGAR |
| 2025-11-12 | 4 | Alector, Inc. (ALEC) | Grant/award (A): 174,167 @ $0 · Grant/award (A): 522,500 (derivative) @ $0 | EDGAR |
| 2025-09-04 | 4 | Alector, Inc. (ALEC) | Sale (S): 51,562 @ $2.50 | EDGAR |
| 2025-07-01 | 4 | Alector, Inc. (ALEC) | Grant/award (A): 137,125 @ $0 · Grant/award (A): 45,700 (derivative) @ $0 | EDGAR |
| 2025-06-04 | 4 | Alector, Inc. (ALEC) | Sale (S): 52,087 @ $1.34 | EDGAR |
| 2025-03-05 | 4 | Alector, Inc. (ALEC) | Sale (S): 40,330 @ $1.47 | EDGAR |
| 2024-12-03 | 4 | Alector, Inc. (ALEC) | Sale (S): 52,172 @ $2.52 | EDGAR |
| 2024-10-02 | 4 | Alector, Inc. (ALEC) | Grant/award (A): 610,500 @ $0 | EDGAR |
| 2024-09-04 | 4 | Alector, Inc. (ALEC) | Sale (S): 26,499 @ $4.88 | EDGAR |
| 2024-06-04 | 4 | Alector, Inc. (ALEC) | Sale (S): 25,135 @ $4.80 | EDGAR |
| 2024-03-05 | 4 | Alector, Inc. (ALEC) | Sale (S): 18,837 @ $6.92 | 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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