Form 4: Alector CEO Reports Stock Transaction
Insider Transaction (Form 4)
Arnon Rosenthal, Chief Executive Officer and a Director of Alector, Inc., reported multiple transactions in common stock on August 19, 2026.
Summary
- Bona fide gift: disposed of 1,050,000 Common Stock on August 19, 2026; holds 922,875 after (Indirect).
- Bona fide gift: acquired 350,000 Common Stock on August 19, 2026; holds 1,002,500 after (Indirect).
- Bona fide gift: acquired 350,000 Common Stock on August 19, 2026; holds 1,002,500 after (Indirect).
- Bona fide gift: acquired 350,000 Common Stock on August 19, 2026; holds 1,002,500 after (Indirect).
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as routine: the reported changes are grants, option exercises, tax withholding or similar administrative transactions, which carry limited directional signal.
Insider Transactions
Arnon Rosenthal — Director, Officer (Chief Executive Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-19 | Bona fide gift | Common Stock | 1,050,000 | — | — | 922,875 |
| 2026-08-19 | Bona fide gift | Common Stock | 350,000 | — | — | 1,002,500 |
| 2026-08-19 | Bona fide gift | Common Stock | 350,000 | — | — | 1,002,500 |
| 2026-08-19 | Bona fide gift | Common Stock | 350,000 | — | — | 1,002,500 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-19 | Bona fide gift (1,050,000 shares) |
| 2026-08-19 | Bona fide gift (350,000 shares) |
| 2026-08-19 | Bona fide gift (350,000 shares) |
| 2026-08-19 | Bona fide gift (350,000 shares) |
Keywords
insider transaction, Form 4, ALEC, Alector, Inc., neutral, Arnon Rosenthal
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