ALECTOR INC (ALEC) — insider trading
Health Care · NASDAQ
ALECTOR INC (ALEC) has 30 reported SEC Form 4 insider transactions in our data, including 10 open-market sales among the most recent 30 (latest 2026-09-04).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-04 | Wong-Sarad Grace | Officer (Principal Accounting Officer) | Open-market sale | 3,625 | $2.51 | $9.1K | Form 4 |
| 2026-09-03 | Wong-Sarad Grace | Officer (Principal Accounting Officer) | Open-market sale | 5,165 | $2.67 | $13.8K | Form 4 |
| 2026-09-03 | Rosenthal Arnon | Director, Officer (Chief Executive Officer) | Open-market sale | 72,606 | $2.66 | $193.5K | Form 4 |
| 2026-09-03 | Berkley Neil Lindsay | Officer (CFO & Chief Business Officer) | Open-market sale | 29,251 | $2.66 | $77.9K | Form 4 |
| 2026-09-02 | Wong-Sarad Grace | Officer (Principal Accounting Officer) | Open-market sale | 656 | $2.75 | $1.8K | Form 4 |
| 2026-08-19 | Rosenthal Arnon | Director, Officer (Chief Executive Officer) | Bona fide gift | 350,000 | — | $0 | Form 4 |
| 2026-08-19 | Rosenthal Arnon | Director, Officer (Chief Executive Officer) | Bona fide gift | 350,000 | — | $0 | Form 4 |
| 2026-08-19 | Rosenthal Arnon | Director, Officer (Chief Executive Officer) | Bona fide gift | 350,000 | — | $0 | Form 4 |
| 2026-08-19 | Rosenthal Arnon | Director, Officer (Chief Executive Officer) | Bona fide gift | 1,050,000 | — | $0 | Form 4 |
| 2026-07-09 | Wong-Sarad Grace | Officer (Principal Accounting Officer) | Grant / award / vesting | 20,000 | — | $0 | Form 4 |
| 2026-06-17 | LAVIGNE LOUIS J JR | Director | Grant / award / vesting (derivative) | 9,450 | — | $0 | Form 4 |
| 2026-06-17 | LAVIGNE LOUIS J JR | Director | Grant / award / vesting | 28,700 | — | $0 | Form 4 |
| 2026-06-17 | DESOUZA ERROL B | Director | Grant / award / vesting (derivative) | 9,450 | — | $0 | Form 4 |
| 2026-06-17 | DESOUZA ERROL B | Director | Grant / award / vesting | 28,700 | — | $0 | Form 4 |
| 2026-06-17 | Altmeyer Mark | Director | Grant / award / vesting (derivative) | 9,450 | — | $0 | Form 4 |
| 2026-06-17 | Altmeyer Mark | Director | Grant / award / vesting | 28,700 | — | $0 | Form 4 |
| 2026-06-17 | GAROFALO ELIZABETH A. | Director | Grant / award / vesting (derivative) | 9,450 | — | $0 | Form 4 |
| 2026-06-17 | GAROFALO ELIZABETH A. | Director | Grant / award / vesting | 28,700 | — | $0 | Form 4 |
| 2026-06-17 | Hammond Paula | Director | Grant / award / vesting (derivative) | 9,450 | — | $0 | Form 4 |
| 2026-06-17 | Hammond Paula | Director | Grant / award / vesting | 28,700 | — | $0 | Form 4 |
| 2026-06-17 | SCHELLER RICHARD H | Director | Grant / award / vesting (derivative) | 9,450 | — | $0 | Form 4 |
| 2026-06-17 | SCHELLER RICHARD H | Director | Grant / award / vesting | 28,700 | — | $0 | Form 4 |
| 2026-06-17 | Yaffe Kristine | Director | Grant / award / vesting (derivative) | 9,450 | — | $0 | Form 4 |
| 2026-06-17 | Yaffe Kristine | Director | Grant / award / vesting | 28,700 | — | $0 | Form 4 |
| 2026-06-03 | Wong-Sarad Grace | Officer (Principal Accounting Officer) | Open-market sale | 3,475 | $1.88 | $6.5K | Form 4 |
| 2026-06-02 | Berkley Neil Lindsay | Officer (CFO & Chief Business Officer) | Open-market sale | 19,360 | $1.97 | $38.2K | Form 4 |
| 2026-06-02 | Wong-Sarad Grace | Officer (Principal Accounting Officer) | Open-market sale | 5,709 | $1.97 | $11.3K | Form 4 |
| 2026-06-02 | Rosenthal Arnon | Director, Officer (Chief Executive Officer) | Open-market sale | 87,216 | $1.97 | $172.2K | Form 4 |
| 2026-06-01 | SCHELLER RICHARD H | Director | Grant / award / vesting | 10,833 | — | $0 | Form 4 |
| 2026-04-16 | Wong-Sarad Grace | Officer (Principal Accounting Officer) | Open-market sale | 1,820 | $2.65 | $4.8K | Form 4 |
Ask the chat about ALEC's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: ALECTOR INC (ALEC).
Last updated 2026-09-04 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.