Alector, Inc. (ALEC) has 133 open-market insider trades by 20 insiders since 2019. Over the last six months insiders net sold $482K. The most active filer is Robert Paul.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Orbimed Advisors LLC | 10% Owner | — | 10 | $142.0M | 2020-04-16 |
| OrbiMed Capital GP IV LLC | 10% Owner | — | 1 | $23.3M | 2019-08-07 |
| Arnon Rosenthal | CEO | — | 21 | $15.5M | 2026-10-14 |
| Orbimed Capital LLC | 10% Owner | — | 1 | $13.0M | 2020-01-09 |
| Robert Paul | — | — | 29 | $11.9M | 2021-08-09 |
| Carl L. Gordon | Dir10% Owner | — | 1 | $7.8M | 2019-02-11 |
| Shehnaaz Suliman | PresCOO | — | 2 | $6.6M | 2021-12-13 |
| Calvin Yu | PresVP | — | 3 | $6.6M | 2021-07-06 |
| Robert King | — | — | 10 | $3.3M | 2022-10-01 |
| Terrance McGuire | Dir10% Owner | — | 2 | $3.3M | 2023-09-11 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Neil Lindsay Berkley | CFO | Sell | $78K | 2026-09-03 |
| Arnon Rosenthal | CEO | Sell | $193K | 2026-09-03 |
| Grace Wong-Sarad | CAO | Sell | $25K | 2026-09-02 |
| Arnon Rosenthal | CEO | Sell | $172K | 2026-06-02 |
| Grace Wong-Sarad | CAO | Sell | $18K | 2026-06-02 |
| Neil Lindsay Berkley | CFO | Sell | $38K | 2026-06-02 |
Companies that share insiders with ALEC, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Grace Wong-Sarad | CAO | Sell | $5K | 2026-04-16 |
| Grace Wong-Sarad | Principal Accounting Officer | Sell | $3K | 2026-03-10 |
| Grace Wong-Sarad | Principal Accounting Officer | Sell | $7K | 2026-03-03 |
| Arnon Rosenthal | CEO | Sell | $174K | 2026-03-02 |
| Grace Wong-Sarad | Principal Accounting Officer | Sell | $17K | 2026-03-02 |
| Neil Lindsay Berkley | CFO & Chief Business Officer | Sell | $63K | 2026-03-02 |
| Grace Wong-Sarad | Principal Accounting Officer | Sell | $10K | 2026-02-26 |
| Grace Wong-Sarad | Principal Accounting Officer | Sell | $6K | 2025-12-05 |
| Grace Wong-Sarad | Principal Accounting Officer | Sell | $9K | 2025-12-03 |