Alector, Inc (ALEC) insider trading
Every open-market stock purchase and sale by Alector, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Arnon Rosenthal (CEO) and 2 others sold $296K in the last 90 days.
- Last insider buy: David M. Wehner (Director), $500K, 6 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $1M (18 sales). Last close $1.87 on Oct 21, 2026.
Recent ALEC insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Oct 14, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | — |
| Oct 14, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | — |
| Oct 14, 2026 | Neil Lindsay Berkley (CFO) | Bought (not open market) | — |
| Oct 14, 2026 | Neil Lindsay Berkley (CFO) | Bought (not open market) | — |
| Oct 14, 2026 | Grace Wong-Sarad (Insider) | Bought (not open market) | — |
| Oct 14, 2026 | Grace Wong-Sarad (Insider) | Bought (not open market) | — |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Sold (not open market) | $9.9M |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Sold (not open market) | $8.9M |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Sold (not open market) | $4.7M |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Sold (not open market) | $4.1M |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Sold (not open market) | $2.8M |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Sold (not open market) | $1.1M |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | $972K |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | $935K |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Sold (not open market) | $859K |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | $855K |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | $780K |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | $514K |
| Oct 13, 2026 | Grace Wong-Sarad (Insider) | Sold (not open market) | $329K |
| Oct 13, 2026 | Grace Wong-Sarad (Insider) | Sold (not open market) | $274K |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | $248K |
| Oct 13, 2026 | Grace Wong-Sarad (Insider) | Sold (not open market) | $237K |
| Oct 13, 2026 | Arnon Rosenthal (CEO) | Bought (not open market) | $223K |
| Oct 13, 2026 | Grace Wong-Sarad (Insider) | Sold (not open market) | $209K |
| Oct 13, 2026 | Grace Wong-Sarad (Insider) | Sold (not open market) | $139K |
Who's trading ALEC
- Neil Lindsay Berkley, CFO: sold $221K (4 sales), last Oct 14, 2026
- Arnon Rosenthal, CEO: sold $656K (4 sales), last Oct 14, 2026
- Grace Wong-Sarad, Insider: sold $99.1K (12 sales), last Oct 14, 2026
- Paula Hammond, Insider: other filings, last Jun 17, 2026
- Louis J Lavigne Jr, Insider: other filings, last Jun 17, 2026
- Kristine Yaffe, Insider: other filings, last Jun 17, 2026
- Errol B Desouza, Insider: other filings, last Jun 17, 2026
- Elizabeth A. Garofalo, Insider: other filings, last Jun 17, 2026
- Richard H Scheller, Insider: other filings, last Jun 17, 2026
- Mark Altmeyer, Insider: other filings, last Jun 17, 2026
- Sara Kenkare-Mitra, President: sold $46.7K (1 sale), last Dec 3, 2025
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