Rosenthal Arnon 4
4 · Alector, Inc. · Filed Nov 12, 2025
Insider Transaction Report
Form 4
Alector, Inc.ALEC
Rosenthal Arnon
DirectorChief Executive Officer
Transactions
- Award
Common Stock
2025-11-10+174,167→ 2,524,387 total - Award
Employee Stock Option (right to buy)
2025-11-10+522,500→ 522,500 totalExercise: $1.31Exp: 2035-11-09→ Common Stock (522,500 underlying)
Holdings
- 1,972,875(indirect: See footnote)
Common Stock
- 652,500(indirect: See footnote)
Common Stock
- 652,500(indirect: See footnote)
Common Stock
- 652,500(indirect: See footnote)
Common Stock
Footnotes (6)
- [F1]The reported shares are represented by restricted stock units, or RSUs, which vest in 12 equal quarterly installments beginning on December 1, 2025.
- [F2]The reported securities are held directly by The Rosenthal Family Revocable Trust Dated November 4, 1994, as restated on June 9, 1999, for which the Reporting Person serves as trustee.
- [F3]The reported securities are held directly by the Adi Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
- [F4]The reported securities are held directly by the Noam Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
- [F5]The reported securities are held directly by the Shani Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
- [F6]Shares subject to the option vest in 48 equal monthly installments beginning on December 10, 2025.