Alector, Inc.

Ownership Transactions Reported by 22 Insiders

Symbol
ALEC on Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
Location
131 Oyster Point Blvd., Suite 600, South San Francisco, CA

Insiders trading volume in the past year

Alector, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Polaris Venture Management Co. VI, L.L.C. 10%+ Owner $68.2M May 29, 2024
Mcguire Terrance Director, 10%+ Owner $60.7M Sep 11, 2023
Tillman U. Gerngross Director $14.7M Jun 14, 2023
Arnon Rosenthal Chief Executive Officer, Director $9.4M -$389K -3.97% Nov 10, 2025
Robert King Chief Development Officer $3.06M Oct 1, 2022
Robert Paul Chief Medical Officer $1.3M Aug 9, 2021
Neil Lindsay Berkley Chief Bus Ofcr & Interim CFO $1.22M -$39.6K -3.14% Nov 10, 2025
Sara Kenkare-Mitra President and Head of R&D $686K -$200K -22.6% Sep 2, 2025
Shehnaaz Suliman President and COO $570K Dec 10, 2021
David M. Wehner Director $553K Jun 12, 2024
Gary Romano Chief Medical Officer $489K -$61.4K -11.2% Mar 3, 2025
Calvin Yu Vice President, Finance $426K Jul 2, 2021
Grace Wong-Sarad Principal Accounting Officer $402K -$14.8K -3.54% Nov 10, 2025
Marc Grasso Chief Financial Officer $396K -$90.2K -18.5% Jun 2, 2025
Paula Hammond Director $177K -$33K -15.7% Aug 26, 2025
Kristine Yaffe Director $137K -$1.44K -1.04% Jun 20, 2025
Louis J. Lavigne Jr Director $128K Jun 11, 2025
Richard H. Scheller Director $111K Jun 11, 2025
Elizabeth A. Garofalo Director $104K Jun 11, 2025
Mark Altmeyer Director $81.1K Jun 11, 2025
Errol B. Desouza Director $81.1K Jun 11, 2025
Linda M. Rubinstein Interim Chief Financial Ofcr Sep 8, 2021

Recent Insider Transactions by Companies or Individuals for Alector, Inc.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.