Insider Transactions Reported by 22 Insiders of Alector, Inc.

Symbol
ALEC on Nasdaq
Location
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 $68,200,238 29 May 2024
Terrance McGuire Director, 10%+ Owner $60,653,001 11 Sep 2023
Tillman U. Gerngross Director $14,702,414 14 Jun 2023
Arnon Rosenthal Chief Executive Officer, Director $6,089,567 -$489,102 -7.4% 13 Mar 2026
Robert King Chief Development Officer $3,062,843 01 Oct 2022
Robert Paul Chief Medical Officer $1,302,814 09 Aug 2021
Neil Lindsay Berkley CFO & Chief Business Officer $782,549 -$144,225 -16% 13 Mar 2026
Shehnaaz Suliman President and COO $570,445 10 Dec 2021
Sara Kenkare-Mitra President and Head of R&D $561,649 -$137,666 -20% 03 Dec 2025
David M. Wehner Director $553,434 12 Jun 2024
Gary Romano Chief Medical Officer $488,610 03 Mar 2025
Calvin Yu Vice President, Finance $426,374 02 Jul 2021
Marc Grasso Chief Financial Officer $396,262 -$22,068 -5.3% 02 Jun 2025
Grace Wong-Sarad Principal Accounting Officer $282,132 -$66,523 -19% 10 Mar 2026
Paula Hammond Director $176,560 -$32,998 -16% 26 Aug 2025
Kristine Yaffe Director $137,388 -$1,440 -1% 20 Jun 2025
Louis J. Lavigne Jr. Director $127,554 11 Jun 2025
Richard H. Scheller Director $110,624 11 Jun 2025
Elizabeth A. Garofalo Director $104,342 11 Jun 2025
Mark Altmeyer Director $81,142 11 Jun 2025
Errol B. Desouza Director $81,142 11 Jun 2025
Linda M. Rubinstein Interim Chief Financial Ofcr 08 Sep 2021

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

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Neil Lindsay Berkley ALEC Common Stock Award 15.8% 54,600 399,260 15 Mar 2026 Direct
Arnon Rosenthal ALEC Common Stock Award 4.97% 116,246 2,454,422 13 Mar 2026 Direct
Grace Wong-Sarad ALEC Common Stock Sale -0.93% $2,650 $2.65 -1,000 106,465 10 Mar 2026 Direct
Grace Wong-Sarad ALEC Common Stock Sale -3.04% $7,012 $2.08 -3,367 107,465 03 Mar 2026 Direct
Grace Wong-Sarad ALEC Common Stock Sale -6.79% $17,138 $2.12 -8,071 110,832 02 Mar 2026 Direct
Arnon Rosenthal ALEC Common Stock Sale -3.38% $173,822 $2.12 -81,864 2,338,176 02 Mar 2026 Direct
Neil Lindsay Berkley ALEC Common Stock Sale -7.92% $62,954 $2.12 -29,649 344,660 02 Mar 2026 Direct
Grace Wong-Sarad ALEC Common Stock Sale -3.32% $10,198 $2.50 -4,079 118,903 26 Feb 2026 Direct
Grace Wong-Sarad ALEC Common Stock Sale -3.72% $5,751 $1.21 -4,753 122,982 05 Dec 2025 Direct
Grace Wong-Sarad ALEC Common Stock Sale -5.93% $9,019 $1.12 -8,056 127,735 03 Dec 2025 Direct
Arnon Rosenthal ALEC Common Stock Sale -4.13% $116,827 $1.12 -104,347 2,420,040 03 Dec 2025 Direct
Sara Kenkare-Mitra ALEC Common Stock Sale -7.67% $46,673 $1.12 -41,687 501,652 03 Dec 2025 Direct
Neil Lindsay Berkley ALEC Common Stock Sale -9.05% $41,717 $1.12 -37,261 374,309 03 Dec 2025 Direct
Neil Lindsay Berkley ALEC Common Stock Award 18.8% 65,000 411,570 10 Nov 2025 Direct
Neil Lindsay Berkley ALEC Employee Stock Option (right to buy) Award 195,000 195,000 10 Nov 2025 Direct
Grace Wong-Sarad ALEC Common Stock Award 31.3% 32,343 135,791 10 Nov 2025 Direct
Grace Wong-Sarad ALEC Employee Stock Option (right to buy) Award 48,535 48,535 10 Nov 2025 Direct
Arnon Rosenthal ALEC Common Stock Award 7.41% 174,167 2,524,387 10 Nov 2025 Direct
Arnon Rosenthal ALEC Employee Stock Option (right to buy) Award 522,500 522,500 10 Nov 2025 Direct
Grace Wong-Sarad ALEC Common Stock Sale -5.4% $14,756 $2.50 -5,910 103,448 02 Sep 2025 Direct
Neil Lindsay Berkley ALEC Common Stock Sale -4.37% $39,554 $2.50 -15,842 346,570 02 Sep 2025 Direct
Sara Kenkare-Mitra ALEC Common Stock Sale -4.17% $59,019 $2.50 -23,638 543,339 02 Sep 2025 Direct
Arnon Rosenthal ALEC Common Stock Sale -2.15% $128,740 $2.50 -51,562 2,350,220 02 Sep 2025 Direct
Paula Hammond ALEC Common Stock Sale -15.8% $32,998 $2.36 -14,000 74,909 26 Aug 2025 Direct
Neil Lindsay Berkley ALEC Employee Stock Option (right to buy) Award 18,000 18,000 01 Jul 2025 Direct
Sara Kenkare-Mitra ALEC Common Stock Award 10.7% 54,725 566,977 01 Jul 2025 Direct
Sara Kenkare-Mitra ALEC Employee Stock Option (right to buy) Award 18,250 18,250 01 Jul 2025 Direct
Arnon Rosenthal ALEC Common Stock Award 5.68% 137,125 2,551,782 01 Jul 2025 Direct
Arnon Rosenthal ALEC Employee Stock Option (right to buy) Award 45,700 45,700 01 Jul 2025 Direct
Kristine Yaffe ALEC Common Stock Sale -1.04% $1,440 $1.44 -1,000 95,409 20 Jun 2025 Direct
Paula Hammond ALEC Common Stock Award 47.7% 28,700 88,909 11 Jun 2025 Direct
Paula Hammond ALEC Stock Option (right to buy) Award 9,450 9,450 11 Jun 2025 Direct
Kristine Yaffe ALEC Common Stock Award 42.4% 28,700 96,409 11 Jun 2025 Direct
Kristine Yaffe ALEC Stock Option (right to buy) Award 9,450 9,450 11 Jun 2025 Direct
Elizabeth A. Garofalo ALEC Common Stock Award 46.9% 28,700 89,950 11 Jun 2025 Direct
Elizabeth A. Garofalo ALEC Stock Option (right to buy) Award 9,450 9,450 11 Jun 2025 Direct
Richard H. Scheller ALEC Common Stock Award 43% 28,700 95,366 11 Jun 2025 Direct
Richard H. Scheller ALEC Stock Option (right to buy) Award 9,450 9,450 11 Jun 2025 Direct
Louis J. Lavigne Jr. ALEC Common Stock Award 40.6% 28,700 99,409 11 Jun 2025 Direct
Louis J. Lavigne Jr. ALEC Stock Option (right to buy) Award 9,450 9,450 11 Jun 2025 Direct
Errol B. Desouza ALEC Common Stock Award 69.6% 28,700 69,950 11 Jun 2025 Direct
Errol B. Desouza ALEC Stock Option (right to buy) Award 9,450 9,450 11 Jun 2025 Direct
Mark Altmeyer ALEC Common Stock Award 69.6% 28,700 69,950 11 Jun 2025 Direct
Mark Altmeyer ALEC Stock Option (right to buy) Award 9,450 9,450 11 Jun 2025 Direct
Marc Grasso ALEC Common Stock Sale -5.28% $22,068 $1.34 -16,488 296,072 02 Jun 2025 Direct
Sara Kenkare-Mitra ALEC Common Stock Sale -4.46% $31,974 $1.34 -23,890 512,252 02 Jun 2025 Direct
Arnon Rosenthal ALEC Common Stock Sale -2.11% $69,713 $1.34 -52,087 2,414,657 02 Jun 2025 Direct
Richard H. Scheller ALEC Common Stock Award 31.2% 15,833 66,666 02 May 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.