InsiderFlow

Alector, Inc.

$2.19-0.04 (-2.02%)

Prev Close

$2.23

Open

$2.24

High

$2.33

Low

$2.13

Volume

513.3K

Market Cap

$241.1M

P/E

Div Yield

Over the past 12 months, insider activity at Alector, Inc. (ALEC) has been exclusively selling, with 0 insider purchases totaling $0.00 and 19 insider sales totaling $901.0K. The most recent insider transaction was by Wong-Sarad Grace (officer: Principal Accounting Officer), who sold $2.6K worth of shares on Mar 12, 2026. Alector, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $241.1M.

Buys (12M)

0

$0.00

Sells (12M)

19

$901.0K

Net Activity

Net Seller

$901.0K

Active Insiders

7

last 12 mo

ALEC Price Chart

ALEC Insider Trading Activity

DateInsiderRoleTypeSharesAvg PriceValueShares After
Mar 12, 2026Wong-Sarad Graceofficer: Principal Accounting OfficerSell1,000$2.65$2.6K106,465
Mar 3, 2026Berkley Neil Lindsayofficer: CFO & Chief Business OfficerSell29,649$2.12$63.0K344,660
Mar 3, 2026Rosenthal Arnondirector, officer: Chief Executive OfficerSell81,864$2.12$173.8K2,338,180
Mar 3, 2026Wong-Sarad Graceofficer: Principal Accounting OfficerSell14,805$2.10$31.2K110,832
Feb 26, 2026Wong-Sarad Graceofficer: Principal Accounting OfficerSell4,079$2.50$10.2K118,903
Dec 5, 2025Wong-Sarad GracePrincipal Accounting OfficerSell4,753$1.21$5.8K0
Dec 3, 2025Berkley Neil LindsayChief Bus Ofcr & Interim CFOSell37,261$1.12$41.7K0
Dec 3, 2025Kenkare-Mitra SaraPresident and Head of R&DSell41,687$1.12$46.7K0
Dec 3, 2025Rosenthal ArnonChief Executive OfficerSell104,347$1.12$116.8K0
Dec 3, 2025Wong-Sarad GracePrincipal Accounting OfficerSell8,056$1.12$9.0K0
Sep 2, 2025Berkley Neil LindsayPrincipal Financial OfficerSell15,842$2.50$39.6K0
Sep 2, 2025Kenkare-Mitra SaraPresident and Head of R&DSell23,638$2.50$59.0K0
Sep 2, 2025Rosenthal ArnonChief Executive OfficerSell51,562$2.50$128.7K0
Sep 2, 2025Wong-Sarad GracePrincipal Accounting OfficerSell5,910$2.50$14.8K0
Aug 26, 2025Hammond PaulaDirectorSell14,000$2.36$33.0K0
Jun 20, 2025Yaffe KristineDirectorSell1,000$1.44$1.4K0
Jun 2, 2025GRASSO MARCChief Financial OfficerSell16,488$1.34$22.1K0
Jun 2, 2025Kenkare-Mitra SaraPresident and Head of R&DSell23,890$1.34$32.0K0
Jun 2, 2025Rosenthal ArnonChief Executive OfficerSell52,087$1.34$69.7K0
Mar 3, 2025GRASSO MARCChief Financial OfficerSell18,091$1.47$26.5K0
Mar 3, 2025Kenkare-Mitra SaraPresident and Head of R&DSell29,073$1.47$42.7K0
Mar 3, 2025Romano GaryChief Medical OfficerSell16,306$1.47$23.9K0
Mar 3, 2025Rosenthal ArnonChief Executive OfficerSell40,330$1.47$59.2K0
Dec 2, 2024GRASSO MARCChief Financial OfficerSell16,489$2.52$41.5K0
Dec 2, 2024Kenkare-Mitra SaraPresident and Head of R&DSell26,500$2.52$66.8K0
Dec 2, 2024Romano GaryChief Medical OfficerSell14,892$2.52$37.5K0
Dec 2, 2024Rosenthal ArnonChief Executive OfficerSell52,172$2.52$131.4K0
Sep 3, 2024GRASSO MARCChief Financial OfficerSell7,297$4.88$35.6K0
Sep 3, 2024Kenkare-Mitra SaraPresident and Head of R&DSell13,926$4.88$68.0K0
Sep 3, 2024Romano GaryChief Medical OfficerSell8,478$4.88$41.4K0
Sep 3, 2024Rosenthal ArnonChief Executive OfficerSell26,499$4.88$129.4K0
Aug 22, 2024SCHELLER RICHARD HDirectorSell44,250$5.16$228.4K0
Aug 12, 2024Hammond PaulaDirectorSell10,500$5.06$53.2K0
Aug 12, 2024Yaffe KristineDirectorSell5,000$5.06$25.3K0
Jun 3, 2024GRASSO MARCChief Financial OfficerSell6,920$4.80$33.2K0
Jun 3, 2024Kenkare-Mitra SaraPresident and Head of R&DSell13,206$4.80$63.4K0
Jun 3, 2024Romano GaryChief Medical OfficerSell8,040$4.80$38.6K0
Jun 3, 2024Rosenthal ArnonChief Executive OfficerSell25,135$4.80$120.6K0
Mar 4, 2024GRASSO MARCChief Financial OfficerSell5,716$6.92$39.6K0
Mar 4, 2024Kenkare-Mitra SaraPresident and Head of R&DSell10,169$6.92$70.4K0
Mar 4, 2024Romano GaryChief Medical OfficerSell6,001$6.92$41.6K0
Mar 4, 2024Rosenthal ArnonChief Executive OfficerSell18,837$6.92$130.4K0
Dec 4, 2023GRASSO MARCChief Financial OfficerSell4,574$5.56$25.4K0
Dec 4, 2023Kenkare-Mitra SaraPresident and Head of R&DSell12,519$5.56$69.6K0
Dec 4, 2023Romano GaryChief Medical OfficerSell5,035$5.56$28.0K0
Dec 4, 2023Rosenthal ArnonChief Executive OfficerSell23,831$5.56$132.5K0
Sep 11, 2023MCGUIRE TERRANCEDirectorSell500,000$6.00$3.00M0
Sep 5, 2023GRASSO MARCChief Financial OfficerSell1,114$5.19$5.8K0
Sep 5, 2023Kenkare-Mitra SaraPresident and Head of R&DSell6,214$5.19$32.3K0
Sep 5, 2023Romano GaryChief Medical OfficerSell2,771$5.19$14.4K0
Sep 5, 2023Rosenthal ArnonChief Executive OfficerSell5,647$5.19$29.3K0
Jun 2, 2023GRASSO MARCChief Financial OfficerSell1,050$6.90$7.2K0
Jun 2, 2023Kenkare-Mitra SaraPresident and Head of R&DSell4,092$6.90$28.2K0
Jun 2, 2023Romano GaryChief Medical OfficerSell2,617$6.90$18.1K0
Jun 2, 2023Rosenthal ArnonChief Executive OfficerSell5,255$6.90$36.3K0
Mar 3, 2023Rosenthal ArnonChief Executive OfficerSell15,186$6.22$94.4K0
Mar 2, 2023GRASSO MARCChief Financial OfficerSell1,291$8.32$10.7K0
Mar 2, 2023Kenkare-Mitra SaraPresident and Head of R&DSell10,124$8.32$84.2K0
Mar 2, 2023Rosenthal ArnonChief Executive OfficerSell5,849$8.32$48.7K0
Dec 2, 2022Romano GaryChief Medical OfficerSell5,383$8.47$45.6K0
Sep 2, 2022King RobertChief Development OfficerSell176$10.62$1.9K0
Sep 2, 2022Romano GaryChief Medical OfficerSell2,177$10.62$23.1K0
Jun 2, 2022King RobertChief Development OfficerSell177$8.71$1.5K0
Mar 1, 2022King RobertChief Development OfficerSell287$15.57$4.5K0
Dec 10, 2021SULIMAN SHEHNAAZPresident and COOSell150,000$21.50$3.23M0
Dec 8, 2021SULIMAN SHEHNAAZPresident and COOSell150,000$22.81$3.42M0
Dec 1, 2021King RobertChief Development OfficerSell250$20.09$5.0K0
Nov 10, 2021Rosenthal ArnonChief Executive OfficerSell110,000$25.00$2.75M0
Nov 8, 2021Rosenthal ArnonChief Executive OfficerSell200,000$25.00$5.00M0
Nov 4, 2021Rosenthal ArnonChief Executive OfficerSell200,000$25.00$5.00M0
Sep 22, 2021Rosenthal ArnonChief Executive OfficerSell109,625$25.31$2.77M0
Sep 20, 2021Rosenthal ArnonChief Executive OfficerSell200,000$25.96$5.19M0
Aug 9, 2021Paul RobertChief Medical OfficerSell22,950$27.18$623.8K0
Jul 6, 2021Paul RobertChief Medical OfficerSell59,749$38.00$2.27M0
Jul 2, 2021King RobertChief Development OfficerSell60,000$31.14$1.87M0
Jul 2, 2021SCHELLER RICHARD HDirectorSell66,241$28.20$1.87M0
Jul 2, 2021Yu CalvinVice President, FinanceSell114,174$32.80$3.74M0
Jul 1, 2021Paul RobertChief Medical OfficerSell56,726$26.94$1.53M0
Jun 15, 2021Paul RobertChief Medical OfficerSell34,600$22.08$764.0K0
Jun 8, 2021Paul RobertChief Medical OfficerSell19,175$19.18$367.7K0
Jun 2, 2021Yu CalvinVice President, FinanceSell1,844$17.77$32.8K0
May 21, 2021Paul RobertChief Medical OfficerSell14,975$18.14$271.7K0
May 18, 2021Paul RobertChief Medical OfficerSell4,200$18.04$75.8K0
Apr 7, 2021Paul RobertChief Medical OfficerSell22,300$19.20$428.1K0
Mar 22, 2021Paul RobertChief Medical OfficerSell43,800$22.74$995.9K0
Mar 9, 2021Paul RobertChief Medical OfficerSell19,175$18.12$347.4K0

ALEC Insider Buying Activity

The following table shows recent insider purchases of Alector, Inc. (ALEC) stock reported via SEC Form 4 filings.

No insider buying activity found for ALEC in the last 12 months.

ALEC Insider Selling Activity

The following table shows recent insider sales of Alector, Inc. (ALEC) stock reported via SEC Form 4 filings.

DateInsiderRoleTypeSharesAvg PriceValueShares After
Mar 12, 2026Wong-Sarad Graceofficer: Principal Accounting OfficerSell1,000$2.65$2.6K106,465
Mar 3, 2026Berkley Neil Lindsayofficer: CFO & Chief Business OfficerSell29,649$2.12$63.0K344,660
Mar 3, 2026Rosenthal Arnondirector, officer: Chief Executive OfficerSell81,864$2.12$173.8K2,338,180
Mar 3, 2026Wong-Sarad Graceofficer: Principal Accounting OfficerSell14,805$2.10$31.2K110,832
Feb 26, 2026Wong-Sarad Graceofficer: Principal Accounting OfficerSell4,079$2.50$10.2K118,903
Dec 5, 2025Wong-Sarad GracePrincipal Accounting OfficerSell4,753$1.21$5.8K0
Dec 3, 2025Berkley Neil LindsayChief Bus Ofcr & Interim CFOSell37,261$1.12$41.7K0
Dec 3, 2025Kenkare-Mitra SaraPresident and Head of R&DSell41,687$1.12$46.7K0
Dec 3, 2025Rosenthal ArnonChief Executive OfficerSell104,347$1.12$116.8K0
Dec 3, 2025Wong-Sarad GracePrincipal Accounting OfficerSell8,056$1.12$9.0K0
Sep 2, 2025Berkley Neil LindsayPrincipal Financial OfficerSell15,842$2.50$39.6K0
Sep 2, 2025Kenkare-Mitra SaraPresident and Head of R&DSell23,638$2.50$59.0K0
Sep 2, 2025Rosenthal ArnonChief Executive OfficerSell51,562$2.50$128.7K0
Sep 2, 2025Wong-Sarad GracePrincipal Accounting OfficerSell5,910$2.50$14.8K0
Aug 26, 2025Hammond PaulaDirectorSell14,000$2.36$33.0K0
Jun 20, 2025Yaffe KristineDirectorSell1,000$1.44$1.4K0
Jun 2, 2025GRASSO MARCChief Financial OfficerSell16,488$1.34$22.1K0
Jun 2, 2025Kenkare-Mitra SaraPresident and Head of R&DSell23,890$1.34$32.0K0
Jun 2, 2025Rosenthal ArnonChief Executive OfficerSell52,087$1.34$69.7K0
Mar 3, 2025GRASSO MARCChief Financial OfficerSell18,091$1.47$26.5K0
Mar 3, 2025Kenkare-Mitra SaraPresident and Head of R&DSell29,073$1.47$42.7K0
Mar 3, 2025Romano GaryChief Medical OfficerSell16,306$1.47$23.9K0
Mar 3, 2025Rosenthal ArnonChief Executive OfficerSell40,330$1.47$59.2K0
Dec 2, 2024GRASSO MARCChief Financial OfficerSell16,489$2.52$41.5K0
Dec 2, 2024Kenkare-Mitra SaraPresident and Head of R&DSell26,500$2.52$66.8K0
Dec 2, 2024Romano GaryChief Medical OfficerSell14,892$2.52$37.5K0
Dec 2, 2024Rosenthal ArnonChief Executive OfficerSell52,172$2.52$131.4K0
Sep 3, 2024GRASSO MARCChief Financial OfficerSell7,297$4.88$35.6K0
Sep 3, 2024Kenkare-Mitra SaraPresident and Head of R&DSell13,926$4.88$68.0K0
Sep 3, 2024Romano GaryChief Medical OfficerSell8,478$4.88$41.4K0
Sep 3, 2024Rosenthal ArnonChief Executive OfficerSell26,499$4.88$129.4K0
Aug 22, 2024SCHELLER RICHARD HDirectorSell44,250$5.16$228.4K0
Aug 12, 2024Hammond PaulaDirectorSell10,500$5.06$53.2K0
Aug 12, 2024Yaffe KristineDirectorSell5,000$5.06$25.3K0
Jun 3, 2024GRASSO MARCChief Financial OfficerSell6,920$4.80$33.2K0
Jun 3, 2024Kenkare-Mitra SaraPresident and Head of R&DSell13,206$4.80$63.4K0
Jun 3, 2024Romano GaryChief Medical OfficerSell8,040$4.80$38.6K0
Jun 3, 2024Rosenthal ArnonChief Executive OfficerSell25,135$4.80$120.6K0
Mar 4, 2024GRASSO MARCChief Financial OfficerSell5,716$6.92$39.6K0
Mar 4, 2024Kenkare-Mitra SaraPresident and Head of R&DSell10,169$6.92$70.4K0
Mar 4, 2024Romano GaryChief Medical OfficerSell6,001$6.92$41.6K0
Mar 4, 2024Rosenthal ArnonChief Executive OfficerSell18,837$6.92$130.4K0
Dec 4, 2023GRASSO MARCChief Financial OfficerSell4,574$5.56$25.4K0
Dec 4, 2023Kenkare-Mitra SaraPresident and Head of R&DSell12,519$5.56$69.6K0
Dec 4, 2023Romano GaryChief Medical OfficerSell5,035$5.56$28.0K0
Dec 4, 2023Rosenthal ArnonChief Executive OfficerSell23,831$5.56$132.5K0
Sep 11, 2023MCGUIRE TERRANCEDirectorSell500,000$6.00$3.00M0
Sep 5, 2023GRASSO MARCChief Financial OfficerSell1,114$5.19$5.8K0
Sep 5, 2023Kenkare-Mitra SaraPresident and Head of R&DSell6,214$5.19$32.3K0
Sep 5, 2023Romano GaryChief Medical OfficerSell2,771$5.19$14.4K0
Sep 5, 2023Rosenthal ArnonChief Executive OfficerSell5,647$5.19$29.3K0
Jun 2, 2023GRASSO MARCChief Financial OfficerSell1,050$6.90$7.2K0
Jun 2, 2023Kenkare-Mitra SaraPresident and Head of R&DSell4,092$6.90$28.2K0
Jun 2, 2023Romano GaryChief Medical OfficerSell2,617$6.90$18.1K0
Jun 2, 2023Rosenthal ArnonChief Executive OfficerSell5,255$6.90$36.3K0
Mar 3, 2023Rosenthal ArnonChief Executive OfficerSell15,186$6.22$94.4K0
Mar 2, 2023GRASSO MARCChief Financial OfficerSell1,291$8.32$10.7K0
Mar 2, 2023Kenkare-Mitra SaraPresident and Head of R&DSell10,124$8.32$84.2K0
Mar 2, 2023Rosenthal ArnonChief Executive OfficerSell5,849$8.32$48.7K0
Dec 2, 2022Romano GaryChief Medical OfficerSell5,383$8.47$45.6K0
Sep 2, 2022King RobertChief Development OfficerSell176$10.62$1.9K0
Sep 2, 2022Romano GaryChief Medical OfficerSell2,177$10.62$23.1K0
Jun 2, 2022King RobertChief Development OfficerSell177$8.71$1.5K0
Mar 1, 2022King RobertChief Development OfficerSell287$15.57$4.5K0
Dec 10, 2021SULIMAN SHEHNAAZPresident and COOSell150,000$21.50$3.23M0
Dec 8, 2021SULIMAN SHEHNAAZPresident and COOSell150,000$22.81$3.42M0
Dec 1, 2021King RobertChief Development OfficerSell250$20.09$5.0K0
Nov 10, 2021Rosenthal ArnonChief Executive OfficerSell110,000$25.00$2.75M0
Nov 8, 2021Rosenthal ArnonChief Executive OfficerSell200,000$25.00$5.00M0
Nov 4, 2021Rosenthal ArnonChief Executive OfficerSell200,000$25.00$5.00M0
Sep 22, 2021Rosenthal ArnonChief Executive OfficerSell109,625$25.31$2.77M0
Sep 20, 2021Rosenthal ArnonChief Executive OfficerSell200,000$25.96$5.19M0
Aug 9, 2021Paul RobertChief Medical OfficerSell22,950$27.18$623.8K0
Jul 6, 2021Paul RobertChief Medical OfficerSell59,749$38.00$2.27M0
Jul 2, 2021King RobertChief Development OfficerSell60,000$31.14$1.87M0
Jul 2, 2021SCHELLER RICHARD HDirectorSell66,241$28.20$1.87M0
Jul 2, 2021Yu CalvinVice President, FinanceSell114,174$32.80$3.74M0
Jul 1, 2021Paul RobertChief Medical OfficerSell56,726$26.94$1.53M0
Jun 15, 2021Paul RobertChief Medical OfficerSell34,600$22.08$764.0K0
Jun 8, 2021Paul RobertChief Medical OfficerSell19,175$19.18$367.7K0
Jun 2, 2021Yu CalvinVice President, FinanceSell1,844$17.77$32.8K0
May 21, 2021Paul RobertChief Medical OfficerSell14,975$18.14$271.7K0
May 18, 2021Paul RobertChief Medical OfficerSell4,200$18.04$75.8K0
Apr 7, 2021Paul RobertChief Medical OfficerSell22,300$19.20$428.1K0
Mar 22, 2021Paul RobertChief Medical OfficerSell43,800$22.74$995.9K0
Mar 9, 2021Paul RobertChief Medical OfficerSell19,175$18.12$347.4K0

ALEC Insiders

Wong-Sarad Grace

officer: Principal Accounting Officer

Sold $44.0K
5 tradesLast: Mar 10, 2026
Berkley Neil Lindsay

officer: CFO & Chief Business Officer

Sold $63.0K
1 tradesLast: Mar 2, 2026
Rosenthal Arnon

director, officer: Chief Executive Officer

Sold $173.8K
1 tradesLast: Mar 2, 2026
Wong-Sarad Grace

Principal Accounting Officer

Sold $29.5K
3 tradesLast: Dec 5, 2025
Berkley Neil Lindsay

Chief Bus Ofcr & Interim CFO

Sold $41.7K
1 tradesLast: Dec 3, 2025
Kenkare-Mitra Sara

President and Head of R&D

Sold $663.2K
12 tradesLast: Dec 3, 2025
Rosenthal Arnon

Chief Executive Officer

Sold $21.94M
38 tradesLast: Dec 3, 2025
Berkley Neil Lindsay

Principal Financial Officer

Sold $39.6K
1 tradesLast: Sep 2, 2025
Hammond Paula

Director

Sold $86.2K
2 tradesLast: Aug 26, 2025
Yaffe Kristine

Director

Sold $26.7K
2 tradesLast: Jun 20, 2025
GRASSO MARC

Chief Financial Officer

Sold $247.8K
10 tradesLast: Jun 2, 2025
Romano Gary

Chief Medical Officer

Sold $312.2K
11 tradesLast: Mar 3, 2025
SCHELLER RICHARD H

Director

Sold $2.10M
4 tradesLast: Aug 22, 2024
MCGUIRE TERRANCE

Director

Sold $3.00M
1 tradesLast: Sep 11, 2023
King Robert

Chief Development Officer

Sold $1.88M
5 tradesLast: Sep 2, 2022
SULIMAN SHEHNAAZ

President and COO

Sold $6.65M
8 tradesLast: Dec 13, 2021
Paul Robert

Chief Medical Officer

Sold $7.67M
26 tradesLast: Aug 9, 2021
Yu Calvin

Vice President, Finance

Sold $3.78M
4 tradesLast: Jul 6, 2021