Follow the people · Insider
Arnon Rosenthal
Arnon Rosenthal files insider transactions with the SEC as a chief executive officer of Alector (ALEC). We hold 3 disclosed purchases and sales filed since 8 November 2019, 1 of them in the last 90 days.
- Files forALEC
- Disclosed buys and sells3 in all, 1 in the last 90 days
- Last disclosure4 September 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 6 November 2019 — 3 September 2026Chief Executive Officer · Alector (ALEC)62 Form 4 lines · source: SEC Form 4
Everything they disclosed
62 entries, newest first — one per disclosure report, one per Form 4 line- ▼ sold on the open market 72,606 shares of AlectorSEC Form 44 September 2026Common Stock · traded 3 September 2026 · filed 4 September 2026
- gave away 1,050,000 shares of AlectorSEC Form 421 August 2026Common Stock · traded 19 August 2026 · filed 21 August 2026
- gave away 350,000 shares of AlectorSEC Form 421 August 2026Common Stock · traded 19 August 2026 · filed 21 August 2026
- gave away 350,000 shares of AlectorSEC Form 421 August 2026Common Stock · traded 19 August 2026 · filed 21 August 2026
- gave away 350,000 shares of AlectorSEC Form 421 August 2026Common Stock · traded 19 August 2026 · filed 21 August 2026
- ▼ sold on the open market 87,216 shares of AlectorSEC Form 43 June 2026Common Stock · traded 2 June 2026 · filed 3 June 2026
- was granted 116,246 shares of AlectorSEC Form 413 March 2026Common Stock · traded 13 March 2026 · filed 13 March 2026
- was granted 116,246 shares of AlectorSEC Form 413 March 2026Common Stock · traded 13 March 2026 · filed 13 March 2026
- ▼ sold on the open market 81,864 shares of AlectorSEC Form 43 March 2026Common Stock · traded 2 March 2026 · filed 3 March 2026
- ▼ sold on the open market 81,864 shares of AlectorSEC Form 43 March 2026Common Stock · traded 2 March 2026 · filed 3 March 2026
- ▼ sold on the open market 104,347 shares of AlectorSEC Form 43 December 2025Common Stock · traded 3 December 2025 · filed 3 December 2025
- was granted 522,500 shares of Alector (a derivative holding)SEC Form 412 November 2025Employee Stock Option (right to buy) · traded 10 November 2025 · filed 12 November 2025
- was granted 174,167 shares of AlectorSEC Form 412 November 2025Common Stock · traded 10 November 2025 · filed 12 November 2025
- ▼ sold on the open market 51,562 shares of AlectorSEC Form 44 September 2025Common Stock · traded 2 September 2025 · filed 4 September 2025
- was granted 45,700 shares of Alector (a derivative holding)SEC Form 41 July 2025Employee Stock Option (right to buy) · traded 1 July 2025 · filed 1 July 2025
- was granted 137,125 shares of AlectorSEC Form 41 July 2025Common Stock · traded 1 July 2025 · filed 1 July 2025
- ▼ sold on the open market 52,087 shares of AlectorSEC Form 44 June 2025Common Stock · traded 2 June 2025 · filed 4 June 2025
- ▼ sold on the open market 40,330 shares of AlectorSEC Form 45 March 2025Common Stock · traded 3 March 2025 · filed 5 March 2025
- ▼ sold on the open market 52,172 shares of AlectorSEC Form 43 December 2024Common Stock · traded 2 December 2024 · filed 3 December 2024
- was granted 610,500 shares of AlectorSEC Form 42 October 2024Common Stock · traded 1 October 2024 · filed 2 October 2024
- ▼ sold on the open market 26,499 shares of AlectorSEC Form 44 September 2024Common Stock · traded 3 September 2024 · filed 4 September 2024
- ▼ sold on the open market 25,135 shares of AlectorSEC Form 44 June 2024Common Stock · traded 3 June 2024 · filed 4 June 2024
- ▼ sold on the open market 18,837 shares of AlectorSEC Form 45 March 2024Common Stock · traded 4 March 2024 · filed 5 March 2024
- ▼ sold on the open market 23,831 shares of AlectorSEC Form 46 December 2023Common Stock · traded 4 December 2023 · filed 6 December 2023
- was granted 132,500 shares of Alector (a derivative holding)SEC Form 43 October 2023Employee Stock Option (right to buy) · traded 1 October 2023 · filed 3 October 2023
- was granted 397,600 shares of AlectorSEC Form 43 October 2023Common Stock · traded 1 October 2023 · filed 3 October 2023
- ▼ sold on the open market 5,647 shares of AlectorSEC Form 46 September 2023Common Stock · traded 5 September 2023 · filed 6 September 2023
- ▼ sold on the open market 5,255 shares of AlectorSEC Form 45 June 2023Common Stock · traded 2 June 2023 · filed 5 June 2023
- was granted 42,990 shares of AlectorSEC Form 421 March 2023Common Stock · traded 3 March 2023 · filed 21 March 2023
- ▼ sold on the open market 15,186 shares of AlectorSEC Form 421 March 2023Common Stock · traded 17 March 2023 · filed 21 March 2023
- ▼ sold on the open market 5,849 shares of AlectorSEC Form 43 March 2023Common Stock · traded 2 March 2023 · filed 3 March 2023
- was granted 119,446 shares of Alector (a derivative holding)SEC Form 44 October 2022Employee Stock Option (right to buy) · traded 1 October 2022 · filed 4 October 2022
- was granted 179,169 shares of AlectorSEC Form 44 October 2022Common Stock · traded 1 October 2022 · filed 4 October 2022
- ▼ sold on the open market 55,000 shares of AlectorSEC Form 412 November 2021Common Stock · traded 10 November 2021 · filed 12 November 2021
- ▼ sold on the open market 55,000 shares of AlectorSEC Form 412 November 2021Common Stock · traded 11 November 2021 · filed 12 November 2021
- ▼ sold on the open market 55,000 shares of AlectorSEC Form 410 November 2021Common Stock · traded 8 November 2021 · filed 10 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 410 November 2021Common Stock · traded 8 November 2021 · filed 10 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 410 November 2021Common Stock · traded 8 November 2021 · filed 10 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 410 November 2021Common Stock · traded 8 November 2021 · filed 10 November 2021
- ▼ sold on the open market 55,000 shares of AlectorSEC Form 410 November 2021Common Stock · traded 9 November 2021 · filed 10 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 410 November 2021Common Stock · traded 9 November 2021 · filed 10 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 410 November 2021Common Stock · traded 9 November 2021 · filed 10 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 410 November 2021Common Stock · traded 9 November 2021 · filed 10 November 2021
- ▼ sold on the open market 55,000 shares of AlectorSEC Form 48 November 2021Common Stock · traded 4 November 2021 · filed 8 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 48 November 2021Common Stock · traded 4 November 2021 · filed 8 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 48 November 2021Common Stock · traded 4 November 2021 · filed 8 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 48 November 2021Common Stock · traded 4 November 2021 · filed 8 November 2021
- ▼ sold on the open market 55,000 shares of AlectorSEC Form 48 November 2021Common Stock · traded 5 November 2021 · filed 8 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 48 November 2021Common Stock · traded 5 November 2021 · filed 8 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 48 November 2021Common Stock · traded 5 November 2021 · filed 8 November 2021
- ▼ sold on the open market 15,000 shares of AlectorSEC Form 48 November 2021Common Stock · traded 5 November 2021 · filed 8 November 2021
- was granted 417,213 shares of Alector (a derivative holding)SEC Form 44 October 2021Employee Stock Option (right to buy) · traded 1 October 2021 · filed 4 October 2021
- ▼ sold on the open market 94,717 shares of AlectorSEC Form 423 September 2021Common Stock · traded 22 September 2021 · filed 23 September 2021
- ▼ sold on the open market 5,283 shares of AlectorSEC Form 423 September 2021Common Stock · traded 22 September 2021 · filed 23 September 2021
- ▼ sold on the open market 9,625 shares of AlectorSEC Form 423 September 2021Common Stock · traded 23 September 2021 · filed 23 September 2021
- ▼ sold on the open market 91,954 shares of AlectorSEC Form 422 September 2021Common Stock · traded 20 September 2021 · filed 22 September 2021
- ▼ sold on the open market 8,046 shares of AlectorSEC Form 422 September 2021Common Stock · traded 20 September 2021 · filed 22 September 2021
- ▼ sold on the open market 91,538 shares of AlectorSEC Form 422 September 2021Common Stock · traded 21 September 2021 · filed 22 September 2021
- ▼ sold on the open market 8,462 shares of AlectorSEC Form 422 September 2021Common Stock · traded 21 September 2021 · filed 22 September 2021
- was granted 150,000 shares of AlectorSEC Form 411 May 2021Common Stock · traded 7 May 2021 · filed 11 May 2021
- was granted 457,038 shares of Alector (a derivative holding)SEC Form 45 October 2020Stock Option (right to buy) · traded 1 October 2020 · filed 5 October 2020
- was granted 520,000 shares of Alector (a derivative holding)SEC Form 48 November 2019Stock Option (right to buy) · traded 6 November 2019 · filed 8 November 2019
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.