Arnon Rosenthal
Chief Executive Officer at Alector Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Alector Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Alector Inc. June 9, 202598.8%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 3, 2026 | Alector Inc. | Open-market sale | −72,606 | $2.66 | $193,132 |
| Aug 19, 2026 | Alector Inc. | Gift | −1,050,000 | — | — |
| Aug 19, 2026 | Alector Inc. | Gift | +350,000 | — | — |
| Aug 19, 2026 | Alector Inc. | Gift | +350,000 | — | — |
| Aug 19, 2026 | Alector Inc. | Gift | +350,000 | — | — |
| Jun 2, 2026 | Alector Inc. | Open-market sale | −87,216 | $1.97 | $171,816 |
| Mar 13, 2026 | Alector Inc. | Grant or award | +116,246 | — | — |
| Mar 2, 2026 | Alector Inc. | Open-market sale | −81,864 | $2.12 | $173,552 |
| Dec 3, 2025 | Alector Inc. | Open-market sale | −104,347 | $1.12 | $116,869 |
| Nov 10, 2025 | Alector Inc. | Grant or award | +174,167 | — | — |
| Sep 2, 2025 | Alector Inc. | Open-market sale | −51,562 | $2.50 | $128,905 |
| Jul 1, 2025 | Alector Inc. | Grant or award | +137,125 | — | — |
| Jun 2, 2025 | Alector Inc. | Open-market sale | −52,087 | $1.34 | $69,797 |
| Mar 3, 2025 | Alector Inc. | Open-market sale | −40,330 | $1.47 | $59,285 |
| Dec 2, 2024 | Alector Inc. | Open-market sale | −52,172 | $2.52 | $131,473 |
Questions about Arnon Rosenthal
What boards is Arnon Rosenthal on?
Arnon Rosenthal sits on the board of Alector Inc.
What company is Arnon Rosenthal the CEO of?
Arnon Rosenthal is Chief Executive Officer of Alector Inc.
How long has Arnon Rosenthal served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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