CIK 0001653087 · Accelerated filer<br>Smaller reporting company
Alector, Inc.
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- ALEC
- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- FY end
- Dec 31
- Entity type
- operating
- EIN
- 822933343
- Phone
- 415-231-5660
- Business address
- 131 OYSTER POINT BLVD., SUITE 600, SOUTH SAN FRANCISCO, CA, 94080
- Former names
- Alector LLC
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $296,087
- in 3 filings
Net −$296,087. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 76 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-10-14 | Rosenthal Arnon Chief Executive Officer | Grant or award | +217,500 | 2,512,100 | ||
| 2026-10-14 | Rosenthal Arnon Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +978,750 | 978,750 | ||
| 2026-10-14 | Berkley Neil Lindsay CFO & Chief Business Officer | Grant or award | +44,567 | 395,216 | ||
| 2026-10-14 | Berkley Neil Lindsay CFO & Chief Business Officer | Grant or award · Employee Stock Option (right to buy) | +190,000 | 190,000 | ||
| 2026-10-14 | Wong-Sarad Grace Principal Accounting Officer | Grant or award | +55,555 | 161,570 | ||
| 2026-10-14 | Wong-Sarad Grace Principal Accounting Officer | Grant or award · Employee Stock Option (right to buy) | +83,435 | 83,435 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Returned to the company · Employee Stock Option (right to buy) | −500,000 | 0 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +500,000 | 500,000 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Returned to the company · Employee Stock Option (right to buy) | −275,000 | 0 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +275,000 | 275,000 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Returned to the company · Employee Stock Option (right to buy) | −520,000 | 0 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +520,000 | 520,000 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Returned to the company · Employee Stock Option (right to buy) | −457,038 | 0 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +457,038 | 457,038 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Returned to the company · Employee Stock Option (right to buy) | −417,213 | 0 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +417,213 | 417,213 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Returned to the company · Employee Stock Option (right to buy) | −119,446 | 0 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +119,446 | 119,446 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Returned to the company · Employee Stock Option (right to buy) | −132,500 | 0 | ||
| 2026-10-13 | Rosenthal Arnon Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +132,500 | 132,500 |
Page 1 of 23 · 454 trades