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Changes in Ownership

Alector, Inc. Filed Acc 0001193125-26-422869

Chief Executive Officer acquired 217,500 shares (grant or award)

From the SEC's structured data for this filing

Trades in this filing

Insider Date Transaction Shares Price Value Owned after D/I
Rosenthal Arnon Chief Executive Officer 2026-10-14 Grant or award +217,500 2,512,100 D
Derivatives
Rosenthal Arnon Chief Executive Officer 2026-10-13 Returned to the company · Employee Stock Option (right to buy) −500,000 0 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Grant or award · Employee Stock Option (right to buy) +500,000 500,000 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Returned to the company · Employee Stock Option (right to buy) −275,000 0 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Grant or award · Employee Stock Option (right to buy) +275,000 275,000 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Returned to the company · Employee Stock Option (right to buy) −520,000 0 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Grant or award · Employee Stock Option (right to buy) +520,000 520,000 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Returned to the company · Employee Stock Option (right to buy) −457,038 0 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Grant or award · Employee Stock Option (right to buy) +457,038 457,038 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Returned to the company · Employee Stock Option (right to buy) −417,213 0 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Grant or award · Employee Stock Option (right to buy) +417,213 417,213 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Returned to the company · Employee Stock Option (right to buy) −119,446 0 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Grant or award · Employee Stock Option (right to buy) +119,446 119,446 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Returned to the company · Employee Stock Option (right to buy) −132,500 0 D
Rosenthal Arnon Chief Executive Officer 2026-10-13 Grant or award · Employee Stock Option (right to buy) +132,500 132,500 D
Rosenthal Arnon Chief Executive Officer 2026-10-14 Grant or award · Employee Stock Option (right to buy) +978,750 978,750 D
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