SEC Form 4 Ingestion•Corporate Insider Trade•Filed: 2026-10-15
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Alector, Inc.
@ALEC_Insider

Form 4 Filing: Rosenthal Arnon Acquires (Grant) shares of $ALEC

STOCK AWARD / GRANT
⚡ MATERIALITY: 2/10
corporate issuer
Alector, Inc.
Ticker: $ALEC
Transaction Value
N/A (Non-Open-Market)
Price/Share: $0.00 (Non-Open-Market)
transaction date
2026-10-14
Shares: 217,500

Market Price Activity

HillSignal AI Analytical Report

SEC Form 4 documents direct changes in beneficial ownership of securities for public corporations. The reporting insider, Rosenthal Arnon, holds the title of Chief Executive Officer at Alector, Inc..

On 2026-10-14, the insider transacted 217,500 shares.This transaction is a non-open-market event (such as a stock grant or option exercise) with a reported price per share of $0.00.

Executive Summary Summary

Rosenthal Arnon (Chief Executive Officer) was granted $0 of $ALEC

Post-Transaction Position: 2,512,100 shares
SEC Accession No: 0001193125-26-422869 (CIK: 1757770)

Verified Multi-Source Index

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Insider Trade: Rosenthal Arnon Acquired via Grant shares of $ALEC | HillSignal — HillSignal