• Alector set an option repricing effective Oct. 13, 2026, cutting exercise prices on eligible employee stock options to USD 1.87.
• Early exercises during a retention period trigger a premium exercise price equal to each option’s original exercise price.
• Retention period ends at the earliest of one year from the effective date, a change in control, death, or disability.
• CEO Arnon Rosenthal’s eligible options cover 2,421,197 shares; Chief Accounting Officer Grace Wong-Sarad’s cover 87,385 shares.
• About 4,050,000 shares underlying employee options were repriced; prior exercise prices ranged from USD 6.48 to USD 33.11.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Alector Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001193125-26-421080), on October 14, 2026, and is solely responsible for the information contained therein.