# Filing Detail

Form ARS - Annual Report to Security Holders:
SEC Accession No. 0001193125-26-186942
Filing Date
2026-04-28
Accepted
2026-04-28 16:06:03
Documents
1
Period of Report
2025-12-31
Effectiveness Date
2026-04-28

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | ARS | 2026_ars.pdf | ARS | 2200681
| Complete submission text file | 0001193125-26-186942.txt |  | 3031904

Mailing Address 131 OYSTER POINT BLVD., SUITE 600 SOUTH SAN FRANCISCO CA 94080
Business Address 131 OYSTER POINT BLVD., SUITE 600 SOUTH SAN FRANCISCO CA 94080 415-231-5660
Alector, Inc. (Filer) CIK: 0001653087 (see all company filings)

EIN.: 822933343 | Fiscal Year End: 1231
Type: ARS | Act: 34 | File No.: 001-38792 | Film No.: 26907615
SIC: 2836 Biological Products, (No Diagnostic Substances)
(CF Office: 03 Life Sciences)