Company · CIK 1653087 # Alector, Inc. | CIK | [1653087](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001653087) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 2836 — Biological Products, (No Diagnostic Substances) | | Business address | CA | | Listed | ALEC (Nasdaq) | | First annual or quarterly report | 2019-03-26 | ## Offerings 5 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-294241 | Shelf Effective | 2026-03-12 | 2026-10-16 | 4 | | 333-270126 | Shelf Effective | 2023-02-28 | 2024-01-19 | 5 | | 333-238230 | Shelf Effective | 2020-05-13 | 2023-05-05 | 3 | | 333-236094 | Registered company Final prospectus | 2020-01-27 | 2020-01-30 | 4 | | 333-229152 | IPO Final prospectus | 2019-01-07 | 2019-02-07 | 5 | ## Filings 23 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-10-16 | [424B5](https://www.sec.gov/Archives/edgar/data/1653087/000119312526424215/0001193125-26-424215-index.htm) Shelf takedown | 333-294241 | 0001193125-26-424215 | | 2026-05-07 | [424B5](https://www.sec.gov/Archives/edgar/data/1653087/000119312526212417/0001193125-26-212417-index.htm) Shelf takedown | 333-294241 | 0001193125-26-212417 | | 2026-04-30 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1653087/999999999526001406/9999999995-26-001406-index.htm) Declared effective | 333-294241 | 9999999995-26-001406 | | 2026-03-12 | [S-3](https://www.sec.gov/Archives/edgar/data/1653087/000119312526104120/0001193125-26-104120-index.htm) Shelf registered | 333-294241 | 0001193125-26-104120 | | 2024-01-19 | [424B5](https://www.sec.gov/Archives/edgar/data/1653087/000119312524010640/0001193125-24-010640-index.htm) Shelf takedown | 333-270126 | 0001193125-24-010640 | | 2024-01-16 | [424B5](https://www.sec.gov/Archives/edgar/data/1653087/000119312524008547/0001193125-24-008547-index.htm) Shelf takedown | 333-270126 | 0001193125-24-008547 | | 2023-11-07 | [424B5](https://www.sec.gov/Archives/edgar/data/1653087/000119312523272541/0001193125-23-272541-index.htm) Shelf takedown | 333-270126 | 0001193125-23-272541 | | 2023-05-05 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1653087/999999999523001304/9999999995-23-001304-index.htm) Declared effective | 333-238230 | 9999999995-23-001304 | | 2023-05-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1653087/999999999523001186/9999999995-23-001186-index.htm) Declared effective | 333-270126 | 9999999995-23-001186 | | 2023-02-28 | [S-3](https://www.sec.gov/Archives/edgar/data/1653087/000119312523054075/0001193125-23-054075-index.htm) Shelf registered | 333-270126 | 0001193125-23-054075 | | 2020-05-13 | [424B5](https://www.sec.gov/Archives/edgar/data/1653087/000119312520141685/0001193125-20-141685-index.htm) Shelf takedown | 333-238230 | 0001193125-20-141685 | | 2020-05-13 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1653087/000119312520141645/0001193125-20-141645-index.htm) Shelf registered | 333-238230 | 0001193125-20-141645 | | 2020-01-30 | [424B4](https://www.sec.gov/Archives/edgar/data/1653087/000119312520019151/0001193125-20-019151-index.htm) Final prospectus | 333-236094 | 0001193125-20-019151 | | 2020-01-29 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1653087/999999999520000190/9999999995-20-000190-index.htm) Declared effective | 333-236094 | 9999999995-20-000190 | | 2020-01-29 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1653087/000119312520017882/0001193125-20-017882-index.htm) Amendment | 333-236094 | 0001193125-20-017882 | | 2020-01-27 | [S-1](https://www.sec.gov/Archives/edgar/data/1653087/000119312520015336/0001193125-20-015336-index.htm) Registration filed | 333-236094 | 0001193125-20-015336 | | 2019-12-02 | [DRS](https://www.sec.gov/Archives/edgar/data/1653087/000095012319011700/0000950123-19-011700-index.htm) Draft made public | 377-02936 | 0000950123-19-011700 | | 2019-02-07 | [424B4](https://www.sec.gov/Archives/edgar/data/1653087/000119312519030566/0001193125-19-030566-index.htm) Final prospectus | 333-229152 | 0001193125-19-030566 | | 2019-02-06 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1653087/999999999519000107/9999999995-19-000107-index.htm) Declared effective | 333-229152 | 9999999995-19-000107 | | 2019-02-06 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1653087/000119312519029514/0001193125-19-029514-index.htm) Amendment | 333-229152 | 0001193125-19-029514 | | 2019-01-29 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1653087/000119312519019648/0001193125-19-019648-index.htm) Amendment | 333-229152 | 0001193125-19-019648 | | 2019-01-07 | [S-1](https://www.sec.gov/Archives/edgar/data/1653087/000119312519003772/0001193125-19-003772-index.htm) Registration filed | 333-229152 | 0001193125-19-003772 | | 2018-10-12 | [DRS](https://www.sec.gov/Archives/edgar/data/1653087/000095012318009894/0000950123-18-009894-index.htm) Draft made public | 377-02318 | 0000950123-18-009894 | [All filings of this company](https://equitycapital.markets/filings?cik=1653087) · [CSV](https://equitycapital.markets/filings.csv?cik=1653087) --- Source page: https://equitycapital.markets/company/1653087 · Data: U.S. SEC EDGAR · CC BY 4.0