Alector, Inc. — All Filings
575 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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10-K
10-K/A
10-Q
144
3
4
4/A
424B4
424B5
8-A12B
8-K
ARS
CERT
CORRESP
CT ORDER
D
DEF 14A
DEFA14A
DEFR14A
DRS
DRS/A
DRSLTR
EFFECT
FWP
POS AM
S-1
S-1/A
S-1MEF
S-3
S-3ASR
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-000550 | Mar 26, 2026 | — |
| 4 | 4 | 0001193125-26-106250 | Mar 13, 2026 | — |
| 4 | 4 | 0001193125-26-106246 | Mar 13, 2026 | — |
| 4 | 4 | 0001193125-26-104633 | Mar 12, 2026 | Mar 10, 2026 |
| S-3 | S-3 | 0001193125-26-104120 | Mar 12, 2026 | — |
| 144 | — | 0001950047-26-002453 | Mar 10, 2026 | — |
| 4 | 4 | 0002074667-26-000004 | Mar 3, 2026 | — |
| 144 | — | 0001950047-26-002123 | Mar 3, 2026 | — |
| 4 | 4 | 0002074667-26-000002 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | 4 | 0001757770-26-000002 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | 4 | 0002075298-26-000002 | Mar 3, 2026 | Mar 2, 2026 |
| 144 | — | 0001193125-26-083402 | Feb 27, 2026 | — |
| 144 | — | 0001193125-26-083401 | Feb 27, 2026 | — |
| 144 | — | 0001193125-26-083400 | Feb 27, 2026 | — |
| 4 | 4 | 0001193125-26-077735 | Feb 26, 2026 | — |
| 144 | — | 0001950047-26-001847 | Feb 26, 2026 | — |
| S-8 | S-8 | 0001193125-26-071679 | Feb 25, 2026 | — |
| 10-K | 10-K | 0001193125-26-071593 | Feb 25, 2026 | Dec 31, 2025 |
| 8-K | 8-K | 0001193125-26-071557 | Feb 25, 2026 | — |
| SCHEDULE 13G/A | — | 0001493215-26-000024 | Feb 17, 2026 | — |
| SCHEDULE 13G/A | — | 0001193125-26-041267 | Feb 6, 2026 | — |
| SCHEDULE 13G/A | — | 0000102909-26-000060 | Jan 30, 2026 | — |
| SCHEDULE 13G/A | — | 0002012383-26-000735 | Jan 21, 2026 | — |
| 8-K | 8-K | 0001193125-25-317554 | Dec 12, 2025 | Dec 10, 2025 |
| 4 | — | 0002074667-25-000008 | Dec 8, 2025 | Dec 5, 2025 |
| 144 | — | 0001950047-25-009833 | Dec 5, 2025 | — |
| 4 | — | 0002074667-25-000006 | Dec 3, 2025 | — |
| 4 | — | 0001757770-25-000007 | Dec 3, 2025 | — |
| 4 | — | 0001895592-25-000005 | Dec 3, 2025 | — |
| 4 | — | 0002075298-25-000006 | Dec 3, 2025 | — |
| 144 | — | 0001193125-25-304243 | Dec 1, 2025 | — |
| 144 | — | 0001193125-25-304242 | Dec 1, 2025 | — |
| 144 | — | 0001193125-25-304241 | Dec 1, 2025 | — |
| 144 | — | 0001193125-25-304239 | Dec 1, 2025 | — |
| SCHEDULE 13G | — | 0001193125-25-283021 | Nov 14, 2025 | — |
| SCHEDULE 13G | — | 0001493215-25-000035 | Nov 14, 2025 | — |
| SCHEDULE 13G/A | — | 0001193125-25-280330 | Nov 13, 2025 | — |
| 4 | — | 0002074667-25-000005 | Nov 12, 2025 | Nov 10, 2025 |
| 4 | — | 0002075298-25-000005 | Nov 12, 2025 | Nov 10, 2025 |
| 4 | — | 0001757770-25-000006 | Nov 12, 2025 | Nov 10, 2025 |
| SCHEDULE 13G/A | — | 0000315066-25-002908 | Nov 7, 2025 | — |
| 10-Q | 10-Q | 0001193125-25-269592 | Nov 6, 2025 | Sep 30, 2025 |
| 8-K | 8-K | 0001193125-25-269537 | Nov 6, 2025 | — |
| 8-K | 8-K | 0001193125-25-245102 | Oct 21, 2025 | Oct 20, 2025 |
| SCHEDULE 13G/A | — | 0002012383-25-002827 | Oct 17, 2025 | — |
| 4 | — | 0001415889-25-023686 | Sep 4, 2025 | Sep 2, 2025 |
| 4 | — | 0001415889-25-023683 | Sep 4, 2025 | Sep 2, 2025 |
| 4 | — | 0001415889-25-023674 | Sep 4, 2025 | Sep 2, 2025 |
| 4 | — | 0001415889-25-023670 | Sep 4, 2025 | Sep 2, 2025 |
| 144 | — | 0002075298-25-000003 | Aug 29, 2025 | — |