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Alector, Inc.

ALEC
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0001653087

In the last 90 days, Alector, Inc. insiders filed 0 open-market purchases and 3 sales; 140 institutions reported holding it in 13F filings for Q2 2026, worth $183.4M in total; no superinvestor holds it.

SEC filings

10-K, 10-Q, 8-K, 20-F and 40-F reports Alector, Inc. filed with the SEC, newest first.

Livermore lists each filing's form, 8-K items and dates only. To read a filing, open it on SEC.gov; an 8-K's press release or other attachments, such as exhibit 99.1 for Item 2.02, are in the filing index.

SEC filings by Alector, Inc.
FiledForm8-K itemsPeriodDocumentFiling index
Nov 5, 202610-Q–Sep 30, 2026SECIndex
Nov 5, 20268-K2.029.01Nov 5, 2026SECIndex
Oct 16, 20268-K1.018.019.01Oct 15, 2026SECIndex
Oct 14, 20268-K5.02Oct 13, 2026SECIndex
Oct 5, 20268-K1.012.027.018.019.01Sep 30, 2026SECIndex
Aug 6, 202610-Q–Jun 30, 2026SECIndex
Aug 6, 20268-K2.029.01Aug 6, 2026SECIndex
Jul 8, 20268-K1.02Jul 6, 2026SECIndex
Jun 17, 20268-K5.07Jun 17, 2026SECIndex
May 7, 20268-K1.019.01May 7, 2026SECIndex
May 7, 202610-Q–Mar 31, 2026SECIndex
May 7, 20268-K2.029.01May 7, 2026SECIndex
Feb 25, 202610-K–Dec 31, 2025SECIndex
Feb 25, 20268-K2.029.01Feb 25, 2026SECIndex
Dec 12, 20258-K5.029.01Dec 10, 2025SECIndex
Nov 6, 202510-Q–Sep 30, 2025SECIndex
Nov 6, 20258-K2.029.01Nov 6, 2025SECIndex
Oct 21, 20258-K2.022.055.027.019.01Oct 20, 2025SECIndex
Aug 7, 202510-Q–Jun 30, 2025SECIndex
Aug 7, 20258-K2.029.01Aug 7, 2025SECIndex
Jun 13, 20258-K5.025.079.01Jun 9, 2025SECIndex
May 8, 202510-Q–Mar 31, 2025SECIndex
May 8, 20258-K2.029.01May 8, 2025SECIndex
Mar 28, 20258-K5.02Mar 25, 2025SECIndex
Mar 10, 20258-K2.05Mar 7, 2025SECIndex
Feb 26, 202510-K–Dec 31, 2024SECIndex
Feb 26, 20258-K2.029.01Feb 26, 2025SECIndex
Jan 10, 20258-K8.01Jan 9, 2025SECIndex
Nov 25, 20248-K2.057.019.01Nov 25, 2024SECIndex
Nov 14, 20248-K1.012.037.019.01Nov 14, 2024SECIndex
Nov 6, 202410-Q–Sep 30, 2024SECIndex
Nov 6, 20248-K2.029.01Nov 6, 2024SECIndex
Aug 7, 202410-Q–Jun 30, 2024SECIndex
Aug 7, 20248-K2.029.01Aug 7, 2024SECIndex
Jun 12, 20248-K5.07Jun 12, 2024SECIndex
May 8, 202410-Q–Mar 31, 2024SECIndex
May 8, 20248-K2.029.01May 8, 2024SECIndex
Mar 21, 20248-K5.02Mar 15, 2024SECIndex
Feb 27, 202410-K–Dec 31, 2023SECIndex
Feb 27, 20248-K2.029.01Feb 27, 2024SECIndex
Jan 19, 20248-K1.018.019.01Jan 17, 2024SECIndex
Jan 16, 20248-K2.02Jan 16, 2024SECIndex
Nov 7, 20238-K1.019.01Nov 7, 2023SECIndex
Nov 7, 202310-Q–Sep 30, 2023SECIndex
Nov 7, 20238-K2.029.01Nov 7, 2023SECIndex
Aug 3, 202310-Q–Jun 30, 2023SECIndex
Aug 3, 20238-K2.029.01Aug 3, 2023SECIndex
Jun 15, 20238-K5.035.079.01Jun 10, 2023SECIndex
May 4, 202310-Q–Mar 31, 2023SECIndex
May 4, 20238-K2.029.01May 4, 2023SECIndex