Common Stock, Shares, Outstanding of Alector, Inc. from 31 Dec 2018 to 31 Dec 2025

Taxonomy & unit
us-gaap: shares
Description
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.
Summary
Alector, Inc. quarterly Common Stock, Shares, Outstanding in shares history and change rate from 31 Dec 2018 to 31 Dec 2025.
  • Alector, Inc. Common Stock, Shares, Outstanding for the quarter ending 31 Dec 2025 was 110,362,581, a 11% increase year-over-year.
Source SEC data
View on sec.gov
Common Stock, Shares, Outstanding, Quarterly (shares)
Common Stock, Shares, Outstanding, YoY Quarterly Change (%)

Alector, Inc. Quarterly Common Stock, Shares, Outstanding (shares)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q4 2025 110,362,581 +11,276,693 +11% 31 Dec 2025 10-K 25 Feb 2026 2025 FY
Q3 2025 107,446,056 +9,516,159 +9.7% 30 Sep 2025 10-Q 06 Nov 2025 2025 Q3
Q2 2025 101,212,329 +3,891,267 +4% 30 Jun 2025 10-Q 07 Aug 2025 2025 Q2
Q1 2025 99,992,600 +3,608,038 +3.7% 31 Mar 2025 10-Q 08 May 2025 2025 Q1
Q4 2024 99,085,888 +14,206,195 +17% 31 Dec 2024 10-K 25 Feb 2026 2025 FY
Q3 2024 97,929,897 +13,793,516 +16% 30 Sep 2024 10-Q 06 Nov 2024 2024 Q3
Q2 2024 97,321,062 +13,490,762 +16% 30 Jun 2024 10-Q 07 Aug 2024 2024 Q2
Q1 2024 96,384,562 +13,032,784 +16% 31 Mar 2024 10-Q 08 May 2024 2024 Q1
Q4 2023 84,879,693 +1,983,975 +2.4% 31 Dec 2023 10-K 26 Feb 2025 2024 FY
Q3 2023 84,136,381 +2,150,189 +2.6% 30 Sep 2023 10-Q 07 Nov 2023 2023 Q3
Q2 2023 83,830,300 +1,844,108 +2.2% 30 Jun 2023 10-Q 03 Aug 2023 2023 Q2
Q1 2023 83,351,778 +1,365,586 +1.7% 31 Mar 2023 10-Q 04 May 2023 2023 Q1
Q4 2022 82,895,718 +909,526 +1.1% 31 Dec 2022 10-K 27 Feb 2024 2023 FY
Q3 2022 81,986,192 +2,669,931 +3.4% 30 Sep 2022 10-Q 08 Nov 2022 2022 Q3
Q2 2022 81,986,192 +1,981,030 +2.5% 30 Jun 2022 10-Q 04 Aug 2022 2022 Q2
Q1 2022 81,986,192 +2,254,545 +2.8% 31 Mar 2022 10-Q 05 May 2022 2022 Q1
Q4 2021 81,986,192 +2,669,931 +3.4% 31 Dec 2021 10-K 28 Feb 2023 2022 FY
Q3 2021 79,316,261 30 Sep 2021 10-Q 04 Nov 2021 2021 Q3
Q2 2021 80,005,162 +752,767 +0.95% 30 Jun 2021 10-Q 03 Aug 2021 2021 Q2
Q1 2021 79,731,647 +715,178 +0.9% 31 Mar 2021 10-Q 05 May 2021 2021 Q1
Q4 2020 79,316,261 +10,263,388 +15% 31 Dec 2020 10-K 24 Feb 2022 2021 FY
Q2 2020 79,252,395 +10,420,538 +15% 30 Jun 2020 10-Q 11 Aug 2020 2020 Q2
Q1 2020 79,016,469 +10,144,677 +15% 31 Mar 2020 10-Q 13 May 2020 2020 Q1
Q4 2019 69,052,873 +55,288,044 +402% 31 Dec 2019 10-K 25 Feb 2021 2020 FY
Q3 2019 68,922,249 30 Sep 2019 10-Q 12 Nov 2019 2019 Q3
Q2 2019 68,831,857 30 Jun 2019 10-Q 12 Aug 2019 2019 Q2
Q1 2019 68,871,792 31 Mar 2019 10-Q 13 May 2019 2019 Q1
Q4 2018 13,764,829 31 Dec 2018 10-K 24 Mar 2020 2019 FY
* An asterisk sign (*) next to the value indicates that the value is likely invalid.