Alector, Inc. - Common Stock, par value $0.0001 per share (ALEC)

Historical Holders from Q1 2019 to Q3 2025

Symbol
ALEC on Nasdaq
Type / Class
Equity / Common Stock, par value $0.0001 per share
Shares outstanding
108,695,652
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares, excl. options
74,738,323
Holdings value
$221,226,506
% of all portfolios
0%
Number of holders
145
Number of buys
69
Number of sells
-50
Average buys %
+0%
Average sells %
-0%
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Alector, Inc. - Common Stock, par value $0.0001 per share (ALEC)

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
TCG Crossover GP II, LLC 9.2% $29,600,000 10,000,000 Chen Yu 22 Oct 2025
Polaris Venture Partners VI, L.P. 6.5% $21,001,943 7,095,251 Terrance G. McGuire 30 Sep 2025
RTW INVESTMENTS, LP 6.9% $20,692,786 6,990,806 RTW Investments, LP 30 Sep 2025
BlackRock, Inc. 5.1% -18.3% $15,395,232 -$2,709,797 5,201,092 -15% BlackRock, Inc. 30 Sep 2025
FMR LLC 3.6% $10,655,467 3,599,820 FMR LLC 31 Oct 2025

Institutional Holders of Alector, Inc. - Common Stock, par value $0.0001 per share (ALEC)

Period Reported Shares, Excl. Options Value, Excl. Options Change Price Investors
2025 Q3 74,738,323 $221,226,506 +$17,843,388 $2.96 145
2025 Q2 70,504,594 $98,716,242 -$652,654 $1.4 134
2025 Q1 72,505,139 $89,184,714 -$1,704,074 $1.23 139
2024 Q4 73,448,279 $138,779,155 -$36,885,425 $1.89 146
2024 Q3 72,547,576 $338,388,917 -$1,031,068 $4.66 159
2024 Q2 72,689,873 $329,967,330 -$13,021,701 $4.54 159
2024 Q1 74,200,085 $446,678,538 +$69,404,550 $6.02 157
2023 Q4 44,946 $359,049 $7.99 2
2023 Q3 62,099,887 $402,430,653 +$24,042,051 $6.48 142
2023 Q2 58,427,073 $351,144,539 +$1,054,233 $6.01 138
2023 Q1 58,249,956 $360,505,698 +$18,659,625 $6.19 141
2022 Q4 54,680,510 $504,700,485 -$3,965,754 $9.23 149
2022 Q3 53,840,551 $509,285,584 +$8,133,322 $9.46 154
2022 Q2 53,125,052 $539,534,937 -$17,739,533 $10.16 142
2022 Q1 55,258,088 $787,760,103 -$4,811,765 $14.25 153
2021 Q4 54,642,068 $1,128,364,384 +$65,341,547 $20.65 157
2021 Q3 52,185,652 $1,190,882,267 +$72,672,013 $22.82 141
2021 Q2 49,143,629 $1,023,834,597 +$62,553,246 $20.83 131
2021 Q1 46,309,052 $931,724,435 +$14,364,743 $20.14 124
2020 Q4 46,195,874 $698,883,278 -$60,583,995 $15.13 128
2020 Q3 49,519,452 $522,137,542 -$49,963,723 $10.54 136
2020 Q2 50,099,049 $1,223,842,967 +$53,674,715 $24.44 133
2020 Q1 47,568,395 $1,147,765,612 +$258,931,250 $24.13 100
2019 Q4 37,021,941 $637,889,713 +$43,932,508 $17.23 80
2019 Q3 34,662,450 $499,844,276 +$80,595,656 $14.42 73
2019 Q2 29,049,115 $550,962,295 +$8,082,749 $19 61
2019 Q1 27,527,687 $515,314,000 +$515,304,167 $18.72 53