Alector Inc

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Alector Inc
TickerALEC
CIK #0001653087
CUSIP014442107
SectorLife Sciences - Biological Products, (No Disgnostic Substances)
Address151 Oyster Point Blvd, Suite 300, South San Francisco, CA 94080
Source [EDGAR]
CIK Filing 2011 - 2025
[0001653087] 10-K
[0001653087] 10-Q
[0001653087] 3
[0001653087] 4
[0001653087] 8-K
[0001653087] D
[0001653087] SC 13D
[0001653087] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
RA Capital Management LP Alector Inc [2024-12-06] 0.9
Morgan Stanley Alector Inc [2024-02-12] 5.5
Rosenthal Arnon Alector Inc [2024-02-08] 0.0
Rosenthal Arnon Alector Inc [2022-02-14] 8.0
FMR LLC Alector Inc [2022-02-09] 0.0
EcoR1 Capital LLC Alector Inc [2021-07-12] 6.0
Vanguard Group Inc Alector Inc [2021-02-10] 6.31
BlackRock Inc Alector Inc [2021-02-02] 6.5
Federated Hermes Inc Alector Inc [2020-02-13] 5.54
Polaris Venture Partners VI LP Alector Inc [2020-02-12] 0.7
OrbiMed Advisors LLC Alector Inc [2019-02-20] 18.86
Merck & Co Inc Alector Inc [2019-02-14] 5.1
Flynn James E Alector Inc [2019-02-11] 1.32
Form 3/4/5 Filer 2011 - 2025
Kenkare-Mitra Sara
Alector, Inc.
Rosenthal Arnon
Berkley Neil Lindsay
Wong-Sarad Grace
Yaffe Kristine
Altmeyer Mark
Scheller Richard H
Desouza Errol B
Hammond Paula
Garofalo Elizabeth A
Lavigne Louis J Jr
Grasso Marc
Romano Gary
Wehner David M.
Polaris Venture Partners Founders' Fund VI, L.P.
Polaris Venture Partners VI (AIV-B), L.P.
Polaris Venture Management Co. VI, L.L.C.
Polaris Venture Partners VI (AIV), L.P.
Polaris Venture Partners VI, L.P.
McGuire Terrance
Gerngross Tillman U.
King Robert
Suliman Shehnaaz
Rubinstein Linda M
Paul Robert
Yu Calvin
Oney Sabah
OrbiMed Advisors LLC
OrbiMed Capital GP IV LLC
OrbiMed Capital LLC
Gordon Carl L
Form 13F Holdings
Firm Period DFND Voting Shares
FMR LLC [2025-06-30] DFND 14,994,466 14,998,889
BlackRock, Inc. [2025-06-30] SOLE 7,681,396 7,973,580
Vanguard Group Inc [2025-06-30] SOLE 0 5,919,645
Price T Rowe Associates Inc /MD/ [2025-06-30] SOLE 4,831,120 4,831,120
Merck & Co., Inc. [2025-06-30] DFND 0 3,545,719
Eversept Partners LP [2025-06-30] SOLE 1,986,072 1,986,072
Geode Capital Management LLC [2025-06-30] DFND 1,982,068 1,982,068
Adar1 Capital Management LLC [2025-06-30] SOLE 1,723,526 1,723,526
State Street Corp [2025-06-30] DFND 1,614,456 1,709,902
Jacobs Levy Equity Management Inc [2025-06-30] SOLE 1,269,486 1,322,882
Euclidean Capital LLC [2025-06-30] SOLE 1,307,858 1,307,858
Renaissance Technologies LLC [2025-06-30] SOLE 1,254,850 1,254,850
Deerfield Management Company LP [2025-06-30] DFND 1,055,192 1,055,192
5AM Venture Management LLC [2025-06-30] SOLE 995,841 995,841
Deutsche Bank AG [2025-06-30] DFND 1,547 989,747
Vestal Point Capital LP [2025-06-30] SOLE 976,992 976,992
DAFNA Capital Management LLC [2025-06-30] SOLE 912,928 912,928
Ikarian Capital LLC [2025-06-30] SOLE 900,000 900,000
SIO Capital Management LLC [2025-06-30] SOLE 845,531 845,531
TD Asset Management Inc [2025-06-30] SOLE 651,738 651,738
Charles Schwab Investment Management Inc [2025-06-30] SOLE 647,653 647,653
Northern Trust Corp [2025-06-30] DFND 645,224 645,374
Morgan Stanley [2025-06-30] DFND 593,680 606,552
Citadel Advisors LLC [2025-06-30] DFND 595,020 595,020
D. E. Shaw & Co., Inc. [2025-06-30] DFND 534,200 534,200
PanAgora Asset Management Inc [2025-06-30] SOLE 183,629 516,680
Boothbay Fund Management LLC [2025-06-30] OTR 0 458,863
Millennium Management LLC [2025-06-30] SOLE 410,803 410,803
AQR Capital Management LLC [2025-06-30] DFND 398,102 398,102
Two Sigma Advisers LP [2025-06-30] SOLE 347,300 377,000
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