Insider Transactions last 24 months for Alector, Inc. - NSDQ: ALEC
Transactions
All
Buy
Sell
Option Exercise
Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Rosenthal Arnon Chief Executive Officer 09/02/2025 DS Direct COM 51,562 $2.50 $128,740.00 2,350,220 Kenkare-Mitra Sara President and Head of R&D 09/02/2025 DS Direct COM 23,638 $2.50 $59,019.36 543,339 Berkley Neil Lindsay Principal Financial Officer 09/02/2025 DS Direct COM 15,842 $2.50 $39,554.31 346,570 Wong-Sarad Grace Principal Accounting Officer 09/02/2025 DS Direct COM 5,910 $2.50 $14,756.09 103,448 Hammond Paula Director 08/26/2025 DS Direct COM 14,000 $2.36 $32,998.00 74,909 Rosenthal Arnon Chief Executive Officer 07/01/2025 AA Direct COM 137,125 $0.00 $0.00 2,551,782 Kenkare-Mitra Sara President and Head of R&D 07/01/2025 AA Direct COM 54,725 $0.00 $0.00 566,977 Yaffe Kristine Director 06/20/2025 DS Direct COM 1,000 $1.44 $1,440.00 95,409 Altmeyer Mark Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 69,950 Desouza Errol B Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 69,950 Lavigne Louis J Jr Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 99,409 Scheller Richard H Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 95,366 Garofalo Elizabeth A. Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 89,950 Yaffe Kristine Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 96,409 Hammond Paula Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 88,909 Rosenthal Arnon Chief Executive Officer 06/02/2025 DS Direct COM 52,087 $1.34 $69,713.24 2,414,657 Kenkare-Mitra Sara President and Head of R&D 06/02/2025 DS Direct COM 23,890 $1.34 $31,974.38 512,252 Grasso Marc Chief Financial Officer 06/02/2025 DS Direct COM 16,488 $1.34 $22,067.54 296,072 Scheller Richard H Director 05/02/2025 AA Direct COM 15,833 $0.00 $0.00 66,666 Romano Gary Chief Medical Officer 03/03/2025 DS Direct COM 16,306 $1.47 $23,927.42 332,977 Rosenthal Arnon Chief Executive Officer 03/03/2025 DS Direct COM 40,330 $1.47 $59,176.21 2,466,744 Kenkare-Mitra Sara President and Head of R&D 03/03/2025 DS Direct COM 29,073 $1.47 $42,661.72 536,142 Grasso Marc Chief Financial Officer 03/03/2025 DS Direct COM 18,091 $1.47 $26,546.73 312,560 Romano Gary Chief Medical Officer 12/02/2024 DS Direct COM 14,892 $2.52 $37,518.90 349,283 Kenkare-Mitra Sara President and Head of R&D 12/02/2024 DS Direct COM 26,500 $2.52 $66,764.10 565,215
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Rosenthal Arnon Chief Executive Officer 07/01/2025 AA Direct COM 137,125 $0.00 $0.00 2,551,782 Kenkare-Mitra Sara President and Head of R&D 07/01/2025 AA Direct COM 54,725 $0.00 $0.00 566,977 Altmeyer Mark Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 69,950 Desouza Errol B Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 69,950 Lavigne Louis J Jr Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 99,409 Scheller Richard H Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 95,366 Garofalo Elizabeth A. Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 89,950 Yaffe Kristine Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 96,409 Hammond Paula Director 06/11/2025 AA Direct COM 28,700 $0.00 $0.00 88,909 Scheller Richard H Director 05/02/2025 AA Direct COM 15,833 $0.00 $0.00 66,666 Romano Gary Chief Medical Officer 10/01/2024 AA Direct COM 184,380 $0.00 $0.00 364,175 Rosenthal Arnon Chief Executive Officer 10/01/2024 AA Direct COM 610,500 $0.00 $0.00 2,559,246 Kenkare-Mitra Sara President and Head of R&D 10/01/2024 AA Direct COM 300,000 $0.00 $0.00 591,715 Grasso Marc Chief Financial Officer 10/01/2024 AA Direct COM 216,400 $0.00 $0.00 347,140 Scheller Richard H Director 08/02/2024 AA Direct COM 15,833 $0.00 $0.00 50,833 Hammond Paula Director 06/12/2024 AA Direct COM 35,000 $0.00 $0.00 70,709 Wehner David M. Director 06/12/2024 AA Direct COM 35,000 $0.00 $0.00 115,330 Scheller Richard H Director 06/12/2024 AA Direct COM 35,000 $0.00 $0.00 79,250 Garofalo Elizabeth A. Director 06/12/2024 AA Direct COM 35,000 $0.00 $0.00 61,250 Yaffe Kristine Director 06/12/2024 AA Direct COM 35,000 $0.00 $0.00 72,709 Lavigne Louis J Jr Director 06/12/2024 AA Direct COM 35,000 $0.00 $0.00 70,709 Polaris Venture Management Co. Vi, L.L.C. Other 05/29/2024 AJ Direct COM 98,533 $0.00 $0.00 98,533 Polaris Venture Management Co. Vi, L.L.C. Other 04/30/2024 AJ Direct COM 98,533 $0.00 $0.00 98,533 Desouza Errol B Director 03/19/2024 AA Direct COM 41,250 $0.00 $0.00 41,250 Altmeyer Mark Director 03/19/2024 AA Direct COM 41,250 $0.00 $0.00 41,250
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Rosenthal Arnon Chief Executive Officer 09/02/2025 DS Direct COM 51,562 $2.50 $128,740.00 2,350,220 Kenkare-Mitra Sara President and Head of R&D 09/02/2025 DS Direct COM 23,638 $2.50 $59,019.36 543,339 Berkley Neil Lindsay Principal Financial Officer 09/02/2025 DS Direct COM 15,842 $2.50 $39,554.31 346,570 Wong-Sarad Grace Principal Accounting Officer 09/02/2025 DS Direct COM 5,910 $2.50 $14,756.09 103,448 Hammond Paula Director 08/26/2025 DS Direct COM 14,000 $2.36 $32,998.00 74,909 Yaffe Kristine Director 06/20/2025 DS Direct COM 1,000 $1.44 $1,440.00 95,409 Rosenthal Arnon Chief Executive Officer 06/02/2025 DS Direct COM 52,087 $1.34 $69,713.24 2,414,657 Kenkare-Mitra Sara President and Head of R&D 06/02/2025 DS Direct COM 23,890 $1.34 $31,974.38 512,252 Grasso Marc Chief Financial Officer 06/02/2025 DS Direct COM 16,488 $1.34 $22,067.54 296,072 Romano Gary Chief Medical Officer 03/03/2025 DS Direct COM 16,306 $1.47 $23,927.42 332,977 Rosenthal Arnon Chief Executive Officer 03/03/2025 DS Direct COM 40,330 $1.47 $59,176.21 2,466,744 Kenkare-Mitra Sara President and Head of R&D 03/03/2025 DS Direct COM 29,073 $1.47 $42,661.72 536,142 Grasso Marc Chief Financial Officer 03/03/2025 DS Direct COM 18,091 $1.47 $26,546.73 312,560 Romano Gary Chief Medical Officer 12/02/2024 DS Direct COM 14,892 $2.52 $37,518.90 349,283 Kenkare-Mitra Sara President and Head of R&D 12/02/2024 DS Direct COM 26,500 $2.52 $66,764.10 565,215 Rosenthal Arnon Chief Executive Officer 12/02/2024 DS Direct COM 52,172 $2.52 $131,442.14 2,507,074 Grasso Marc Chief Financial Officer 12/02/2024 DS Direct COM 16,489 $2.52 $41,542.39 330,651 Romano Gary Chief Medical Officer 09/03/2024 DS Direct COM 8,478 $4.88 $41,385.36 179,795 Kenkare-Mitra Sara President and Head of R&D 09/03/2024 DS Direct COM 13,926 $4.88 $67,981.16 291,715 Rosenthal Arnon Chief Executive Officer 09/03/2024 DS Direct COM 26,499 $4.88 $129,386.67 1,948,746 Grasso Marc Chief Financial Officer 09/03/2024 DS Direct COM 7,297 $4.88 $35,620.31 130,740 Scheller Richard H Director 08/22/2024 DS Direct COM 44,250 $5.16 $228,387.53 35,000 Yaffe Kristine Director 08/12/2024 DS Direct COM 5,000 $5.06 $25,309.00 67,709 Hammond Paula Director 08/12/2024 DS Direct COM 10,500 $5.06 $53,179.35 60,209 Grasso Marc Chief Financial Officer 06/03/2024 DS Direct COM 6,920 $4.80 $33,207.70 138,037
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
No data available for this section
Transaction Type Key A = Acquired, D = Disposed A = Grant, award or other acquisition pursuant to Rule 16b-3(d)
C = Conversion of derivative security |
D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) |
E = Expiration of short derivative position |
F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. |
G = Gift |
H = Expiration (or cancellation) of long derivative position with value received |
I = Discretionary transaction in accordance with Rule 16b-3(f) |
J = Other |
L = Small acquisition under Rule 16a-6 |
M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 |
O = Exercise of out-of-the-money derivative security |
P = Open market or private purchase |
S = Open market or private sale |
U = Disposition pursuant to a tender of shares in a change of control transaction |
W = Acquisition or disposition by will or the laws of descent and distribution |
X = Exercise of in-the-money or at-the-money derivative security |
Z = Deposit into or withdrawal from voting trust
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