ALEC insider transactions

Director Scheller Richard H was granted 10,833 shares, increasing direct ownership by 11% to 106,199 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon sold $172,191 worth of shares (87,216 units at $1.97), decreasing direct ownership by 4% to 2,367,206 units (SEC Form 4) to cover withholding tax

Principal Accounting Officer Wong-Sarad Grace sold $17,813 worth of shares (9,184 units at $1.94) as part of a pre-agreed trading plan, decreasing direct ownership by 9% to 95,461 units (SEC Form 4) to satisfy tax liability

CFO & Chief Business Officer Berkley Neil Lindsay sold $38,221 worth of shares (19,360 units at $1.97), decreasing direct ownership by 5% to 379,900 units (SEC Form 4) to cover taxes

SEC Form 4 filed by Wong-Sarad Grace

Chief Executive Officer Rosenthal Arnon was granted 116,246 shares, increasing direct ownership by 5% to 2,454,422 units (SEC Form 4)

CFO & Chief Business Officer Berkley Neil Lindsay was granted 54,600 shares, increasing direct ownership by 16% to 399,260 units (SEC Form 4)

Principal Accounting Officer Wong-Sarad Grace sold $2,650 worth of shares (1,000 units at $2.65), decreasing direct ownership by 0.93% to 106,465 units (SEC Form 4)

Principal Accounting Officer Wong-Sarad Grace sold $7,012 worth of shares (3,367 units at $2.08), decreasing direct ownership by 3% to 107,465 units (SEC Form 4)

Principal Accounting Officer Wong-Sarad Grace sold $17,138 worth of shares (8,071 units at $2.12), decreasing direct ownership by 7% to 110,832 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon sold $173,822 worth of shares (81,864 units at $2.12), decreasing direct ownership by 3% to 2,338,176 units (SEC Form 4)

CFO & Chief Business Officer Berkley Neil Lindsay sold $62,954 worth of shares (29,649 units at $2.12), decreasing direct ownership by 8% to 344,660 units (SEC Form 4)

Principal Accounting Officer Wong-Sarad Grace sold $10,198 worth of shares (4,079 units at $2.50), decreasing direct ownership by 3% to 118,903 units (SEC Form 4)

Principal Accounting Officer Wong-Sarad Grace sold $5,751 worth of shares (4,753 units at $1.21), decreasing direct ownership by 4% to 122,982 units (SEC Form 4)

SEC Form 4 filed by Alector Inc.

Chief Executive Officer Rosenthal Arnon sold $116,827 worth of shares (104,347 units at $1.12), decreasing direct ownership by 4% to 2,420,040 units (SEC Form 4)

President and Head of R&D Kenkare-Mitra Sara sold $46,673 worth of shares (41,687 units at $1.12), decreasing direct ownership by 8% to 501,652 units (SEC Form 4)

Chief Bus Ofcr & Interim CFO Berkley Neil Lindsay sold $41,717 worth of shares (37,261 units at $1.12), decreasing direct ownership by 9% to 374,309 units (SEC Form 4)

Principal Accounting Officer Wong-Sarad Grace was granted 32,343 shares, increasing direct ownership by 31% to 135,791 units (SEC Form 4)

Chief Bus Ofcr & Interim CFO Berkley Neil Lindsay was granted 65,000 shares, increasing direct ownership by 19% to 411,570 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon was granted 174,167 shares, increasing direct ownership by 7% to 2,524,387 units (SEC Form 4)

Principal Accounting Officer Wong-Sarad Grace sold $14,756 worth of shares (5,910 units at $2.50), decreasing direct ownership by 5% to 103,448 units (SEC Form 4)

Principal Financial Officer Berkley Neil Lindsay sold $39,554 worth of shares (15,842 units at $2.50), decreasing direct ownership by 4% to 346,570 units (SEC Form 4)

President and Head of R&D Kenkare-Mitra Sara sold $59,019 worth of shares (23,638 units at $2.50), decreasing direct ownership by 4% to 543,339 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon sold $128,740 worth of shares (51,562 units at $2.50), decreasing direct ownership by 2% to 2,350,220 units (SEC Form 4)

Director Hammond Paula sold $32,998 worth of shares (14,000 units at $2.36), decreasing direct ownership by 16% to 74,909 units (SEC Form 4)

SEC Form 4 filed by Principal Financial Officer Berkley Neil Lindsay

President and Head of R&D Kenkare-Mitra Sara was granted 54,725 shares, increasing direct ownership by 11% to 566,977 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon was granted 137,125 shares, increasing direct ownership by 6% to 2,551,782 units (SEC Form 4)

New insider Berkley Neil Lindsay claimed ownership of 362,412 shares (SEC Form 3)

New insider Wong-Sarad Grace claimed ownership of 109,358 shares (SEC Form 3)

Director Yaffe Kristine sold $1,440 worth of shares (1,000 units at $1.44), decreasing direct ownership by 1% to 95,409 units (SEC Form 4)

Director Yaffe Kristine was granted 28,700 shares, increasing direct ownership by 42% to 96,409 units (SEC Form 4)

Director Garofalo Elizabeth A. was granted 28,700 shares, increasing direct ownership by 47% to 89,950 units (SEC Form 4)

Director Hammond Paula was granted 28,700 shares, increasing direct ownership by 48% to 88,909 units (SEC Form 4)

Director Altmeyer Mark was granted 28,700 shares, increasing direct ownership by 70% to 69,950 units (SEC Form 4)

Director Desouza Errol B was granted 28,700 shares, increasing direct ownership by 70% to 69,950 units (SEC Form 4)

Director Scheller Richard H was granted 28,700 shares, increasing direct ownership by 43% to 95,366 units (SEC Form 4)

Director Lavigne Louis J Jr was granted 28,700 shares, increasing direct ownership by 41% to 99,409 units (SEC Form 4)

Chief Financial Officer Grasso Marc sold $22,068 worth of shares (16,488 units at $1.34), decreasing direct ownership by 5% to 296,072 units (SEC Form 4)

President and Head of R&D Kenkare-Mitra Sara sold $31,974 worth of shares (23,890 units at $1.34), decreasing direct ownership by 4% to 512,252 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon sold $69,713 worth of shares (52,087 units at $1.34), decreasing direct ownership by 2% to 2,414,657 units (SEC Form 4)

Director Scheller Richard H was granted 15,833 shares, increasing direct ownership by 31% to 66,666 units (SEC Form 4)

Chief Financial Officer Grasso Marc sold $26,547 worth of shares (18,091 units at $1.47), decreasing direct ownership by 5% to 312,560 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon sold $59,176 worth of shares (40,330 units at $1.47), decreasing direct ownership by 2% to 2,466,744 units (SEC Form 4)

President and Head of R&D Kenkare-Mitra Sara sold $42,662 worth of shares (29,073 units at $1.47), decreasing direct ownership by 5% to 536,142 units (SEC Form 4)

Chief Medical Officer Romano Gary sold $23,927 worth of shares (16,306 units at $1.47), decreasing direct ownership by 5% to 332,977 units (SEC Form 4)

President and Head of R&D Kenkare-Mitra Sara sold $66,764 worth of shares (26,500 units at $2.52), decreasing direct ownership by 4% to 565,215 units (SEC Form 4)

Chief Financial Officer Grasso Marc sold $41,542 worth of shares (16,489 units at $2.52), decreasing direct ownership by 5% to 330,651 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon sold $131,442 worth of shares (52,172 units at $2.52), decreasing direct ownership by 2% to 2,507,074 units (SEC Form 4)

Chief Medical Officer Romano Gary sold $37,519 worth of shares (14,892 units at $2.52), decreasing direct ownership by 4% to 349,283 units (SEC Form 4)

Director Scheller Richard H was granted 15,833 shares, increasing direct ownership by 45% to 50,833 units (SEC Form 4)

Chief Financial Officer Grasso Marc was granted 216,400 shares, increasing direct ownership by 166% to 347,140 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon was granted 610,500 shares, increasing direct ownership by 31% to 2,559,246 units (SEC Form 4)

Chief Medical Officer Romano Gary was granted 184,380 shares, increasing direct ownership by 103% to 364,175 units (SEC Form 4)

President and Head of R&D Kenkare-Mitra Sara was granted 300,000 shares, increasing direct ownership by 103% to 591,715 units (SEC Form 4)

Chief Financial Officer Grasso Marc sold $35,620 worth of shares (7,297 units at $4.88), decreasing direct ownership by 5% to 130,740 units (SEC Form 4)

Chief Executive Officer Rosenthal Arnon sold $129,387 worth of shares (26,499 units at $4.88), decreasing direct ownership by 1% to 1,948,746 units (SEC Form 4)

Chief Medical Officer Romano Gary sold $41,385 worth of shares (8,478 units at $4.88), decreasing direct ownership by 5% to 179,795 units (SEC Form 4)

President and Head of R&D Kenkare-Mitra Sara sold $67,981 worth of shares (13,926 units at $4.88), decreasing direct ownership by 5% to 291,715 units (SEC Form 4)