Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2026-06-02 Sale | 2026-06-03 5:30 pm | Alector Inc. | ALEC | Rosenthal Arnon Chief Executive Officer | 87,216 | $1.9743 | $172,191 | 6,297,581 (Indirect Direct) | View |
| 2026-06-02 Sale | 2026-06-03 5:30 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 9,184 | $1.9396 | $17,813 | 95,461 (Direct) | View |
| 2026-06-02 Sale | 2026-06-03 5:30 pm | Alector Inc. | ALEC | Berkley Neil Lindsay CFO & Chief Business Officer | 19,360 | $1.9742 | $38,221 | 379,900 (Direct) | View |
| 2026-04-16 Sale | 2026-04-17 5:30 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 1,820 | $2.65 | $4,823 | 104,645 (Direct) | View |
| 2026-03-10 Sale | 2026-03-12 7:30 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 1,000 | $2.65 | $2,650 | 106,465 (Direct) | View |
| 2026-03-03 Sale | 2026-03-03 6:01 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 3,367 | $2.0826 | $7,012 | 107,465 (Direct) | View |
| 2026-03-02 Sale | 2026-03-03 4:05 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 8,071 | $2.1234 | $17,138 | 110,832 (Direct) | View |
| 2026-03-02 Sale | 2026-03-03 4:05 pm | Alector Inc. | ALEC | Rosenthal Arnon Chief Executive Officer | 81,864 | $2.1233 | $173,822 | 6,268,551 (Indirect Direct) | View |
| 2026-03-02 Sale | 2026-03-03 4:05 pm | Alector Inc. | ALEC | Berkley Neil Lindsay CFO & Chief Business Officer | 29,649 | $2.1233 | $62,954 | 344,660 (Direct) | View |
| 2026-02-26 Sale | 2026-02-26 6:11 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 4,079 | $2.5 | $10,198 | 118,903 (Direct) | View |
| 2025-12-05 Sale | 2025-12-08 6:03 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 4,753 | $1.21 | $5,751 | 122,982 (Direct) | View |
| 2025-12-03 Sale | 2025-12-03 9:07 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 8,056 | $1.1195 | $9,019 | 127,735 (Direct) | View |
| 2025-12-03 Sale | 2025-12-03 9:06 pm | Alector Inc. | ALEC | Rosenthal Arnon Chief Executive Officer | 104,347 | $1.1196 | $116,827 | 6,350,415 (Indirect Direct) | View |
| 2025-12-03 Sale | 2025-12-03 9:05 pm | Alector Inc. | ALEC | Kenkare-Mitra Sara President and Head of R&D | 41,687 | $1.1196 | $46,673 | 501,652 (Direct) | View |
| 2025-12-03 Sale | 2025-12-03 9:04 pm | Alector Inc. | ALEC | Berkley Neil Lindsay Chief Bus Ofcr & Interim CFO | 37,261 | $1.1196 | $41,717 | 374,309 (Direct) | View |
| 2025-09-02 Sale | 2025-09-04 4:33 pm | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 5,910 | $2.4968 | $14,756 | 103,448 (Direct) | View |
| 2025-09-02 Sale | 2025-09-04 4:32 pm | Alector Inc. | ALEC | Berkley Neil Lindsay Principal Financial Officer | 15,842 | $2.4968 | $39,554 | 346,570 (Direct) | View |
| 2025-09-02 Sale | 2025-09-04 4:29 pm | Alector Inc. | ALEC | Kenkare-Mitra Sara President and Head of R&D | 23,638 | $2.4968 | $59,019 | 543,339 (Direct) | View |
| 2025-09-02 Sale | 2025-09-04 4:27 pm | Alector Inc. | ALEC | Rosenthal Arnon Chief Executive Officer | 51,562 | $2.4968 | $128,740 | 6,280,595 (Indirect Direct) | View |
| 2025-08-26 Sale | 2025-08-27 6:37 pm | Alector Inc. | ALEC | Hammond Paula Director | 14,000 | $2.357 | $32,998 | 74,909 (Direct) | View |
| 2025-06-20 Sale | 2025-06-23 4:05 pm | Alector Inc. | ALEC | Yaffe Kristine Director | 1,000 | $1.44 | $1,440 | 95,409 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-06-17 Option Award | 2026-06-17 4:05 pm | N/A 2036-06-16 | Alector Inc. | ALEC | Yaffe Kristine Director | 38,150 | $0 | 133,559 (Direct) | View |
| 2026-06-17 Option Award | 2026-06-17 4:05 pm | N/A 2036-06-16 | Alector Inc. | ALEC | SCHELLER RICHARD H Director | 38,150 | $0 | 144,349 (Direct) | View |
| 2026-06-17 Option Award | 2026-06-17 4:05 pm | N/A 2036-06-16 | Alector Inc. | ALEC | Hammond Paula Director | 38,150 | $0 | 113,059 (Direct) | View |
| 2026-06-17 Option Award | 2026-06-17 4:05 pm | N/A 2036-06-16 | Alector Inc. | ALEC | GAROFALO ELIZABETH A. Director | 38,150 | $0 | 128,100 (Direct) | View |
| 2026-06-17 Option Award | 2026-06-17 4:05 pm | N/A 2036-06-16 | Alector Inc. | ALEC | Altmeyer Mark Director | 38,150 | $0 | 108,100 (Direct) | View |
| 2026-06-17 Option Award | 2026-06-17 4:05 pm | N/A 2036-06-16 | Alector Inc. | ALEC | DESOUZA ERROL B Director | 38,150 | $0 | 108,100 (Direct) | View |
| 2026-06-17 Option Award | 2026-06-17 4:05 pm | N/A 2036-06-16 | Alector Inc. | ALEC | LAVIGNE LOUIS J JR Director | 38,150 | $0 | 148,111 (Direct) | View |
| 2026-06-01 Option Award | 2026-06-03 7:08 pm | N/A N/A | Alector Inc. | ALEC | SCHELLER RICHARD H Director | 10,833 | $0 | 106,199 (Direct) | View |
| 2026-03-13 Option Award | 2026-03-13 4:30 pm | N/A N/A | Alector Inc. | ALEC | Rosenthal Arnon Chief Executive Officer | 116,246 | $0 | 6,384,797 (Direct) | View |
| 2026-03-15 Option Award | 2026-03-13 4:30 pm | N/A N/A | Alector Inc. | ALEC | Berkley Neil Lindsay CFO & Chief Business Officer | 54,600 | $0 | 399,260 (Direct) | View |
| 2025-11-10 Option Award | 2025-11-12 4:19 pm | N/A 2035-11-09 | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 80,878 | $0 | 184,326 (Direct) | View |
| 2025-11-10 Option Award | 2025-11-12 4:17 pm | N/A 2035-11-09 | Alector Inc. | ALEC | Berkley Neil Lindsay Chief Bus Ofcr & Interim CFO | 260,000 | $0 | 606,570 (Direct) | View |
| 2025-11-10 Option Award | 2025-11-12 4:10 pm | N/A 2035-11-09 | Alector Inc. | ALEC | Rosenthal Arnon Chief Executive Officer | 696,667 | $0 | 6,977,262 (Direct) | View |
| 2025-07-01 Option Award | 2025-07-01 5:00 pm | N/A 2035-07-01 | Alector Inc. | ALEC | Berkley Neil Lindsay Principal Financial Officer | 18,000 | $0 | 18,000 (Direct) | View |
| 2025-07-01 Option Award | 2025-07-01 5:00 pm | N/A 2035-07-01 | Alector Inc. | ALEC | Kenkare-Mitra Sara President and Head of R&D | 72,975 | $0 | 585,227 (Direct) | View |
| 2025-07-01 Option Award | 2025-07-01 5:00 pm | N/A 2035-07-01 | Alector Inc. | ALEC | Rosenthal Arnon Chief Executive Officer | 182,825 | $0 | 6,527,857 (Direct) | View |
Ownership | 2025-06-30 4:45 pm | N/A N/A | Alector Inc. | ALEC | Berkley Neil Lindsay Principal Financial Officer | 0 | $0 | 375,387 (Direct) | View |
Ownership | 2025-06-30 4:45 pm | N/A N/A | Alector Inc. | ALEC | Wong-Sarad Grace Principal Accounting Officer | 0 | $0 | 199,588 (Direct) | View |
| 2025-06-11 Option Award | 2025-06-12 6:05 pm | N/A 2035-06-10 | Alector Inc. | ALEC | Hammond Paula Director | 38,150 | $0 | 98,359 (Direct) | View |