Rosenthal Arnon
SEC CIK 1757770 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| ALEC | Alector, Inc. | CEO, Dir | 2.29M | — | $22.48M | 29 | 2021-09-20 | 2026-09-03 |
Most active insiders at ALEC, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Rosenthal Arnon | CEO, Dir | — | $656.1K |
| 2 | Berkley Neil Lindsay | Chief Bus Ofcr, Interim CFO | — | $220.8K |
| 3 | Wong-Sarad Grace | Principal Accounting Off | — | $99.0K |
| 4 | Kenkare-Mitra Sara | Pres, Head of R, D | — | $46.7K |
| 5 | GAROFALO ELIZABETH A. | Dir | — | — |
| 6 | Hammond Paula | Dir | — | — |
| 7 | Yaffe Kristine | Dir | — | — |
| 8 | Altmeyer Mark | Dir | — | — |
| 9 | SCHELLER RICHARD H | Dir | — | — |
| 10 | LAVIGNE LOUIS J JR | Dir | — | — |
Transactions 29
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-04 17:45 | 2026-09-03 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $2.66 | -72.6K | 2.29M | -3% | -$193.5K | |
| MI | 2026-08-21 18:00 | 2026-08-19 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | G - Gift | $0.00 | 0 | 1.00M | New | $0 |
| 2026-06-03 17:30 | 2026-06-02 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $1.97 | -87.2K | 2.37M | -4% | -$172.2K | |
| 2026-03-13 | 2026-03-13 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | A - Grant | $0.00 | +116.2K | 2.45M | +5% | $0 | |
| 2026-03-03 | 2026-03-02 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $2.12 | -81.9K | 2.34M | -3% | -$173.6K | |
| 2025-12-03 | 2025-12-03 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $1.12 | -104.3K | 2.42M | -4% | -$116.9K | |
| D | 2025-11-12 | 2025-11-10 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | A - Grant | $0.00 | +174.2K | 2.52M | +7% | $0 |
| 2025-09-04 | 2025-09-02 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $2.50 | -51.6K | 2.35M | -2% | -$128.9K | |
| D | 2025-07-01 | 2025-07-01 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | A - Grant | $0.00 | +137.1K | 2.55M | +6% | $0 |
| 2025-06-04 | 2025-06-02 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $1.34 | -52.1K | 2.41M | -2% | -$69.8K | |
| 2025-03-05 | 2025-03-03 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $1.47 | -40.3K | 2.47M | -2% | -$59.3K | |
| 2024-12-03 | 2024-12-02 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $2.52 | -52.2K | 2.51M | -2% | -$131.5K | |
| 2024-10-02 | 2024-10-01 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | A - Grant | $0.00 | +610.5K | 2.56M | +31% | $0 | |
| 2024-09-04 | 2024-09-03 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $4.88 | -26.5K | 1.95M | -1% | -$129.3K | |
| 2024-06-04 | 2024-06-03 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $4.80 | -25.1K | 1.98M | -1% | -$120.6K | |
| 2024-03-05 | 2024-03-04 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $6.92 | -18.8K | 2.00M | -0.9% | -$130.4K | |
| 2023-12-06 | 2023-12-04 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $5.56 | -23.8K | 2.02M | -1% | -$132.5K | |
| D | 2023-10-03 | 2023-10-01 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | A - Grant | $0.00 | +397.6K | 2.04M | +24% | $0 |
| 2023-09-06 | 2023-09-05 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $5.19 | -5,647 | 1.65M | -0.3% | -$29.3K | |
| 2023-06-05 | 2023-06-02 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $6.90 | -5,255 | 1.65M | -0.3% | -$36.3K | |
| 2023-03-21 | 2023-03-03 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | A - Grant | $0.00 | +43.0K | 1.67M | +3% | $0 | |
| 2023-03-21 | 2023-03-17 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $6.22 | -15.2K | 1.66M | -0.9% | -$94.5K | |
| 2023-03-03 | 2023-03-02 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $8.32 | -5,849 | 1.63M | -0.4% | -$48.7K | |
| D | 2022-10-04 | 2022-10-01 | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | A - Grant | $0.00 | +179.2K | 1.63M | +12% | $0 |
| MI | 2021-11-12 | 2021-11-10+ | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $25.00 | -110.0K | 2.03M | -5% | -$2.75M |
| MI | 2021-11-10 | 2021-11-08+ | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $25.00 | -200.0K | 667.5K | -23% | -$5.00M |
| MI | 2021-11-08 | 2021-11-04+ | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $25.00 | -200.0K | 697.5K | -22% | -$5.00M |
| MI | 2021-09-23 | 2021-09-22+ | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $25.31 | -109.6K | 2.32M | -5% | -$2.77M |
| MI | 2021-09-22 | 2021-09-20+ | ALEC | Alector, Inc. | Rosenthal Arnon | CEO, Dir | S - Sale | $25.96 | -200.0K | 2.51M | -7% | -$5.19M |
Purchase Sale Sale after option exercise All abbreviations