Senior insider sale
Chief Executive Officer at ALECTOR, INC. — senior position signals high conviction
$281.0K
171.92K shares
What this filing means
ROSENTHAL ARNON plans to sell 171.92K shares of ALECTOR, INC. valued at approximately $281.0K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 2/27/2026ACC: 0001193125-26-083401
DirectorOfficer· Chief Executive Officer
Since Feb 2019
171.92K
Shares to sell
$281.0K
Approx. market value
132.80K
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months1
Vesting of Restricted Stock Units
(1)
2/27/2026
132.80KTotal acquired132.80K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
2/27/2026 | Vesting of Restricted Stock Units (1) | 132.80K | — |
| Total | 132.80K | ||
Planned & Completed Dispositions2
Completed
—Completed
Units to sell
104.35K
Market value
$116.8K
12/3/2025
Planned — Approximate Date
NasdaqPlanned
Units to sell
67.57K
Market value
$164.2K
3/2/2026
Total
Units
171.92K
Value
$281.0K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
12/3/2025 | 104.35K | $116.8K | — | Completed |
| Planned — Approximate Date | ||||
3/2/2026 | 67.57K | $164.2K | Nasdaq | Planned |
| Total | 171.92K | $281.0K | ||