ALEC
Alector, Inc. · Healthcare · Market cap $227.2M
Insiders sold $296K net in the last 90 days ·3 sellers, 0 buyers· 3 of 5 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 4, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$1.0M
reported sales (SEC code S)
Unique Insiders
4
in the rolling window
Latest filing
Sep 4, 2026
Wong-Sarad Grace
Alector, Inc. (ALEC) has 33 SEC Form 4 filings (39 transaction rows) in the rolling window, disclosed by 4 distinct insiders. Most recent filing: Sep 4, 2026.
Inside the rolling window, 4 insiders at Alector, Inc. reported no open-market purchases and 21 open-market sales totaling $1.0M. The most active filer is Principal Accounting Officer Wong-Sarad Grace with 12 filings. Insiders have net sold $532K over the trailing 6 months. The most recent open-market filing is a sale of 656 shares by Principal Accounting Officer Wong-Sarad Grace, dated Sep 2, 2026, worth $2K.
- Industry:Biotechnology
- CEO:Arnon Rosenthal
- Employees:103
- HQ:South San Francisco, CA, US
- IPO:2019-02-07
| Source | |||||||
|---|---|---|---|---|---|---|---|
Wong-Sarad GraceFirst in 3 months | Principal Accounting Officer | Sale | 656 | $2K | Sep 4 | -17.3% | SEC ↗ |
Wong-Sarad GraceFirst in 3 months | Principal Accounting Officer | Sale | 5,165 | $14K | Sep 4 | -17.3% | SEC ↗ |
Wong-Sarad GraceFirst in 3 months | Principal Accounting Officer | Sale | 3,625 | $9K | Sep 4 | -17.3% | SEC ↗ |
Berkley Neil LindsayFirst in 3 months | CFO & Chief Business Officer | Sale | 29,251 | $78K | Sep 4 | -17.3% | SEC ↗ |
Rosenthal ArnonFirst in 3 months | Chief Executive Officer | Sale | 72,606 | $193K | Sep 4 | -17.3% | SEC ↗ |
| Principal Accounting Officer | Sale | 5,709 | $11K | Jun 3 | +14.6% | SEC ↗ | |
| Principal Accounting Officer | Sale | 3,475 | $7K | Jun 3 | +14.6% | SEC ↗ | |
Rosenthal ArnonFirst in 3 months | Chief Executive Officer | Sale | 87,216 | $172K | Jun 3 | +14.6% | SEC ↗ |
Berkley Neil LindsayFirst in 3 months | CFO & Chief Business Officer | Sale | 19,360 | $38K | Jun 3 | +14.6% | SEC ↗ |
| Principal Accounting Officer | Sale | 1,820 | $5K | Apr 17 | -20.8% | SEC ↗ | |
| Principal Accounting Officer | Sale | 1,000 | $3K | Mar 12 | — | SEC ↗ | |
Rosenthal ArnonFirst in 3 months | Chief Executive Officer | Sale | 81,864 | $174K | Mar 3 | — | SEC ↗ |
| Principal Accounting Officer | Sale | 3,367 | $7K | Mar 3 | — | SEC ↗ | |
| Principal Accounting Officer | Sale | 8,071 | $17K | Mar 3 | — | SEC ↗ | |
Berkley Neil LindsayFirst in 3 months | CFO & Chief Business Officer | Sale | 29,649 | $63K | Mar 3 | — | SEC ↗ |
| Principal Accounting Officer | Sale | 4,079 | $10K | Feb 26 | — | SEC ↗ | |
| Principal Accounting Officer | Sale | 4,753 | $6K | Dec 8 | — | SEC ↗ | |
Rosenthal ArnonFirst filing | Chief Executive Officer | Sale | 104,347 | $117K | Dec 3 | — | SEC ↗ |
Wong-Sarad GraceFirst filing | Principal Accounting Officer | Sale | 8,056 | $9K | Dec 3 | — | SEC ↗ |
Kenkare-Mitra SaraFirst filing | President and Head of R&D | Sale | 41,687 | $47K | Dec 3 | — | SEC ↗ |
Berkley Neil LindsayFirst filing | Chief Bus Ofcr & Interim CFO | Sale | 37,261 | $42K | Dec 3 | — | SEC ↗ |
Frequently asked questions
How many SEC Form 4 insider filings does ALEC have?
Alector, Inc. (ALEC) has 33 SEC Form 4 filings (39 transaction rows) in the rolling 365-day window, disclosed by 4 distinct insiders. Most recent filing: Sep 4, 2026.
When was the most recent SEC Form 4 filing for ALEC?
The most recent Form 4 filing for ALEC on Tracefour is dated Sep 4, 2026.
Who is the most active insider at ALEC?
The most active SEC Form 4 filer at ALEC in the rolling window is Principal Accounting Officer Wong-Sarad Grace, with 12 filings.
What is the net insider flow at ALEC over the last 6 months?
Over the trailing 180 days, insiders at ALEC have net sold $532K based on SEC Form 4 disclosures.
What is the total insider buy and sell value at ALEC in the current window?
Inside the rolling window, insiders at ALEC bought $0 and sold $1.0M based on SEC Form 4 filings.
Can I get alerts for ALEC insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Alector, Inc. (ALEC). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Alector, Inc. is in the Healthcare sector.