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Active cluster sell — 3 distinct insiders, $296.1K, window ends Sep 4, 2026.
Figures computed from official regulatory filings — .
Analysttarget 3.1 USD (+56%) · consensus 3.43/5 · 3 buy · 2 hold · 2 sell
Ownershipinsiders 9.52% · institutions 93.29% · short 5.8% of float
In USD · as of Oct 5, 2026
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Alector, Inc., a clinical stage biotechnology company, develops therapies to counteract the progression of neurodegeneration in the United States. Its pipeline includes Nivisnebart, an investigational human recombinant monoclonal antibody for treating prevalent neurodegenerative diseases; AL137, an anti-amyloid beta antibody paired in preclinical development for the potential treatment of Alzheimer's disease; and AL050, a GCase enzyme replacement therapy in preclinical development for the potential treatment of Parkinson's disease and Lewy body dementia in patients having GBA1 gene mutations. The company also develops its preclinical and research pipeline comprising AL064, a tau siRNA for Alzheimer's disease and other tauopathies; ADP062-ABC, an alpha-synuclein siRNA for Parkinson's disease; and ADP065-ABC, an NLRP3 siRNA for neurodegenerative conditions. It has a strategic collaboration agreement with GlaxoSmithKline plc for the development and commercialization of progranulin-elevating monoclonal antibodies, including Latozinemab and Nivisnebart. The company was founded in 2013 and is headquartered in South San Francisco, California.
Market information source · Oct 5, 2026
Periods recorded in the consulted sources. These do not certify the legal dates of name changes.
SEC company identity · Oct 5, 2026
Open-market timeline · full history
7 buys248 sells— close pricebar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Signals | Details | |
|---|---|---|---|---|---|
| Wong-Sarad Grace | Sell | $1.8K | SEC |
| Wong-Sarad Grace | Sell | $9.1K | SEC |
| Rosenthal Arnon | Sell | $193.5K | SEC |
| Wong-Sarad Grace | Sell | $13.8K | SEC |
| Berkley Neil Lindsay | Sell | $77.9K | Unusual size | SEC |
| Rosenthal Arnon | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Rosenthal Arnon | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Rosenthal Arnon | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Rosenthal Arnon | Gift | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Wong-Sarad Grace | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Hammond Paula | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| DESOUZA ERROL B | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| LAVIGNE LOUIS J JR | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Yaffe Kristine | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| GAROFALO ELIZABETH A. | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| SCHELLER RICHARD H | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Altmeyer Mark | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Hammond Paula | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Altmeyer Mark | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| LAVIGNE LOUIS J JR | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Yaffe Kristine | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| DESOUZA ERROL B | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| SCHELLER RICHARD H | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| GAROFALO ELIZABETH A. | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Rosenthal Arnon | Sell | $172.2K | SEC |