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NASDAQ: ALEC
Alector Inc Stock Ownership - Who owns Alector?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Alector Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Grace WongsaradPrincipal Accounting Officer2026-03-101,000$2.65
$2.65kSell
Grace WongsaradPrincipal Accounting Officer2026-03-033,367$2.08
$7.01kSell
Arnon RosenthalChief Executive Officer2026-03-0281,864$2.12
$173.80kSell
Grace WongsaradPrincipal Accounting Officer2026-03-028,071$2.12
$17.13kSell
Neil Lindsay BerkleyCFO Chief Business Officer2026-03-0229,649$2.12
$62.94kSell
Grace WongsaradPrincipal Accounting Officer2026-02-264,079$2.50
$10.20kSell
Grace WongsaradPrincipal Accounting Officer2025-12-054,753$1.21
$5.75kSell
Arnon RosenthalChief Executive Officer2025-12-03104,347$1.12
$116.87kSell
Neil Lindsay BerkleyChief Bus Ofcr Interim CFO2025-12-0337,261$1.12
$41.73kSell
Sara KenkaremitraPresident and Head of RD2025-12-0341,687$1.12
$46.69kSell

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Net Insider Buy/Sell (L12M) Ownership

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ALEC Shareholders

What type of owners hold Alector Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Polaris Venture Management Co VI LLC20.58%22,712,011$46.56MInsider
Terrance McGuire11.74%12,952,589$26.55MInsider
Tcg Crossover Management LLC9.06%10,000,000$20.50MInstitution
Blackrock Inc6.48%7,147,766$14.65MInstitution
Vanguard Group Inc6.26%6,908,054$14.16MInstitution
Foresite Capital Management IV LLC3.52%3,887,200$7.97MInstitution
Merck Co Inc3.21%3,545,719$7.27MInstitution
Acadian Asset Management LLC3.12%3,442,449$7.06MInstitution
683 Capital Management LLC3.04%3,350,000$6.87MInstitution
Balyasny Asset Management LP2.96%3,265,575$6.69MInstitution

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ALEC vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ALEC64.04%35.96%Net SellingNet Selling
SLGL24.44%75.56%Net BuyingNet Buying
SRZN30.45%69.55%Net BuyingNet Buying
EDIT51.02%33.67%Net SellingNet Selling
VYGR53.27%46.73%Net SellingNet Selling
View Top Biotech Stocks

Alector Stock Ownership FAQ

Who owns Alector?

Alector (NASDAQ: ALEC) is owned by 76.53% institutional shareholders, 42.97% Alector insiders, and 0.00% retail investors. Polaris Venture Management Co VI LLC is the largest individual Alector shareholder, owning 22.71M shares representing 20.58% of the company. Polaris Venture Management Co VI LLC's Alector shares are currently valued at $46.79M.

If you're new to stock investing, here's how to buy Alector stock.
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