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ALEC SCHEDULE 13G: SEC filing

Filed with the SEC on · accession 0001346824-26-000247

ALEC filed a SCHEDULE 13G (schedule 13g) with the SEC on Oct 26, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +0.0% by the first close after the filing.

Summary of the filing

RA Capital Management, Peter Kolchinsky, Rajeev Shah, and RA Capital Healthcare Fund filed a joint filing agreement as an exhibit to a Schedule 13G regarding their beneficial ownership of Alector, Inc. common stock.

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Key details

FilerRA Capital Management, L.P.
FilerRA Capital Healthcare Fund, L.P.
Subject companyAlector, Inc.
Authorized signatory, ra capital management, l.p.Peter Kolchinsky
FilerRajeev Shah

How ALEC stock reacted

Close before

$1.83

Oct 23, 2026

First close after

+0.00%

$1.83

5 trading days

+20.77%

$2.21

Since filing

+25.14%

$2.29

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Frequently asked questions

What did ALEC file with the SEC on Oct 26, 2026?

ALEC filed a SCHEDULE 13G (SEC filing). RA Capital Management, Peter Kolchinsky, Rajeev Shah, and RA Capital Healthcare Fund filed a joint filing agreement as an exhibit to a Schedule 13G regarding their beneficial ownership of Alector, Inc. common stock.

How do I read a SCHEDULE 13G?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G (schedule 13g): A report the company filed with the SEC (the US market regulator).

How did ALEC stock react to this filing?

ALEC closed at $1.83 before the filing and $1.83 on Oct 26, 2026 (+0.00%). Five trading days later: $2.21 (+20.77%).

Other ALEC SEC filings

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