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Alector, Inc.

For the period ended Dec 31, 2025. Filed Feb 25, 2026.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 25, 2026

ALEC$2.53+2.8%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Consolidated Statements of Operations and Comprehensive Loss

(In thousands, except share and per share data)

Year Ended December 31,
20252024
Collaboration revenue$21,045$100,558
Operating expenses:
Research and development123,065185,940
General and administrative53,98759,615
Total operating expenses177,052245,555
Loss from operations(156,007)(144,997)
Other income, net13,24626,076
Loss before income taxes(142,761)(118,921)
Income tax expense168128
Net loss(142,929)(119,049)
Unrealized gain (loss) on marketable securities(95)77
Comprehensive loss$(143,024)$(118,972)
Net loss per share, basic and diluted$(1.39)$(1.23)
Shares used in computing net loss per share, basic and diluted102,998,97896,588,177
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.