Alector, Inc. ALEC

FY2025 · ended Dec 31, 2025 · Revenue $21.05M, -79.1% YoY · Filed Feb 25, 2026

Alector, Inc. (ALEC) files with the SEC under industry code 2836, Biological Products, (No Diagnostic Substances). In fiscal 2025, which ended Dec 31, 2025, it reported revenue of $21.0 million and a net loss of $142.9 million. Free cash flow was -$184.1 million. As of Sep 30, 2026 it held $138.7 million in cash and investments and $21.0 million in total debt.

Revenue (TTM)
$173.47M
+151.2% vs year-ago TTM
Net income (TTM)
$41.41M
+138.4% vs year-ago TTM
Operating cash flow (TTM)
$-149.88M
+24.1% vs year-ago TTM
Free cash flow (TTM)
$-150.02M
+24.1% vs year-ago TTM
EPS (TTM)
$0.37
+134.6% vs year-ago TTM
Dividend per share
None
Shares outstanding
110.36M
+11.4% vs prior year
Net cash
$117.70M
as of Sep 30, 2026
Operating margin
20.2%
FY 2026

Company profile

Industry
Biological Products, (No Diagnostic Substances) (SIC 2836)
Listed as
ALEC (Nasdaq)
Fiscal year ends
December 31
Headquarters
South San Francisco, CA
SEC filer status
Accelerated filer, Smaller reporting company
SEC CIK
1653087
Former names
Alector LLC (until Sep 16, 2015)

Other Biological Products, (No Diagnostic Substances) companies

Key figures

Fiscal-year totals from the annual reports. Balance sheet lines are as of each year end.

Line
FY 2025
Dec 31, 2025
FY 2024
Dec 31, 2024
FY 2023
Dec 31, 2023
FY 2022
Dec 31, 2022
FY 2021
Dec 31, 2021
Revenue
$21.0M
$100.6M
$97.1M
$133.6M
$207.1M
Operating income
-$156.0M
-$145.0M
-$151.7M
-$137.8M
-$37.4M
Net income
-$142.9M
-$119.0M
-$130.4M
-$133.3M
-$36.3M
Diluted EPS
-$1.39
-$1.23
-$1.56
-$1.62
—
Operating cash flow
-$184.0M
-$229.9M
-$184.2M
-$20.3M
$298.6M
Free cash flow
-$184.1M
-$231.2M
-$186.5M
-$24.4M
$295.3M
Total assets
$293.2M
$468.3M
$621.8M
$787.6M
$814.7M
Total liabilities
$262.6M
$341.5M
$487.7M
$573.2M
$513.9M
Stockholders' equity
$30.6M
$126.8M
$134.2M
$214.4M
$300.7M
Cash and investments
$256.0M
$413.4M
$548.9M
$712.9M
$735.3M
Total debt
$36.9M
$43.1M
$38.9M
$43.3M
$47.6M

Recent SEC filings

Recent SEC filings
Form Description Filed Period
8-K Current report
Material agreement, Other events
Oct 16, 2026 Oct 15, 2026
8-K Current report
Officer or director change
Oct 14, 2026 Oct 13, 2026
8-K Current report
Material agreement, Results of operations, Regulation FD disclosure, Other events
Oct 5, 2026 Sep 30, 2026
10-Q Quarterly report Aug 6, 2026 Jun 30, 2026
8-K Current report
Results of operations
Aug 6, 2026 Aug 6, 2026
8-K Current report
Agreement ended
Jul 8, 2026 Jul 6, 2026

Source: SEC EDGAR filings. This is company-reported data, not investment advice.