Filing Flows › Alector (ALEC) › Q3 2025
Alector (ALEC) Q3 2025 earnings results (third quarter 2025)
10-Q filed Nov 6, 2025
Alector (ALEC) reported revenue of $3.3M for the third quarter 2025 (Q3 2025), -79% from a year earlier and -59% from the quarter before.
Alector, Q3 2025: revenue $3.3M (-79% year over year), net loss $34.7M, operating cash flow −$32.5M. The chart follows the revenue to costs, profit and cash.
| Q3 2025 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $3.3M | -59% | -79% |
| Operating profit | −$37.6M | — | — |
| Net earnings | −$34.7M | — | — |
| Operating cash flow | −$32.5M | — | — |
What changed
Revenue was $3.3M in Q3 2025, down 79% year over year and down 59% from the previous quarter.
Operating costs exceeded revenue by $37.6M, an operating margin of -1153.6%. Total costs fell 36% while revenue fell 79%. The quarter ended with a net loss of $34.7M, wider than the previous quarter's $30.5M loss.
Operating cash flow was −$32.5M. Non-cash charges added back $1.2M of depreciation and amortization and $6.4M of share-based compensation. Working capital and other items used $5.5M. Capital expenditures of $11K exceeded it, leaving free cash flow of −$32.5M.
Questions
What was Alector's revenue in the third quarter 2025?
Alector (ALEC) reported revenue of $3.3M for the third quarter 2025 (Q3 2025), -79% from a year earlier and -59% from the quarter before.
Source: Alector 10-Q on SEC EDGAR.