Biogen (BIIB) Revenue — Quarter Ended Sep 30, 2025
Revenue for the quarter declined compared to the immediately preceding quarter. However, revenue increased relative to the same quarter one year earlier.
Key takeaway
Quarter ended Sep 30, 2025 · FY2025 Q3
Revenue for the quarter declined compared to the immediately preceding quarter. However, revenue increased relative to the same quarter one year earlier.
Financial snapshot
Reported revenue, sequential change, year-over-year change, and trailing four-quarter revenue.
Quarter revenue
$2.5B
Revenue reported for this quarter.
Quarter-over-quarter
-4.2%
Change from the immediately preceding quarter.
Year-over-year
+2.8%
Change from the comparable year-ago quarter.
Trailing four quarters
$10.1B
Sum of the latest four reported quarters.
Quarterly revenue trend
The latest four reported quarters with year-over-year comparisons.
| Period ended | Revenue | Year-over-year change |
|---|---|---|
| Dec 31, 2024 | $2.5B | +2.9% |
| Mar 31, 2025 | $2.4B | +6.1% |
| Jun 30, 2025 | $2.6B | +7.3% |
| Sep 30, 2025 | $2.5B | +2.8% |
Revenue performance
The reported revenue moved downward from the prior quarter, reflecting a sequential contraction. The year-over-year comparison shows an upward trajectory, indicating growth from the same period last year.
Quarterly comparison
Compared to the immediately preceding quarter, revenue was lower. Compared to the same quarter one year ago, revenue was higher.
What to watch
The sequential decline in revenue warrants attention given the prior quarter's higher level.