Filing Flows › Biogen (BIIB) › Guidance history
Biogen (BIIB) guidance history: what it guided and what it reported
Biogen gave guidance in 12 earnings releases on file since Feb 13, 2024. Its releases raised guidance 4 times and lowered it once.
Adjusted tax rate
Every guided period is still to be reported.
| Period | Guided (and how it moved) | Reported | Result | vs midpoint |
|---|---|---|---|---|
| FY2026 | 17.0% (Feb 6, 2026) → reaffirmed 17.0% (Apr 29, 2026) | — | to be reported | — |
GAAP EPS
This line is not in the statements Filing Flows reads, so there is no reported figure to hold it to.
| Period | Guided (and how it moved) | Reported | Result | vs midpoint |
|---|---|---|---|---|
| FY2024 | $0.52 (Aug 1, 2024) | — | — | — |
Adjusted EPS
The guide is on an adjusted basis that the GAAP statements do not show, so there is no reported figure to hold it to.
| Period | Guided (and how it moved) | Reported | Result | vs midpoint |
|---|---|---|---|---|
| Q2 2026 | $0.25 (Apr 29, 2026) | — | — | — |
| FY2026 | $15.25–$16.25 (Feb 6, 2026) → lowered $14.25–$15.25 (Apr 29, 2026) → raised $15.25–$16.25 (Jul 29, 2026) → lowered $12.20–$13.00 (Oct 28, 2026) | — | to be reported | — |
| FY2025 | $15.25–$16.25 (Feb 12, 2025) → lowered −$0.95 (May 1, 2025) → raised $15.50–$16.00 (Jul 31, 2025) → lowered $0.25 (Oct 30, 2025) | — | — | — |
| FY2024 | $15.00–$16.00 (Feb 13, 2024) → reaffirmed $15.00–$16.00 (Apr 24, 2024) → raised $15.75–$16.25 (Aug 1, 2024) → raised $16.10–$16.60 (Oct 30, 2024) | — | — | — |
The latest quarter
Biogen, Q3 2026: revenue $2.8B (+11% year over year), operating margin -0.3%, net loss $20.6M, operating cash flow $641M. The chart follows the revenue to costs, profit and cash.
Questions
Does Biogen beat its guidance?
Biogen gave guidance in 12 earnings releases on file since Feb 13, 2024. Its releases raised guidance 4 times and lowered it once.
How often does Biogen raise guidance?
Its earnings releases raised guidance 4 times and lowered it once since Feb 13, 2024.
Each guided period is held to the last guidance given before its figures were reported; a single figure counts as in line within 1% (0.25 pts for a rate). Reported figures are GAAP, from the company's filings; adjusted guidance shows its moves only.