When Does Biogen Report Earnings?
BIIB · Nasdaq · Next earnings date for Biogen Inc., estimated from its SEC filing history, with a live countdown in trading days.
Next earnings date
Oct 15, 2026 – Nov 12, 2026
Fiscal Q3 2026 results · quarter ended September 30, 2026
This company's reporting dates vary too much for a precise estimate, so we show an expected window instead of a single date.
After that
Fiscal Q4 2026
Estimated Feb 5, 2027 · before the open
Fiscal year
January 1 – December 31
fiscal 2026 ends Dec 31, 2026
BIIB earnings date history
The last 8 earnings releases, from Biogen's SEC filings — its earnings 8-Ks, or the quarterly report itself when results are published that way. The “days after” column is how long after the fiscal quarter ended the company reported — the pattern behind the estimate above.
| Quarter | Reported | Time | Days after |
|---|---|---|---|
| Q2 2026ended Jun 30 | Jul 29, 2026Wednesday | Before open | 29 |
| Q1 2026ended Mar 31 | Apr 29, 2026Wednesday | Before open | 29 |
| Q4 2025ended Dec 31 | Feb 6, 2026Friday | Before open | 37 |
| Q3 2025ended Sep 30 | Oct 30, 2025Thursday | Before open | 30 |
| Q2 2025ended Jun 30 | Jul 31, 2025Thursday | Before open | 31 |
| Q1 2025ended Mar 31 | May 1, 2025Thursday | Before open | 31 |
| Q4 2024ended Dec 31 | Feb 12, 2025Wednesday | Before open | 43 |
| Q3 2024ended Sep 30 | Oct 30, 2024Wednesday | Before open | 30 |
How this estimate is made
Companies report on a rhythm. We read every Form 8-K earnings release and 10-Q/10-K Biogen has filed with the SEC, work out how many days after each fiscal quarter ended the results came out and on which weekday, and project that pattern onto the current quarter — using the same fiscal quarter from prior years, since fourth-quarter reports run later than the others. The result is snapped to a trading day and capped at the SEC filing deadline for a large accelerated filer.
Whether a company reports before the open or after the close comes from the time its past earnings 8-Ks reached the SEC. When Biogen announces an exact date, this page switches from estimated to confirmed. Until then, verify the date with the company's investor relations site before trading around it.
Frequently asked questions
When does Biogen (BIIB) report earnings?›
Biogen is expected to report Fiscal Q3 2026 earnings between Thursday, October 15, 2026 and Thursday, November 12, 2026.
How many trading days until BIIB earnings?›
Between 9 and 29 trading days, depending on the exact date.
Does BIIB report before or after the market opens?›
Biogen typically reports before the market opens, based on when its past earnings 8-K filings reached the SEC.
Estimated dates are projections from public SEC filings, not announcements by Biogen Inc. Confirm with the company before making decisions. Not investment advice.