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BIOGEN INC.

For the period ended Mar 31, 2026. Filed Apr 29, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed Apr 29, 2026

BIIB$248.35+1.8%Stored close · as of Nov 6, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Other Information

ITEM 5. OTHER INFORMATION

TRADING ARRANGEMENTS

From time to time, our officers (as defined in Rule 16a-1(f)) and directors may enter into, amend or terminate Rule 10b5-1 ornon-Rule 10b5-1 trading arrangements (as each such term is defined in Item 408 of Regulation S-K). During the first quarter of 2026 there were no trading arrangements for the purchase or sale of our securities entered into, amended or terminated by our officers and directors.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.