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SUPERNUS PHARMACEUTICALS, INC.

For the period ended Mar 31, 2026. Filed May 5, 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 May 5, 2026

SUPN$27.62+5.6%Stored close · as of Nov 9, 2026

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

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Item 5. Other Information

(a)None.

(b)None.

(c)Insider Trading Arrangements and Policies.

The table below lists the insider trading arrangements adopted or terminated during the first quarter of 2026:

Name and Title of Director or OfficerRule 10b5-1 Trading Arrangement(1)Trading Arrangement Adopted or TerminatedDate of Adoption or TerminationDuration of Trading ArrangementAggregate Number of Securities to be Purchased Pursuant to Trading ArrangementAggregate Number of Securities to be Sold Pursuant to Trading Arrangement
William Todd HorichSenior Vice President, Chief Commercial OfficerYesAdoptedMarch 13, 2026First Transaction Date through March 12, 2027—44,000
William Todd HorichSenior Vice President, Marketing & Market Access(2)YesTerminatedFebruary 5, 2026First Transaction Date through December 15, 2026—16,875

(1) Indicates whether the trading arrangement is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

(2) Mr. Horich was appointed to Senior Vice President and Chief Commercial Officer in March 2026. The termination of his 10b5-1plan in February 2026 preceded his appointment to his current position.

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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.