supn-20260128

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 28, 2026

Supernus Pharmaceuticals, Inc.

(Exact name of registrant as specified in its charter)


Delaware	001-35518		20-2590184
(State or other jurisdiction of incorporation or organization)	(Commission File Number)		(I.R.S. Employer Identification No.)

9715 Key West Ave	Rockville	MD	20850
(Address of Principal Executive Offices)			(Zip Code)

Registrant’s telephone number, including area code: (301) 838-2500

Not Applicable

(Former name or former address, if changed since last report.)

Securities registered pursuant to Section 12(b) of the Exchange Act


Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, $0.001 par value per share	SUPN	The Nasdaq Stock Market LLC

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Material Definitive Agreement.

On January 22, 2026, Supernus Pharmaceuticals, Inc. (the “Company”) entered into a First Amendment (the “Amendment”) to the Agreement and Plan of Merger dated September 12, 2018 (the “Merger Agreement”), with Reich Consulting Group, Inc. as the Securityholder Representative.

The Amendment relates to the timing and payment of certain milestones under the Merger Agreement.

The foregoing description is qualified in its entirety by reference to the full text of the Amendment, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits


Exhibit			Description

10.1*			First Amendment to Agreement and Plan of Merger, dated as of January 22, 2026, by and among Supernus Pharmaceuticals, Inc. and Reich Consulting Group, Inc.
104			The cover page from this Current Report on Form 8-K, formatted in Inline XBRL.

*Certain portions of this exhibit that constitute confidential information have been omitted in accordance with Regulation S-K, Item 601(b)(10)(iv) because it (i) is not material and (ii) would be competitively harmful if publicly disclosed

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


	SUPERNUS PHARMACEUTICALS, INC.

DATED: January 28, 2026	By:	/s/ Timothy C. Dec
		Timothy C. Dec Senior Vice President and Chief Financial Officer

Supernus Pharmaceuticals Inc. filed SEC Form 8-K: Entry into a Material Definitive Agreement, Financial Statements and Exhibits