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): May 4, 2023

Esperion Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

Delaware	001-35986	26-1870780
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

3891 Ranchero Drive, Suite 150

Ann Arbor, MI

(Address of principal executive offices)

48108

(Zip Code)

Registrant’s telephone number, including area code: (734) 887-3903

Not Applicable

Former name or former address, if changed since last report

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:

☐ 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))

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

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

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company   ☐

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 8.01. Other Events.

On May 4, 2023, Esperion Therapeutics, Inc. (the “Company”) filed an amended complaint against Daiichi Sankyo Europe GmbH (“DSE”) in the Southern District of New York. The complaint seeks a judicial declaration, on an expedited basis, that DSE is contractually required to make a $300 million milestone payment to Esperion.

The foregoing summary of the complaint is qualified in its entirety by reference to the full text of the complaint, a copy of which is filed with this Current Report on Form 8-K as Exhibit 99.1 and is incorporated herein by reference.

On May 4, 2023, the Company issued a press release announcing the filing of the amended complaint. A copy of the press release is attached hereto as Exhibit 99.2.

Item 9.01. Financial Statements and Exhibits.

Exhibit No.	Description
99.1	First Amended Complaint in Esperion Therapeutics, Inc. v. Daiichi Sankyo Europe GmbH, Case No. 1:23-cv-02568-ER
99.2	Press Release dated May 4, 2023
104	The cover page from this Current Report on Form 8-K, formatted in Inline XBRL.

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.

Date: May 4, 2023	Esperion Therapeutics, Inc.
	By:	/s/ Sheldon L. Koenig
		Sheldon L. Koenig
		President and Chief Executive Officer