UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

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 15, 2025

SENSEONICS HOLDINGS, INC.

(Exact Name of Registrant as Specified in its Charter)

Delaware		001-37717		47-1210911
(State or Other Jurisdiction of Incorporation)		(Commission File Number)		(IRS Employer Identification No.)

20451 Seneca Meadows Parkway
Germantown, MD 20876-7005

(Address of Principal Executive Office) (Zip Code)

Registrant's telephone number, including area code: (301) 515-7260

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 (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))

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock	SENS	NYSE American

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).

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. ¨

EXPLANATORY NOTE

This Amendment No. 1 to the Current Report on Form 8-K of Senseonics Holdings, Inc. (the “Company”) amends the Company’s Current Report on Form 8-K, which was filed with the Securities and Exchange Commission on May 16, 2025 (the “Original Report”), to amend and restate in its entirety Exhibit 5.1 and Exhibit 23.1 filed with the Original Report with an updated Exhibit 5.1 and Exhibit 23.1 filed herewith. Other than as described above, this amendment does not amend any other information previously filed in the Original Report.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.		Description
5.1		Opinion of Cooley LLP
23.1		Consent of Cooley LLP (included in Exhibit 5.1)
104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

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

	Senseonics Holdings, Inc.

Date: May 19, 2025	By:	/s/ Rick Sullivan
		Rick Sullivan Chief Financial Officer