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 8, 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 ...