UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of April 2026
Commission file number: 001-37891
AC IMMUNE SA
(Exact Name of Registrant as Specified in Its Charter)
EPFL Innovation Park
Building B
1015 Lausanne, Switzerland
(Address of Principal Executive Offices)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
| Form 20-F | ☒ | Form 40-F | ☐ |
On April 30, 2026, AC Immune SA issued a press release announcing that it initiated the final cohort in the ongoing Phase 1b/2 ABATE trial of anti-Abeta active immunotherapy to treat Alzheimer’s disease. A copy of the press release is attached as Exhibit 99.1 to this Report on Form 6-K.
EXHIBIT INDEX
| Exhibit Number |
Description | |
| 99.1 | Press Release dated April 30, 2026 |
SIGNATURE
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, thereunto duly authorized.
| AC IMMUNE SA | ||
| By: | /s/ Andrea Pfeifer | |
| Name: Andrea Pfeifer | ||
| Title: Chief Executive Officer | ||
| By: | /s/ Christopher Roberts | |
| Name: Christopher Roberts | ||
| Title: Chief Financial Officer | ||
Date: April 30, 2026
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