SC 13G/A: AC Immune SA

AI Summary

SC 13G/A filing by AC Immune SA.

Risk Assessment

Risk Level: low

Filing Documents

• y1211240sc13ga3.htm (SC 13G/A) — 36KB
• 0001214659-24-020510.txt ( ) — 38KB

If this statement is filed pursuant to §§240.13d–1(b)

Item 3. If this statement is filed pursuant to §§240.13d–1(b) or 240.13d–2(b) or (c), check whether the person filing is a: Not applicable.

Ownership

Item 4. Ownership Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned: 6,428,100 shares (b) Percent of class: See line 11 of the cover sheet. The percentage set forth is based on 98,940,288 shares of the issuer that were reported as outstanding as of August 6, 2024 in a prospectus supplement filed by the issuer. 3 (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: See line 5 of the cover sheet. (ii) Shared power to vote or to direct the vote: See line 6 of the cover sheet. (iii) Sole power to dispose or to direct the disposition of: See line 7 of the cover sheet. (iv) Shared power to dispose or to direct the disposition of: See line 8 of the cover sheet.

Ownership of 5 Percent or Less of a Class

Item 5. Ownership of 5 Percent or Less of a Class. Not applicable.

Ownership of More than 5 Percent on Behalf of Another

Item 6. Ownership of More than 5 Percent on Behalf of Another Person. Not applicable.

Identification and Classification of the Subsidiary

Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. Not applicable.

Identification and Classification of Members of the Group

Item 8. Identification and Classification of Members of the Group Not applicable.

Notice of Dissolution of Group

Item 9. Notice of Dissolution of Group. Not applicable.

Certifications

Item 10. Certifications By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. 4

SIGNATURES

SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: December 13, 2024 AFFIRIS AG in Liqu By: /s/ Claus Schalper Name: Claus Schalper Title: Chief Executive Officer 5

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