AC Immune SA (ACIU) Insider Ownership

Historic Insider Ownership Trends

AC Immune's three largest insider shareholders as of May 14, 2026 are Andrea Pfeifer (Chief Executive Officer, 3.83Mn shares).

A detailed ownership breakdown for AC Immune is not available at this time.
Insider shares in AC Immune do not amount to a significant value as of May 14, 2026.
AC Immune's count of insider shares amounted to 0 as of May 14, 2026.
There were no significant purchases by AC Immune's insiders in the last 90 days.
Conversely, Andrea Pfeifer (Chief Executive Officer) led selling activity at AC Immune, with 20.00K shares sold over the same period ending May 14, 2026.

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.

Holder	Position	Shares (Direct)	Shares (Indirect)	Report Date
Andrea Pfeifer	Chief Executive Officer	3,830,288	0	16 Apr, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.

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Transaction Date	Insider Name	Security Class	Transaction Type	Shares Traded	Price	Shares Remaining	Ownership	Code
15 Apr, 2026	Andrea Pfeifer	Share	D	10,000	$3.14	3,830,288	D	P
15 Apr, 2026	Andrea Pfeifer	Share	D	10,000	$3.14	3,830,288	D	S

Research Tools

AC Immune SA (ACIU) Insider Ownership

Historic Insider Ownership Trends

Top Direct Holders

Recent Insider Transactions

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