Pfeifer Andrea 4

What Happened
Andrea Pfeifer, CEO of AC Immune SA, reported an open-market purchase of 10,000 common shares on April 15, 2026. The shares were acquired at a weighted average price of $3.14 per share for a total of approximately $31,425. This filing shows a straightforward purchase (transaction code P).

Key Details

• Transaction date: 2026-04-15; filed with the SEC on 2026-04-16 (timely filing).
• Price: Weighted average $3.14; purchases executed in multiple trades at prices ranging $3.05–$3.19 (Footnote F2).
• Shares acquired: 10,000; total value ≈ $31,425.
• Ownership note: Filing includes a disclosure that 1,921,005 common shares underlying outstanding restricted share units are included in the beneficial ownership count (Footnote F1).
• No 10b5-1 plan, tax-withholding sale, or option exercise was indicated in this filing.

Context
This was an open-market purchase, not an exercise or a gift. Purchases by executives are often watched by retail investors because they signal the insider added to their stake; filings like this are factual records of trading activity and do not state the insider’s motive. The weighted-average price and price range indicate the buy was completed through multiple trades on the same date.