Summary
Updated Aug 31, 2026
Andrea Pfeifer is Chief Executive Officer, Director of AC Immune SA (ACIU). 2 SEC Form 4 filings on record, most recently on 18 May 2026. Most recent open-market trade: sold $28K of ACIU on 18 May 2026. Lifetime open-market purchases: $31K. Lifetime open-market sales: $28K.
Recent Transactions
2Every recent SEC Form 4 transaction Andrea Pfeifer has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Andrea Pfeifer go back to 2026: 2 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $31K (1 buy totaling $31K). The largest single buy on record is $31K of ACIU in 2026. Sales side: 1 recorded sale totaling $28K, so the filing history runs buy-heavy by dollar value. 2 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
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Andrea Pfeifer has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
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Frequently Asked Questions
Who is Andrea Pfeifer?
Andrea Pfeifer is a corporate insider, tracked as Chief Executive Officer, Director of AC Immune SA (ACIU). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Andrea Pfeifer last file a Form 4?
The most recent primary Form 4 on record is dated 18 May 2026, one of 2 filings going back to 2026.
Has Andrea Pfeifer been buying or selling stock?
Recorded transactions: 1 open-market purchase ($31K) and 1 open-market sale ($28K) across all tracked filings.
Where can I see all of Andrea Pfeifer's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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