SEC Form 4 · Updated Daily
ACIU
— AC Immune Ltd OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Pfeifer Andrea | Director · Officer | 3,820,288 | 2026-05-15 | S |
| Twyman Roy Ervin | Director | 92,556 | 2026-06-11 | A |
| Buetler Monika | Director | 71,656 | 2026-06-11 | A |
| Zuegel Martin | Director · Officer | 71,408 | 2026-06-11 | A |
| June Carl Howard | Director | 67,556 | 2026-06-11 | A |
| AGUIAR-LUCANDER RENEE | Director | 51,136 | 2026-06-11 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-06-11 | June Carl Howard | Grant / award (derivative) | 38,889 | $0.00 | 38,889 |
| 2026-06-11 | June Carl Howard | Grant / award | 16,568 | $0.00 | 67,556 |
| 2026-06-11 | Buetler Monika | Grant / award (derivative) | 41,667 | $0.00 | 41,667 |
| 2026-06-11 | Buetler Monika | Grant / award | 17,751 | $0.00 | 71,656 |
| 2026-06-11 | Zuegel Martin | Grant / award (derivative) | 77,778 | $0.00 | 77,778 |
| 2026-06-11 | Zuegel Martin | Grant / award | 33,136 | $0.00 | 71,408 |
| 2026-06-11 | AGUIAR-LUCANDER RENEE | Grant / award (derivative) | 38,889 | $0.00 | 38,889 |
| 2026-06-11 | AGUIAR-LUCANDER RENEE | Grant / award | 16,568 | $0.00 | 51,136 |
| 2026-06-11 | Twyman Roy Ervin | Grant / award (derivative) | 38,889 | $0.00 | 38,889 |
| 2026-06-11 | Twyman Roy Ervin | Grant / award | 16,568 | $0.00 | 92,556 |
| 2026-05-15 | Pfeifer Andrea | Open-market sale | 10,000 | $2.79 | 3,820,288 |
| 2026-04-15 | Pfeifer Andrea | Open-market buy | 10,000 | $3.14 | 3,830,288 |
| 2026-04-15 | Pfeifer Andrea | Open-market sale | 10,000 | $3.14 | 3,830,288 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.