AC Immune S.A. (ACIU) Insider Trading
Over the last 3 months, ACIU insiders made 1 open-market buy and 2 sales, a net sale of -$28K (SEC Form 4). Over the last 6 months, 30 institutions increased and 28 reduced their position (13F).
Insider Activity
Sentiment
35/100
Buys (3m)
1
Sells (3m)
2
Net (3m)
-$27.9K
Insiders buying
Insider trades by month Buys Sells
Apr
May
Context3-month price -13.5%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 15, 2026 | June Carl Howarddirector | Grant | 38,889 | $2.62 |
| Jun 15, 2026 | Buetler Monikadirector | Grant | 17,751 | — |
| Jun 15, 2026 | Buetler Monikadirector | Grant | 41,667 | $2.62 |
| Jun 15, 2026 | June Carl Howarddirector | Grant | 16,568 | — |
| Jun 15, 2026 | Twyman Roy Ervindirector | Grant | 16,568 | — |
| Jun 15, 2026 | Twyman Roy Ervindirector | Grant | 38,889 | $2.62 |
| Jun 15, 2026 | AGUIAR-LUCANDER RENEEdirector | Grant | 16,568 | — |
| Jun 15, 2026 | AGUIAR-LUCANDER RENEEdirector | Grant | 38,889 | $2.62 |
| Jun 15, 2026 | Zuegel Martindirector, officer: Interim CEO | Grant | 33,136 | — |
| Jun 15, 2026 | Zuegel Martindirector, officer: Interim CEO | Grant | 77,778 | $2.62 |
| May 18, 2026 | Pfeifer Andreadirector, officer: Chief Executive Officer | Sell | 10,000 | $2.79 |
| Apr 16, 2026 | Pfeifer Andreadirector, officer: Chief Executive Officer | Buy | 10,000 | $3.14 |
| Apr 16, 2026 | Pfeifer Andreadirector, officer: Chief Executive Officer | Sell | 10,000 | $3.14 |
Source: ACIU SEC Form 4 filings, latest Jun 15, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their ACIU positions over the last 6 months (SEC Form 13F).
Increased
30
New positions
15
Reduced
28
Sold out
10
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BVF INC/IL | Unchanged | 19.8M | Feb 17, 2026 |
| BVF INC/IL | Unchanged | 19.8M | May 15, 2026 |
| WELLS FARGO & COMPANY/MN | Reduced | 1.0M | Feb 13, 2026 |
| WELLS FARGO & COMPANY/MN | Reduced | 1.0M | May 11, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 933K | Feb 17, 2026 |
| MILLENNIUM MANAGEMENT LLC | Reduced | 793K | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 669K | Feb 12, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 624K | May 14, 2026 |
| BLACKROCK, INC. | Increased | 524K | May 13, 2026 |
| BLACKROCK, INC. | Increased | 502K | Feb 12, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 465K | Feb 10, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 406K | May 14, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 390K | May 7, 2026 |
| POINT72 ASSET MANAGEMENT, L.P. | New Position | 385K | Feb 17, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New Position | 376K | Feb 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.