ACIUNasdaqPharmaceutical PreparationsFiscal year ends December 31
AC Immune SA
Financials through fiscal 2025, year ended Dec 31, 2025Last filing: 20-F on Mar 13, 2026
$2.44+0.04 (+1.88%)
Close on Oct 19, 2026
Ownership
Who owns AC Immune's shares
Held by institutions
–
Shares held, 13F filers
Institutional holders
–
Net institutional buying
–
Insider trades, 12 months
1 buys · 2 sales
Net sold $27.90K
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Affiris AG in Liqu | 6,428,100 | 6.50% | 13G (passive) amendment | Dec 13, 2024 |
| BVF Inc. | 19,522,436 | 19.70% | 13G (passive) amendment | Sep 30, 2024 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Martin Zuegel | Interim CEO, Director | 71,408 | 0.07% | Jun 15, 2026 |
| Andrea Pfeifer | Chief Executive Officer, Director | 3,834,288 | 3.77% | May 18, 2026 |
| Piergiorgio Donati | Chief Operating Officer | 141,120 | 0.14% | Mar 20, 2026 |
| Christopher James Roberts | Chief Financial Officer | 155,382 | 0.15% | Mar 18, 2026 |
| Carl Howard June | Director | 67,556 | 0.07% | Jun 15, 2026 |
| Roy Ervin Twyman | Director | 92,556 | 0.09% | Jun 15, 2026 |
| Monika Buetler | Director | 71,656 | 0.07% | Jun 15, 2026 |
| Renee Aguiar-Lucander | Director | 51,136 | 0.05% | Jun 15, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Monika Buetler Director | Jun 11, 2026 | Award | +17,751 | – | – | 71,656 |
| Martin Zuegel Interim CEO, Director | Jun 11, 2026 | Award | +33,136 | – | – | 71,408 |
| Renee Aguiar-Lucander Director | Jun 11, 2026 | Award | +16,568 | – | – | 51,136 |
| Carl Howard June Director | Jun 11, 2026 | Award | +16,568 | – | – | 67,556 |
| Roy Ervin Twyman Director | Jun 11, 2026 | Award | +16,568 | – | – | 92,556 |
| Andrea Pfeifer Chief Executive Officer, Director | May 15, 2026 | Sale(10b5-1 plan) | −10,000 | $2.79 | $27.90K | 3,820,288 |
| Andrea Pfeifer Chief Executive Officer, Director | Apr 15, 2026 | Sale(10b5-1 plan) | −10,000 | $3.14 | $31.40K | 3,830,288 |
| Andrea Pfeifer Chief Executive Officer, Director | Apr 15, 2026 | Buy | −10,000 | $3.14 | $31.40K | 3,830,288 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| M.A Pfeifer Andrea Director, Officer | May 15, 2026 | 20,000 | $56.00K | May 15, 2026 | Previously Exercised Stock Options |
| M.A Pfeifer Andrea Officer | Apr 15, 2026 | 10,000 | $31.90K | Apr 15, 2026 | Previously Exercised Stock Options |
| M.A Pfeifer Andrea Officer | Jan 15, 2026 | 30,000 | $110.10K | Jan 15, 2026 | Previously Exercised Stock Options |
| M.A Pfeifer Andrea Officer | Oct 3, 2025 | 45,000 | $140.85K | Oct 3, 2025 | Previously Exercised Stock Options |
| M.A Pfeifer Andrea Officer | Sep 12, 2025 | 35,000 | $83.30K | Sep 12, 2025 | Previously Exercised Stock Options |
| M.A Pfeifer Andrea Officer | Jul 24, 2025 | 20,000 | $46.80K | Jul 24, 2025 | Previously Exercised Stock Options |
| M. A. Pfeifer Andrea Officer | Sep 27, 2024 | 40,000 | $148.00K | Sep 27, 2024 | Previously Exercised Stock Options |
| M. A. Pfeifer Andrea Officer | Sep 18, 2024 | 20,000 | $69.20K | Sep 18, 2024 | Previously Exercised Stock Options |
| AG in Liqu AFFIRIS 10% Stockholder | May 16, 2024 | 150,000 | $499.50K | May 16, 2024 | Merger/acquisition |
| Pfeifer Andrea Officer | Dec 28, 2023 | 94,000 | $467.18K | Dec 28, 2023 | Ex Opt C comm shs |
| Pfeifer Andrea Officer | Dec 15, 2023 | 95,000 | $352.45K | Dec 15, 2023 | Series B Pref. shares |
| Pfeifer Andrea Officer | Dec 11, 2023 | 20,000 | $73.80K | Dec 11, 2023 | Series B Pref. shares |
| Pfeifer Andrea Officer | Dec 6, 2023 | 20,000 | $70.00K | Dec 6, 2023 | Series B Pref. shares |
| Pfeifer Andrea Officer | Aug 22, 2023 | 16,990 | $52.33K | Aug 22, 2023 | Series B Pref. shares |
| Pfeifer Andrea Officer | Aug 21, 2023 | 1,509 | $4.60K | Aug 21, 2023 | Series B Pref. shares |