NASDAQ:ACIU

Ac Immune Sa Stock Insider Trading

Healthcare > Biotechnology

Buy ACIU

*Your capital is at risk

$2.39

-0.0300 (-1.24%)

At Close: Jun 03, 2026

AC Immune SA Stock Insider Power

Based on the 56 latest insides trades, we have calculated the insider power to be positive at 96.28. In total, the insiders bought 2.84M and sold 20K ACIU shares in the last 56 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 56 transactions)	96.28
● Buy	2.84M shares
● Sell	20K shares
96% Buy Activity Negligible or No Correlation
No Significant Signals No statistically significant buy or sell signals detected in recent insider data.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 15, 2026 Sell	Common Share S-Sale	Pfeifer Andrea Chief Executive Officer	CEO / President	10 000 Value: $27.9K
Apr 15, 2026 Buy	Share P-Purchase	Pfeifer Andrea Chief Executive Officer	CEO / President	10 000 Value: $31.4K
Apr 15, 2026 Sell	Share S-Sale	Pfeifer Andrea Chief Executive Officer	CEO / President	10 000 Value: $31.4K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	89 552 Value: $271.3K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	61 538 Value: $179.1K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	27 607 Value: $110.2K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	66 667 Value: $135.3K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	22 050 Value: $69.5K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	28 463 Value: $205.8K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	34 562 Value: $240.2K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	41 322 Value: $222.7K
Mar 20, 2026 Buy	Share Option (right to buy)	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	7 200 Value: $68.4K
Mar 20, 2026 Buy	Common Shares	Donati Piergiorgio Chief Operating Officer	C-Suite Officer	0 Value: $0
Mar 18, 2026 Buy	Share Option (right to buy)	Zuegel Martin Director	Director	32 061 Value: $59.0K
Mar 18, 2026 Buy	Common Shares	Zuegel Martin Director	Director	0 Value: $0
Mar 18, 2026 Buy	Common Shares	Twyman Roy Ervin Director	Director	0 Value: $0
Mar 18, 2026 Buy	Share Option (right to buy)	Twyman Roy Ervin Director	Director	36 932 Value: $199.1K
Mar 18, 2026 Buy	Share Option (right to buy)	Twyman Roy Ervin Director	Director	15 714 Value: $109.2K
Mar 18, 2026 Buy	Share Option (right to buy)	Twyman Roy Ervin Director	Director	12 865 Value: $93.0K
Mar 18, 2026 Buy	Share Option (right to buy)	Twyman Roy Ervin Director	Director	23 204 Value: $73.1K
Mar 18, 2026 Buy	Share Option (right to buy)	Twyman Roy Ervin Director	Director	37 168 Value: $79.9K
Mar 18, 2026 Buy	Share Option (right to buy)	Twyman Roy Ervin Director	Director	14 094 Value: $59.6K
Mar 18, 2026 Buy	Share Option (right to buy)	Twyman Roy Ervin Director	Director	43 299 Value: $79.7K
Mar 18, 2026 Buy	Common Shares	Aguiar-lucander Renee Director	Director	0 Value: $0
Mar 18, 2026 Buy	Share Option (right to buy)	Aguiar-lucander Renee Director	Director	32 061 Value: $59.0K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks