Andrea Pfeifer

CIK: 0001697107

Transaction Breakdown

Open Market Buys (P)1 (33.3%)

High conviction signal

Open Market Sales (S)2 (66.7%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

ACIU

AC Immune SA

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (3 total)

ACIU
AC Immune SA
May 15, 2026
Sale(S)
Direct
10K shares at avg. $2.79$28K
ACIU
AC Immune SA
Apr 15, 2026
Sale(S)
Direct
10K shares at avg. $3.14$31K
ACIU
AC Immune SA
Apr 15, 2026
Purchase(P)
Direct
10K shares at avg. $3.14$31K

		Type	Shares	Price		Ownership
May 15, 2026	ACIU AC Immune SA	Sale(S)	10,000	$2.79	$27,935	Direct
Apr 15, 2026	ACIU AC Immune SA	Sale(S)	10,000	$3.14	$31,425	Direct
Apr 15, 2026	ACIU AC Immune SA	Purchase(P)	10,000	$3.14	$31,425	Direct

1-3 of 3 transactions

About Pfeifer Andrea

Pfeifer Andrea (SEC CIK 0001697107) files insider reports with the SEC as Chief Executive Officer of AC Immune SA (ACIU).

Signal8 holds 4 ownership filings by Pfeifer Andrea (1 Form 3, 3 Form 4), filed between Mar 18, 2026 and May 18, 2026. Those filings report 3 transactions, from Apr 15, 2026 to May 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Pfeifer Andrea's filings is in LAUSANNE.

Recent filings by Pfeifer Andrea

May 15, 2026: Open-market sale of ACIU shares (Form 4, code S).
Apr 15, 2026: Open-market sale of ACIU shares (Form 4, code S).
Apr 15, 2026: Open-market purchase of ACIU shares (Form 4, code P).

Other insiders filing for AC Immune SA (ACIU)

Graney Thomas, Director
Twyman Roy Ervin, Director
AGUIAR-LUCANDER RENEE, Director
Zuegel Martin, Interim CEO
Buetler Monika, Director
June Carl Howard, Director

How to read Form 4 transaction codes