PFEIFER ANDREA enters AC IMMUNE SA with 3.85M shares plus derivative instruments

Holding both equity and derivatives at entry signals strong long-term conviction in the company.

Direct Indirect Derivatives

PFEIFER ANDREA

Filed: 3/18/2026ACC: 0000950103-26-004151

InsiderPFEIFER ANDREACIK 1697107

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IssuerAC IMMUNE SACIK 1651625

DirectorOfficer· Chief Executive Officer

Since Mar 2026

3.85M

Baseline shares

100% direct

3.84M

Direct ownership

1 position

1.58M

Derivative underlying

7 instruments

Security positions

14K indirect

Non-Derivative Holdings2

Common Shares

Indirect

Shares owned14K

Common Shares

Direct

Shares owned3.84M

Total

3.84M direct·14K indirect3.85M

Security Title	Shares Owned	Ownership Type
Common Shares	14K	Indirect
Common Shares	3.84M	Direct
Total	3.85M	3.84M direct·14K indirect

Derivative Holdings7

Share Option (right to buy)

Direct

Underlying security

Common Shares

Underlying shares

132.07K

Shares owned

N/A

Exercise price

8.51

Expiration

—

Exercise window

—

Share Option (right to buy)

Direct

Underlying security

Common Shares

Underlying shares

132.84K

Shares owned

N/A

Exercise price

5.39

Expiration

—

Exercise window

—

Share Option (right to buy)

Direct

Underlying security

Common Shares

Underlying shares

172.50K

Shares owned

N/A

Exercise price

3.15

Expiration

—

Exercise window

—

Share Option (right to buy)

Direct

Underlying security

Common Shares

Underlying shares

102.81K

Shares owned

N/A

Exercise price

9.53

Expiration

—

Exercise window

—

Share Option (right to buy)

Direct

Underlying security

Common Shares

Underlying shares

644.44K

Shares owned

N/A

Exercise price

2.03

Expiration

—

Exercise window

—

Share Option (right to buy)

Direct

Underlying security

Common Shares

Underlying shares

174.25K

Shares owned

N/A

Exercise price

6.95

Expiration

—

Exercise window

—

Share Option (right to buy)

Direct

Underlying security

Common Shares

Underlying shares

218.22K

Shares owned

N/A

Exercise price

7.23

Expiration

—

Exercise window

—

Total

Underlying

1.58M

Owned

0.00

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Share Option (right to buy) Direct	Common Shares	8.51	—	—	132.07K	N/A
Share Option (right to buy) Direct	Common Shares	5.39	—	—	132.84K	N/A
Share Option (right to buy) Direct	Common Shares	3.15	—	—	172.50K	N/A
Share Option (right to buy) Direct	Common Shares	9.53	—	—	102.81K	N/A
Share Option (right to buy) Direct	Common Shares	2.03	—	—	644.44K	N/A
Share Option (right to buy) Direct	Common Shares	6.95	—	—	174.25K	N/A
Share Option (right to buy) Direct	Common Shares	7.23	—	—	218.22K	N/A
Total					1.58M	0.00