Block Admission Return

Name of applicant:

Kistos Holdings plc

Name of scheme:

Block Listing relating to the exercise of options under the Company's 2021 Employee Incentive Plan and 2025 Long-Term Incentive Plan

Period of return:

From:

21 October 2025

To:

12 May 2026

Balance of unallotted securities under scheme(s) from previous return:

2,000,000

Plus:  The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less:  Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

424,997

Equals:  Balance under scheme(s) not yet issued/allotted at end of period:

1,575,003

Kistos Holdings plc

Andrew Austin

via Hawthorn Advisors

Panmure Liberum (NOMAD, Joint Broker)

Amrit Mahbubani / Freddie Wooding / Mark Murphy / Sam Elder

Tel: 0207 886 2500

Berenberg (Joint Broker)

Matthew Armitt / Ciaran Walsh

Tel: 0203 207 7800

Hawthorn Advisors (Public Relations Advisor)

Henry Lerwill / Simon Woods

Tel: 0203 745 4960

Camarco (Public Relations Advisor)

Billy Clegg

Tel: 0203 757 4983