Holding(s) in Company

1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attachedⁱⁱ:

Tialis Essential IT PLC

ISIN: GB00BN4M3M55

1b. Please indicate if the issuer is a non-UK issuer (please mark with an "X" if appropriate)

Non-UK issuer

2. Reason for the notification (please mark the appropriate box or boxes with an "X")

An acquisition or disposal of voting rights

X

An acquisition or disposal of financial instruments

An event changing the breakdown of voting rights

Other (please specify):

3. Details of person subject to the notification obligation^iv

Name

Andrew Ian Smith

City and country of registered office (if applicable)

4. Full name of shareholder(s) (if different from 3.)^v

Name

City and country of registered office (if applicable)

5. Date on which the threshold was crossed or reached^vi:

12 March 2026

6. Date on which issuer notified:

20 March 2026

7. Total positions of person(s) subject to the notification obligation

% of voting rights attached to shares (total of 8. A)

% of voting rights through financial instruments
(total of 8.B 1 + 8.B 2)

Total of both in % (8.A + 8.B)

Total number of voting rights of issuer^vii

Resulting situation on the date on which threshold was crossed or reached

13.02%

13.02%

39,909,832

Position of previous notification (if

applicable)

1.70% 

1.70%

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached^viii

A: Voting rights attached to shares

Class/type of
shares

ISIN code (if possible)

Number of voting rights^ix

% of voting rights

Direct

(Art 9 of Directive 2004/109/EC) (DTR5.1)

Indirect

(Art 10 of Directive 2004/109/EC) (DTR5.2.1)

Direct

(Art 9 of Directive 2004/109/EC) (DTR5.1)

Indirect

(Art 10 of Directive 2004/109/EC) (DTR5.2.1)

Ordinary Shares of 1p each

ISIN GB00BN4M3M55

5,198,083

N/A

13.02%

N/A

SUBTOTAL 8. A

5,198,083

13.02%

B 1: Financial Instruments according to Art. 13(1)(a) of Directive 2004/109/EC (DTR5.3.1.1 (a))

Type of financial instrument

Expiration
date^x

Exercise/
Conversion Period^xi

Number of voting rights that may be acquired if the instrument is

exercised/converted.

% of voting rights

SUBTOTAL 8. B 1

B 2: Financial Instruments with similar economic effect according to Art. 13(1)(b) of Directive 2004/109/EC (DTR5.3.1.1 (b))

Type of financial instrument

Expiration
date^x

Exercise/
Conversion Period ^xi

Physical or cash

settlement^xii

Number of voting rights

% of voting rights

SUBTOTAL 8.B.2

9. Information in relation to the person subject to the notification obligation (please mark the

applicable box with an "X")

Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer^xiii

X

Full chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held starting with the ultimate controlling natural person or legal entity^xiv (please add additional rows as necessary)

Name^xv

% of voting rights if it equals or is higher than the notifiable threshold

% of voting rights through financial instruments if it equals or is higher than the notifiable threshold

Total of both if it equals or is higher than the notifiable threshold

Andrew Ian Smith in SIPP

2.49%

2.49%

Huntress (CI) Nominees Limited

10.53%

 10.53%

10. In case of proxy voting, please identify:

Name of the proxy holder

N/A

The number and % of voting rights held

N/A

The date until which the voting rights will be held

N/A

11. Additional information^xvi

Mr Smith was the former Chief Executive Officer of Tialis Essential IT Plc and major shareholder of MXC Capital Limited ("MXC") prior to the liquidation of MXC in March 2026. MXC's holding in the Company was 26,722,891 Ordinary Shares which represented 67.0% of the Company's issued ordinary share capital. Mr Smith and MXC held in aggregate 27,401,057 Ordinary Shares, which represented 68.7% of the Company's issued ordinary share capital.

Place of completion

Guernsey

Date of completion

20 March 2026