Quantum Data Regulatory News (MAST)

Pieter Krügel

info@med.energy

Mast Energy

Developments PLC

CEO

Jon Belliss

+44 (0)20 7399 9425

Novum Securities

Corporate Broker

Guy Wheatley, CFA

+44 (0)74 9398 9014

Fortified Securities

Corporate Broker

  1.

Details of the person discharging managerial responsibilities/person closely associated

a)

Name:

Paulus Fillippus Venter

 2.

Reason for the notification

a)

Position/status:

Non-executive Director

b)

Initial notification/Amendment:

Initial

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name:

Mast Energy Developments PLC

b)

LEI:

213800HFVHGJ9YGO9F71

 4.

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument,

 type of instrument:

Identification code

Ordinary Shares of £0.001 each

GB00BNG90H86/ MAST

b)

Nature of the transaction:

Acquisition of securities in repayment of director loan

c)

Price(s) and volume(s):

d)

Aggregated information:

· Aggregated volume:

· Price:

N/A

e)

Date of the transaction:

11 July 2025

f)

Place of the transaction:

London Stock Exchange

  1.

Details of the person discharging managerial responsibilities/person closely associated

a)

Name:

Paulus Fillippus Venter

 2.

Reason for the notification

a)

Position/status:

Non-executive Director

b)

Initial notification/Amendment:

Initial

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name:

Mast Energy Developments PLC

b)

LEI:

213800HFVHGJ9YGO9F71

 4.

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument,

 type of instrument:

Identification code

Options awarded under Share Option Plan to acquire Ordinary Shares of £0.001 each in Mast Energy Developments PLC

No of share Options:1,089,965

Strike Price: £0.1

Conditions:25% vest on grant, 25% after 6 months and 50% after 12 months subject to standstill period where no exercise permitted for 6 months from 11 July 2025

b)

Nature of the transaction:

Company Share Option Plan award

c)

Price(s) and volume(s):

d)

Aggregated information:

· Aggregated volume:

· Price:

1,089,965

£0.1

e)

Date of the transaction:

11 July 2025

f)

Place of the transaction:

Outside of Trading Venue

  1.

Details of the person discharging managerial responsibilities/person closely associated

a)

Name:

Pieter-Schalk Krügel

 2.

Reason for the notification

a)

Position/status:

Executive Director

b)

Initial notification/Amendment:

Initial

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name:

Mast Energy Developments PLC

b)

LEI:

213800HFVHGJ9YGO9F71

 4.

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument,

 type of instrument:

Identification code

Options awarded under Share Option Plan to acquire Ordinary Shares of £0.001 each in Mast Energy Developments PLC

No of share Options:10,899,645

Strike Price: £0.1

Conditions:25% vest on grant, 25% after 6 months and 50% after 12 months subject to standstill period where no exercise permitted for 6 months from 11 July 2025.

b)

Nature of the transaction:

Company Share Option Plan award

c)

Price(s) and volume(s):

d)

Aggregated information:

· Aggregated volume:

· Price:

10,899,645

£0.1

e)

Date of the transaction:

11 July 2025

f)

Place of the transaction:

Outside of Trading Venue

  1.

Details of the person discharging managerial responsibilities/person closely associated

a)

Name:

Ivan Leonard Wentzel

 2.

Reason for the notification

a)

Position/status:

Head of Operations

b)

Initial notification/Amendment:

Initial

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name:

Mast Energy Developments PLC

b)

LEI:

213800HFVHGJ9YGO9F71

 4.

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument,

 type of instrument:

Identification code

Options awarded under Share Option Plan to acquire Ordinary Shares of £0.001 each in Mast Energy Developments PLC

No of share Options:1,089,965

Strike Price: £0.1

Conditions:25% vest on grant, 25% after 6 months and 50% after 12 months subject to standstill period where no exercise permitted for 6 months from 11 July 2025

b)

Nature of the transaction:

Company Share Option Plan award

c)

Price(s) and volume(s):

d)

Aggregated information:

· Aggregated volume:

· Price:

1,089,965

£0.1

e)

Date of the transaction:

11 July 2025

f)

Place of the transaction:

Outside of Trading Venue

  1.

Details of the person discharging managerial responsibilities/person closely associated

a)

Name:

Tanya Zwemstra

 2.

Reason for the notification

a)

Position/status:

Head of Finance

b)

Initial notification/Amendment:

Initial

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name:

Mast Energy Developments PLC

b)

LEI:

213800HFVHGJ9YGO9F71

 4.

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument,

 type of instrument:

Identification code

Options awarded under Share Option Plan to acquire Ordinary Shares of £0.001 each in Mast Energy Developments PLC

No of share Options:1,089,965

Strike Price: £0.1

Conditions:25% vest on grant, 25% after 6 months and 50% after 12 months subject to standstill period where no exercise permitted for 6 months from 11 July 2025

b)

Nature of the transaction:

Company Share Option Plan award

c)

Price(s) and volume(s):

d)

Aggregated information:

· Aggregated volume:

· Price:

1,089,965

£0.1

e)

Date of the transaction:

11 July 2025

f)

Place of the transaction:

Outside of Trading Venue

  1.

Details of the person discharging managerial responsibilities/person closely associated

a)

Name:

Noel O'Keeffe

 2.

Reason for the notification

a)

Position/status:

Company Secretary

b)

Initial notification/Amendment:

Initial

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name:

Mast Energy Developments PLC

b)

LEI:

213800HFVHGJ9YGO9F71

 4.

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument,

 type of instrument:

Identification code

Options awarded under Share Option Plan to acquire Ordinary Shares of £0.001 each in Mast Energy Developments PLC

No of share Options: 544,982

Strike Price: £0.1

Conditions:25% vest on grant, 25% after 6 months and 50% after 12 months subject to standstill period where no exercise permitted for 6 months from 11 July 2025

b)

Nature of the transaction:

Company Share Option Plan award

c)

Price(s) and volume(s):

d)

Aggregated information:

· Aggregated volume:

· Price:

544,982

£0.1

e)

Date of the transaction:

11 July 2025

f)

Place of the transaction:

Outside of Trading Venue