29 May 2026

TOMCO ENERGY PLC
("TomCo" or the "Company")

Appointment of Non-Executive Director and Grant of Share Options

TomCo (AIM: TOM), the US operating oil development group focused on using innovative technology to unlock unconventional hydrocarbon resources, is pleased to announce, further to the Company's announcement of 23 February 2026 and completion of the Company's Nominated Adviser's customary due diligence process, that Mr Steven Byle has been appointed as a Non-Executive Director of the Company with immediate effect. In addition, the Company has granted share options ("Options") over, in aggregate 605,463,529 ordinary shares of no par value each ("Ordinary Shares") in the capital of the Company as detailed further below.

Additional Information on Directorate Appointment

A brief profile on Steven Byle, a highly accomplished serial entrepreneur with substantial experience of innovative companies and technologies and international projects in the energy sector, was set out in the Company's announcement of 23 February 2026.

The following additional information, save for Steven's directorship of TomCo, is provided in accordance with AIM Rule 17 and paragraph (g) of Schedule Two of the AIM Rules for Companies:

Steven Mark Byle (aged 58)

Steven holds a 50 per cent. interest in Valkor LLC, which in turn holds 290,500,000 Ordinary Shares representing approximately 4.80 per cent. of the Company's existing issued ordinary share capital. In addition to such indirect interest in Ordinary Shares, Steven has been granted certain Options as detailed further below.

There is no further information to be disclosed in relation to Steven's appointment pursuant to AIM Rule 17 or Schedule Two (g) of the AIM Rules for Companies.

Grant of Share Options

The Company has today granted Options over, in aggregate, 605,463,529 Ordinary Shares, representing approximately 10 per cent. of the Company's existing issued ordinary share capital, to the Company's directors and to the widow of the Company's former Chief Executive Officer.

All such options are exercisable at a price of 0.028 pence each, being the closing mid-market price of an Ordinary Share on 28 May 2026 and vest immediately.

Further details of the Options over 484,370,823 Ordinary Shares which were granted to the Company's Directors are set out below:

In addition, a further 121,092,706 Options were granted to the widow of the late John Potter, the Company's former Chief Executive Officer.

Following the above grant of Options, the total number of options outstanding over unissued Ordinary Shares is 645,844,481, representing approximately 10.67 per cent. of the Company's existing issued ordinary share capital. The 52,714,285 options held by the late John Potter have now lapsed.

Enquiries:

For further information, please visit www.tomcoenergy.com.

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulation (EU) No. 596/2014 ("MAR") as it forms part of United Kingdom domestic law by virtue of the European Union (Withdrawal) Act 2018, as amended by virtue of the Market Abuse (Amendment) (EU Exit) Regulations 2019.

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PDMR Notification Form:

The notification below is made in accordance with the requirements of MAR.