REG - Lansdowne Oil & Gas - Update on Energy Charter Treaty Arbitration Claim

Lansdowne Oil & GasAnnouncement

11/05/2026 07:00

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RNS Number : 7624D  Lansdowne Oil & Gas plc  11 May 2026

The information contained within this announcement is deemed by the Company to
constitute inside information as stipulated under the retained EU law version
of the Market Abuse Regulations (EU) No. 596/2014 . Upon the publication of
this announcement via Regulatory Information Service, this inside information
is now considered to be in the public domain. If you have any queries on
this, then please contact Steve Boldy, the Chief Executive Officer of the
Company (responsible for arranging release of this announcement).

 

11 May 2026

Lansdowne Oil & Gas plc

("Lansdowne" or the "Company")

 

 Update on Energy Charter Treaty ("ECT") Arbitration Claim

 

Lansdowne Oil & Gas is pleased to announce that, following the filing of a
Request For Arbitration ("RFA") regarding its dispute with Ireland regarding
the Barryroe oil and gas field, at the International Centre for Settlement of
Investment Disputes ("ICSID") in Washington, D.C., on the 8 May 2026 the
Company received written confirmation from ICSID that the ICSID
Secretary-General has registered the Request. Details of the Arbitration can
be found on the ICSID Website.

This is an important step in the arbitration process and will now be followed
by the appointment of a tribunal. Lansdowne will continue to vigorously assert
its rights under the Energy Charter Treaty ("ECT") in its dispute with
Ireland. As previously reported, the Company is pursuing a claim of a minimum
US$100 million plus interest.

On 27 April 2026 the ECT Secretariat announced that it had received
notification of Ireland's withdrawal from the Treaty. It further noted that
this will become effective one year after its notification to the Secretariat
- from 28 April 2027. It also noted that Ireland will continue to be bound by
the 20-year sunset clause. Accordingly, Ireland's withdrawal from the ECT will
have no bearing on Lansdowne's case.

In June 2023 Lansdowne gave notice to Ireland that a dispute existed under the
ECT and the filing and registration of the RFA brings to a close the first
formal step in the arbitration process.

 

Stephen Boldy, CEO of Lansdowne commented:

"On behalf of Lansdowne and all our shareholders, I would like to thank the
legal teams from Diamond McCarthy and Mantle Law who have worked to produce
the RFA and we look forward to the next steps in the arbitration process in
our quest to seek just compensation for the loss of our Barryroe asset."

 

"It is expected that the Company will recommence trading on the AIM of the
London Stock Exchange on 27 May 2026, subject to shareholder approval of the
resolutions at the upcoming General Meeting on 26 May 2026."

 

For further information please contact:

 Lansdowne Oil & Gas plc
 Steve Boldy

 SP Angel Corporate Finance LLP      +44 (0) 20 3470 0470
 Nominated Adviser and Joint Broker
 Stuart Gledhill

 Tavira Financial Limited            +44 (0) 20 3192 1739
 Joint Broker
 Oliver Stansfield

 

 

Notes to editors:

 

About Lansdowne

Lansdowne Oil & Gas (LOGP.LN) is an oil and gas exploration and appraisal
company quoted on the AIM market that was previously focused on the North
Celtic Sea.

In May 2023 the application for a Lease Undertaking for the Barryroe oil and
gas field, in which Lansdowne held a 20% interest, was refused by the Irish
Department of the Environment, Climate and Communications.

In June 2023 Lansdowne announced the commencement of action under the
Arbitration Process of the Energy Charter Treaty.

On 20 September 2023 Lansdowne announced that, under AIM Rule 15, the Company
had been designated to be a cash shell. Accordingly, the shares of the Company
were suspended from trading on AIM as at 07.30am on 21 March 2024.

On 30 April 2026, Lansdowne announced the completion of a Reverse Take Over to
acquire Sao Gabriel Mining, who hold graphite assets in Brazil, accompanied by
a placing to raise £1.9 million before costs. This transaction is subject to
shareholder approval at the forthcoming AGM on 26 May 2026.

 

For more information on Lansdowne, please refer to www.lansdowneoilandgas.com
(http://www.lansdowneoilandgas.com) .

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