Sterling Digital PLC - Contract for Mining Site & Coinbase Account

2 June 2026

Sterling Digital plc

("Sterling" or the "Company")

Contract for Development of Mining Site

Initiation of Coinbase Account

Sterling Digital plc (AQSE: ASIC), a company established to develop low-energy-cost digital asset mining operations in the United States, provides the following update with respect to the development of its mining site.

On 1 June 2026, the Company entered into a contract with Terra Solis Mining LLC ("Terra Solis"), for the pending commissioning and installation support of the Company's first gas to energy site.  Terra Solis, based in Texas, specialises in installing and running industrial scale sites that convert natural gas to energy in line with the Company's business plan.

Under the terms of the agreement, Terra Solis will establish the Company's phase 1 infrastructure and has been commission for the work at a materially lower cost than competitors.

As announced previously, the Company's development plan is progressing as anticipated.

Initiation of Coinbase Custodian Account

The Company is also pleased to announce that it has opened a Bitcoin custodian account with Coinbase, one of the world's leading and most established digital asset platforms.

The custodian account will provide institutional-grade, state-of-the-art digital asset storage in which the Company can safely store its mined Bitcoin, once it has finalised the construction phase of the site and commenced full operations. The custodial solution of Coinbase incorporates advanced security protocols designed to protect digital assets and supports the Company's commitment to robust risk management and best‑practice corporate governance in line with the Company's custody policy.

Related Party Transaction

The agreement with Terra Solis constitutes a related party transaction under Rule 4.6 of the AQSE Growth Market Rulebook (the "Transaction") as Stefan Michaelides, a Director of the Company, and Dragan Jovanovich, a substantial shareholder of the Company, are both directors of Terra Solis. The Directors of the Company independent of this transaction, being Guy Winterflood and Patrick Claridge, consider that, having exercised reasonable care, skill and diligence, the terms of the Transaction are fair and reasonable insofar as shareholders are concerned as is required pursuant to Rule 4.6.

Stefan Michaelides, Chief Executive Officer of Sterling Digital plc, commented:

"Selecting Coinbase Institutional as our custody provider marks a pivotal moment for Sterling Digital. This is foundational infrastructure for our long-term strategy execution - as we move towards first bitcoin production, having institutional-grade custody in place is critical. Coinbase is the gold standard in this space, and with this in place we have the infrastructure required to execute our bitcoin mining and treasury strategy at scale.

We are also delighted to be moving ahead with our phase 1 infrastructure build-out and look forward to providing further updates shortly. "

The Directors of the Company accept responsibility for the contents of this announcement.

For further information please contact:

About Sterling

Sterling Digital plc was incorporated for the purpose of establishing a Bitcoin mining business and was admitted to trading on the AQSE Growth Market on 1 December 2025. The Company intends to locate modular, self-contained Bitcoin mining operations directly on stranded gas fields in the United States, providing the Company with a low-cost energy solution for its mining operations.

The Company's objective is to deliver sustainable long-term capital growth for shareholders via:

• compounding Bitcoin exposure via cheapest-in-class mining; and

• active management of the Company's Bitcoin reserves.

Sterling Digital's strategy of utilising stranded natural gas to generate its electricity requirements enables the Company to produce Bitcoin at materially lower costs than comparable grid-connected miners, while simultaneously achieving ESG alignment by monetising gas resources that are otherwise flared as a by-product of the oil and gas industry.  This model delivers both enhanced mining efficiency and a significant competitive cost advantage within the Bitcoin mining sector.

The Company benefits from a highly experienced management team with proven track records across Bitcoin mining, energy management, fintech and capital markets. Their combined expertise spans modular mining deployments, power infrastructure, capital raising, and regulated crypto exchange operations.

https://sterlingdigital.com/

Social media links:

LinkedIn: https://www.linkedin.com/company/sterling-digital-plc/

X: https://x.com/SterlingASIC

Forward Looking Statements

Certain statements in this announcement are, or may be deemed to be, forward-looking statements. Forward looking statements are identified by their use of terms and phrases such as "believe", "could", "should", "envisage'', "estimate", "intend", "may", "plan", "potentially", "expect", "will" or the negative of those, variations or comparable expressions, including references to assumptions. These forward-looking statements are not based on historical facts but rather on the Directors' current expectations and assumptions regarding the Company's future growth, results of operations, performance, future capital and other expenditures (including the amount, nature and sources of funding thereof), competitive advantages, business prospects and opportunities. Such forward-looking statements reflect the Directors' current beliefs and assumptions and are based on information currently available to the Directors.