Business
Further divestment of undeveloped acreage
Zephyr Energy plc has announced a further divestment of undeveloped non-core acreage in the Powder River Basin, Wyoming, generating aggregate gross proceeds of US$2.275 million. This divestment, effective June 1, 2026, and scheduled for completion in mid-June, follows previous disposals of acreage acquired as part of a US$7.3 million acquisition announced on August 26, 2025. Since that acquisition, Zephyr has generated total asset sales of approximately US$7.0 million, including cash proceeds and the divestment of liabilities, and US$1.7 million in revenue from acquired production through December 31, 2025, while retaining the majority of production. Disclaimer*
About this update from Zephyr Energy Plc
Prior to publication, the information contained within this announcement was deemed by the Company to constitute inside information as stipulated under the UK Market Abuse Regulation. With the publication of this announcement, this information is now considered to be in the public domain. 21 May 2026 Zephyr Energy plc ("Zephyr" or the "Company") Further divestment of undeveloped acreage Zephyr Energy plc (AIM: ZPHR) (OTCQB: ZPHRF) is pleased to announce a further divestment of undeveloped non-core acreage in two separate transactions generating aggregate gross proceeds of US$2.275 million (subject to closing adjustments) (collectively, the "Divestment"). The 1,837 acres being divested are located in the Powder River Basin in Wyoming, U.S. They were acquired by the Company as part of its US$7.3 million acquisition of a portfolio of both proved developed producing wells and largely undeveloped acreage, the completion of which was announced on 26 August 2025 (the "Acquisition"). The Divestment has an effective date of 1 June 2026, and both transactions are scheduled for completion (including the payment of consideration to Zephyr) in the week commencing 15 June 2026. The Divestment follows previous disposals of non-core acreage that was also acquired as part of the Acquisition (as announced by the Company on 30 December 2025 and 24 March 2026). By way of context, the US$7.3 million purchase price of the Acquisition was determined by the Company primarily based on the producing assets acquired. However, the transaction also included approximately 6,350 acres of largely undeveloped, potential development acreage in the Williston, Powder River, Denver-Julesburg and other Rocky Mountain basins. Since the completion of the Acquisition, and following the completion of the Divestment, the Acquisition will have: · Generated total asset sales of circa US$7.0 million (comprised of US$5.8 million in cash proceeds and the divestment of circa US$1.2 million in near-term plugging, abandonment and capital liabilities); · Generated US$1.7 million in revenue from acquired production (through to 31 December 2025); The Company is currently evaluating options for the remaining undeveloped acreage acquired and will provide further updates in due course. &nb...