Zephyr Energy plc (AIM: ZPHR) has announced a further divestment of undeveloped non-core acreage in Wyoming’s Powder River Basin through two separate transactions worth a combined US$2.275 million before adjustments.
The 1,837 acres being sold were originally acquired as part of the company’s US$7.3 million acquisition completed in August 2025, which included a portfolio of producing wells alongside substantial undeveloped acreage across several Rocky Mountain basins.
The latest divestment becomes effective from June 1, 2026, with completion and payment expected during the week commencing June 15.
The transactions follow earlier sales of non-core acreage announced in December 2025 and March 2026, as Zephyr continues to execute its strategy of monetising undeveloped land while retaining core production assets.
Since completing the original acquisition, the company said the deal will have generated approximately US$7.0 million through asset sales and liability reductions once the latest transactions close. This total comprises US$5.8 million in cash proceeds and the transfer of around US$1.2 million in near-term plugging, abandonment and capital obligations.
In addition, the acquired production assets generated US$1.7 million in revenue through December 31, 2025.
Chief executive Colin Harrington said the company has now generated more than US$8.7 million through revenues, acreage sales and cost savings linked to the acquisition, while still retaining the majority of the original production base.
Zephyr said it continues evaluating options for the remaining undeveloped acreage acquired in the transaction and expects to provide further updates in due course.
