In London on June 30, 2026, PrimeStone Capital LLP, a shareholder owning approximately 7% of Gresham House Energy Storage Fund plc, has issued a public letter to the Board of Directors. The letter urges the Board to make arrangements for initiating a formal sale process by September 2026. This announcement follows PrimeStone Capital's stake in the company and its push for strategic steps towards a potential sale.