Runcorn nano-material firm Nanoco Group plc has announced its intention to delist from the main market of the London Stock Exchange, citing “cost and regulatory burden” among other reasons.

Nanoco shares fell another 50% to around 3p. The shares have fallen about 90% over the past five years, slashing the firm’s stock market to a mere £6 million.

“Following the proposed cancellation, it is proposed to re-register the company as a private limited company and to adopt new articles of association to reflect the change in the company’s status to a private limited company.

“As both the cancellation and the registration require the approval of not less than 75 per cent. of the votes cast by shareholders (whether present in person or by proxy) at a General Meeting, a circular has today been dispatched to shareholders containing further detail about the cancellation and the re-registration and convening a general meeting to be held at 10.30 a.m. on 19 June 2026 for the purposes of obtaining the necessary approvals …

“The costs of being a listed public company, both in terms of financial and management time, are significant.

“The annual financial costs are estimated to be £0.7m. The cancellation would eliminate the annual expenditure associated with maintaining a listing on the Official List and would also enable the business to reallocate that expenditure to core business activities and free up management time to achieve its strategic objectives.”