Trainline.com Ltd., a U.K.-based rail and coach ticket-booking platform backed by KKR & Co., plans to raise gross proceeds of £75 million when it debuts on the London Stock Exchange in June.

The final offer price is expected to be determined following a bookbuilding process.

The company plans to float at least 25% of its issued share capital, with certain of its existing shareholders to offer an overallotment option of 15% of the total offer size.

Trainline tapped J.P. Morgan Securities PLC and Morgan Stanley & Co. International PLC as joint sponsors, joint global coordinators and joint book runners and KKR Capital Markets Ltd. as joint global coordinator and joint book runner. Barclays Bank PLC and Numis Securities Ltd. are also joint book runners.