jkx oil  gas plc said thursday that it is launching a tender offer to buy up to 401 million of its ordinary shares as previously announced the londonlisted energy company said that it will offer to buy the shares at 42 pence 5570 cents a share a 06 discount to the companys closing price of 4225 pence on nov 2 the day before it announced the plan on nov 3 jkx said that it planned to buy the shares via a tender offer cancel its trading on the london stock exchange and reregister as a private company it said that the delisting would ensure that the company was in the best position to raise funds and agree on deals to develop the business it also said that the delisting would reduce administrative costs by about 600000 a year the plan was approved by shareholders at a general meeting on nov 23