high arctic energy services inc has received approvals to buy back up to about 15 of its shares the energyservices company said the toronto stock exchange accepted its plans to renew its normal course issuer bid allowing it to buy up to 750000 shares high arctic which reported a narrowed loss in the third quarter despite a 33 fall in revenue had about 487 million shares outstanding as of dec 5 the stock closed monday at 150 canadian dollars 110 up less than 1 this year