Diana Shipping has extended the buyback deadline and raised the price on a tender offer it made last month.

The New York-listed owner on April 15 began an offer to repurchase up to 3.13 million shares, or about 3.1%, of its outstanding common stock at $3.20 per share. The offer was set to expire on 13 May.

Diana today said it moved the buyback cut-off to end of business on 28 May "to allow additional time for stockholders to tender their shares" and lifted the share price to $3.40.