The buyback offer from R Systems International to its shareholders opens on Friday and closes on March 29. The company plans to buy back up to 36.90 lakh shares, representing 2.98 per cent of the total paid-up equity share capital of the company, from shareholders at ₹65 a share. As the buyback offer is through the tender route on proportionate basis, shareholders whose names had appeared on its record book as of February 1 can only participate.