. the repurchase program does not include specific price targets or timetables ; may be executed through open market purchases or privately negotiated transactions , or utiliz- ing rule 10b5-1 programs ; and may be suspended at any time . a rule 10b5-1 repurchase plan allows the firm to repurchase shares during periods when it would not otherwise be repurchasing com- mon stock 2013 for example , during internal trading 201cblack-out peri- ods