sorry should be 02/04/14 and not 02/01/14.

If continous buying back occured, how come number of treasury shares dropped from 5,622,557 on 02/01/14 to 546,467 on 07/04/14 ?

Both will be good:
If lifting of PN17 - Stock will go up, look at Adventa last week.
If Buy-Out - normally priced at 1.2 times of NTA; this will indicate a price of around RM1.70

From the above observation. It is a buy.