As Chevron has been used previously for comparison of change of control provisions, I humbly suggest you apply the same "amusement" to the respective holdings of their BoD:
0.02%
http://finance.yahoo.com/q/ks?s=cvx
http://www.secform4.com/insider-trading/93410.htm
Approximately 99% lower than that of PTSC's BoD.
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Be well