E Jean Davis

Insider Trading: Purchases

Symbol	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
PSTB	$4.59	2,000	$9,180.00	67,860	2012-06-11	Filing
PSTB	$4.43	2,000	$8,859.80	65,860	2012-06-05	Filing
PSTB	$4.97	50,000	$248,500.00	63,860	2011-05-13	Filing