PROSPERITY BANCSHARES INC

Ticker: PB CUSIP: 743606105 Class: Common Stock

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

Note: Option positions (PUT/CALL) are excluded.

Q1 2017

Shares 57,580 Value ($000) $4,014 Avg Close $56.04 Range $50.62 - $60.04

Q4 2016

Shares 48,690 Value ($000) $3,495 Avg Close $48.03 Range $40.52 - $56.81

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	57,580	$4,014	$56.04	$50.62 - $60.04
Q4 2016	48,690	$3,495	$48.03	$40.52 - $56.81