PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

Field & Main Bank's Holding History (CIK: 0001594492)

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

Q1 2014

Shares 345 Value ($000) $11 Avg Close $27.81 Range $24.37 - $31.95

Q4 2013

Shares 345 Value ($000) $9 Avg Close $23.93 Range $21.29 - $26.09

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	345	$11	$27.81	$24.37 - $31.95
Q4 2013	345	$9	$23.93	$21.29 - $26.09