PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

AMICA MUTUAL INSURANCE CO's Holding History (CIK: 0000857508)

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

Q2 2016

Shares 105,704 Value ($000) $2,254 Avg Close $18.84 Range $16.06 - $22.12

Q3 2013

Shares 361,295 Value ($000) $7,724 Avg Close $20.54 Range $18.83 - $22.41

Q2 2013

Shares 361,295 Value ($000) $6,993 Avg Close $21.83 Range $18.96 - $25.12

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2016	105,704	$2,254	$18.84	$16.06 - $22.12
Q3 2013	361,295	$7,724	$20.54	$18.83 - $22.41
Q2 2013	361,295	$6,993	$21.83	$18.96 - $25.12