PEYTO EXPLORATION CORP

Ticker: PEYUF CUSIP: 717046106 Class: FOREIGN CANADIAN

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q2 2017

Shares 155,464 Value ($000) $2,816 Avg Close $11.30 Range $10.46 - $12.82

Q1 2017

Shares 593,333 Value ($000) $12,168 Avg Close $12.79 Range $11.79 - $14.72

Q4 2016

Shares 818,017 Value ($000) $20,258 Avg Close $15.46 Range $14.20 - $17.35

Q3 2016

Shares 818,788 Value ($000) $22,939 Avg Close $16.65 Range $15.51 - $17.75

Q2 2016

Shares 1,247,694 Value ($000) $33,318 Avg Close $14.54 Range $11.63 - $16.68

Q1 2016

Shares 698,296 Value ($000) $15,597 Avg Close $11.84 Range $9.67 - $13.29

Q4 2015

Shares 548,052 Value ($000) $9,812 Avg Close $11.58 Range $8.91 - $13.99

Q3 2015

Shares 561,644 Value ($000) $11,625 Avg Close $12.35 Range $10.06 - $13.87

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	155,464	$2,816	$11.30	$10.46 - $12.82
Q1 2017	593,333	$12,168	$12.79	$11.79 - $14.72
Q4 2016	818,017	$20,258	$15.46	$14.20 - $17.35
Q3 2016	818,788	$22,939	$16.65	$15.51 - $17.75
Q2 2016	1,247,694	$33,318	$14.54	$11.63 - $16.68
Q1 2016	698,296	$15,597	$11.84	$9.67 - $13.29
Q4 2015	548,052	$9,812	$11.58	$8.91 - $13.99
Q3 2015	561,644	$11,625	$12.35	$10.06 - $13.87