PIONEER ENERGY SVCS CORP

CUSIP: 723664108 Class: COM

BOKF, NA's Holding History (CIK: 0000009634)

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

Q1 2017
Shares 40 Value ($000) $0 Avg Close — Range —
Q4 2016
Shares 4,440 Value ($000) $30 Avg Close — Range —
Q3 2013
Shares 48,866 Value ($000) $367 Avg Close — Range —
Q2 2013
Shares 35,041 Value ($000) $232 Avg Close — Range —