PROPETRO HLDG CORP

Ticker: PUMP CUSIP: 74347M108 Class: Common Stock

Blume Capital Management, Inc.'s Holding History (CIK: 0001587192)

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

Q4 2019

Shares 1,100 Value ($000) $12 Avg Close $8.94 Range $7.07 - $11.46

Q3 2019

Shares 800 Value ($000) $7 Avg Close $13.88 Range $8.68 - $21.83

Q1 2018

Shares 614 Value ($000) $9 Avg Close $18.08 Range $14.56 - $22.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	1,100	$12	$8.94	$7.07 - $11.46
Q3 2019	800	$7	$13.88	$8.68 - $21.83
Q1 2018	614	$9	$18.08	$14.56 - $22.88