PROPETRO HLDG CORP

Ticker: PUMP CUSIP: 74347M108 Class: Common Stock

EMERALD ADVISERS, LLC's Holding History (CIK: 0001015083)

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

Q1 2019

Shares 9,220 Value ($000) $208 Avg Close $17.90 Range $11.78 - $23.32

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	9,220	$208	$17.90	$11.78 - $23.32