PROPETRO HLDG CORP

Ticker: PUMP CUSIP: 74347M108 Class: Common Stock

VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.'s Holding History (CIK: 0001021642)

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

Q2 2019

Shares 898,050 Value ($000) $18,589 Avg Close $21.24 Range $17.63 - $25.38

Q1 2019

Shares 941,375 Value ($000) $21,219 Avg Close $17.90 Range $11.78 - $23.32

Q4 2018

Shares 817,275 Value ($000) $10,069 Avg Close $16.47 Range $11.27 - $19.76

Q3 2018

Shares 1,262,425 Value ($000) $20,817 Avg Close $16.12 Range $14.32 - $17.89

Q2 2018

Shares 1,374,075 Value ($000) $21,545 Avg Close $17.21 Range $14.00 - $20.91

Q1 2018

Shares 1,943,850 Value ($000) $30,887 Avg Close $18.08 Range $14.56 - $22.88

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	898,050	$18,589	$21.24	$17.63 - $25.38
Q1 2019	941,375	$21,219	$17.90	$11.78 - $23.32
Q4 2018	817,275	$10,069	$16.47	$11.27 - $19.76
Q3 2018	1,262,425	$20,817	$16.12	$14.32 - $17.89
Q2 2018	1,374,075	$21,545	$17.21	$14.00 - $20.91
Q1 2018	1,943,850	$30,887	$18.08	$14.56 - $22.88