SOLARIS OILFIELD INFRASTRUCT

Ticker: SEI CUSIP: 83418M103 Class: Common Stock

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q4 2018

Shares 3,721 Value ($000) $45 Avg Close $10.59 Range $7.89 - $14.30

Q3 2018

Shares 3,431 Value ($000) $65 Avg Close $11.96 Range $9.66 - $14.32

Q2 2018

Shares 3,765 Value ($000) $54 Avg Close $12.37 Range $10.03 - $15.03

Q1 2018

Shares 240 Value ($000) $4 Avg Close $14.02 Range $11.69 - $17.86

Q4 2017

Shares 2,688 Value ($000) $58 Avg Close $12.61 Range $10.45 - $16.39

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	3,721	$45	$10.59	$7.89 - $14.30
Q3 2018	3,431	$65	$11.96	$9.66 - $14.32
Q2 2018	3,765	$54	$12.37	$10.03 - $15.03
Q1 2018	240	$4	$14.02	$11.69 - $17.86
Q4 2017	2,688	$58	$12.61	$10.45 - $16.39