ONE GAS INC

Ticker: OGS CUSIP: 68235P108 Class: COM

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

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

Q1 2019

Shares 2,800 Value ($000) $249 Avg Close $84.03 Range $75.82 - $90.52

Q1 2018

Shares 180 Value ($000) $12 Avg Close $67.29 Range $62.20 - $73.58

Q4 2017

Shares 7,938 Value ($000) $582 Avg Close $75.81 Range $70.66 - $79.51

Q1 2014

Shares 330 Value ($000) $12 Avg Close $34.23 Range $31.94 - $37.01

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	2,800	$249	$84.03	$75.82 - $90.52
Q1 2018	180	$12	$67.29	$62.20 - $73.58
Q4 2017	7,938	$582	$75.81	$70.66 - $79.51
Q1 2014	330	$12	$34.23	$31.94 - $37.01