ONE GAS INC

Ticker: OGS CUSIP: 68235P108 Class: COM

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q4 2025

Shares 54,185 Value ($000) $4,186 Avg Close $80.38 Range $76.52 - $83.96

Q3 2025

Shares 40,737 Value ($000) $3,297 Avg Close $74.90 Range $71.27 - $81.48

Q2 2025

Shares 33,457 Value ($000) $2,404 Avg Close $75.12 Range $69.75 - $82.25

Q1 2025

Shares 26,120 Value ($000) $1,974 Avg Close $72.08 Range $66.38 - $77.00

Q4 2024

Shares 26,720 Value ($000) $1,850 Avg Close $72.98 Range $66.92 - $78.89

Q3 2024

Shares 27,510 Value ($000) $2,047 Avg Close $68.78 Range $61.54 - $74.99

Q2 2024

Shares 27,515 Value ($000) $1,757 Avg Close $62.72 Range $58.31 - $66.52

Q1 2024

Shares 38,305 Value ($000) $2,472 Avg Close $61.35 Range $57.74 - $65.75

Q4 2023

Shares 49,003 Value ($000) $3,122 Avg Close $63.18 Range $55.50 - $70.66

Q3 2023

Shares 47,720 Value ($000) $3,258 Avg Close $75.57 Range $67.94 - $82.06

Q2 2023

Shares 46,705 Value ($000) $3,587 Avg Close $79.91 Range $75.88 - $83.89

Q1 2023

Shares 52,906 Value ($000) $4,192 Avg Close $79.26 Range $73.46 - $84.26

Q4 2022

Shares 46,640 Value ($000) $3,532 Avg Close $77.17 Range $68.86 - $89.01

Q4 2021

Shares 2,847 Value ($000) $221 Avg Close $69.61 Range $63.23 - $78.01

Q3 2021

Shares 12,354 Value ($000) $783 Avg Close $71.29 Range $62.52 - $75.93

Q2 2021

Shares 4,507 Value ($000) $335 Avg Close $77.01 Range $72.50 - $81.90

Q1 2021

Shares 11,126 Value ($000) $857 Avg Close $72.97 Range $66.77 - $78.01

Q4 2020

Shares 11,226 Value ($000) $863 Avg Close $75.58 Range $66.94 - $82.40

Q3 2020

Shares 59,528 Value ($000) $4,109 Avg Close $73.69 Range $65.51 - $79.98

Q2 2020

Shares 122,929 Value ($000) $9,472 Avg Close $80.79 Range $72.25 - $92.00

Q1 2020

Shares 122,229 Value ($000) $10,222 Avg Close $88.45 Range $63.67 - $96.97

Q4 2019

Shares 133,430 Value ($000) $12,486 Avg Close $91.47 Range $84.90 - $96.66

Q3 2019

Shares 139,939 Value ($000) $13,450 Avg Close $91.28 Range $86.81 - $96.53

Q2 2019

Shares 144,842 Value ($000) $13,080 Avg Close $88.47 Range $85.45 - $92.66

Q1 2019

Shares 144,641 Value ($000) $12,878 Avg Close $84.03 Range $75.82 - $90.52

Q4 2018

Shares 106,720 Value ($000) $8,496 Avg Close $82.46 Range $75.51 - $87.75

Q3 2018

Shares 93,420 Value ($000) $7,687 Avg Close $78.28 Range $73.75 - $83.12

Q2 2018

Shares 95,819 Value ($000) $7,162 Avg Close $71.11 Range $65.00 - $76.24

Q1 2018

Shares 80,622 Value ($000) $5,323 Avg Close $67.29 Range $62.20 - $73.58

Q4 2017

Shares 94,928 Value ($000) $6,955 Avg Close $75.81 Range $70.66 - $79.51

Q3 2017

Shares 112,820 Value ($000) $8,309 Avg Close $73.35 Range $68.45 - $76.06

Q2 2017

Shares 115,924 Value ($000) $8,093 Avg Close $69.75 Range $67.27 - $72.97

Q1 2017

Shares 110,224 Value ($000) $7,452 Avg Close $64.84 Range $61.42 - $68.79

Q4 2016

Shares 127,027 Value ($000) $8,125 Avg Close $60.73 Range $55.98 - $64.94

Q3 2016

Shares 89,330 Value ($000) $5,525 Avg Close $63.44 Range $59.28 - $67.35

Q2 2016

Shares 19,530 Value ($000) $1,301 Avg Close $60.28 Range $56.51 - $66.60

Q1 2016

Shares 23,917 Value ($000) $1,462 Avg Close $56.41 Range $48.01 - $62.25

Q4 2015

Shares 23,211 Value ($000) $1,165 Avg Close $48.28 Range $44.68 - $51.79

Q3 2015

Shares 21,611 Value ($000) $980 Avg Close $43.80 Range $41.23 - $45.58

Q2 2015

Shares 15,407 Value ($000) $656 Avg Close $42.67 Range $40.83 - $44.75

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	54,185	$4,186	$80.38	$76.52 - $83.96
Q3 2025	40,737	$3,297	$74.90	$71.27 - $81.48
Q2 2025	33,457	$2,404	$75.12	$69.75 - $82.25
Q1 2025	26,120	$1,974	$72.08	$66.38 - $77.00
Q4 2024	26,720	$1,850	$72.98	$66.92 - $78.89
Q3 2024	27,510	$2,047	$68.78	$61.54 - $74.99
Q2 2024	27,515	$1,757	$62.72	$58.31 - $66.52
Q1 2024	38,305	$2,472	$61.35	$57.74 - $65.75
Q4 2023	49,003	$3,122	$63.18	$55.50 - $70.66
Q3 2023	47,720	$3,258	$75.57	$67.94 - $82.06
Q2 2023	46,705	$3,587	$79.91	$75.88 - $83.89
Q1 2023	52,906	$4,192	$79.26	$73.46 - $84.26
Q4 2022	46,640	$3,532	$77.17	$68.86 - $89.01
Q4 2021	2,847	$221	$69.61	$63.23 - $78.01
Q3 2021	12,354	$783	$71.29	$62.52 - $75.93
Q2 2021	4,507	$335	$77.01	$72.50 - $81.90
Q1 2021	11,126	$857	$72.97	$66.77 - $78.01
Q4 2020	11,226	$863	$75.58	$66.94 - $82.40
Q3 2020	59,528	$4,109	$73.69	$65.51 - $79.98
Q2 2020	122,929	$9,472	$80.79	$72.25 - $92.00
Q1 2020	122,229	$10,222	$88.45	$63.67 - $96.97
Q4 2019	133,430	$12,486	$91.47	$84.90 - $96.66
Q3 2019	139,939	$13,450	$91.28	$86.81 - $96.53
Q2 2019	144,842	$13,080	$88.47	$85.45 - $92.66
Q1 2019	144,641	$12,878	$84.03	$75.82 - $90.52
Q4 2018	106,720	$8,496	$82.46	$75.51 - $87.75
Q3 2018	93,420	$7,687	$78.28	$73.75 - $83.12
Q2 2018	95,819	$7,162	$71.11	$65.00 - $76.24
Q1 2018	80,622	$5,323	$67.29	$62.20 - $73.58
Q4 2017	94,928	$6,955	$75.81	$70.66 - $79.51
Q3 2017	112,820	$8,309	$73.35	$68.45 - $76.06
Q2 2017	115,924	$8,093	$69.75	$67.27 - $72.97
Q1 2017	110,224	$7,452	$64.84	$61.42 - $68.79
Q4 2016	127,027	$8,125	$60.73	$55.98 - $64.94
Q3 2016	89,330	$5,525	$63.44	$59.28 - $67.35
Q2 2016	19,530	$1,301	$60.28	$56.51 - $66.60
Q1 2016	23,917	$1,462	$56.41	$48.01 - $62.25
Q4 2015	23,211	$1,165	$48.28	$44.68 - $51.79
Q3 2015	21,611	$980	$43.80	$41.23 - $45.58
Q2 2015	15,407	$656	$42.67	$40.83 - $44.75