Insider Transactions Reported by 22 Insiders of ONE Gas, Inc.

Symbol: OGS on NYSE
Location: Tulsa, OK

Quick Takeaways

OGS - ONE Gas, Inc. has 22 insiders with reported activity on this page.
Net insider value flow over the last year: -$396,403.
Recent transaction rows are available for direct filing-level review.

What Changed

Buy value: ; sell value: $396,402.
Net share flow: <span class="text-red-600">-4,850</span>.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Official SEC Source

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Net insider flow leans to selling over the last 12 months. Net value: -$396,403.

Buys

Shares: 0

Insiders: 0

Sells

$396,403

Shares: 4,850

Insiders: 3

Net

-$396,403

Shares: -4,850

Insiders: -3

Window (months)	Sell shares	Buy $	Sell $	Net $
0-3	1,850	$0	$159,829	+$159,829
3-6	3,000	$0	$236,574	+$236,574
6-9	0	$0	$0	$0
9-12	0	$0	$0	$0

ONE Gas, Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Pierce H. Norton II	Retired Director, President and Chief Executive Officer	$21,052,466			Mixed	27 Dec 2021
Curtis L. Dinan	Senior Vice President and Chief Operating Officer	$14,463,917			Mixed	14 Feb 2026
Robert S. McAnnally	President and Chief Executive Officer, Director	$11,271,943			Mixed	14 Feb 2026
Caron A. Lawhorn	Retired Senior Vice President and Chief Financial Officer	$9,017,536			Mixed	28 Jun 2024
Joseph L. McCormick	Former Senior Vice President, General Counsel and Assistant Secretary	$7,297,736			Mixed	16 Feb 2026
Pattye L. Moore	Director	$3,851,757			Mixed	22 May 2025
Mark A. Bender	Senior Vice President, Administration and Chief Information Officer	$3,156,103			Mixed	14 Feb 2026
Douglas H. Yaeger	Director	$2,143,181			Mixed	25 May 2023
Christopher P. Sighinolfi	Senior Vice President and Chief Financial Officer	$1,937,387			Mixed	14 Feb 2026
John W. Gibson	Director	$1,831,003			Mixed	22 May 2025
William K. Shortridge	Senior Vice President, Operations and Customer Service	$1,674,680			Mixed	14 Feb 2026
Eduardo A. Rodriguez	Director	$1,498,711	-$73,389	-4.7%	Mixed	06 Mar 2026
Robert B. Evans	Director	$1,347,081			Mixed	25 May 2023
Michael G. Hutchinson	Director	$1,153,769	-$236,574	-17%	Filing P/S	04 Dec 2025
Angela E. Kouplen	Senior Vice President and Chief Human Resources Officer	$764,743			Mixed	14 Feb 2026
Jeffrey J. Husen	Vice President, Chief Accounting Officer and Controller	$706,832			Mixed	21 Feb 2022
Tracy E. Hart	Director	$705,650			Mixed	22 May 2025
Regina L. Gregory	Senior Vice President, General Counsel and Assistant Secretary	$549,967			Mixed	16 Feb 2026
Brian F. Brumfield	Vice President, Chief Accounting Officer and Controller	$472,730	-$86,440	-15%	Mixed	24 Feb 2026
Deborah Hersman	Director	$415,806			Mixed	22 May 2025
Yves C. Siegel	Director	$267,503			Mixed	22 May 2025
Sanjay D. Meshri	Director	$264,049			Mixed	22 May 2025

Top shareholders of ONE Gas, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock, Inc.	13F 13D/G	Company	13% from 13D/G	8,769,883	$677,473,471	—	31 Dec 2025	13F 13D/G
VANGUARD GROUP INC	13F	Company	11%	6,489,014	$501,276,333	—	31 Dec 2025	13F
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	13D/G	—	6.6%	3,972,412	$309,212,550	$0	31 Mar 2025	13D/G
AMERICAN CENTURY COMPANIES INC	13F	Company	5.9%	3,502,768	$270,588,984	—	31 Dec 2025	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	5.4%	3,199,956	$247,196,602	—	31 Dec 2025	13F
STATE STREET CORP	13F 13D/G	Company · STATE STREET CORPORATION	5% from 13D/G	2,983,016	$230,437,986	—	31 Dec 2025	13F 13D/G
T. Rowe Price Investment Management, Inc.	13F	Company	3.2%	1,884,134	$145,550,000	—	31 Dec 2025	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	2.9%	1,700,735	$131,381,779	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.5%	1,490,809	$115,181,871	—	31 Dec 2025	13F
GOLDMAN SACHS GROUP INC	13F	Company	2.3%	1,398,440	$108,029,459	—	31 Dec 2025	13F
Energy Income Partners, LLC	13F	Company	2.2%	1,316,991	$101,737,555	—	31 Dec 2025	13F
EARNEST PARTNERS LLC	13F	Company	2%	1,187,673	$91,747,739	—	31 Dec 2025	13F
Boston Trust Walden Corp	13F	Company	1.9%	1,103,732	$85,263,297	—	31 Dec 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.7%	1,009,318	$77,971,922	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	1.7%	992,430	$76,665,313	—	31 Dec 2025	13F
NORGES BANK	13F	Company	1.5%	916,079	$70,767,103	—	31 Dec 2025	13F
Nuveen, LLC	13F	Company	1.3%	776,495	$59,984,239	—	31 Dec 2025	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.3%	757,626	$58,526,609	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	1.3%	747,180	$57,719,633	—	31 Dec 2025	13F
FRANKLIN RESOURCES INC	13F	Company	1.2%	718,267	$55,486,125	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	1.2%	711,739	$54,981,839	—	31 Dec 2025	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	1.1%	627,114	$48,444,557	—	31 Dec 2025	13F
JPMORGAN CHASE & CO	13F	Company	1%	609,933	$47,117,328	—	31 Dec 2025	13F
FIRST TRUST ADVISORS LP	13F	Company	1%	597,575	$46,162,672	—	31 Dec 2025	13F
SILVERCREST ASSET MANAGEMENT GROUP LLC	13F	Company	0.99%	591,353	$45,682,248	—	31 Dec 2025	13F
DUFF & PHELPS INVESTMENT MANAGEMENT CO	13F	Company	0.97%	576,000	$44,496,000	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.87%	519,696	$40,146,551	—	31 Dec 2025	13F
ProShare Advisors LLC	13F	Company	0.82%	490,904	$37,922,336	—	31 Dec 2025	13F
Squarepoint Ops LLC	13F	Company	0.74%	443,093	$34,228,934	—	31 Dec 2025	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	0.69%	409,133	$31,605,524	—	31 Dec 2025	13F
Qube Research & Technologies Ltd	13F	Company	0.68%	405,312	$31,310,352	—	31 Dec 2025	13F
Rockefeller Capital Management L.P.	13F	Company	0.63%	374,696	$28,945,297	—	31 Dec 2025	13F
DEUTSCHE BANK AG\	13F	Company	0.6%	356,977	$27,576,474	—	31 Dec 2025	13F
Legal & General Group Plc	13F	Company	0.52%	312,694	$24,155,610	—	31 Dec 2025	13F
Invesco Ltd.	13F	Company	0.48%	286,482	$22,130,736	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	0.47%	279,594	$21,598,637	—	31 Dec 2025	13F
Pierce H. Norton II	3/4/5	Retired Director, President and Chief Executive Officer	— class O/S missing	264,445	$21,052,466	—	27 Dec 2021	3/4/5
UBS Group AG	13F	Company	0.43%	254,304	$19,644,985	—	31 Dec 2025	13F
Point72 Asset Management, L.P.	13F	Company	0.39%	229,740	$17,747,415	—	31 Dec 2025	13F
ExodusPoint Capital Management, LP	13F	Company	0.35%	210,820	$16,285,845	—	31 Dec 2025	13F
RHUMBLINE ADVISERS	13F	Company	0.34%	201,123	$15,536,733	—	31 Dec 2025	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.33%	195,789	$15,124,697	—	31 Dec 2025	13F
GABELLI FUNDS LLC	13F	Company	0.32%	190,800	$14,739,300	—	31 Dec 2025	13F
Aberdeen Group plc	13F	Company	0.32%	189,764	$14,659,269	—	31 Dec 2025	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.31%	187,351	$14,472,865	—	31 Dec 2025	13F
Curtis L. Dinan	3/4/5	Senior Vice President and Chief Operating Officer	— mixed-class rows	170,360 mixed-class rows	$14,463,917	—	14 Feb 2026	3/4/5
Retirement Systems of Alabama	13F	Company	0.3%	181,359	$14,009,983	—	31 Dec 2025	13F
SIR Capital Management, L.P.	13F	Company	0.27%	162,523	$12,554,902	—	31 Dec 2025	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.27%	160,645	$12,409,826	—	31 Dec 2025	13F
PANAGORA ASSET MANAGEMENT INC	13F	Company	0.26%	156,410	$12,082,673	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for ONE Gas, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
Eduardo A. Rodriguez	OGS	Common stock, par value $0.01	Sale	-5.98%	$73,389	$86.34	-850	13,362	06 Mar 2026	Direct
Brian F. Brumfield	OGS	Common stock, par value $0.01	Sale	-30.8%	$86,440	$86.44	-1,000	2,246	24 Feb 2026	Direct
William K. Shortridge	OGS	Common stock, par value $0.01	Tax liability	-6.73%			-816	11,300	16 Feb 2026	Direct
William K. Shortridge	OGS	Common stock, par value $0.01	Options Exercise	15.9%			1,660	12,116	16 Feb 2026	Direct
William K. Shortridge	OGS	Restricted Units 2026	Award				1,395	1,395	16 Feb 2026	Direct
William K. Shortridge	OGS	Performance Units 2026	Award				2,092	2,092	16 Feb 2026	Direct
William K. Shortridge	OGS	Performance Units 2023	Options Exercise	-100%			-1,956	0	16 Feb 2026	Direct
Joseph L. McCormick	OGS	Common stock, par value $0.01	Tax liability	-2.1%			-1,608	74,907	16 Feb 2026	Direct
Joseph L. McCormick	OGS	Common stock, par value $0.01	Options Exercise	5.23%			3,804	76,515	16 Feb 2026	Direct
Joseph L. McCormick	OGS	Performance Units 2023	Options Exercise	-100%			-4,891	0	16 Feb 2026	Direct
Christopher P. Sighinolfi	OGS	Common stock, par value $0.01	Tax liability	-1.47%			-61.53	4,125	16 Feb 2026	Direct
Christopher P. Sighinolfi	OGS	Common stock, par value $0.01	Options Exercise	48.2%			1,362	4,186	16 Feb 2026	Direct
Christopher P. Sighinolfi	OGS	Restricted Units 2026	Award				3,719	3,719	16 Feb 2026	Direct
Christopher P. Sighinolfi	OGS	Performance Units 2026	Award				5,579	5,579	16 Feb 2026	Direct
Christopher P. Sighinolfi	OGS	Performance Units 2023	Options Exercise	-100%			-1,605	0	16 Feb 2026	Direct
Angela E. Kouplen	OGS	Common stock, par value $0.01	Tax liability	-41%			-1,000	1,439	16 Feb 2026	Direct
Angela E. Kouplen	OGS	Common stock, par value $0.01	Options Exercise	851.6%			2,183	2,439	16 Feb 2026	Direct
Angela E. Kouplen	OGS	Restricted Units 2026	Award				1,534	1,534	16 Feb 2026	Direct
Angela E. Kouplen	OGS	Performance Units 2026	Award				2,301	2,301	16 Feb 2026	Direct
Angela E. Kouplen	OGS	Performance Units 2023	Options Exercise	-100%			-2,639	0	16 Feb 2026	Direct
Brian F. Brumfield	OGS	Common stock, par value $0.01	Tax liability	-13.2%			-438	2,870	16 Feb 2026	Direct
Brian F. Brumfield	OGS	Common stock, par value $0.01	Options Exercise	63.4%			1,284	3,309	16 Feb 2026	Direct
Brian F. Brumfield	OGS	Restricted Units 2026	Award				959	959	16 Feb 2026	Direct
Brian F. Brumfield	OGS	Performance Units 2026	Award				959	959	16 Feb 2026	Direct
Brian F. Brumfield	OGS	Performance Units 2023	Options Exercise	-100%			-1,513	0	16 Feb 2026	Direct
Regina L. Gregory	OGS	Restricted Units 2026	Award				2,557	2,557	16 Feb 2026	Direct
Regina L. Gregory	OGS	Performance Units 2026	Award				3,835	3,835	16 Feb 2026	Direct
Mark A. Bender	OGS	Common stock, par value $0.01	Tax liability	-4.25%			-1,268	28,582	16 Feb 2026	Direct
Mark A. Bender	OGS	Common stock, par value $0.01	Options Exercise	9.93%			2,697	29,851	16 Feb 2026	Direct
Mark A. Bender	OGS	Restricted Units 2026	Award				1,534	1,534	16 Feb 2026	Direct
Mark A. Bender	OGS	Performance Units 2026	Award				2,301	2,301	16 Feb 2026	Direct
Mark A. Bender	OGS	Performance Units 2023	Options Exercise	-100%			-3,179	0	16 Feb 2026	Direct
Curtis L. Dinan	OGS	Common stock, par value $0.01	Tax liability	-1.7%			-2,438	141,263	16 Feb 2026	Direct
Curtis L. Dinan	OGS	Common stock, par value $0.01	Options Exercise	3.9%			5,395	143,701	16 Feb 2026	Direct
Curtis L. Dinan	OGS	Restricted Units 2026	Award				4,649	4,649	16 Feb 2026	Direct
Curtis L. Dinan	OGS	Performance Units 2026	Award				6,974	6,974	16 Feb 2026	Direct
Curtis L. Dinan	OGS	Performance Units 2023	Options Exercise	-100%			-6,358	0	16 Feb 2026	Direct
Robert S. McAnnally	OGS	Common stock, par value $0.01	Tax liability	-13.1%			-8,410	56,005	16 Feb 2026	Direct
Robert S. McAnnally	OGS	Common stock, par value $0.01	Options Exercise	42.1%			19,088	64,415	16 Feb 2026	Direct
Robert S. McAnnally	OGS	Restricted Units 2026	Award				11,158	11,158	16 Feb 2026	Direct
Robert S. McAnnally	OGS	Performance Units 2026	Award				26,034	26,034	16 Feb 2026	Direct
Robert S. McAnnally	OGS	Performance Units 2023	Options Exercise	-100%			-22,497	0	16 Feb 2026	Direct
William K. Shortridge	OGS	Common stock, par value $0.01	Tax liability	-2.02%			-239	11,607	14 Feb 2026	Direct
William K. Shortridge	OGS	Common stock, par value $0.01	Options Exercise	4.83%			546	11,846	14 Feb 2026	Direct
William K. Shortridge	OGS	Restricted Units 2023	Options Exercise	-100%			-489	0	14 Feb 2026	Direct
Christopher P. Sighinolfi	OGS	Common stock, par value $0.01	Tax liability	-4.32%			-204	4,518	14 Feb 2026	Direct
Christopher P. Sighinolfi	OGS	Common stock, par value $0.01	Options Exercise	14.5%			597	4,722	14 Feb 2026	Direct
Christopher P. Sighinolfi	OGS	Restricted Units 2023	Options Exercise	-100%			-535	0	14 Feb 2026	Direct
Angela E. Kouplen	OGS	Common stock, par value $0.01	Tax liability	-13.9%			-301	1,857	14 Feb 2026	Direct
Angela E. Kouplen	OGS	Common stock, par value $0.01	Options Exercise	49.9%			718	2,157	14 Feb 2026	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.