ONE Gas (OGS) officer sells 1,000 shares, retains over 3,600 total

Rhea-AI Filing Summary

ONE Gas, Inc. officer Brian F. Brumfield reported an open-market sale of 1,000 shares of common stock at $86.44 per share on February 24, 2026. After this sale, he directly owned 2,246.212 shares and indirectly held 1,434 shares through a 401(k) plan.

Insider Trade Summary

Net Seller: 1,000 shares ($86,440)

Net Sell 2 txns

Insider Brumfield Brian F.

Role See Remarks

Sold 1,000 shs ($86K)

Type	Security	Shares	Price	Value
Sale	Common stock, par value $0.01	1,000	$86.44	$86K
holding	Common stock, par value $0.01	--	--	--

Holdings After Transaction: Common stock, par value $0.01 — 2,246.212 shares (Direct); Common stock, par value $0.01 — 1,434 shares (Indirect, by 401(k) Plan)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Brumfield Brian F.

(Last) (First) (Middle)

15 E. 5TH STREET

(Street)

TULSA OK 74103

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ONE Gas, Inc. [ OGS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	See Remarks

3. Date of Earliest Transaction (Month/Day/Year)
02/24/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common stock, par value $0.01	02/24/2026		S		1,000	D	$86.44	2,246.212	D
Common stock, par value $0.01								1,434	I	by 401(k) Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Vice President, Chief Accounting Officer and Controller

	/s/ Brian K. Shore, Attorney-in-Fact for Brian F. Brumfield	02/25/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did ONE Gas (OGS) officer Brian F. Brumfield report?

Brian F. Brumfield reported selling 1,000 ONE Gas common shares in an open-market trade at $86.44 per share. The filing also shows his remaining direct and indirect share balances after the transaction was completed.

How many ONE Gas (OGS) shares did Brian F. Brumfield own after the reported sale?

After the sale, Brian F. Brumfield directly owned 2,246.212 ONE Gas shares. He also indirectly held 1,434 shares through a 401(k) plan, according to the ownership balances reported in the Form 4 filing.

At what price were the ONE Gas (OGS) shares sold in Brian F. Brumfield’s Form 4?

The 1,000 ONE Gas shares were sold at an average price of $86.44 per share. This price reflects an open-market sale transaction reported as code “S” in the Form 4 filing details.

What type of transaction is code “S” in the ONE Gas (OGS) Form 4 for Brian F. Brumfield?

Transaction code “S” in this Form 4 represents a sale in the open market or private transaction. The filing identifies the action as an open-market sale of ONE Gas common stock by the reporting officer.

How many ONE Gas (OGS) shares does Brian F. Brumfield hold indirectly through a 401(k) plan?

Brian F. Brumfield indirectly holds 1,434 ONE Gas common shares through a 401(k) plan. This indirect ownership is reported with an “I” ownership code and described as held “by 401(k) Plan.”