# EDGAR Filing Document

**Accession Number:** 0001587732
**File Stem:** 0001193125-25-226785
**Filing Date:** 2025-10
**Character Count:** 9699
**Document Hash:** 3953cdff9b6e0b7ec8431009a1377eda
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-226785.hdr.sgml**: 20251001

**ACCESSION NUMBER**: 0001193125-25-226785

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20251001

**FILED AS OF DATE**: 20251001

**DATE AS OF CHANGE**: 20251001

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Gregory Regina
- **CENTRAL INDEX KEY:** 0001682050

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36108
- **FILM NUMBER:** 251364797

**MAIL ADDRESS:**
- **STREET 1:** 15 EAST 5TH ST., 34TH FLOOR
- **CITY:** TULSA
- **STATE:** OK
- **ZIP:** 74103
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ONE Gas, Inc.
- **CENTRAL INDEX KEY:** 0001587732
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATURAL GAS DISTRIBUTION [4924]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 463561936
- **STATE OF INCORPORATION:** OK
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 15 EAST FIFTH STREET
- **CITY:** TULSA
- **STATE:** OK
- **ZIP:** 74103
- **BUSINESS PHONE:** 918-947-7000

**MAIL ADDRESS:**
- **STREET 1:** 15 EAST FIFTH STREET
- **CITY:** TULSA
- **STATE:** OK
- **ZIP:** 74103

## Ex-24

**POWER OF ATTORNEY**

KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and appoints Brian K. Shore, Vice President, Associate General Counsel and Secretary, and Stephanie McClanahan, Senior Paralegal, the undersigned's true and lawful attorneys-in-fact to:

(1) Execute for and on behalf of the undersigned, in the undersigned's capacity as an officer of ONE Gas, Inc. (the Corporation), Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;

(2) Do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Forms 3, 4, or 5 and timely file such form with the United States Securities and Exchange Commission and any stock exchange or similar authority;

(3) Take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorneys-in-fact, may be of benefit to, in the best interest of, or legally required by the undersigned, it being understood that the documents executed by such attorneys-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain the terms and conditions as such attorneys-in-fact may approve in such attorneys-in-fact's discretion.

The undersigned hereby grants to each such attorneys-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of revocation, hereby ratifying and confirming all that each such attorneys-in-fact shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that neither the Corporation nor the above-named individuals, in serving in such capacity at the request of the undersigned, are assuming any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.

The Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 with respect to the undersigned's holdings of and transactions in securities issued by the Corporation, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact. This Power of Attorney revokes all such special powers of attorney granted to individuals in the past to act on behalf of the undersigned for the purposes stated above.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 16<sup>th</sup> day of September 2025.

<u>/Regina L. Gregory/</u>   <br> Regina L. Gregory

**CONFIRMING STATEMENT**

This Statement confirms that the undersigned has authorized and designated Brian K. Shore, Vice President, Associate General Counsel and Secretary, and Stephanie E. McClanahan, Senior Paralegal, to execute and file on the undersigned's behalf all Forms 3, 4, and 5 (including any amendments thereto) that the undersigned may be required to file with the United States Securities and Exchange Commission as a result of the undersigned's ownership of or transactions in securities of ONE Gas, Inc. The authority of the above-named individuals under this Statement shall continue until the undersigned is no longer required to file Forms 3, 4, or 5 with regard to the undersigned's ownership of or transactions in securities of ONE Gas, Inc. unless earlier revoked in writing. This Statement revokes all such special powers of attorney granted to individuals in the past to act on behalf of the undersigned for the purposes stated above. The undersigned acknowledges that neither ONE Gas, Inc. nor the above-named individuals are assuming any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.

<u>/Regina L. Gregory/</u>   <br> Regina L. Gregory

Dated: September 16, 2025

------

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Gregory Regina<br><sub>(Last) (First) (Middle)</sub><br>15 EAST 5TH STREET<br><sub>(Street)</sub><br>TULSA, OK 74103<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>ONE Gas, Inc. [ OGS ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-10-01 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_See Remarks_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Performance Units 2025 | <sup>(1)</sup> | <sup>(1)</sup> | Common stock, par value $0.01 | 3700 | <sup>(1)</sup> | D |  |
| Restricted Units 2025 | <sup>(2)</sup> | <sup>(2)</sup> | Common stock, par value $0.01 | 2466 | <sup>(2)</sup> | D |  |

---

### Footnotes:

(1) Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The performance unit award vests on February 19, 2028, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total stockholder return compared to total stockholder return of a selected peer group. During the 3-year vesting period, the award will be credited with dividend equivalents that will be paid out in shares of common stock at the time the underlying units vest and shares are issued. The award and credited dividend equivalents will be payable one share of the Issuer's common stock for each vested performance unit and dividend equivalent.

(2) Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The restricted unit award vests on February 19, 2028. During the 3-year vesting period, the award will be credited with dividend equivalents that will be paid out in shares of common stock at the time the underlying units vest and are issued. The award and credited dividend equivalents will be payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent.

**Remarks:**
Senior Vice President, General Counsel and Assistant Secretary

**Signature:** /s/ Brian K. Shore, Attorney-in-Fact for Regina L. Gregory  
**Date:** 2025-10-01

### Remarks:

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.**