# EDGAR Filing Document

**Accession Number:** 0001587732
**File Stem:** 0001193125-26-057048
**Filing Date:** 2026-2
**Character Count:** 11050
**Document Hash:** 51b1c5f1dc2174612ec50a9b73352738
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-057048.hdr.sgml**: 20260218

**ACCESSION NUMBER**: 0001193125-26-057048

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 15

**CONFORMED PERIOD OF REPORT**: 20260218

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260218

**DATE AS OF CHANGE**: 20260218

**FILER**: 

**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

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36108
- **FILM NUMBER:** 26648336

**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

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934

#### (Date of report) February 18, 2026

#### (Date of earliest event reported) February 18, 2026

## ONE Gas, Inc.

#### (Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Oklahoma** | **001-36108** | **46-3561936** |
| **(State or Other Jurisdiction<br>of Incorporation)** | **(Commission**<br> **File Number)** | **(IRS Employer<br>Identification Number)** |

---

#### 15 East Fifth Street

#### Tulsa, OK 74103

#### (Address of principal executive offices) (Zip Code)

#### Registrant's Telephone Number, including area code (918) 947-7000
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading**<br> **symbol(s)** | **Name of each exchange<br>on which registered** |
| Common Stock, par value $0.01 per share | OGS | New York Stock Exchange |
| (indicate by check mark) |  |  |
|  |  | NYSE Texas |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

---

| | |
|:---|:---|
| **Item 5.02** | **<u>Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers</u>.**  |

---

On February 18, 2026, ONE Gas, Inc. (the "Company") announced that effective March 1, 2026, Curtis L. Dinan, 58, the Company's senior vice president and chief operating officer, will be promoted to the position of president and chief operating officer and Robert S. McAnnally, 62, the Company's president and chief executive officer will continue in the role of chief executive officer.

Mr. Dinan has served as the Company's senior vice president and chief operating officer since June 2021. He served as the Company's senior vice president and chief commercial officer from July 2020 to June 2021, as senior vice president, commercial from February 2019 to July 2020, and as senior vice president and chief financial officer from January 2014 to February 2019.

There were no material changes to the terms of Mr. McAnnally's employment in connection with the title change described above or to Mr. McAnnally's compensation. In connection with his promotion, effective March 1, 2026, Mr. Dinan's base salary will be increased to $600,000 and he will receive a short-term incentive award under the Company's short-term incentive program with a target opportunity of 75% of his base salary. The grant date value of Mr. Dinan's 2026 long-term equity incentive award will be $1,000,000 (comprised of 60% performance stock units and 40% restricted stock units). Messrs. McAnnally and Dinan each remain eligible to participate in the benefit plans described under the "*Executive Compensation Discussion and Analysis*" on pages 39 through 52 of the Company's Proxy Statement relating to its 2025 Annual Meeting of Shareholders, as filed with the United States Securities and Exchange Commission on April 2, 2025 (and such descriptions are incorporated herein by this reference).

There are no arrangements or understandings between Mr. Dinan any other person pursuant to which he was selected as an officer, and there are no family relationships between Mr. Dinan and any director or executive officer of the Company. Mr. Dinan has no direct or indirect interest in any transaction that would require disclosure under Item 404(a) of Regulation S-K.

---

| | |
|:---|:---|
| **Item 7.01** | **<u>Regulation FD Disclosure</u>**  |

---

On February 18, 2026, ONE Gas, Inc. (the "Company") announced that effective March 1, 2026, Curtis L. Dinan, 58, the Company's senior vice president and chief operating officer, will be promoted to the position of president and chief operating officer and Robert S. McAnnally, 62, the Company's president and chief executive officer will continue in the role of chief executive officer. A copy of the news release is attached as Exhibit 99.1 and is incorporated herein by reference.

The information disclosed in Item 7.01, including Exhibit 99.1, is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or other subject to the liabilities under that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act except as expressly set forth by specific reference in such filing.

------

---

| | |
|:---|:---|
| **Item 9.01** | **<u>Financial Statements and Exhibits</u>**  |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Exhibits

---

| | |
|:---|:---|
| Exhibit<br> Number | Description |
| 99.1 | [News release issued by ONE Gas, Inc. dated February 18, 2026.](d34190dex991.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

---

------

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused the report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | **ONE Gas, Inc.** | **ONE Gas, Inc.** |
|  | By: | /s/ Brian K. Shore |
| Date: February 18, 2026 |  | Brian K. Shore |
|  |  | Vice President, Associate General Counsel and<br> Secretary |

---

## Exhibit 99.1

**Exhibit 99.1** 

**ONE Gas Announces Leadership Progression – Dinan** 

**February 18, 2026** 

**Page 1** 

---

| | |
|:---|:---|
| ![LOGO](g34190dsp5a.jpg) | ![LOGO](g34190dsp5b.jpg)  |

---

---

| | | |
|:---|:---|:---|
| **Feb. 18, 2026** | **Analyst Contact:** | **Erin Dailey**<br> **918-947-7411** |
|  | **Media Contact:** | **Leah Harper**<br> **918-947-7123** |

---

**ONE Gas Announces Leadership Progression** 

**to Support Scaled Operations and Long-term Growth** 

TULSA, Okla. – Feb. 18, 2026 – ONE Gas, Inc. (NYSE: OGS) announced today that Curtis Dinan, senior vice president and chief operating officer, will be promoted to the position of president and chief operating officer effective March 1, 2026.

Robert S. McAnnally, president and chief executive officer, will continue in the role of chief executive officer, focusing on long-term strategy and value creation, stakeholder engagement and alignment across the organization.

"Curtis is a proven leader who has driven commercial transformation and outstanding operational results," said McAnnally. "As we meet growing demand in both our traditional customer base and new, larger load opportunities, this new role will strengthen our organization. Given his experience and the quality of his leadership, Curtis is the right leader to take on this new role."

In this role, Dinan will be responsible for the day-to-day operations of ONE Gas' natural gas distribution business divisions. He will continue to report to McAnnally.

"I appreciate the confidence and support from Sid and am honored to work alongside our leaders to safely serve customers and unlock the potential of opportunities before us," said Dinan.

Dinan has served as the Company's senior vice president and chief operating officer since June 2021. He served as the Company's senior vice president and chief commercial officer from July 2020 to June 2021, as senior vice president, commercial from February 2019 to July 2020, and as senior vice president and chief financial officer from January 2014 to February 2019.

------

**ONE Gas Announces Leadership Progression – Dinan** 

**February 18, 2026** 

 **Page 2** 

ONE Gas is committed to delivering reliable energy safely and affordably, creating long-term value for our shareholders, customers and communities. This change does not alter the company's strategy, regulatory commitments or financial outlook.

\# \# \#

**About ONE Gas, Inc.**

ONE Gas, Inc. (NYSE: OGS) is a 100-percent regulated natural gas utility, and trades on the New York Stock Exchange and NYSE Texas under the symbol "OGS." ONE Gas is included in the S&P MidCap 400 Index and is one of the largest natural gas utilities in the United States.

Headquartered in Tulsa, Oklahoma, ONE Gas provides a reliable and affordable energy choice to more than 2.3 million customers in Kansas, Oklahoma and Texas. Its divisions include Kansas Gas Service, the largest natural gas distributor in Kansas; Oklahoma Natural Gas, the largest in Oklahoma; and Texas Gas Service, the third largest in Texas, in terms of customers.

For more information and the latest news about ONE Gas, visit <u>onegas.com</u> and follow its social channels: <u>@ONEGas</u>, <u>Facebook</u>, <u>LinkedIn</u> and <u>YouTube</u>.

###