# EDGAR Filing Document

**Accession Number:** 0001587732
**File Stem:** 0001587732-26-000006
**Filing Date:** 2026-2
**Character Count:** 57058
**Document Hash:** f8e137c3767b95e6e15a011c04d09276
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001587732-26-000006.hdr.sgml**: 20260218

**ACCESSION NUMBER**: 0001587732-26-000006

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20260218

**ITEM INFORMATION**: Results of Operations and Financial Condition

**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:** 26648665

**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'? ogs-20260218

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

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| | |
|:---|:---|
| (Date of report) | **February 18, 2026** |
| (Date of earliest event reported) | **February 18, 2026** |

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**ONE Gas, Inc.**

(Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Oklahoma** | **001-36108** | **46-3561936** |
| (State or other jurisdiction | (Commission | (IRS Employer |
| of incorporation) | File Number) | Identification No.) |

---

**15 East Fifth Street; Tulsa, OK** 

(Address of principal executive offices)

**74103** 

(Zip code)

**(918) 947-7000** 

(Registrant's telephone number, including area code)

**Not Applicable**

(Former name or former address, if changed since last report)

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 communication 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:**

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol** | **Name of each exchange on which registered** |
| Common Stock, par value $0.01 per share | OGS | New York Stock Exchange |
| Common Stock, par value $0.01 per share | OGS | 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 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

☐ 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. ☐

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| | | |
|:---|:---|:---|
| The information disclosed in Items 2.02 and 7.01, including Exhibit 99.1 hereto, 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 otherwise 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. | The information disclosed in Items 2.02 and 7.01, including Exhibit 99.1 hereto, 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 otherwise 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. | The information disclosed in Items 2.02 and 7.01, including Exhibit 99.1 hereto, 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 otherwise 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. |
| <u>Item 2.02</u> |  | <u>Results of Operations and Financial Condition</u> |
|  |  | On February 18, 2026, we announced our results of operations for the fourth quarter and year ended December 31, 2025. The news release is furnished as Exhibit 99.1 and incorporated by reference herein. |
| <u>Item 7.01</u> |  | <u>Regulation FD Disclosure</u> |
|  |  | On February 18, 2026, we announced our results of operations for the fourth quarter and year ended December 31, 2025. The news release is furnished as Exhibit 99.1 and is incorporated by reference herein. |
| <u>Item 9.01</u> |  | <u>Financial Statements and Exhibits</u> |
|  | (d) | <u>Exhibits</u> |
| <u>Exhibit<br>Number</u> |  | <u>Description</u> |
| 99.1 |  | <u>[News release issued by ONE Gas, Inc. dated](ogs12312025earningsrelease.htm)[February](ogs12312025earningsrelease.htm)[18](ogs12312025earningsrelease.htm)[, 202](ogs12312025earningsrelease.htm)[6](ogs12312025earningsrelease.htm)[.](ogs12312025earningsrelease.htm)</u> |
| 104 |  | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

---

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SIGNATURE

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

---

| | | | |
|:---|:---|:---|:---|
| | | | ONE Gas, Inc. |
| Date: | February 18, 2026 | By: | <u>/s/ Christopher P. Sighinolfi</u> |
|  |  |  | Christopher P. Sighinolfi<br>Senior Vice President and <br>Chief Financial Officer |

---

## Exhibit 99.1

**Exhibit 99.1**

![logoletterheadb27.jpg](logoletterheadb27.jpg)

---

| | | |
|:---|:---|:---|
| **February 18, 2026** | **Analyst Contact:** | **Erin Dailey<br>918-947-7441** |
| | **Media Contact:** | **Leah Harper<br>918-947-7123** |

---

**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results; Releases Non-GAAP Adjusted Financial Guidance**

***Analyst call and webcast scheduled tomorrow, Feb. 19 at 11 a.m. EST***

TULSA, Okla. - Feb 18, 2026 - ONE Gas, Inc. (NYSE: OGS) today announced its fourth quarter and full year 2025 financial results, which include diluted earnings per share of $1.42 and $4.37, respectively. The Company also provided non-GAAP adjustments to both earnings and its 2026 financial guidance to capture the full impact of a regulatory mechanism intended to mitigate regulatory lag. Adjusted net income was $1.48 per diluted share for the fourth quarter, and $4.48 per diluted share for the full year 2025. For 2026, non-GAAP earnings are expected to range from $306 million to $314 million, or $4.83 to $4.95 per diluted share.

"Our team delivered strong operational and financial results in 2025, reflecting disciplined execution and a commitment to safely serving our communities," said Robert S. McAnnally, president and chief executive officer. "Looking ahead, we see meaningful opportunity in both residential and large-load growth, supporting long-term value creation and affordability for our customers."

**<u>FINANCIAL RESULTS & HIGHLIGHTS</u>**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**•** Fourth quarter 2025 net income was $86.3 million, or $1.42 per diluted share, compared with $77.0 million, or $1.34 per diluted share, in the same period last year;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**•** Fourth quarter 2025 adjusted net income was $89.7 million, or $1.48 per diluted share, compared with $77.5 million, or $1.35 per diluted share, in the same period last year;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Full year 2025 net income was $264.2 million, or $4.37 per diluted share, compared with $222.9 million, or $3.91 per diluted share, in 2024;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Full year 2025 adjusted net income was $271.0 million, or $4.48 per diluted share, compared with $224.8 million, or $3.94 per diluted share, in 2024;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• In December, the Company settled 2,633,700 million shares of our common stock under forward contracts for net proceeds of $205.0 million;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Full year 2025 capital expenditures and asset removal costs were $759.5 million compared with $762.1 million in 2024; and

**-more-**

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 2**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• On Jan. 20, 2026, ONE Gas increased the dividend for the first quarter 2026 by 1 cent to $0.68 per share ($2.72 annualized), payable March 6, 2026, to shareholders of record at the close of business Feb. 20, 2026.

**<u>FOURTH QUARTER 2025 FINANCIAL PERFORMANCE</u>**

ONE Gas reported operating income of $139.7 million in the fourth quarter, compared with $124.3 million in the fourth quarter 2024, which primarily reflects:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $23.8 million from new rates; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $1.3 million in residential sales due primarily to net customer growth in Oklahoma and Texas.

The increases were partially offset by:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $4.2 million in employee-related costs, due in part to annual salary increases implemented during the quarter;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $3.8 million in depreciation and amortization expense primarily from additional capital investment; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $3.3 million due to outside services, due in part to our decision to execute some projects earlier than initially planned.

Weather was 22.7 percent warmer than normal for the three months ended Dec. 31, 2025. The impact on operating income was mitigated by weather normalization mechanisms.

Excluding interest related to KGSS-I securitized bonds, net interest expense decreased $2.9 million for the three months ending Dec. 31, 2025. The decrease in interest expense is due primarily to commercial paper borrowings at lower rates and the implementation of Texas House Bill 4384.

Income tax expense includes a credit for amortization of the regulatory liability associated with excess deferred income taxes (EDIT) of $5.6 million and $12.3 million for the three months ended Dec. 31, 2025, and 2024, respectively.

Capital expenditures and asset removal costs were $184.1 million for the fourth quarter 2025 compared with $190.4 million in the same period last year, primarily representing expenditures for system integrity and extension of service to new areas.

**<u>FULL YEAR 2025 FINANCIAL PERFORMANCE</u>**

Operating income for the twelve-month 2025 period was $457.5 million, compared with $399.0 million in 2024, which primarily reflects:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $116.0 million from new rates; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $6.6 million in residential sales due primarily to net customer growth in all three states.

**-more-**

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 3**

These increases were partially offset by:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $20.6 million in depreciation expense due to additional capital expenditures being placed in service;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $17.0 million in employee-related costs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an increase of $14.7 million in ad-valorem taxes; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• a carrying charge of $2.9 million refunded to Oklahoma customers from the settlement of a disputed gas purchase invoice.

Excluding interest related to KGSS-I securitized bonds, net interest expense decreased $3.0 million for the twelve months ended Dec. 31, 2025. The decrease in interest expense is due primarily to commercial paper borrowings at lower rates and the implementation of Texas House Bill 4384.

Income tax expense includes a credit for amortization of the regulatory liability associated with EDIT of $17.6 million and $25.7 million for the twelve months ended Dec. 31, 2025, and 2024, respectively.

Capital expenditures and asset removal costs were $759.5 million for the twelve-month 2025 period compared with $762.1 million in the same period last year.

In December, the Company settled 2,633,700 million shares of our common stock under forward contracts for net proceeds of $205.0 million.

**<u>REGULATORY ACTIVITIES UPDATE</u>**

In June 2025, Texas Gas Service filed a rate case for customers in the Central-Gulf, West-North, and Rio Grande Valley service areas. The Railroad Commission of Texas ultimately approved a $14.4 million revenue increase and the consolidation of all service areas into a single division, based on a 59.9% equity ratio and a 9.8% ROE. New rates became effective January 27, 2026.

**<u>2026 FINANCIAL GUIDANCE</u>**

On Dec. 1, 2025, ONE Gas announced that its 2026 net income is expected to be in the range of $294 million to $302 million, with earnings per diluted share of $4.65 to $4.77.

The Company expects 2026 adjusted net income to be in the range of $306 million to $314 million, with adjusted net income per diluted share of $4.83 to $4.95.

ONE Gas expects long-term adjusted net income growth of 7 to 9 percent and adjusted net income per diluted share growth of 5 to 7 percent, consistent with its established five-year financial outlook. These growth rates are based on adjusted 2025 actual results, including adjusted net income of $271 million and adjusted net income per diluted share of $4.48.

Capital investments, including asset removal costs, are expected to be approximately $800 million in 2026, primarily targeted for system integrity and replacement projects. Capital investments for extensions to new customers are expected to be approximately $230 million of the $800 million.

**-more-**

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 4**

**<u>EARNINGS CONFERENCE CALL AND WEBCAST</u>**

The ONE Gas executive management team will host a conference call on Thursday, February 19, 2026, at 11 a.m. Eastern Standard Time (10 a.m. Central Standard Time). The call also will be carried live on the ONE Gas website.

To participate in the telephone conference call, dial 833-470-1428, passcode 246604, or log on to <u>www.onegas.com/investors</u> and select Events and Presentations.

If you are unable to participate in the conference call or the webcast, a replay will be available on the ONE Gas website, <u>www.onegas.com</u>, for 30 days. A recording will be available by phone for seven days. The playback call may be accessed at 866-813-9403, passcode 437369.

**<u>NON-GAAP DISCLOSURE STATEMENT</u>**

This press release includes financial results and guidance for ONE Gas with respect to adjusted net income and adjusted net income per share, which are non-GAAP financial measures as defined by the Securities and Exchange Commission. Adjusted net income and adjusted net income per share are calculated as GAAP net income plus the deferral of an equity portion of a carrying cost attributable to shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes. These carrying costs relate to property, plant and equipment that has been placed in service, but not yet reflected in base rates. Adjusted net income and adjusted net income per share should not be considered in isolation or as a substitute for GAAP net income or GAAP earnings per share.

Management believes these non-GAAP measures provide useful information because they offer a more complete view of our overall regulatory economics, reflect the period-specific effects of certain regulatory mechanisms designed to mitigate regulatory lag associated with property, plant and equipment placed in service prior to regulatory action, and reflect the impact of regulatory timing differences that arise under the Company's rate-setting framework. These adjustments, net of applicable tax effects, are expected to recur as a result of the Company's regulatory framework and are a consistent part of our earnings profile. A reconciliation of the Company's GAAP net income and GAAP earnings per share to adjusted net income and adjusted net income per share is provided in the Appendix.

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ONE Gas, Inc. (NYSE: OGS) is a 100% regulated natural gas utility, and trades on the New York Stock Exchange and the 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>.

Some of the statements contained and incorporated in this news release are forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act. The forward-looking statements relate

**-more-**

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 5**

to our anticipated financial performance, liquidity, management's plans and objectives for our future operations, our business prospects, the outcome of regulatory and legal proceedings, market conditions and other matters. We make these forward-looking statements in reliance on the safe harbor protections provided under the Private Securities Litigation Reform Act of 1995. The following discussion is intended to identify important factors that could cause future outcomes to differ materially from those set forth in the forward-looking statements.

Forward-looking statements include the items identified in the preceding paragraph, the information concerning possible or assumed future results of our operations and other statements contained or incorporated in this news release identified by words such as "anticipate," "estimate," "expect," "project," "intend," "plan," "believe," "should," "goal," "forecast," "guidance," "could," "may," "continue," "might," "potential," "scheduled," "likely," and other words and terms of similar meaning.

One should not place undue reliance on forward-looking statements, which are applicable only as of the date of this news release. Known and unknown risks, uncertainties and other factors may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by forward-looking statements. Those factors may affect our operations, costs, liquidity, markets, products, services and prices. In addition to any assumptions and other factors referred to specifically in connection with the forward-looking statements, factors that could cause our actual results to differ materially from those contemplated in any forward-looking statement include, among others, the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to recover costs, income taxes and amounts equivalent to the cost of property, plant and equipment, regulatory assets and our allowed rate of return in our regulated rates or other recovery mechanisms;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• cyber-attacks, which, according to experts, continue to increase in volume and sophistication, or breaches of technology systems that could disrupt our operations or result in the loss or exposure of confidential or sensitive customer, employee, vendor, counterparty, or Company information; further, increased remote working arrangements have required enhancements and modifications to our information technology infrastructure (e.g. Internet, Virtual Private Network, remote collaboration systems, etc.), and any failures of the technologies, including third-party service providers, that facilitate working remotely could limit our ability to conduct ordinary operations or expose us to increased risk or effect of an attack;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to manage our operations and maintenance costs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• changes in regulation of natural gas distribution services, particularly those in Oklahoma, Kansas and Texas;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the economic climate and, particularly, its effect on the natural gas requirements of our residential and commercial customers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the length and severity of a pandemic or other health crisis which could significantly disrupt or prevent us from operating our business in the ordinary course for an extended period;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• competition from alternative forms of energy, including, but not limited to, electricity, solar power, wind power, geothermal energy and biofuels;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• adverse weather conditions and variations in weather, including seasonal effects on demand and/or supply, the occurrence of severe storms in the territories in which we operate, climate change, and the related effects on supply, demand, and costs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• indebtedness could make us more vulnerable to general adverse economic and industry conditions, limit our ability to borrow additional funds and/or place us at competitive disadvantage compared with competitors;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to secure reliable, competitively priced and flexible natural gas transportation, storage, and supply, including decisions by natural gas producers to reduce production or shut-in producing natural gas wells and expiration of existing supply and transportation and storage arrangements that are not replaced with contracts with similar terms and pricing;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to complete necessary or desirable expansion or infrastructure development projects, which may delay or prevent us from serving our customers or expanding our business;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• operational and mechanical hazards or interruptions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• adverse labor relations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the effectiveness of our strategies to reduce earnings lag, revenue protection strategies and risk mitigation strategies, which may be affected by risks beyond our control such as commodity price volatility, counterparty performance or creditworthiness and interest rate risk;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the capital-intensive nature of our business, and the availability of and access to, in general, funds to meet our debt obligations prior to or when they become due and to fund our operations and capital expenditures, either through (i) cash on hand, (ii) operating cash flow, or (iii) access to the capital markets and other sources of liquidity;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to obtain capital on commercially reasonable terms, or on terms acceptable to us, or at all;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• limitations on our operating flexibility, earnings and cash flows due to restrictions in our financing arrangements;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• cross-default provisions in our borrowing arrangements, which may lead to our inability to satisfy all of our outstanding obligations in the event of a default on our part;

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 6**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• changes in the financial markets during the periods covered by the forward-looking statements, particularly those affecting the availability of capital and our ability to refinance existing debt and fund investments and acquisitions to execute our business strategy;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• actions of rating agencies, including the ratings of debt, general corporate ratings and changes in the rating agencies' ratings criteria;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• changes in inflation and interest rates;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to recover the costs of upstream transportation, storage, and natural gas purchased for our customers and any related financing required to support our purchase of natural gas supply;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• impact of potential impairment charges;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• volatility and changes in markets for natural gas and our ability to secure additional and sufficient liquidity on reasonable commercial terms to cover costs associated with such volatility;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• possible loss of local distribution company franchises or other adverse effects caused by the actions of municipalities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• payment and performance by counterparties and customers as contracted and when due, including our counterparties maintaining ordinary course terms of supply and payments;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• changes in existing or the addition of new environmental, safety, tax, cybersecurity and other laws or regulations to which we and our subsidiaries are subject, including those that may require significant expenditures, significant increases in operating costs or, in the case of noncompliance, substantial fines or penalties;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the effectiveness of our risk-management policies and procedures, and employees violating our risk-management policies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the uncertainty of estimates, including accruals and costs of environmental remediation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• advances in technology, including technologies that increase efficiency or that improve electricity's competitive position relative to natural gas;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• population growth rates and changes in the demographic patterns of the markets we serve in Oklahoma, Kansas and Texas, and economic conditions in these areas;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• acts of nature and naturally occurring disasters;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• political unrest and the potential effects of threatened or actual terrorism and war;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the sufficiency of insurance coverage to cover losses;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the effects of our strategies to reduce tax payments;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• changes in accounting standards;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• changes in corporate governance standards;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• existence of material weaknesses in our internal controls;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to comply with all covenants in our indentures and the ONE Gas Credit Agreement, a violation of which, if not cured in a timely manner, could trigger a default of our obligations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to attract and retain talented employees, management and directors, and shortage of skilled-labor;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• unexpected increases in the costs of providing health care benefits, along with pension and postemployment health care benefits, as well as declines in the discount rates on, declines in the market value of the debt and equity securities of, and increases in funding requirements for, our defined benefit plans; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• our ability to successfully complete merger, acquisition or divestiture plans, regulatory or other limitations imposed as a result of a merger, acquisition or divestiture, and the success of the business following a merger, acquisition or divestiture.

These factors are not necessarily all of the important factors that could cause actual results to differ materially from those expressed in any of our forward-looking statements. Other factors could also have material adverse effects on our future results. These and other risks are described in greater detail in Part 1, Item 1A, Risk Factors, in our Annual Report. All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by these factors. Other than as required under securities laws, we undertake no obligation to update publicly any forward-looking statement whether as a result of new information, subsequent events or change in circumstances, expectations or otherwise.

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 7**

**<u>APPENDIX</u>**

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|:---|:---|:---|:---|:---|
| **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** |
| **CONSOLIDATED STATEMENTS OF INCOME** | **CONSOLIDATED STATEMENTS OF INCOME** | **CONSOLIDATED STATEMENTS OF INCOME** | **CONSOLIDATED STATEMENTS OF INCOME** | **CONSOLIDATED STATEMENTS OF INCOME** |
| | **Three Months Ended** | **Three Months Ended** | **Twelve Months Ended** | **Twelve Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
|  | (*Thousands of dollars, except per share amounts*) | (*Thousands of dollars, except per share amounts*) | (*Thousands of dollars, except per share amounts*) | (*Thousands of dollars, except per share amounts*) |
| **Total revenues** | $**689372** | $630703 | $**2427428** | $2083558 |
| **Cost of natural gas** | **291895** | 263740 | **998913** | 778333 |
| **Operating expenses** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Operations and maintenance | **155017** | 144853 | **558497** | 530256 |
| &nbsp;&nbsp;&nbsp;Depreciation and amortization | **79305** | 75452 | **317256** | 296699 |
| &nbsp;&nbsp;&nbsp;General taxes | **23423** | 22348 | **95295** | 79371 |
| Total operating expenses | **257745** | 242653 | **971048** | 906326 |
| **Operating income** | **139732** | 124310 | **457467** | 398899 |
| Other income, net | **1348** | 105 | **6801** | 7572 |
| Interest expense, net | **(36460)** | (39760) | **(142809)** | (147235) |
| Income before income taxes | **104620** | 84655 | **321459** | 259236 |
| Income taxes | **(18314)** | (7633) | **(57235)** | (36386) |
| **Net income** | $**86306** | $77022 | $**264224** | $222850 |
| Earnings per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Basic | $**1.43** | $1.35 | $**4.39** | $3.92 |
| &nbsp;&nbsp;&nbsp;Diluted | $**1.42** | $1.34 | $**4.37** | $3.91 |
| Average shares (*thousands*) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Basic | **60272** | 57000 | **60161** | 56826 |
| &nbsp;&nbsp;&nbsp;Diluted | **60777** | 57415 | **60513** | 57033 |
| Dividends declared per share of stock | $**0.67** | $0.66 | $**2.68** | $2.64 |

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------

**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 8**

**<u>APPENDIX</u>**

---

| | | |
|:---|:---|:---|
| **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** |
| **CONSOLIDATED BALANCE SHEETS** | **CONSOLIDATED BALANCE SHEETS** | **CONSOLIDATED BALANCE SHEETS** |
| | **December 31,** | **December 31,** |
| | **2025** | **2024** |
| **Assets** | (*Thousands of dollars*) | (*Thousands of dollars*) |
| **Property, plant and equipment** |  |  |
| &nbsp;&nbsp;&nbsp;Property, plant and equipment | $**9734150** | $9124134 |
| &nbsp;&nbsp;&nbsp;Accumulated depreciation and amortization | **2611952** | 2478261 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net property, plant and equipment | **7122198** | 6645873 |
| **Current assets** |  |  |
| &nbsp;&nbsp;&nbsp;Cash and cash equivalents | **10620** | 57995 |
| &nbsp;&nbsp;&nbsp;Restricted cash and cash equivalents | **23107** | 20542 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total cash, cash equivalents and restricted cash and cash equivalents | **33727** | 78537 |
| &nbsp;&nbsp;&nbsp;Accounts receivable, net | **461631** | 408448 |
| &nbsp;&nbsp;&nbsp;Materials and supplies | **97595** | 91662 |
| &nbsp;&nbsp;&nbsp;Income tax receivable | **55552** | 53624 |
| &nbsp;&nbsp;&nbsp;Natural gas in storage | **176451** | 161184 |
| &nbsp;&nbsp;&nbsp;Regulatory assets | **49504** | 101210 |
| &nbsp;&nbsp;&nbsp;Other current assets | **41424** | 35216 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total current assets | **915884** | 929881 |
| **Goodwill and other assets** |  |  |
| &nbsp;&nbsp;&nbsp;Regulatory assets | **256225** | 278006 |
| &nbsp;&nbsp;&nbsp;Securitized intangible asset, net | **233786** | 265951 |
| &nbsp;&nbsp;&nbsp;Goodwill | **157953** | 157953 |
| &nbsp;&nbsp;&nbsp;Pension and other postemployment benefits | **47012** | 42882 |
| &nbsp;&nbsp;&nbsp;Other assets | **120026** | 105025 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total goodwill and other assets | **815002** | 849817 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets | $**8853084** | $8425571 |

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 9**

**<u>APPENDIX</u>**

---

| | | |
|:---|:---|:---|
| **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** |
| **CONSOLIDATED BALANCE SHEETS** | **CONSOLIDATED BALANCE SHEETS** | **CONSOLIDATED BALANCE SHEETS** |
| **(Continued)** | **(Continued)** | **(Continued)** |
| | **December 31,** | **December 31,** |
| | **2025** | **2024** |
| **Equity and Liabilities** | (*Thousands of dollars*) | (*Thousands of dollars*) |
| **Equity and long-term debt** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Common stock, $0.01 par value:<br>authorized 250,000,000 shares; issued and outstanding 62,692,392 shares at December 31, 2025; issued and outstanding 59,876,861 shares at December 31, 2024 | $**627** | $599 |
| &nbsp;&nbsp;&nbsp;Paid-in capital | **2530137** | 2294469 |
| &nbsp;&nbsp;&nbsp;Retained earnings | **909355** | 809606 |
| &nbsp;&nbsp;&nbsp;Accumulated other comprehensive income (loss) | **4** | (126) |
| &nbsp;&nbsp;&nbsp;Total equity | **3440123** | 3104548 |
| &nbsp;&nbsp;&nbsp;Other long-term debt, excluding current maturities, net of issuance costs | **2133018** | 2131718 |
| &nbsp;&nbsp;&nbsp;Securitized utility tariff bonds, excluding current maturities, net of issuance costs | **223020** | 253568 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total long-term debt, excluding current maturities, net of issuance costs | **2356038** | 2385286 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total equity and long-term debt | **5796161** | 5489834 |
| **Current liabilities** |  |  |
| &nbsp;&nbsp;&nbsp;Current maturities of other long-term debt, net of issuance costs | **249674** | 14 |
| &nbsp;&nbsp;&nbsp;Current maturities of securitized utility tariff bonds, net of issuance costs | **30566** | 28956 |
| &nbsp;&nbsp;&nbsp;Notes payable | **737400** | 914600 |
| &nbsp;&nbsp;&nbsp;Accounts payable | **222102** | 261321 |
| &nbsp;&nbsp;&nbsp;Accrued taxes other than income | **75568** | 75608 |
| &nbsp;&nbsp;&nbsp;Regulatory liabilities | **57277** | 22525 |
| &nbsp;&nbsp;&nbsp;Customer deposits | **52871** | 56243 |
| &nbsp;&nbsp;&nbsp;Other current liabilities | **106400** | 99009 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | **1531858** | 1458276 |
| **Deferred credits and other liabilities** |  |  |
| &nbsp;&nbsp;&nbsp;Deferred income taxes | **963874** | 891738 |
| &nbsp;&nbsp;&nbsp;Regulatory liabilities | **451620** | 467563 |
| &nbsp;&nbsp;&nbsp;Other deferred credits | **109571** | 118160 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total deferred credits and other liabilities | **1525065** | 1477461 |
| **Commitments and contingencies** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and equity | $**8853084** | $8425571 |

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 10**

**<u>APPENDIX</u>**

---

| | | |
|:---|:---|:---|
| **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** |
| **CONSOLIDATED STATEMENTS OF CASH FLOWS** | **CONSOLIDATED STATEMENTS OF CASH FLOWS** | **CONSOLIDATED STATEMENTS OF CASH FLOWS** |
| | **Year Ended December 31,** | **Year Ended December 31,** |
| | **2025** | **2024** |
|  | (*Thousands of dollars*) | (*Thousands of dollars*) |
| **Operating activities** |  |  |
| &nbsp;&nbsp;&nbsp;Net income | $**264224** | $222850 |
| &nbsp;&nbsp;&nbsp;Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation and amortization | **317256** | 296699 |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred income taxes | **49507** | 106522 |
| &nbsp;&nbsp;&nbsp;&nbsp;Share-based compensation expense | **14791** | 13733 |
| &nbsp;&nbsp;&nbsp;&nbsp;Provision for doubtful accounts | **8207** | 6705 |
| &nbsp;&nbsp;&nbsp;&nbsp;Proceeds from government securitization of winter weather event costs | **—** |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Changes in assets and liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable | **(61390)** | (67289) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Materials and supplies | **(5933)** | (14013) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income tax receivable | **(1928)** | (49677) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Natural gas in storage | **(15267)** | 25913 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Asset removal costs | **(52268)** | (58952) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | **(35397)** | (15014) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accrued taxes other than income | **(40)** | 6815 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Customer deposits | **(3372)** | (5944) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Regulatory assets and liabilities - current | **68397** | (90829) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Regulatory assets and liabilities - noncurrent | **36660** | 19354 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other assets and liabilities - current | **(708)** | (17091) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other assets and liabilities - noncurrent | **(3906)** | (11371) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash provided by operating activities | **578833** | 368411 |
| **Investing activities** |  |  |
| &nbsp;&nbsp;&nbsp;Capital expenditures | **(707226)** | (703165) |
| &nbsp;&nbsp;&nbsp;Other investing expenditures | **(12724)** | (10402) |
| &nbsp;&nbsp;&nbsp;Other investing receipts | **4626** | 6072 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash used in investing activities | **(715324)** | (707495) |
| **Financing activities** |  |  |
| &nbsp;&nbsp;Borrowings (repayments) of notes payable, net | **(177200)** | 826100 |
| &nbsp;&nbsp;&nbsp;Issuance of other long-term debt, net of premiums and discounts | **250000** | 253467 |
| &nbsp;&nbsp;&nbsp;Long-term debt financing costs | **(432)** | (2193) |
| &nbsp;&nbsp;&nbsp;Repayment of other long-term debt | **(15)** | (773013) |
| &nbsp;&nbsp;&nbsp;Repayment of securitized utility tariff bonds | **(29493)** | (27939) |
| &nbsp;&nbsp;&nbsp;Issuance of common stock | **212183** | 252379 |
| &nbsp;&nbsp;&nbsp;Dividends paid | **(160705)** | (149456) |
| &nbsp;&nbsp;&nbsp;Tax withholdings related to net share settlements of stock compensation | **(2657)** | (1111) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash provided by financing activities | **91681** | 378234 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Change in cash, cash equivalents, restricted cash and restricted cash equivalents | **(44810)** | 39150 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period | **78537** | 39387 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period | $**33727** | $78537 |
| &nbsp;&nbsp;&nbsp;Supplemental cash flow information: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash paid for interest, net of amounts capitalized | $**138987** | $148987 |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash paid for other state income taxes | $**540** | $366 |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash received for state income taxes | $**(1523)** | $(4546) |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash paid (received) for federal income taxes | $**10113** | $(16280) |

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 11**

**<u>APPENDIX</u>**

The following table reconciles the Company's GAAP net income and GAAP earnings per share to adjusted net income and adjusted net income per share:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** |
| | **Three Months Ended** | **Three Months Ended** | **Twelve Months Ended** | **Twelve Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
|  | (*Thousands of dollars, except per share amounts*) | (*Thousands of dollars, except per share amounts*) | (*Thousands of dollars, except per share amounts*) | (*Thousands of dollars, except per share amounts*) |
| **Net income - GAAP** | $**86306** | $77022 | $**264224** | $222850 |
| &nbsp;&nbsp;Other income - deferred carrying cost<sup>(a)</sup> | **3359** | 458 | **6745** | 1986 |
| &nbsp;&nbsp;&nbsp;Income taxes | **—** |  | **—** |  |
| Adjusted net income - non-GAAP | $**89665** | $77480 | $**270969** | $224836 |
| **Earnings per share - GAAP** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic | $**1.43** | $1.35 | $**4.39** | $3.92 |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted | $**1.42** | $1.34 | $**4.37** | $3.91 |
| Adjusted net income per share - non-GAAP |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic | $**1.49** | $1.36 | $**4.50** | $3.96 |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted | $**1.48** | $1.35 | $**4.48** | $3.94 |
| Average shares *(thousands)* |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic | **60272** | 57000 | **60161** | 56826 |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted | **60777** | 57415 | **60513** | 57033 |
| (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. | (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. | (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. | (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. | (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. |

---

---

| | | | |
|:---|:---|:---|:---|
| **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** |
| 2026 Financial Guidance: Reconciliation of non-GAAP to GAAP: | 2026 Financial Guidance: Reconciliation of non-GAAP to GAAP: | 2026 Financial Guidance: Reconciliation of non-GAAP to GAAP: | 2026 Financial Guidance: Reconciliation of non-GAAP to GAAP: |
|  | **Low** | **Mid** | **High** |
|  | (*Thousands of dollars, except per share amounts*) | (*Thousands of dollars, except per share amounts*) | (*Thousands of dollars, except per share amounts*) |
| **Net income - GAAP** | $**294000** | $**298000** | $**302000** |
| &nbsp;&nbsp;Other income - deferred carrying cost<sup>(a)</sup> | 11890 | 11919 | 12000 |
| &nbsp;&nbsp;&nbsp;Income taxes |  |  |  |
| Adjusted net income - non-GAAP | $305890 | $309919 | $314000 |
| **Earnings per share - GAAP** |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic | $**4.67** | $**4.73** | $**4.79** |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted | $**4.65** | $**4.71** | $**4.77** |
| Adjusted net income per share - non-GAAP |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic | $4.86 | $4.92 | $4.98 |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted | $4.83 | $4.89 | $4.95 |
| Average shares *(thousands)* |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic | 62995 | 62995 | 62995 |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted | 63350 | 63350 | 63350 |
| (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. | (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. | (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. | (a) The allowance for earnings on shareholders' investment capitalized for regulatory purposes but not for financial reporting purposes applied to property, plant and equipment placed in service, but not yet reflected in base rates as authorized by our regulators or state law. This increases book income but is non-taxable, creating a permanent tax difference. |

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 12**

**<u>APPENDIX</u>**

**ONE Gas, Inc.**

**KGSS-I SECURITIZATION**

In November 2022, Kansas Gas Service Securitization I, L.L.C. (KGSS-I) issued $336 million of securitized utility tariff bonds. KGSS-I used the proceeds from the issuance to purchase the Securitized Utility Tariff Property from Kansas Gas Service, pay for debt issuance costs, and reimburse Kansas Gas Service for upfront securitization costs paid on behalf of KGSS-I.

Revenues for the three months ended December 31, 2025, include $11.4 million associated with KGSS-I, which is offset by $7.8 million in operating and amortization expense and $3.6 million in interest expense, net. Compared to the same three month period last year, revenues increased $0.7 million and interest expense, net, decreased $0.4 million , offset by a $1.1 million increase in operating and amortization expense.

Revenues for the twelve months ended December 31, 2025, include $47.4 million associated with KGSS-I, which is offset by $32.6 million in operating and amortization expense and $14.7 million in interest expense, net. Compared to the same twelve month period last year, revenues increased $3.1 million and interest expense, net, decreased $1.5 million, offset by a $4.5 million increase in amortization and operating expense.

The following table summarizes the impact of KGSS-I on the consolidated balance sheets, for the periods indicated:

---

| | | |
|:---|:---|:---|
| | **December 31,**<br>**2025** | **December 31,**<br>**2024** |
|  | *(Thousands of dollars)* | *(Thousands of dollars)* |
| Restricted cash and cash equivalents | $**23107** | $20542 |
| Accounts receivable | **4463** | 4659 |
| Securitized intangible asset, net | **233786** | 265951 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets | $**261356** | $291152 |
| Current maturities of securitized utility tariff bonds, net of issuance costs | $**30566** | $28956 |
| Accounts payable | **136** | 319 |
| Accrued interest | **5894** | 6568 |
| Securitized utility tariff bonds, excluding current maturities, net of discounts and issuance costs $4.3 million and $4.8 million, as of December 31, 2025 and December 31, 2024, respectively | **223020** | 253568 |
| Paid-in capital | **1680** | 1681 |
| Retained earnings | **60** | 60 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and equity | $**261356** | $291152 |

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 13**

The following table summarizes the impact of KGSS-I on the consolidated statements of income, for the periods indicated:

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Year Ended** | **Year Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
|  | *(Thousands of dollars)* | *(Thousands of dollars)* | *(Thousands of dollars)* | *(Thousands of dollars)* |
| Operating revenues | $**11387** | $10649 | $**47446** | $44390 |
| Operating expense | **(110)** | (111) | **(442)** | (443) |
| Amortization expense | **(7688)** | (6559) | **(32164)** | (27668) |
| Interest income | **125** | 132 | **551** | 671 |
| Interest expense | **(3678)** | (4075) | **(15246)** | (16806) |
| Income before income taxes | **36** | 36 | **145** | 144 |
| Income taxes | **—** |  | **—** | (26) |
| Net income | $**36** | $36 | $**145** | $118 |

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**ONE Gas Announces Fourth Quarter and Full Year 2025 Financial Results;** 

**February 18, 2026**

**Page 14**

**<u>APPENDIX</u>**

---

| | | | | |
|:---|:---|:---|:---|:---|
| **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** | **ONE Gas, Inc.** |
| **INFORMATION AT A GLANCE** | **INFORMATION AT A GLANCE** | **INFORMATION AT A GLANCE** | **INFORMATION AT A GLANCE** | **INFORMATION AT A GLANCE** |
| | **Three Months Ended** | **Three Months Ended** | **Year Ended** | **Year Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| (*Unaudited*) | **2025** | **2024** | **2025** | **2024** |
|  | *(Millions of dollars)* | *(Millions of dollars)* | *(Millions of dollars)* | *(Millions of dollars)* |
| Natural gas sales | $**629.1** | $573.4 | $**2196.3** | $1864.1 |
| Transportation revenues | **39.1** | 37.4 | **144.9** | 138.7 |
| Securitization customer charges | **11.4** | 10.7 | **47.4** | 44.4 |
| Other revenues | **9.8** | 9.2 | **38.8** | 36.4 |
| Total revenues | $**689.4** | $630.7 | $**2427.4** | $2083.6 |
| Cost of natural gas | **291.9** | 263.7 | **998.9** | 778.3 |
| Operating costs | **178.4** | 167.3 | **653.8** | 609.6 |
| Depreciation and amortization | **79.3** | 75.5 | **317.3** | 296.7 |
| Operating income | $**139.8** | $124.2 | $**457.4** | $399.0 |
| Net income | $**86.3** | $77.0 | $**264.2** | $222.9 |
| Capital expenditures and asset removal costs | $**184.1** | $190.4 | $**759.5** | $762.1 |
| **<u>Volumes (</u>*<u>Bcf</u>*<u>)</u>** |  |  |  |  |
| Natural gas sales |  |  |  |  |
| Residential | **34.9** | 33.7 | **114.1** | 104.1 |
| Commercial and industrial | **11.2** | 10.8 | **40.3** | 36.9 |
| Other | **0.8** | 0.6 | **3.0** | 2.1 |
| Total sales volumes delivered | **46.9** | 45.1 | **157.4** | 143.1 |
| Transportation | **56.8** | 57.3 | **216.9** | 221.0 |
| Total volumes delivered | **103.7** | 102.4 | **374.3** | 364.1 |
| **<u>Average number of customers (</u>*<u>in thousands</u>*<u>)</u>** |  |  |  |  |
| Residential | **2115** | 2101 | **2118** | 2103 |
| Commercial and industrial | **161** | 162 | **163** | 163 |
| Other | **3** | 3 | **3** | 3 |
| Transportation | **11** | 12 | **11** | 12 |
| Total customers | **2290** | 2277 | **2295** | 2281 |
| **<u>Heating Degree Days</u>** |  |  |  |  |
| Actual degree days | **2921** | 2864 | **8995** | 7991 |
| Normal degree days | **3777** | 3784 | **9730** | 9728 |
| Percent colder (warmer) than normal weather | **(23)%** | (24)% | **(8)%** | (18)% |
| **<u>Statistics by State</u>** |  |  |  |  |
| &nbsp;&nbsp;<u>Oklahoma</u> |  |  |  |  |
| &nbsp;&nbsp;Average number of customers (*in thousands*) | **929** | 924 | **931** | 924 |
| &nbsp;&nbsp;Actual degree days | **1002** | 985 | **3082** | 2783 |
| &nbsp;&nbsp;Normal degree days | **1320** | 1320 | **3356** | 3359 |
| &nbsp;&nbsp;Percent colder (warmer) than normal weather | **(24)%** | (25)% | **(8)%** | (17)% |
| &nbsp;&nbsp;<u>Kansas</u> |  |  |  |  |
| &nbsp;&nbsp;Average number of customers (*in thousands*) | **651** | 648 | **653** | 651 |
| &nbsp;&nbsp;Actual degree days | **1520** | 1433 | **4463** | 3863 |
| &nbsp;&nbsp;Normal degree days | **1807** | 1791 | **4728** | 4690 |
| &nbsp;&nbsp;Percent colder (warmer) than normal weather | **(16)%** | (20)% | **(6)%** | (18)% |
| &nbsp;&nbsp;<u>Texas</u> |  |  |  |  |
| &nbsp;&nbsp;Average number of customers (*in thousands*) | **710** | 706 | **711** | 706 |
| &nbsp;&nbsp;Actual degree days | **399** | 446 | **1450** | 1345 |
| &nbsp;&nbsp;Normal degree days | **650** | 673 | **1646** | 1679 |
| &nbsp;&nbsp;Percent colder (warmer) than normal weather | **(39)%** | (34)% | **(12)%** | (20)% |

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