ONE Gas, Inc. — fact timeline

Nickolas Stavropoulos was appointed as Director at ONE Gas, Inc..

“On July 13, 2026, we expanded our Board of Directors from eight to nine members, and Nickolas Stavropoulos was appointed to the Board to fill the additional position.”

ONE Gas, Inc. shareholders approved Advisory vote on Executive Compensation at the 2026-05-21 meeting.

“The advisory vote on compensation paid to our named executive officers as disclosed in our Proxy Statement for the 2026 annual meeting, including the Compensation Discussion and Analysis, compensation tables and narrative discussion, was approved by a majority of the voting power of the shareholders present in person or by proxy and entitled to vote as follows:”

ONE Gas, Inc. shareholders approved Amendment and Restatement of the Employee Stock Purchase Plan to Authorize an Additional 700,000 Shares of ONE Gas Common Stock for Issuance Under the Plan at the 2026-05-21 meeting.

“The proposed amendment and restatement of the ONE Gas, Inc. Employee Stock Purchase Plan to authorize an additional 700,000 shares of ONE Gas, Inc. common stock for issuance under the plan was approved by a majority of the voting power of the shareholders present in person or by proxy and entitled to vote as follows:”

ONE Gas, Inc. shareholders approved Ratification of our Independent Auditor at the 2026-05-21 meeting.

“The appointment of PricewaterhouseCoopers LLP as independent auditor for the Company for the fiscal year ending December 31, 2026, was ratified by a majority of the voting power of the shareholders present in person or by proxy and entitled to vote as follows:”

ONE Gas, Inc. shareholders approved Election of Directors at the 2026-05-21 meeting.

“Election of Directors . The individuals set forth below were elected to the Board of Directors of the Company to serve one-year terms expiring at our 2027 annual meeting of shareholders by a majority of the votes cast by the shareholders present in person or by proxy and entitled to vote as follows:”

ONE Gas, Inc. reported the quarter ended March 31, 2026 results: net income $128.7 million, EPS $2.04 per diluted share. Guidance reaffirmed.

“officer. “We are confident in our strategic plan and remain on track to achieve our 2026 financial guidance.” FINANCIAL RESULTS & HIGHLIGHTS • First quarter 2026 net income was $128.7 million, or $2.04 per diluted share, compared with $119.4 million, or $1.98 per diluted share, in the same period last year; • First quarter 2026 adjusted net income was $133.4 million,”

ONE Gas, Inc. entered into Master Forward Sale Confirmation with each Forward Purchaser (as defined in the Equity Distribution Agreement) valued at forward sale of up to $225,000,000 aggregate Shares (effective 2026-02-23).

“The Equity Distribution Agreement provides that, in addition to the issuance and sale of Shares by the Company to or through the Managers, the Company may enter into forward sale agreements under the master forward sale confirmation (the “ Master Forward Sale Confirmation ”) dated February 23, 2026 between the Company and each Forward Purchaser and the related supplemental confirmations to be entered into between the Company and the relevant Forward Purchaser.”

ONE Gas, Inc. entered into Equity Distribution Agreement with BofA Securities, Inc., BTIG, LLC, Huntington Securities, Inc., J.P. Morgan Securities LLC, Mizuho Securities USA LLC, RBC Capital Markets, LLC, Truist Securities, Inc. valued at aggregate offering price of up to $225,000,000 (effective 2026-02-23).

“On February 23, 2026, ONE Gas, Inc. (the “ Company ”) entered into an equity distribution agreement (the “ Equity Distribution Agreement ”) with BofA Securities, Inc. (“ BofA Securities ”), BTIG, LLC (“ BTIG ”), Huntington Securities, Inc. (“ HSI ”), J.P. Morgan Securities LLC (“ J.P. Morgan ”), Mizuho Securities USA LLC (“ Mizuho ”), RBC Capital Markets, LLC (“ RBC ”) and Truist Securities, Inc. (“ TSI ”), each acting as sales agent for the Company (each a “ Manager ” and collectively, the “ Managers ”); Bank of America, N.A., Nomura Global Financial Products, Inc., HSI, JPMorgan Chase Bank, National Association, Mizuho Markets Americas LLC, Royal Bank of Canada and Truist Bank, each acting as forward purchaser (each a “ Forward Purchaser ” and collectively, the “ Forward Purchasers ”); and BofA Securities, Nomura Securities International, Inc. (acting through BTIG as agent), HSI, J.P. Morgan, Mizuho, RBC and TSI, each acting as agent for its affiliated Forward Purchaser (each a “ For”

ONE Gas, Inc. amended credit facility of $1.50 billion.

“On December 17, 2025, we increased the size of our commercial paper program to permit the issuance of commercial paper notes in an aggregate principal amount not to exceed $1.50 billion at any time outstanding. Prior to this increase, our commercial paper program permitted us to issue commercial paper notes in an aggregate principal amount not to exceed $1.35 billion at any time outstanding.”

ONE Gas, Inc.: Amended and restated by-laws to update who may call special meetings of the Board and committee meetings (effective 2025-11-19).

“On and effective November 19, 2025, our Board of Directors approved and adopted amended and restated By-laws of the same date (the “Amended and Restated By-laws”), amending a provision of our existing By-laws. The Amended and Restated By-laws have been updated to provide that special meetings of the Board and any meeting of any committee designated by the Board may be called at any time by the chair of the Board, or the lead independent director of the Board, the chair of the Corporate Governance Committee, or by such number of directors as would constitute a quorum of the Board.”

ONE Gas, Inc. incurred credit facility of $1.5 billion unsecured revolving credit facility with Bank of America, N.A., as administrative agent, swing line lender, a letter of credit issuer and a lender and the other lenders and letter of credit issuers parties thereto at Term SOFR or Base Rate plus a margin specified in the Credit Agreement maturing October 30, 2030.

“agent, swingline lender, a letter of credit issuer and a lender and the other lenders and letter of credit issuers parties thereto. The Credit Agreement provides for a $1.5 billion unsecured revolving credit facility, which includes a $20 million letter of credit sub-facility and a $60 million swingline sub-facility. The Company can request an increase in”

ONE Gas, Inc.: Amended and restated by-laws to make references gender neutral (effective 2025-08-04).

“On and effective August 4, 2025, our Board of Directors approved and adopted amended and restated By-laws of the same date (the “Amended and Restated By-laws”), amending certain provisions of our existing By-laws. The Amended and Restated By-laws have been updated to make references gender neutral.”

Yves C. Siegel was appointed as Director at ONE Gas, Inc..

“Sanjay D. Meshri and Yves C. Siegel were appointed to the Board to fill the additional positions.”

Sanjay D. Meshri was appointed as Director at ONE Gas, Inc..

“Sanjay D. Meshri and Yves C. Siegel were appointed to the Board to fill the additional positions.”

Douglas H. Yaeger retired as Director at ONE Gas, Inc..

“In accordance with the ONE Gas, Inc. (the “Company”) director retirement policy as set forth our By-Laws and Corporate Governance Guidelines, Robert B. Evans and Douglas H. Yaeger retired from the Board of Directors effective May 23, 2024, immediately prior to the annual meeting of shareholders.”

Robert B. Evans retired as Director at ONE Gas, Inc..

“In accordance with the ONE Gas, Inc. (the “Company”) director retirement policy as set forth our By-Laws and Corporate Governance Guidelines, Robert B. Evans and Douglas H. Yaeger retired from the Board of Directors effective May 23, 2024, immediately prior to the annual meeting of shareholders.”

ONE Gas, Inc. reported first quarter 2024 results: net income $99.3 million, EPS $1.75 per diluted share. Guidance reaffirmed.

“First quarter 2024 net income was $99.3 million, or $1.75 per diluted share”

ONE Gas, Inc. reported for the fourth quarter and year ended December 31, 2023 results: net income $70.7 million ($1.27 per diluted share) for the fourth quarter; $231.2 million ($4.14 per diluted share) for the full ye, EPS $1.27 per diluted share (Q4); $4.14 per diluted share (full year).

“On February 21, 2024, we announced our results of operations for the fourth quarter and year ended December 31, 2023.”

ONE Gas, Inc. reported 2023 results: net income $229 million to $233 million, EPS $4.12 to $4.16 per diluted share.

“The Company also narrowed its 2023 financial guidance to earnings of $4.12 to $4.16 per diluted share from the previous range of $4.06 to $4.22 per diluted share. Net income is now expected to be in the range of $229 million to $233 million.”

ONE Gas, Inc. amended Amendment with Bank of America, N.A. (effective 2023-12-28).

“On December 28, 2023, ONE Gas, Inc. (the “ Company ”) entered into an amendment (the “ Amendment ”) to the forward sale agreement (the “ Forward Sale Agreement ”), dated as of March 8, 2023, between the Company and Bank of America, N.A. (the “ Forward Purchaser ”), to provide for a December 31, 2024 settlement date (or such earlier time as may be selected by the Company, subject to the terms of the Forward Sale Agreement) for all shares of the Company’s common stock, par value $0.01 per share (the “ common stock ”) thereunder.”

ONE Gas, Inc. incurred senior notes of $300,000,000 at 5.10% maturing 2029.

“the issuance and sale by ONE Gas of $300,000,000 aggregate principal amount of its 5.10% Senior Notes due 2029”

ONE Gas, Inc. entered into Underwriting Agreement with J.P. Morgan Securities LLC, Mizuho Securities USA LLC and U.S. Bancorp Investments, Inc., as representatives of the underwriters valued at $300,000,000 (effective 2023-12-11).

“On December 11, 2023, ONE Gas, Inc. (“ONE Gas”) entered into an underwriting agreement (the “Underwriting Agreement”) with J.P. Morgan Securities LLC, Mizuho Securities USA LLC and U.S. Bancorp Investments, Inc., as representatives of the underwriters named therein (the “Underwriters”), with respect to the issuance and sale by ONE Gas of $300,000,000 aggregate principal amount of its 5.10% Senior Notes due 2029 (the “Notes”).”

ONE Gas, Inc. amended debt of not to exceed $1.2 billion.

“On November 20, 2023, we increased the size of our commercial paper program to permit the issuance of commercial paper notes in an aggregate principal amount not to exceed $1.2 billion at any time outstanding.”

Christopher P. Sighinolfi was appointed as senior vice president and chief financial officer at ONE Gas, Inc..

“On November 16, 2023, the Company announced that its Board elected Christopher P. Sighinolfi to serve as the Company’s senior vice president and chief financial officer, effective January 1, 2024.”

Caron A. Lawhorn retired as senior vice president and chief financial officer at ONE Gas, Inc..

“On November 14, 2023, Caron A. Lawhorn, the senior vice president and chief financial officer of ONE Gas, Inc. (the “Company”), notified the board of directors of the Company (the “Board”) of her plan to retire, effective as of December 31, 2023.”

ONE Gas, Inc. reported nine months ended September 30, 2023 results: net income $160.5 million, EPS $2.87 per diluted share. Guidance reaffirmed.

“Year-to-date 2023 net income was $160.5 million, or $2.87 per diluted share, compared with $154.7 million, or $2.85 per diluted share, in the same period last year;”

ONE Gas, Inc. reported quarter ended September 30, 2023 results: net income $25.2 million, EPS $0.45 per diluted share. Guidance reaffirmed.

“Third quarter 2023 net income was $25.2 million, or $0.45 per diluted share, compared with $23.7 million, or $0.44 per diluted share, in the third quarter 2022;”

ONE Gas, Inc. entered into Forward Sale Agreement with Bank of America, N.A. valued at 1,200,000 shares of common stock at initial forward sale price of $73.67 per share (effective 2023-09-11).

“On September 11, 2023, ONE Gas, Inc. (the “ Company ”) entered into a forward sale agreement (the “ Forward Sale Agreement ”) with Bank of America, N.A. (the “ Forward Purchaser ”), relating to 1,200,000 shares of the Company’s common stock, par value $0.01 per share (the “ common stock ”).”

ONE Gas, Inc. reported second quarter 2023 results: net income $32.7 million, EPS $0.58 per diluted share. Guidance reaffirmed.

“Second quarter 2023 net income was $32.7 million, or $0.58 per diluted share, compared with $32.1 million, or $0.59 per diluted share, in the second quarter 2022”

Deborah A.P. Hersman was appointed as Director at ONE Gas, Inc..

“On June 29, 2023, we expanded our Board of Directors from eight to nine members and Deborah A.P. Hersman was appointed to the Board to fill the additional position.”

ONE Gas, Inc. shareholders approved Advisory vote on Executive Compensation at the 2023-05-25 meeting.

“3. Advisory vote on Executive Compensation. The advisory vote on compensation paid to our named executive officers as disclosed in our Proxy Statement for the 2023 annual meeting, including the Compensation Discussion and Analysis, compensation tables and narrative discussion, was approved by a majority of the voting power of the shareholders present in person or by proxy and entitled to vote as follows:”

ONE Gas, Inc. shareholders approved Ratification of our Independent Auditor at the 2023-05-25 meeting.

“2. Ratification of our Independent Auditor. The appointment of PricewaterhouseCoopers LLP as independent auditor for the Company for the fiscal year ending December 31, 2023, was ratified by a majority of the voting power of the shareholders present in person or by proxy and entitled to vote as follows:”

ONE Gas, Inc. shareholders approved Election of Directors at the 2023-05-25 meeting.

“1. Election of Directors. The individuals set forth below were elected to the Board of Directors of the Company to serve one-year terms expiring at our 2024 annual meeting of shareholders by a majority of the votes cast by the shareholders present in person or by proxy and entitled to vote as follows:”

ONE Gas, Inc. reported first quarter 2023 results: net income $102.6 million, EPS $1.84 per diluted share. Guidance reaffirmed.

“On May 1, 2023, we announced our results of operations for the quarter ended March 31, 2023.”

ONE Gas, Inc. amended Second Amended and Restated Revolving Credit Agreement Extension Agreement with Bank of America, N.A. valued at $1.0 billion credit facility; maturity extended to March 16, 2028 (effective 2023-03-16).

“Effective March 16, 2023, we entered into an extension agreement (the “Extension Agreement”) related to our $1.0 billion second amended and restated revolving credit agreement, dated as of March 16, 2021, as amended (the “Credit Agreement”), with Bank of America, N.A., as administrative agent, swing line lender, and a letter of credit issuer, and the other lenders and letter of credit issuers party thereto from time to time.”

ONE Gas, Inc. entered into Equity Distribution Agreement with BofA Securities, Inc., J.P. Morgan Securities LLC, Mizuho Securities USA LLC, RBC Capital Markets, LLC valued at $300,000,000 (effective 2023-02-24).

“On February 24, 2023, ONE Gas, Inc. (the “ Company ”) entered into an equity distribution agreement (the “ Equity Distribution Agreement ”) with BofA Securities, Inc. (“ BofA Securities ”), J.P. Morgan Securities LLC (“ J.P. Morgan ”), Mizuho Securities USA LLC (“ Mizuho ”) and RBC Capital Markets, LLC (“ RBC ”), each acting as sales agent for the Company (each, a “ Manager ” and collectively, the “ Managers ”); Bank of America, N.A., JPMorgan Chase Bank, National Association, Mizuho Markets Americas LLC and Royal Bank of Canada, each acting as forward purchaser (each , a “ Forward Purchaser ” and collectively, the “ Forward Purchasers ”); and BofA Securities, J.P. Morgan, Mizuho and RBC, each acting as agent for its affiliated Forward Purchaser (each a “ Forward Seller ” and collectively, the “ Forward Sellers ”); with respect to the offering and sale from time to time through the Managers of shares of the Company’ common stock, par value $0.01 per have, having an aggregate offering p”

ONE Gas, Inc.: Adopted amended and restated By-laws on February 21, 2023, including changes to nomination procedures for director elections and minor administrative changes (effective 2023-02-21).

“On and effective February 21, 2023, our Board of Directors approved and adopted amended and restated By-laws of the same date (the “Amended and Restated By-laws”), amending certain provisions of our existing By-laws.”

ONE Gas, Inc. reported 2022 results: net income $221 million to $223 million, EPS $4.06 to $4.10 per diluted share.

“The Company also narrowed its 2022 financial guidance to earnings of $4.06 to $4.10 per diluted share from the previous range of $4.00 to $4.16 per diluted share. Net income is now expected to be in the range of $221 million to $223 million.”

ONE Gas, Inc. entered into Underwriting Agreement with J.P. Morgan Securities LLC and RBC Capital Markets, LLC, as representatives of the underwriters named therein valued at $336,000,000 aggregate principal amount (effective 2022-11-09).

“On November 9, 2022, Kansas Gas Service, a Division of ONE Gas, Inc. (“KGS”), and Kansas Gas Service Securitization I, L.L.C. (the “Issuing Entity”) entered into an Underwriting Agreement (the “Underwriting Agreement”) with J.P. Morgan Securities LLC and RBC Capital Markets, LLC, as representatives of the underwriters named therein (including BofA Securities, Inc. and Wells Fargo Securities, LLC, the “Underwriters”), with respect to the purchase and sale of $336,000,000 aggregate principal amount of the Issuing Entity’s Series 2022-A Senior Secured Securitized Utility Tariff Bonds, Tranche A (the “Bonds”)”

Brian F. Brumfield was elected as Vice President, Chief Accounting Officer and Controller at ONE Gas, Inc..

“Effective November 1, 2022, the Board of Directors of ONE Gas, Inc. (“ONE Gas” or the “Company”) elected Brian F. Brumfield to serve as the Company’s Vice President, Chief Accounting Officer and Controller.”

ONE Gas, Inc. reported third quarter ended September 30, 2022 results: net income $23.7 million, EPS $0.44 per diluted share. Guidance reaffirmed.

“ONE Gas Announces Third Quarter 2022 Financial Results; Narrows 2022 Financial Guidance”

ONE Gas, Inc. reported year to date 2022 results: net income $154.7 million, EPS $2.85 per diluted share.

“Year to date 2022 net income was $154.7 million, or $2.85 per diluted share, compared with $145.9 million, or $2.72 per diluted share, in the same period last year;”

ONE Gas, Inc. reported third quarter ended September 30, 2022 results: net income $23.7 million, EPS $0.44 per diluted share.

“Third quarter 2022 net income was $23.7 million, or $0.44 per diluted share, compared with $20.3 million, or $0.38 per diluted share, in the third quarter 2021;”

Kent Shortridge was elected as senior vice president of operations and customer service at ONE Gas, Inc..

“The ONE Gas, Inc. (“ONE Gas” or the “Company”) Board of Directors elected Kent Shortridge to serve as the Company’s senior vice president of operations and customer service, effective March 1, 2022.”