Joseph L. McCormick - 16 Feb 2026 Form 4 Insider Report for ONE Gas, Inc. (OGS)

Reporting relationship: Former Senior Vice President, General Counsel and Assistant Secretary
Issuer ticker: OGS
Reported as of: 16 Feb 2026
Net transaction value: -$231,920
SEC form: 4
Accepted by SEC: 19 Feb 2026, 16:15:26 UTC
Prior SEC filing: 20 Feb 2025
Next SEC filing: 10 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Brian K. Shore, Attorney-in-Fact for Joseph L. McCormick

Key filing fact

Joseph L. McCormick filed Form 4 for ONE Gas, Inc. (OGS) on 19 Feb 2026.

Key facts

This page summarizes Joseph L. McCormick's Form 4 filing for ONE Gas, Inc. (OGS).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 19 Feb 2026, 16:15.

Change

Previous filing in this sequence was filed on 20 Feb 2025.
Current net transaction value: -$231,920.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001595607 Primary reporting owner

McCormick Joseph L

Relationship: Former Senior Vice President, General Counsel and Assistant Secretary
Address: 15 E. 5TH STREET, TULSA
Signature: /s/ Brian K. Shore, Attorney-in-Fact for Joseph L. McCormick
Signature date: 19 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

OGS transaction

Common stock, par value $0.01

Options Exercise

Transaction value: $327,279
Shares: +3,804
Change %: +5.2%
Price: $86.04
Shares after: 76,515
Date: 16 Feb 2026
Ownership: Direct
Footnotes: F1

OGS transaction

Common stock, par value $0.01

Tax liability

Transaction value: $138,377
Shares: -1,608
Change %: -2.1%
Price: $86.04
Shares after: 74,907
Date: 16 Feb 2026
Ownership: Direct
Footnotes: F1

OGS holding

Common stock, par value $0.01

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,697
Date: 16 Feb 2026
Ownership: by 401(k) Plan

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

OGS transaction Derivative

Performance Units 2023

Options Exercise

Transaction value: $420,822
Shares: -4,891
Change %: -100%
Price: $86.04
Shares after: 0
Date: 16 Feb 2026
Ownership: Direct
Underlying class: Common stock, par value $0.01
Underlying amount: 4,891
Exercise price
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on a prorated basis upon the reporting person's December 9, 2025, retirement pursuant to the terms of the award agreement. The award vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.

SEC remarks

Former Senior Vice President, General Counsel and Assistant Secretary