WMB · Williams Companies, Inc.

Shares of common stock withheld by Issuer to satisfy tax withholdings of the Reporting Person in connection with a 2025 grant of time-based restricted stock units previously reported on an as-owned basis in Table I.

Time-based restricted stock units convert into common stock on a one-for-one basis.

Time-based restricted stock units convert into common stock on a one-for-one basis.

Represents shares sold pursuant to a 10b5-1 Sales Plan entered into between Reporting Person and Broker on September 10, 2025.

Represents shares sold pursuant to a 10b5-1 Sales Plan entered into between Reporting Person and Broker on September 10, 2025.

Reporting person is disposing of common shares to the issuer to pay for the conversion price of the option and tax withholding as part of an exercise and hold transaction.

Represents shares sold pursuant to a 10b5-1 Sales Plan entered into between Reporting Person and Broker on September 10, 2025.

Represents the conversion of derivative securities reported in Table II into shares of common stock reported in Table I.

Represents the conversion of derivative securities reported in Table II into shares of common stock reported in Table I.

This transaction was executed in multiple trades at prices ranging from $74.40- $75.65. The prices reported above reflect the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Represents shares sold pursuant to a 10b5-1 Sales Plan entered into between Reporting Person and Broker on September 10, 2025.

Includes 5,476 stock units for 2026 annual grant and 4,879 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Includes 2,738 stock units for 2026 annual grant and 2,348 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Includes 2,738 stock units for 2026 annual grant and 512 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Includes 2,738 stock units for 2026 annual grant and 677 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Includes 2,738 stock units for 2026 annual grant and 2,135 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Includes 2,738 stock units for 2026 annual grant and 677 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Includes 2,738 stock units for 2026 annual grant and 2,135 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Includes 2,738 stock units for 2026 annual grant and 1,080 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Includes 2,738 stock units for 2026 annual grant and 2,135 dividend equivalents on stock units, which are exempt from Section 16 pursuant to Rule 16a-11.

Represents shares sold pursuant to a 10b5-1 Sales Plan entered into between Reporting Person and Broker on September 10, 2025.

This transaction was executed in multiple trades at prices ranging from $74.39 - $74.40. The prices reported above reflect the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Time-based restricted stock units convert into common stock on a one-for-one basis.

Shares of common stock withheld by Issuer to satisfy tax withholdings of the Reporting Person in connection with a 2023 grant of time-based restricted stock units previously reported on an as-owned basis in Table I.

Performance-based restricted stock units. Vesting is subject to applicable grant agreement and Compensation and Management Development Committee certification that the Company has met the applicable three year performance measures for certain financial metrics not solely tied to the market price of issuer securities. The payout will range from 0 percent to 200 percent of the awarded number of units.

Performance-based restricted stock units. Vesting is subject to applicable grant agreement and Compensation and Management Development Committee certification that the Company has met the applicable three year performance measures for certain financial metrics not solely tied to the market price of issuer securities. The payout will range from 0 percent to 200 percent of the awarded number of units.

Time-based restricted stock units convert into common stock on a one-for-one basis.

Reporting person is transferring common stock, which is directly owned, to CCJG Investments, LLC thereby changing the form of ownership of such common stock to indirectly owned.

Represents shares sold pursuant to a 10b5-1 Sales Plan entered into between Reporting Person and Broker on September 10, 2025.

This transaction was executed in multiple trades at prices ranging from $74.91 - $74.94. The prices reported above reflect the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Reflects the gift of common stock to a charitable donor advised fund.

This transaction was executed in multiple trades at prices ranging from $72.88 - $72.99. The prices reported above reflect the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Shares of common stock vesting pursuant to a 2023 performance-based RSU grant agreement between the Reporting Person and the Issuer and including an adjustment for performance at greater than target as certified by the Issuer's Compensation and Management Development Committee.

Performance-based restricted stock units. Vesting is subject to applicable grant agreement and Compensation and Management Development Committee certification that the Company has met the applicable three year performance measures for certain financial metrics not solely tied to the market price of issuer securities. The payout will range from 0 percent to 200 percent of the awarded number of units.

Shares of common stock withheld by Issuer to satisfy tax withholdings of the Reporting Person in connection with a 2023 grant of time-based restricted stock units previously reported on an as-owned basis in Table I.