SCHEDULE 13G 0002074873 XXXXXXXX LIVE Class A ordinary shares, par value $0.0001 per share 09/30/2025 0002074872 Rice Acquisition Corporation 3 G7553X106 102 East Main Street, Second Story Carnegie PA 15106 Rule 13d-1(d) Rice Acquisition Sponsor 3 LLC DE 0.00 22062600.00 0.00 22062600.00 22062600.00 N 39.0 OO The reported securities represent (i) 2,500 Class A ordinary shares ("Class A Shares"), (ii) 100 Class A Shares that are issuable upon conversion of Class A units of Rice Acquisition Holdings 3 LLC ("Opco") (and forfeiture of an equivalent number of Class B ordinary shares ("Class B Shares")) on a one-for-one basis, (iii) 11,410,000 Class A Shares that are issuable in respect of Class A units of Opco received upon conversion of an equivalent number of Class B units of Opco (and an equivalent number of Class B Shares) on a one-for-one basis and (iv) 10,650,000 warrants to acquire Class A Shares with an exercise price of $11.50 per share, which become exercisable 30 days after completion of the Issuer's initial business combination ("Warrants"). The percentage of class is calculated based upon 34,502,500 Class A Shares outstanding as of November 3, 2025, as reported on the Issuer's Form 10-Q filed with the Securities and Exchange Commission (the "SEC") on November 3, 2025, as increased by 22,060,100 Class A Shares issuable in respect of Class A units of Opco, Class B units of Opco and Warrants beneficially owned by the Reporting Persons. Daniel J. Rice, IV X1 0.00 22062600.00 0.00 22062600.00 22062600.00 N 39.0 IN The reported securities represent (i) 2,500 Class A Shares, (ii) 100 Class A Shares that are issuable upon conversion of Class A units of Opco (and forfeiture of an equivalent number of Class B Shares) on a one-for-one basis, (iii) 11,410,000 Class A Shares that are issuable in respect of Class A units of Opco received upon conversion of an equivalent number of Class B units of Opco (and an equivalent number of Class B Shares) on a one-for-one basis and (iv) 10,650,000 Warrants to acquire Class A Shares with an exercise price of $11.50 per share, which become exercisable 30 days after completion of the Issuer's initial business combination. The percentage of class is calculated based upon 34,502,500 Class A Shares outstanding as of November 3, 2025, as reported on the Issuer's Form 10-Q filed with the SEC on November 3, 2025, as increased by 22,060,100 Class A Shares issuable in respect of Class A units of Opco, Class B units of Opco and Warrants beneficially owned by the Reporting Persons. J. Kyle Derham X1 0.00 22062600.00 0.00 22062600.00 22062600.00 N 39.0 IN The reported securities represent (i) 2,500 Class A Shares, (ii) 100 Class A Shares that are issuable upon conversion of Class A units of Opco (and forfeiture of an equivalent number of Class B Shares) on a one-for-one basis, (iii) 11,410,000 Class A Shares that are issuable in respect of Class A units of Opco received upon conversion of an equivalent number of Class B units of Opco (and an equivalent number of Class B Shares) on a one-for-one basis and (iv) 10,650,000 Warrants to acquire Class A Shares with an exercise price of $11.50 per share, which become exercisable 30 days after completion of the Issuer's initial business combination. The percentage of class is calculated based upon 34,502,500 Class A Shares outstanding as of November 3, 2025, as reported on the Issuer's Form 10-Q filed with the SEC on November 3, 2025, as increased by 22,060,100 Class A Shares issuable in respect of Class A units of Opco, Class B units of Opco and Warrants beneficially owned by the Reporting Persons. Rice Acquisition Corporation 3 102 East Main Street, Second Story Carnegie, Pennsylvania 15106 This statement is filed by the entities and individuals listed below, all of whom together are referred to herein as the "Reporting Persons": (i) Rice Acquisition Sponsor 3 LLC ("Sponsor") (ii) Daniel J. Rice, IV (iii) J. Kyle Derham The principal business address of each of the Reporting Persons is c/o Rice Acquisition Corporation 3, 102 East Main Street, Second Story, Carnegie, Pennsylvania 15106. See responses to row 4 on each cover page. Y See responses to row 9 on each cover page. The reported securities represent (i) 2,500 Class A Shares, (ii) 100 Class A Shares that are issuable upon conversion of Class A units of Opco (and forfeiture of an equivalent number of Class B Shares) on a one-for-one basis, (iii) 11,410,000 Class A Shares that are issuable in respect of Class A units of Opco received upon conversion of an equivalent number of Class B units of Opco (and an equivalent number of Class B Shares) on a one-for-one basis and (iv) 10,650,000 Warrants to acquire Class A Shares with an exercise price of $11.50 per share, which become exercisable 30 days after completion of the Issuer's initial business combination. The reported securities are directly held by Sponsor. Shalennial Acquisition Sponsor 3 LLC ("Rice Sponsor") and Mercuria Energy Group Holding, SA are members of Sponsor, with Rice Sponsor serving as the sole managing member. Rice Sponsor is a wholly owned subsidiary of Shalennial Fund II, L.P. Daniel J. Rice, IV and J. Kyle Derham are members of the board of managers of Rice Investment Group UGP, LLC, which is the general partner of Shalennial GP II, L.P., which is the general partner of Shalennial Fund II, L.P. As such, Messrs. Rice and Derham may be deemed to have or share beneficial ownership of the reported securities held directly by Sponsor. The filing of this statement shall not be construed as an admission that the Reporting Persons or any of the foregoing are the beneficial owners of any of the reported securities covered by this statement. See responses to row 11 on each cover page. The reported percentage of class is calculated based upon 34,502,500 Class A Shares outstanding as of November 3, 2025, as reported on the Issuer's Form 10-Q filed with the SEC on November 3, 2025, as increased by 22,060,100 Class A Shares issuable in respect of Class A units of Opco, Class B units of Opco and Warrants beneficially owned by the Reporting Persons. See responses to row 5 on each cover page. See responses to row 6 on each cover page. See responses to row 7 on each cover page. See responses to row 8 on each cover page. Y Y Y Y Y Y Exhibit 99.1 Joint Filing Agreement, dated as of November 14, 2025 Rice Acquisition Sponsor 3 LLC /s/ James Wilmot Rogers 11/14/2025 Daniel J. Rice, IV /s/ Daniel J. Rice, IV 11/14/2025 J. Kyle Derham /s/ James Wilmot Rogers 11/14/2025