SCHEDULE 13G 0000351173 XXXXXXXX LIVE Common Stock, par value $0.01 per share 12/31/2025 0001899883 FTAI Infrastructure Inc. 35953C106 1345 Avenue of the Americas, 45th Floor New York NY 10105 Rule 13d-1(b) FRONTIER CAPITAL MANAGEMENT CO.,LLC DE 3296991.00 0.00 6576963.00 0.00 6576963.00 N 5.65 IA FTAI Infrastructure Inc. 1345 Avenue of the Americas, 45th Floor, New York, New York 10105 FRONTIER CAPITAL MANAGEMENT CO., LLC 99 Summer Street Boston, MA 02110 Delaware N IA 6,576,963 5.65% 3,296,991 0 6,576,963 0 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. FRONTIER CAPITAL MANAGEMENT CO.,LLC Robert E. Phay 02/17/2026