X0202 SCHEDULE 13G 0001080171 XXXXXXXX LIVE Units, each consisting of one Class A ordinary share and one-half of one redeemable warrant 03/31/2026 0002094265 MOUNTAIN LAKE ACQUISITION CORP. II G6301L125 930 Tahoe Blvd STE 802 PMB 45 Incline Village NV 89451 Rule 13d-1(b) Aristeia Capital, L.L.C. DE 2186394.00 0.00 2186394.00 0.00 2186394.00 N 5.91 IA OO MOUNTAIN LAKE ACQUISITION CORP. II 930 Tahoe Blvd, STE 802 PMB 45, Incline Village, NV 89451 Aristeia Capital, L.L.C. One Greenwich Plaza, Suite 300, Greenwich, CT 06830 Delaware N IA 2,186,394 The Reporting Person may be deemed the beneficial owner of 2,186,394 Units, each consisting of one Class A ordinary share and one-half of one redeemable warrant, which is approximately 5.91% of the outstanding shares. This percentage was determined by dividing 2,186,394 by 36,980,000, which is the number of shares outstanding as of March 20, 2026, as reported in the Issuer's 10-K filed with the SEC on March 20, 2026. 5.91% 2,186,394 0 2,186,394 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. Aristeia Capital, L.L.C. /s/ Andrew B. David 05/14/2026