The Company’s joint interest billings consist of receivables from partners with interests in common oil and gas properties operated by the Company for shared costs. Joint interest billings are classified as current and long-term receivables based on when collection is expected to occur.

In February 2019, Kosmos and BP signed Carry Advance Agreements with the national oil companies of Mauritania and Senegal obligating us to finance a portion of the respective national oil company’s share of certain development and production costs incurred for the GTA Phase 1 project through the Commercial Operations Date of the Gimi FLNG vessel. The Commercial Operations Date was achieved in June 2025 following the successful ramp-up to the daily contracted sales volume level under the Tortue Phase 1 SPA, equivalent to approximately 2.45 million tonnes per annum. As of June 30, 2025 and December 31, 2024, the principal balance due from the national oil companies was $355.5 million and $280.1 million, respectively, which is classified as Long-term receivables in our consolidated balance sheets. As of June 30, 2025 and December 31, 2024, accrued interest on the balance due from the national oil companies was $68.1 million and $56.6 million, respectively, which is classified as Long-term receivables in our consolidated balance sheets. Interest income on the long-term notes receivable was $6.2 million and $4.7 million for the three months ended June 30, 2025 and 2024, respectively, and $11.5 million and $9.4 million for the six months ended June 30, 2025 and 2024, respectively.