On June 22, 2026, Nuvve Denmark ApS, a Danish company ("Nuvve Denmark") and wholly owned subsidiary of Nuvve Holding Corp. (the "Company"), entered into a sale and purchase agreement (the "Sale and Purchase Agreement") with Toparceanu Ioan, Ciolacu Silviu, Fodor Alexandru, Vulcan Ioan, Dungaciu Andrei, Popa Partenie (collectively, the "Sellers" and together with the Purchaser, the "Parties")to acquire all of the equity interests of BESS Sibiu SRL, a Romanian limited liability company ("BESS Sibiu"), which is currently developing a 42 MW battery energy storage system (the "Battery Energy Storage Project") in Sibiu, Romania. In exchange, Nuvve Denmark agreed to pay to the Sellers, (i) a monthly fee of €10,000 (approximately $11,420 at the June 30, 2026 EUR/USD exchange rate) accruing from the execution of the Sale and Purchase Agreement until the earlier of the COD Date (as defined below) or COD Long Stop Date (as defined below) (the "Development Fee"), (ii) upon the Closing (as defined below), approximately €420,000 (approximately $480,000 at the June 30, 2026 EUR/USD exchange rate) (the "Initial Purchase Price"), subject to certain adjustments, including (a) an increase per the amount of the financial guarantee made to the Romanian Energy Regulatory Authority, (b) a decrease for the amount of certain outstanding loans owed by BESS Sibiu to the Sellers (the "Seller Loan Amount"), and (c) relevant adjustments, which may be either a positive or negative amount, for the net working capital of BESS Sibiu at the Closing, and (iii) only upon receipt of a generation license issued by the Romanian Energy Regulatory Authority regarding the Battery Energy Storage Project (the "COD Date"), approximately €1,260,000 (approximately $1,440,000 at the June 30, 2026 EUR/USD exchange rate), subject to reduction by the amount of the previously paid Development Fee, (the "COD Payment"). If, due to reasons attributable to the Sellers, the COD Date has not occurred as of the fifteen-month anniversary of the Closing (the "COD Long Stop Date"), the COD Payment shall not become due or payable. Additionally, Nuvve Denmark has agreed to pay to the Sellers the Seller Loan Amount in an aggregate amount equal to RON 946,000 (approximately $206,000 at the June 30, 2026 RON/USD exchange rate).