Note 12 — Subsequent Events

The Company evaluated subsequent events and transactions that occurred after the balance sheet date through August 14, 2026, the date at which the unaudited condensed consolidated financial statements were issued. Based upon this review, the Company did not identify any subsequent events that required adjustment or disclosure in the unaudited condensed consolidated financial statements, except as noted below.

Subsequent to June 30, 2026, the Company borrowed additional amounts under the LOC in the aggregate amount of approximately $426,000, increasing the outstanding balance under the LOC to approximately $8.9 million. On August 10, 2026, the Company repaid approximately $555,000 of accrued interest under the LOC to the lender.

Subsequent to June 30, 2026, the Company sold an aggregate of 1,362,315 shares of its Class A common stock under the ATM program for gross proceeds of approximately $2.3 million and incurred approximately $309,000 in allocated offering costs.

On August 5, 2026, the Company entered into an exclusive representation and equipment lease agreement with Ulusal Atmosferik Sistemler Ve Iklim Teknolojileri Sanayi Ve Ticaret Anonim Sirketi (“UASIT”), a Turkey-based company focused on water resource management, climate adaptation and mitigation, sustainable agriculture and forestry management. Under the agreement, UASIT became RET's exclusive representative for the deployment of the Company’s WETA platform in the Republic of Turkey. The agreement also provides for the lease of two WETA units for an initial term of 60 months subject to certain performance metrics, and includes renewal and purchase option provisions, subject to the terms and conditions of the agreement. The agreement is contingent upon the Company receiving an order for the leased units on or before December 31, 2026. The Company has not received the order as of the filing date.