ASP Isotopes Inc. filed a current report on August 20, 2026, disclosing that its wholly-owned subsidiary Renergen Limited entered into a Second Amendment and Restatement Agreement with The Standard Bank of South Africa Limited on August 14, 2026, restructuring a secured ZAR term loan facility.

Key Highlights

  • Loan principal: The amended facility carries an aggregate principal amount of ZAR230,532,658.90, or approximately USD14,212,864.30 at a current exchange rate, according to the filing.
  • Maturity date: The Loan matures on August 14, 2027, one year from the effective date of the Second Amendment.
  • Interest rate: Interest accrues at the Compounded Reference Rate plus a margin of 1.46%, resulting in an effective rate of 8.31%; overdue amounts accrue an additional 2% per annum above the applicable rate.
  • Capitalized interest: The new principal reflects the prior facility's ZAR155,000,000 principal plus all accrued unpaid interest that was capitalized and added to the principal on August 14, 2026.
  • Pledged shares: NTIGT Investments Proprietary Limited has pledged 1,546,268 shares of ASP Isotopes common stock to the Lender as security.
  • Put Option granted: The Company granted the Lender an irrevocable put option to require purchase of the Pledged Shares at 100% of the five-day volume-weighted average price on the Johannesburg Stock Exchange upon a continuing Event of Default.
  • Covenant deadline: The Borrower must provide, by November 30, 2026, written evidence irrevocably waiving certain defaults under Existing Funding Agreements with specified lenders.

Renergen Restructures Standard Bank Facility, Adding Collateral Account and Put Option

According to the filing, Renergen Limited, a wholly-owned subsidiary of ASP Isotopes Inc. (NASDAQ:ASPI), entered into the Second Amendment and Restatement Agreement with The Standard Bank of South Africa Limited on August 14, 2026. The agreement replaced the Amended and Restated Secured Term Loan Facility Agreement dated December 12, 2025. The new principal of ZAR230,532,658.90 consolidates the prior ZAR155,000,000 principal with all accrued unpaid interest that was capitalized on the same date.

The filing discloses that the Second Amendment requires Renergen to maintain a Collateral Account with the Lender, with a balance at least equal to the Commitment, and to grant the Lender exclusive control of that account. On each Interest Payment Date, the Lender may debit the account for accrued interest and apply it toward the Borrower's payment obligation. The loan continues to be secured, in part, by a pledge of 1,546,268 shares of ASP Isotopes common stock held by NTIGT Investments Proprietary Limited, an associate of Nicholas Mitchell and Stefano Marani.

The Put Option Agreement, also dated August 14, 2026, grants the Lender an irrevocable right to require the Company or its nominee to purchase the Pledged Shares at a price equal to 100% of the five consecutive Trading Day volume-weighted average price on the Johannesburg Stock Exchange immediately preceding exercise, multiplied by the number of Pledged Shares. The Put Option is exercisable upon a continuing Event of Default and remains in effect until the Discharge Date. The filing also notes cross-default provisions covering Financial Indebtedness of Renergen, Tetra4 Proprietary Limited, NTIGT, and ASP Isotopes Inc. itself, subject to a 10-day cure period. The Second Amendment Documents are governed by South African law.

What Was Disclosed

ASP Isotopes disclosed that its subsidiary Renergen Limited amended and restated a secured ZAR term loan with Standard Bank, consolidating principal and capitalized interest into a ZAR230,532,658.90 facility maturing August 14, 2027, and simultaneously entered into a Put Option Agreement covering 1,546,268 pledged shares of ASP Isotopes common stock.