Ascent Solar Technologies Inc (ASTI)

[STL Stock]

"Explanation of Responses:
1. On August 16, 2021, BD 1 Investment Holding, LLC ("BD1") sold and assigned a portion of an unsecured convertible promissory note equal to $600,000 in principal amount for a purchase price of $600,000. Following the transaction, BD1 owns two unsecured convertible promissory notes with principal amounts of $9,740,000 and $160,000, convertible at any time into 99,000,000,000 shares of Issuer's common stock at a fixed conversion price of $0.0001 per share. This joint filing on Form 4 includes Mr. Johannes Kuhn and Mrs. Ute Kuhn who are the 100% indirect owners of BD1.
2. The maturity date is December 18, 2025"

Loan maturity date refers to the date on which a borrower's final loan payment is due. Once that payment is made and all repayment terms have been met, the promissory note that is a record of the original debt is retired. In the case of a secured loan, the lender no longer has a claim to any of the borrower's assets.