Item 2. Unregistered Sales of Equity Securities
ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds.
 
In January 2023, we entered into purchase agreements with accredited investors which provided for the sale of convertible notes with an aggregate face value of $0.7 million.  The outstanding principal and interest accrued on the notes are convertible at any time and from time to time by the holders into shares of our common stock at a fixed conversion price of $0.16 per share.  Any unconverted, outstanding principal amount is payable in cash on the five-year anniversary of the issuance date of the notes.  The shares underlying the notes, as well as shares reserved for future in-kind interest payments on the notes, were registered on a registration statement that was declared effective on May 11, 2023 (File No. 333-271351).
 
In January 2023, we received aggregate proceeds of approximately $0.14 million from the sale of common stock to accredited investors at a price of $0.16 per share.  The shares sold were exempt from registration under Section 4(a)(2) of the Securities Act and were registered for resale on a registration statement that was declared effective on May 11, 2023 (File No. 333-271351).  The proceeds were used for working capital and general corporate purposes.
 
ITEM 3. Defaults Upon Senior Securities.
 
None.
 
ITEM 4. Mine Safety Disclosures.
 
Not applicable.
 
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