As I understand it, it’s called a Net Trade or Average Weighted Trade (Avg on the provided screenshot) where typically a financier or insider has a block of shares that they are selling and needs the broker dealer to liquidate them at a negotiated price.
From the FINRA handbook:
Section 404: Weighted Average Price/Special Pricing Formula Transactions
Q404.1: Member BD1 executes multiple trades to satisfy a customer order and then trades with the customer at a price equal to the volume-weighted average cost of the original trades plus a net difference in accordance with a net trading agreement with its customer.
That’s a urban legend. Avg price print can be printed during or after market close (there’s no AH trading in OTC), generally in high volume tickers where multiple trades are executed at var prices, but printed with the avg price of the batch.