Someone put in an order at that price. Most brokerages only accept limit orders for Grey Market stocks. Since there's no bid or ask, you have to guess a price that an MM will be interested in accepting.
But in this case, the seller's broker may not have refused a limit order. Looks as if he had a small position that he just wanted to get rid of. A market order would have gone off at 0.0001.
That doesn't mean the price will stay there. Another seller may offer a higher price, and an MM may take it. Usually there are big price swings in Greys, especially shortly after they resume trading.
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