NorthWest Biotherapeutics Inc (NWBO)

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“For over-the-counter (OTC) equity securities, which are generally stocks that are not listed on an exchange, the Financial Industry Regulatory (FINRA) issues trading and quotation halts under certain circumstances. For example, FINRA may impose a halt if a stock is listed on a foreign securities exchange, and that exchange halts trading in the stock for regulatory reasons, typically due to public interest concerns or for a pending news announcement. In addition, FINRA may halt trading and quotation in an OTC stock if the OTC stock is a derivative or component of a stock listed on a U.S. or foreign exchange and such exchange imposes a trading halt in the listed stock. FINRA also may halt trading and quotation if it determines that an extraordinary event has occurred or is ongoing that has had a material effect on the market for the OTC stock or may cause major disruption to the marketplace or significant uncertainty in the settlement and clearance process. Investors can check the OTC Daily List on FINRA’s website for information on halts in OTC stocks.” https://www.finra.org/investors/insights/trading-halts