Andrew Charles Grezlak, of Doylestown, Pennsylvania, a stockbroker formerly registered with Cambridge Investment Research Inc., has been barred from associating with any Financial Industry Regulatory Authority (FINRA) member in any capacity based upon allegations that he failed to respond to FINRA requests for information. Case No. 2022076824801 (September 25, 2023). According to FINRA Rule 9552(h),…