The U.S. DOJ unsealed an indictment in the Eastern District of Virginia charging Lai Kui Sen, co‑CEO of Ostin Technology Group Co. Ltd. (NASDAQ: OST), and Yan Zhao (aka “Hank Shi/Hank Shu”), a financial advisor, with orchestrating a $100+ million securities fraud scheme that targeted U.S. retail investors between April–June 2025.