Ostin Technology Group Co., Ltd.
Case Overview
| Lead Plaintiff Deadline: | Lead Plaintiff Deadline: 04/17/2026 |
| Status: | Status: Investigating |
| Company Name: | Company Name: Ostin Technology Group Co., Ltd. |
| Court: | Court: Southern District of New York |
| Case Number: | Case Number: 1:26cv01288 |
| Class Period: | Class Period: 05/11/2025 - 06/26/2025 |
| Ticker: | Ticker: OST |
| Related Attorneys: | Lead Attorneys: Thomas W. Elrod |
| Related Practices: | Related Practices: Securities |
The law firm of Kirby McInerney LLP announces that a class action lawsuit has been filed on behalf of investors who acquired Ostin Technology Group Co., Ltd. (“Ostin” or the “Company”) (NASDAQ:OST) securities during the period of May 11, 2025 through June 26, 2025, inclusive (“the Class Period”).
The lawsuit alleges that beginning in April 2025, Lai Kui Sen and co-conspirators engineered a fraudulent sequence of securities offerings specifically designed to place the majority of Ostin shares in the hands of at least fifteen co-conspirators for pennies per share or, in many cases, for no consideration whatsoever. These securities offerings were synchronized with a fraudulent campaign to artificially inflate the price and trading volume of Ostin stock through social media and messaging service applications, including paid promotions that impersonated actual investment advisors and financial professionals.
During the class period, the fraudulent promotional campaign artificially inflated the value of Ostin from an approximately $22 million company (based on a stock price of $0.78 on April 14, 2025) into a greater than $1 billion company by market capitalization (based on a peak stock price of $9.40 on June 26, 2025). As Ostin's stock price rose, Yan Zhao and Lai Kui Sen facilitated the opening of brokerage accounts on behalf of co-conspirators, which were used to hold the millions of OST shares that were obtained through non-bona fide securities offerings to the co-conspirators.
On June 26, 2025, Ostin investors suffered devastating losses when the selloff destroyed over $950 million (representing over 94%) of Ostin’s market capitalization in a single day. The stock plummeted from an intraday high of $9.40 to a closing price of $0.55.