I suspect insider trading by officers of a listed company whose registered office is in Kolkata; how do I file a SEBI complaint and what evidence is required?

You may file a complaint with the Securities and Exchange Board of India (SEBI) through its SCORES portal or by letter, detailing the suspected insider trading activity, the securities involved, the individuals suspected, and supporting evidence such as trade records or communications. SEBI has powers under the SEBI Act, 1992 and the SEBI (Prohibition of Insider Trading) Regulations, 2015, to investigate and adjudicate such matters. The complaint should be filed at the earliest, as SEBI may initiate a preliminary investigation upon receipt. You may also consider approaching the Calcutta High Court for directions to SEBI if no action is taken. The West Bengal Premises Tenancy Act 1997 on evidence and documentation may be relevant to the admissibility of your complaint. SEBI may impose penalties, debar individuals, or refer the matter for criminal prosecution if violations are established.