The capital market regulator in a statement said that it has already taken action against 221 such companies (as on December 15) for issuance of securities to public without complying with necessary laws.
According to the norms, any offer of securities made to 50 or more persons has to be construed as a 'Public Offer'.
The regulator has also taken action against entities/ individuals who have acted as debenture trustees for debt issuance of companies without being registered with Sebi.
Before investing in securities, the regulator advised investors to see whether offering companies have filed offer document or application with stock exchanges for listing.