GreenTouch Projects Ltd (GTPL) was found to have allegedly violated the Debt Securities Regulations as well as provisions of the Companies Act.
In an interim order, Sebi has restrained GTPL and its three directors from accessing the securities market till further directions.
The watchdog has also directed the company not to mobilise funds from investors through offer for NCDs (Non-Convertible Redeemable Debentures) issuance of equity shares or any other securities.
The four directors who have been barred are Shyam Sundar Dey, Snehasish Sarkar, Sujoy Saha and Sumon Sarkar.
"GreenTouch Projects Debenture Trust (represented by its Trustee, viz Swagata Kumar Maiti) is prohibited from continuing with its present assignment as a debenture trustee in respect of the offer of NCDs of GTPL and also from taking up any new assignment or involvement in any new issue of debentures, etc, in a similar capacity," the order said.