Those prohibited from the markets including Singh's son Rajiv Singh (Vice Chairman) and daughter Pia Singh (Whole Time Director), Sebi said in its order.
"I find that the case of active and deliberate suppression of any material information so as to mislead and defraud the investors in the securities market in connection with the issue of shares of DLF in its IPO is clearly made out in this case," Sebi's Whole-Time Member Rajeev Agarwal said in his 43-page order.
"I am satisfied that the violations as found in this case are grave and have larger implications on the safety and integrity of the securities market.
"In my view, for the serious contraventions as found in the instant case, effective deterrent actions to safeguard the market integrity. It, therefore, becomes incumbent to deal with contraventions, digression and demeanour of the erring Noticees sternly and take appropriate actions for effective deterrence," Agarwal said.
The company and its top executives are found to have violated various regulations including Sebi's Disclosure and Investor Protection (DIP) Guidelines and the PFUTP (Prevention of Fraudulent and Unfair Trade Practices) norms.
As per the order, those facing the ban include T C Goyal (Managing Director),  Kameshwar Swarup and Ramesh Sanka. All of these persons, including K P Singh and his two children, were part of the top management at the time of filing IPO documents.
About G S Talwar, who was also a non-executive director at that time, Sebi said it could not be established whether he was involved in day-to-day operations of the company and and therefore it was giving him "benefit of doubt".
DLF had raised Rs 9,187 crore through its IPO in 2007.

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