Minority shareholders of Essar Oil, who had participated in the company's delisting in 2015, will get an additional Rs 75.48 per share, Essar said in a statement.
This would be in addition to Rs 262.80 per share they had got on delisting.
Rosneft bought 49.13 per cent in Essar Oil and a consortium of European trader Trafigura and Russian fund UCP a similar stake in the USD 12.9 billion deal.
"Essar Energy Holdings Ltd (EEHL) and Oil Bidco (Mauritius) Ltd (OBML), the promoters of Essar Oil Ltd (EOL), are pleased to announce that they will pay to former minority shareholders, who tendered EOL shares in the delisting offer, an additional amount of Rs 75.48 per share, based on the current closing numbers," the statement said.
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The payment of around Rs 880 crore will be in addition to the Rs 3,064 crore that the minority shareholders had got following EOL's delisting in 2015.
Stating that the Rosneft-Essar Oil transaction created many records, he said the additional payout to shareholders over and above the delisting price is another first in the history of corporate India.
"This resonates with our philosophy of rewarding shareholders handsomely," he said.
EOL was valued at Rs 2,000 crore around the time of its listing in 1995, and has now been valued at about Rs 50,400 crore, a growth of 2,420 per cent.
EEHL Director Dhanpat Nahata said: "Essar Energy has created value not only for itself but also for the minority shareholders. The additional payment to minority shareholders is unprecedented as they got exit and liquidity upon delisting in December 2015, retained the upside from the transaction that has closed 20 months later, without carrying any downside risk."
The promoters will shortly issue a public notice and the additional payout will be made within two months thereafter.
In the delisting, of the 14.25 crore shares held by public shareholders, OBML acquired 11.66 crore shares as against the requirement of 9.26 crore shares for delisting.
With the additional payout, the total price paid represents a premium of about 132 per cent.