The sale was a result of lenders invoking shares pledged with them.
With this sale of shares, promoters' stake in the company has come down to 37.57 per cent from 41.91 per cent earlier.
At the current market price, the value of stock sold comes around Rs 59 crore.
The company has been reeling under a debt of around Rs 47,000 crore and has opted for invoking bankruptcy proceedings. The matter is sub-judice.
The shares of RCom on Wednesday closed at Rs 4.91 a unit, down by 4.1 per cent, at the BSE