A company can repurchase shares through the following methods:
Tender offer allows the company to offer to buy back shares from existing security holders at a specified price.
Open market repurchases can be done through the stock exchange, following a book-building process.
Odd-lot holders (small shareholders) can also be targeted in a repurchase program.
However, buying shares through negotiated deals on the stock exchange is not a standard method for share buybacks. This method is not allowed as it would be considered a form of insider trading.


