Under the cost method of recording treasury stock, the cost of treasury stock is reported at the end of the Stockholders' Equity section of the balance sheet. Treasury stock will be a deduction from the amounts in Stockholders' Equity.
Treasury stock is the result of a corporation repurchasing its own stock and holding those shares instead of retiring them.
In the general ledger there will be an account Treasury Stock with a debit balance. (At the time of the purchase of treasury stock, the corporation will debit the account Treasury Stock and will credit the account Cash.)