When shares of stock in a corporation are sold from lots purchased at different dates and at different prices and the identity of the lots cannot be determined, the stock sold shall be charged against the earliest purchases of such stock. The excess of the amount realized on the sale over the cost or other basis of the stock will constitute gain.
When a dividend is paid with the stock of the dividend payor, the basis for determining gain or loss from the sale of shares of such stock shall be the difference between the sale price and the quotient (or result) of the cost or other basis of the original shares of stock divided by the total number of the old and new shares.
When common stock is received as a bonus with the purchase of preferred stock or bonds, the total purchase price shall be fairly apportioned between such common stock and the securities purchased for the purpose of determining the portion of the cost attributable to each class of stock or securities. However, should that not be feasible, no profit on any subsequent sale of any part of the stock or securities will be realized until the total cost is recovered from the sale proceeds.
When a corporation issues to its shareholders rights to subscribe to its stock, the value of the rights do not constitute taxable income to a shareholder, although gain may be derived or loss sustained by a shareholder from the sale of such rights. The following rules shall apply:
The taxpayer may, at its option, include the entire proceeds from the sale of stock rights in its gross income. The basis for determining gain or loss from the subsequent sale of stock with respect to which the rights were issued shall be the same as though the rights had not been issued.
2.26 Ark. Code R. 51-411