The formation of international mergers is examined in the presence of two k
inds of asymmetric information, one when a local firm has private informati
on on market size and the other when a foreign firm has private information
on its technology. In each situation, parametric configurations are identi
fied under which a merger offer may or may not be made. It also examines th
e kind of offer and the probability of its acceptance. The likelihood of a
merger being formed is also related to the basic market size, demand uncert
ainty, and cost uncertainty. Welfare effects of tax/subsidy policies by the
host country are also analyzed.