Corporation was originally a C Corp established in 1988. It converted to a S Corp in 2011 and the capital stock was $273,000. This amount did not change from inception. There are two equal shareholders. What would the shareholder basis be? Would it be 1/2 of $273,00 each and then make adjustments on Sch. K-1's for income and losses, etc from 2011 on? There were no other contributions after inception.