Checkpoint Systems Inc. (NYSE:CKP) announced a change in CEOs two days after Christmas. But it wasn't the only company to switch CEOs in the merry month. Liberum, which tracks changes in CEOs and other C-level execs, said 224 changes were recorded in the CEO position during December, including Citigroup and Coca-Cola. For the fourth quarter, 664 changes were made at the top, compared with 611 for the same period of 2006.
