Exit (owners selling their shares) and voice (owners active in corporate activities) are important ingredients in the process by which mass privatization changes managerial behaviour in transition countries. We examine the structure of ownership and the extent of exit and voice in one such country, Mongolia. We document the size of ownership changes since privatization (through mergers, spin-offs, and stock sales) and examine which owners are changing in importance. We scrutinize enterprise governance, examining patterns of violations of companylaw and deviations from reasonable criteria for effective governance. We show that ownership changes and the quality of governance are correlated.