The Osmonds returned to the stage March 9 after funeral services for 18-year-old Michael Bryan.
Los Angeles police have said Bryan died Feb. 26 of an apparent suicide after jumping from the eighth floor of an apartment building. Autopsy and toxicology results are pending.
Nierob says the Osmonds will miss five shows before the Donny & Marie show resumes performances March 23. The show is dark Sundays and Mondays.