Sema4: Isaac Ro, Richard Miao

Sema4 CFO Isaac Ro will leave the company on Aug. 9, the company announced. Current Deputy CFO Richard Miao was named interim CFO, effective immediately. Ro, who will remain on Sema4's board until his departure, will provide consulting services to Sema4 for six months while the company searches for a permanent replacement. Ro's departure is "not related to any disagreement with the company's accounting principles or practices or financial statement disclosures," the company said in a statement.