Sema4: Shawn Assad, Richard Miao

Sema4 said that its chief accounting officer, Shawn Assad, will resign, effective Aug. 30. According to a regulatory filing, the resignation is "not related to any disagreement with the company's accounting principles or practices or financial statement disclosures." When Assad leaves, current interim CFO Richard Miao — who also serves as deputy CFO and principal financial officer — will take over as Sema4's principal accounting officer.