Chinese mobile-security software maker NQ Mobile Inc’s Chief Financial Officer KB Teo resigned, citing family reasons, amid a buyout offer and a delay in filing its annual report. NQ Mobile said Teo’s resignation, effective Aug. 22, was not related to the company’s operations, policies or accounting practices. The company has faced repeated allegations of fraud from short-seller Muddy Waters Research Group. The company dismissed its independent auditor, PricewaterhouseCoopers Zhong Tian LLP, in July.