Guotai Junan International Holdings Ltd. has brought in a former senior equity capital markets banker to lead share sales after last month’s raids in Hong Kong that shook the city’s financial sector, according to people familiar with the matter.

Hong Kong’s financial regulators and anti-graft agency arrested eight people as part of an investigation into a HK$315 million ($40 million) insider dealing and corruption scheme involving two major brokerages and a hedge fund manager.