The writ filed by Convoy, and seen by the South China Morning Post, claims HK$715m (£16m, $19m, €18m) in compensation is owed by former director Cho Kwai-chee and 12 others.
The compensation specifically relates to five transactions that led to Convoy suffering losses of HK$715m, the firm claims.
The writ follows two others that were filed in late December against Cho, former chairman Quincy Wong-Lee Man and 26 others for transferring assets from Convoy to their related parties and companies.
A court will hear the first writ on 6 March.
Cho targeted
Cho is a former director of Convoy Global and founder of Town Health International Medical Group, which had its offices raided by the market regulator earlier this week as part of the ongoing investigation into Convoy.
Convoy also convinced the British Virgin Islands authorities to freeze Cho’s assets held there.
Cho has been missing since regulators first raided Convoy’s office in December last year.
To date, four people have been arrested during the investigation, including Convoy’s former chairman Wong and Mark Mak Kwong-yiu, former chairman of a related financial services firm called Lerado.
In January, the second largest Convoy shareholder lashed out at the company’s chairman, calling him “rude”, for taking away his voting rights in a meeting where he had attempted to remove several members of the management team.