Charles Leung was born in Hong Kong and has spent his career in luxury jewellery, including some 18 years with LVMH. He joined Chaumet in December 2006 as managing director for Asia-Pacific, based in Hong Kong, until October 2012, when he moved to the Paris headquarters as vice-president of international sales and distribution, a post he held until 2018.
In November 2018 LVMH appointed him chief executive of FRED, making him the first Chinese, and the first Asian, executive to lead one of the group's houses. He was assisted by the artistic director Valérie Samuel, granddaughter of the founder. His tenure saw the move of the Tokyo boutique to Ginza in 2018, FRED's growth in China, the launch of the Pretty Woman collection in 2021, and the FRED Hero Cut, a 32-facet diamond cut evoking a sail and a shield, with the Force 10 Hero Cut bracelet in 2022.
In late 2023, in a reshuffle of LVMH's watches and jewellery division, he was named chief executive of Chaumet, the house where he had spent eleven years, succeeding Jean-Marc Mansvelt, who moved to Berluti; he took up the post in January 2024, aged 53, and remained interim chief executive of FRED until Vincent Reynes arrived that September. Chaumet, founded in 1780, is known as the jeweller of the Empress Joséphine.
Casadi has not verified his education or the employers before his LVMH career.