On 24 April 2018, the Stock Exchange of Hong Kong Limited reached a conclusion on the Main Board listing requirements for:
(a) pre-revenue/pre-profit biotech companies
(b) innovative companies with weighted voting right structures, and
(c) innovative companies seeking a secondary listing in Hong Kong.
The requirements came into effect on 30 April 2018. Companies may submit a formal application for listing under the new regime on or after 30 April 2018.