HONG KONG (REUTERS) - Hong Kong Exchanges and Clearing Ltd (HKEX) will announce new listing rules for companies including those with dual-class shares on Tuesday (April 24), its chief executive said.

The new listing rules will become effective from April 30, Charles Li told reporters.

The new rules will pave the way for more stock market debuts by early-stage biotech companies, and encourage companies listed overseas to consider Hong Kong as a secondary listing venue.

The exchange in February published details of the proposed rule changes.