Defence technology company DroneShield's admission last week has prompted significant investor backlash.

DroneShield has revealed that its CEO, chairman and director sold more than $2.4 million worth of shares in the company which it was cleared to sell from November 6 over several days. On November 12 the company withdrew an incorrect statement that it had signed a new $7.6 million deal with a US government client.

• Guest: Helen Bird, senior lecturer of law at Swinburne University and a member of  the ASIC Corporate Governance Panel
• Producer: Grace Stranger