According to the Model Code for Securities Transactions by Directors of Listed Issuers in Hong Kong Listing Rules, how must a listed issuer handle a director’s share sale under exceptional circumstances?

ID : 1906
Long answer : The issuer must announce the sale and justify exceptional circumstances. (Source: https://en-rules.hkex.com.hk/sites/default/files/net_file_store/HKEX4476_3785_VER31169.pdf)
Short answer : Publish an announcement immediately.
answer 2 : Report after 6 months.
answer 3 : Disclose only to regulators.
answer 4 : Keep it confidential.