"do block trades resister in the daily volume?"

See, that much I don't know. Can they do it in secrecy?

My point being is, can HL pick up shares of RVX ( from another insider) to put them over the 50% threshold without shareholders' approval? They do have a licence for ABL and perhaps they can manage an NMPA approval to market ABL for CHF.

"NMPA - National Medical Products Administration. The National Medical Products Administration (NMPA) is the Chinese agency for regulating drugs and medical devices (formerly the China Food and Drug Administration or CFDA)."

Koo