Personally I don't really agreed with the comment. First, the insider is selling their share based on the guideline. Second, as a successful person must also be successful in personal financial plan. Thus, selling at good price for more income is normal. Furthermore, the CEO is also an investor! So, the person who do the analysis/study has the tendency of always hoping people to help while they are not in good term (my personal analysis). The company decided to buy back at high price is showing they have confident with their performance.
Insiders Sell Stock. Their Companies Buy. It's Not a Good Sign
$AIA(01299)$A stock that could be considered to invest for long or medium term. Personal observation is it has it quarterly movement around the quarterly result announcement.