Michael, a financial analyst, is reviewing his investment transactions at the end of the year. He has personal investments in some of the companies he covers. Recently, he received a highly regarded buy recommendation on a stock from a research firm, and he immediately executed a buy order for this stock for his personal portfolio.
Later, he published a research report suggesting others buy the same stock, but he failed to disclose his personal transactions. In this scenario, how should Michael have prioritized his transaction to align with the CFA Institute Code of Ethics and Standards of Professional Conduct regarding conflicts of interest?