Ethical Decision-Making in Personal Investments

John is a portfolio manager at a well-respected investment firm. He has been managing a fund that focuses primarily on technology companies. Recently, he received information about a private equity investment opportunity in a tech startup that is not yet publicly traded. This opportunity promises substantial returns.

While he finds the opportunity compelling, John is aware of the ethical guidelines established by the CFA Institute. He must consider his obligations to his existing clients who expect his full attention on their portfolios. He is also aware of the need to avoid any conflicts of interest.

If John decides to invest his personal funds in the tech startup without disclosing this investment to his clients, which of the following actions would best align with the CFA Institute's ethical obligations?