Which of the following activities engaged in by a registered person is considered a private securities transaction?

Soliciting donations to a charity does not involve the offering or selling of securities. Instead, it pertains to charitable contributions, which are not classified as securities transactions. Therefore, this activity does not fall under the definition of a private securities transaction.

This activity is focused on selling insurance products, which are not considered securities. While there are regulated financial products involved, they do not fit the definition of private securities transactions as they are conducted under the auspices of an insurance company and not as a private investment in securities.

Investing personal money in shares of a listed security represents a personal investment decision and does not involve the facilitation of a transaction on behalf of others. Since the activity is an individual's own investment and not related to a private transaction for another party, it does not qualify as a private securities transaction.