A beneficial owner is the natural person who ultimately owns or controls a legal entity or arrangement, such as a company, a trust, or a foundation. Identifying the beneficial owner is essential for preventing and detecting money laundering, terrorist financing, tax evasion, and other illicit activities that may involve the misuse of corporate vehicles. However, some individuals or entities may attempt to conceal the true beneficial ownership of a company by using various techniques, such as complex ownership structures, shell companies, bearer shares, or nominees. A nominee is a person or an entity that acts on behalf of another person or entity, usually for a fee or a commission, without disclosing the identity of the real owner or controller. Nominees can be used to protect or conceal the identity of the beneficial owner and controller of a company or asset. A nominee can help overcome jurisdictional controls on company ownership and circumvent directorship bans imposed by courts and government authorities. While the appointment of nominees is lawful in most countries, the use of nominees for money laundering purposes is illegal and a red flag for suspicious activity. Therefore, the person filling out an application on the company's behalf indicating that a beneficial owner is a nominee for another person not named in the company's documentation is an indicator that there is an attempt to conceal the company's true beneficial ownership12.
The other options are not necessarily indicators of concealment of beneficial ownership, as they may have legitimate explanations or reasons. The company having a subsidiary in another jurisdiction with a local investor as a beneficial owner may be a normal business practice or a strategic decision, as long as the ownership information is transparent and accurate. Recent changes to the company's ownership structure may reflect the company's growth, development, or adaptation to market conditions, as long as they are documented and reported to the relevant authorities. Beneficial ownership information from the time that the company was formed several years ago not matching the current information may be due to natural changes in the company's shareholders, directors, or managers, as long as they are updated and verified periodically.
References:
Concealment of Beneficial Ownership - Financial Action Task Force
What's a Beneficial Owner and Why Does it Matter? - Dun & Bradstreet
[ACAMS Study Guide, 6th Edition, Chapter 6, pp. 171-172]

Explanation/Reference: http://www.wolfsberg-principles.com/privat-banking.html (1.2.2, 5th bullet)