Form U4 is the Uniform Application for Securities Industry Registration or Transfer and is used to disclose registration, employment, disciplinary, criminal, financial, and regulatory information about associated persons. A bankruptcy protection filing within the past 10 years is a reportable financial event because it reflects financial compromise and potential financial stress relevant to regulatory review. Choice D is therefore correct. A new brokerage account may trigger firm notification or outside account procedures, but it is not itself a Form U4 reportable event. A change in marital status is personal information but is not a regulatory disclosure event on Form U4. A gambling-related misdemeanor charge is not automatically reportable unless it falls into a category required by Form U4, such as a felony or certain investment-related, theft-related, bribery-related, fraud-related, or financial misdemeanors. The SIE outline specifically lists “Form U4 and Form U5,” the consequences of misleading filings, and reportable events including “felony, financial-related misdemeanors, liens, bankruptcy.” This establishes bankruptcy as the tested disclosure item. Reference: Section 4.2.1 Employee Conduct; Section 4.2.2 Reportable Events.