Form 3(redirected from 3 Form)
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A form that an individual or company must file with the SEC after buying 10% or more of shares outstanding in a publicly-traded company or when an insider (one in possession of nonpublic knowledge) becomes affiliated with a company's operations. Form 3 exists to help prevent insider trading and monopolization.
An SEC form that directors, officers, and holders of 10% or more of a firm's stock are required to file. This form requires disclosure of all shares and all securities convertible into shares that are directly or beneficially owned by these people.