Securities Industry Regulations Additional disclosure laws apply to the securities industry and to the ownership of securities. Officers, directors, and principal stockholders (defined as holding 10 percent or more of the company's stock) of publicly owned companies must submit two reports to the SEC. These are Form 3 and Form 4. Form 3 is a personal statement of beneficial ownership of securities of their company. Form 4 records changes in such ownership. These reporting requirements also apply to the immediate families of the company's officers, directors, and principal stockholders. Individuals who acquire 5 percent or more of the voting stock of a SEC-registered company, meanwhile, must also submit notification of that fact to the SEC.
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