Any director, executive officer, or beneficial owner of greater than 10% of a class of registered equity securities of a public company. These people are subject to ownership reporting obligations and trading limitations under Section 16. See Form 3, Form 4, Form 5, Section 16, and short-swing profits.

For more information, see Practice Note, Section 16 Reporting: Why, How, and When to Do It and Section 16(b) Short-Swing Profit Liability: The Perils of Turning a Quick Profit.