Section 16 Officer (Insider)

A Section 16 insider, often called a Section 16 officer, is a director or officer of a company with a class of equity registered under Section 12 of the Securities Exchange Act of 1934, or a beneficial owner of more than 10% of such a class, who must publicly report holdings and trades in the company's equity and is subject to the short-swing profit rules of Section 16(b).

Section 16(a) is the reporting obligation, carried out on Forms 3, 4, and 5. Section 16(b) is the profit-recovery provision aimed at insiders who buy and sell, or sell and buy, within a short window.

Full guide: How to Read SEC Form 4: Insider Buying and Selling Explained

"Officer" has a specific meaning under Rule 16a-1(f), and a job title does not settle it. The term covers the president, principal financial officer, principal accounting officer or controller, any vice president in charge of a principal business unit, division, or function, and anyone else who performs a significant policy-making function. People the company names as executive officers in its SEC disclosure are presumed to be Section 16 officers. For the 10% test, beneficial ownership follows the Section 13(d) rules, with carve-outs for brokers, banks, and other institutions holding securities for clients in the ordinary course of business.

Each form has its own deadline. Form 3, the initial statement, is due within 10 days of becoming an insider, or by the effective date of the registration statement when a company first registers its equity. Form 4 reports most changes and is due before the end of the second business day after the trade. Form 5 is an annual catch-up due within 45 days after the company's fiscal year end, covering exempt and small transactions not already reported, and is not needed if everything was reported earlier. Companies with a website must also post each Form 3, 4, and 5 by the end of the next business day and keep it accessible for at least 12 months.

For investors, Section 16 is what makes insider activity observable. GeminIQ's insider tracking is built on Form 4 data. For foreign private issuers, the current Form 3 instructions cover directors and officers but exclude holders of more than 10%.