Glossary

Form 144

Form 144 is a notice that certain company insiders and affiliates file with the SEC to announce their intent to sell restricted or control securities under Rule 144.

What Is Form 144?

Form 144 is a notice that certain people must file with the U.S. Securities and Exchange Commission (SEC) before selling a significant amount of stock in a company they are closely tied to. It is filed by affiliates of a company, such as executives, directors, and large shareholders, when they want to sell restricted securities or other control securities under Rule 144. The form tells the SEC and the public the number of shares to be sold, the approximate sale date, the broker handling the sale, and how the shares were originally acquired.

How It Works

The notice is filed electronically through the SEC's EDGAR system at the time the seller places the sell order. It is required only when the sale exceeds certain volume thresholds within a three-month period. Form 144 is a notice of intent, not a report of a completed trade. When the sale actually happens, the insider typically reports it on Form 4, which is due within two business days. The notice does not approve or guarantee the sale. The seller must still meet the other conditions of Rule 144, such as the holding period and volume limits.

Why It Matters to Investors

Form 144 filings are public, so investors can see when insiders plan to sell. Some investors watch these filings as one piece of information about insider activity. A sale can happen for many reasons unrelated to a company's prospects, such as diversification, taxes, or personal financial needs. Filing a Form 144 does not mean the sale will be completed, and the seller may not go through with it. Investors often read these filings alongside company disclosures and the rules governing insider trading to get a fuller picture.

Updated November 4, 2026. For general education only; not financial, tax or legal advice.

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Related Terms

Securities and Exchange Commission (SEC)

The Securities and Exchange Commission (SEC) is the U.S. federal agency that regulates securities markets, enforces federal securities laws, and requires public companies to disclose financial information to investors.

Affiliate

An affiliate is a company linked to another through common ownership or control, such as a parent, subsidiary, or sister company, with the degree of influence determining how the relationship is treated.

Form 4

Form 4 is a U.S. Securities and Exchange Commission filing that company insiders submit to report changes in their ownership of the company's equity securities, usually within two business days.

Insider Trading

Insider trading is buying or selling a security while in possession of material, nonpublic information about it, which is illegal in many markets when it breaks a duty of trust or confidence.

Rule 144

Rule 144 is a U.S. Securities and Exchange Commission regulation that lets investors resell restricted and control securities into public markets without registration, if specified conditions are met.

Holding Period

The holding period is the length of time an investor owns a security, measured from the day it was acquired to the day it is sold or otherwise disposed of.

Electronic Data Gathering, Analysis, and Retrieval (EDGAR)

EDGAR is the online database operated by the U.S. Securities and Exchange Commission where public companies and others file required disclosure documents, which anyone can search and read for free.