What is an SEC Form 144?
An SEC Form 144 is a notice a company insider or affiliate files when they intend to sell restricted or control stock. It signals a planned sale, which may or may not happen.
Who files a Form 144
Affiliates of a company, such as officers, directors, and large shareholders, file a Form 144 before selling restricted or control securities under SEC Rule 144.
Why it matters
A Form 144 is a heads-up about intended selling. It is not proof a sale happened, because plans can change. Watching whether a Form 144 is later followed by a Form 4 shows whether the insider actually sold.
How QuantConomy surfaces it
QuantConomy reads Form 144 notices, links them to the issuer and filer, and can raise a PROPOSED_SALE signal, then track whether a matching Form 4 sale follows.
Questions
When is a Form 144 required?
A Form 144 is generally required when an affiliate plans to sell more than 5,000 shares or more than 50,000 dollars worth of stock within a three-month period. The thresholds are set by the SEC.
Does a Form 144 mean the insider sold?
No. It reports an intent to sell. The actual sale, if it happens, is reported separately on a Form 4.
See it in the product
QuantConomy turns this into ranked, source-linked signals for your dashboard and your AI agents. Early access is opening in stages.
Last updated June 3, 2026