Form 144 Affiliate Sale Notice Checklist
Form 144 is a notice of a proposed sale under Rule 144. It can be useful evidence, but it is not the same thing as a completed sale. Use this checklist to separate filing threshold, issuer reporting status, holding-period context, broker mechanics, recent related sales, and later Form 4 or Form 5 confirmation.
Last reviewed: June 16, 2026
Six checks before using Form 144 as insider-sale evidence
Proposed sale, not proof of execution
SEC Form 144 is titled Notice of Proposed Sale of Securities. Rule 144 also says the person filing the notice must have a bona fide intention to sell within a reasonable time after filing.
Affiliate threshold
Investor.gov says an affiliate files Form 144 when the amount to be sold under Rule 144 during any three-month period exceeds 5,000 shares or units or has an aggregate sales price above $50,000.
EDGAR filing path
SEC guidance says certain Forms 144 for reporting-company securities must be filed electronically on EDGAR, with the compliance requirement effective April 13, 2023.
Rule 144 safe-harbor conditions
eCFR Rule 144 frames the rule as a safe harbor and includes issuer public-information, holding-period, volume, manner-of-sale, and notice conditions depending on the seller and security.
Form fields and sale mechanics
SEC Form 144 asks for the seller relationship, broker or market maker, amount to be sold, aggregate market value, outstanding amount, approximate sale date, exchange, acquisition history, and past three-month sales.
Cross-check later filings
Because Form 144 is a proposed-sale notice, investors should compare it with later Forms 4 or 5, EDGAR company filings, and any Rule 10b5-1 plan date disclosed on the form.
Form 144 review workflow
Start with the filer and relationship to issuer
SEC Form 144 asks for the name of the person for whose account the securities are to be sold and that person's relationship to the issuer, such as officer, director, 10% stockholder, or immediate-family member. Do not skip this field when deciding whether the filing is an affiliate-sale signal.
Open source: SEC Form 144Check whether the Form 144 threshold is actually met
Investor.gov states that an affiliate must file Form 144 when the Rule 144 amount to be sold during any three-month period exceeds 5,000 shares or units or has an aggregate sales price above $50,000. Smaller proposed sales can be outside the notice requirement.
Open source: Investor.gov Form 144 glossaryTreat it as a proposed sale until execution is confirmed
Rule 144(h) says Form 144 is transmitted concurrently with placing a broker order or directly executing with a market maker, and that the filer must have a bona fide intention to sell within a reasonable time. That is different from proof that every share listed was sold.
Open source: eCFR Rule 144Read the issuer status and Rule 144 conditions
Rule 144 distinguishes reporting issuers from non-reporting issuers and includes conditions such as adequate current public information, holding period, volume limits, manner of sale, and notice of proposed sale. A Form 144 headline without that context can overstate the signal.
Open source: eCFR Rule 144Reconcile amount, market value, and recent sales
SEC Form 144 asks for the amount to be sold, aggregate market value as of a specified date within 10 days before filing, the amount outstanding from the issuer's most recent report or statement, and securities sold during the past three months. Those fields are the first place to check scale.
Open source: SEC Form 144Look for later Form 4 or Form 5 confirmation
Form 144 can disclose an intended Rule 144 sale and may include a Rule 10b5-1 plan date, but investors still need later ownership-change filings or EDGAR records to verify what actually happened and whether the sale changed the insider's exposure.
Open source: SEC EDGAR search
Official sources used
Investor.gov Form 144 glossary
Explains the Form 144 affiliate threshold, three-month measurement, $50,000 aggregate sales-price threshold, bona fide intention language, and EDGAR availability.
SEC Rule 144 investor guide
Summarizes restricted and control securities, affiliate volume limits, ordinary brokerage transactions, notice filing, and restrictive legend context.
SEC electronic Form 144 guide
Explains electronic Form 144 filing on EDGAR for reporting-company securities and EDGAR account requirements.
SEC Form 144
Provides the official notice form, seller relationship fields, broker fields, amount and market-value fields, acquisition table, recent-sales table, and Rule 10b5-1 plan-date field.
eCFR Rule 144 and Form 144 rules
Codifies Rule 144 conditions and Form 144 notice requirements for reporting and non-reporting issuers.
Form 144 FAQ
Does Form 144 prove that an insider already sold?
No. Form 144 is a proposed-sale notice. It can indicate a bona fide intention to sell, but the executed transaction should be checked against later ownership-change filings and EDGAR records.
When does an affiliate Form 144 notice matter?
Investor.gov describes the affiliate threshold as more than 5,000 shares or units or more than $50,000 aggregate sales price during any three-month period under Rule 144.
What should I read with Form 144?
Read the issuer's latest 10-K or 10-Q for public-information context, later Form 4 or Form 5 filings for execution, and any disclosed Rule 10b5-1 plan date before turning the notice into an investment signal.
This page is general investor education, not financial advice, legal advice, tax advice, filing advice, or a recommendation to buy, sell, copy, avoid, or trade any security or insider. Form 144 can disclose a proposed sale notice under Rule 144; it does not by itself prove a completed sale, insider motive, current valuation, future performance, or portfolio suitability.
Compare with the Form 4 insider transaction checklist
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