What Is a Form 144 in Stocks? The 2026 Guide
Form 144 is the SEC's formal advance notice that a company insider or restricted-stock holder intends to sell shares that have not been registered under the Securities Act of 1933. It sits at the intersection of insider transparency and market integrity, and understanding it matters whether you're the executive planning a sale or the analyst who just spotted one on EDGAR.
This guide covers what Form 144 is, why it exists, who must file it, and what it signals, without duplicating the step-by-step filing mechanics covered in our Form 144 SEC Filing Instructions: 2026 Practitioner Walkthrough.
What Is Form 144 and Why Does It Exist?
Form 144 is formally titled the "Notice of Proposed Sale of Securities Pursuant to Rule 144 under the Securities Act of 1933." Its purpose is transparency: before an insider or restricted-stock holder sells shares that bypass the normal registration process, the SEC and the market get advance notice of the planned transaction.
The form exists because the Securities Act of 1933 generally requires that securities be registered before they can be sold publicly. Rule 144 carves out a safe harbor from that requirement, but only if specific conditions are met. Form 144 is one of those conditions for affiliates, and it is the mechanism that makes the safe harbor visible to regulators and investors alike.
Without Form 144, a CEO could quietly sell millions of dollars of stock without any advance public signal. The form changes that dynamic.
Restricted Securities vs. Control Securities: A Critical Distinction
Most readers conflate these two categories. They are different, and the difference determines whether Rule 144 applies to you.
Restricted securities are shares acquired in unregistered, private transactions from the issuer or an affiliate. Common examples include:
- Shares received through private placements or Regulation D offerings
- Stock acquired via employee compensation plans before a public offering
- Securities from PIPE (private investment in public equity) transactions
- Shares acquired under Regulation S
Restricted securities carry a restrictive legend on the certificate (or an equivalent book-entry notation) and cannot be freely resold without registration or an applicable exemption.
Control securities are shares held by an affiliate of the issuer, regardless of how they were acquired. An executive who buys 500,000 shares in the open market holds control securities, even though those shares were purchased freely. The moment an affiliate owns them, Rule 144's resale conditions apply.
Key takeaway: Affiliation, not acquisition method, is what makes shares "control securities." An insider can buy stock on the open market and still need to file Form 144 before selling it.
Who Is an "Affiliate" for Rule 144 Purposes?
An affiliate is a person who controls, is controlled by, or is under common control with the issuer. In practice, this means:
- Officers and directors of the company
- Shareholders beneficially owning 10% or more of a class of voting securities
- Venture capital or private equity funds that own more than 10% of the company's stock, or whose principals sit on the board
Affiliation is a facts-and-circumstances determination, not a bright-line rule. A person who recently left a director role may still be treated as an affiliate for a period after departure.
Non-affiliates who hold restricted securities are subject to Rule 144's holding-period and current-information requirements but are not required to file Form 144. More on that below.
The Five Conditions of Rule 144
Form 144 is one piece of a five-part framework. Rule 144 requires all of the following conditions to be satisfied before restricted or control securities can be resold without registration:
| Condition | Applies to Affiliates | Applies to Non-Affiliates |
|---|---|---|
| 1. Current public information about the issuer | Yes | Yes (during 6-12 month window) |
| 2. Minimum holding period (6 months for reporting companies; 1 year for non-reporting) | Yes (restricted securities) | Yes |
| 3. Volume limitations | Yes | No (after 1-year hold) |
| 4. Manner-of-sale requirements | Yes | No |
| 5. Form 144 filing (above the threshold) | Yes | No |
Non-affiliates who have held restricted securities of a reporting company for at least one year can sell freely, with no volume cap, no manner-of-sale restriction, and no Form 144 filing required.
What Triggers a Form 144 Filing?
An affiliate must file Form 144 when planned sales of the same class of securities exceed 5,000 shares OR $50,000 in aggregate value within any three-month period. Both thresholds are measured cumulatively across all sales in that window, not per transaction.
If a CFO sold 3,000 shares last month and plans to sell 3,000 more this month, the combined 6,000 shares cross the 5,000-share threshold and trigger a filing requirement, even if each individual sale was below it.
If the combined sales stay below both thresholds, no Form 144 is required, but all other applicable Rule 144 conditions still apply.
The Holding Period Requirement
The clock starts when the securities were "fully paid for," not when they were granted or vested. The minimum periods under Rule 144(d) are:
- 6 months for restricted securities of a company subject to SEC Exchange Act reporting
- 1 year for restricted securities of a non-reporting company
Affiliates selling control securities (open-market purchases) are not subject to a holding period for those shares, but they are still subject to volume limits, manner-of-sale requirements, and the Form 144 filing obligation.
Tacking: Adding a Prior Holder's Period
One question the top search results consistently miss: can you inherit someone else's holding period? In limited circumstances, yes. "Tacking" allows a new holder to add the prior holder's holding period to their own. It applies in situations such as:
- Securities received as a gift
- Certain estate distributions
- Some conversions of one security into another (e.g., convertible notes into equity)
Tacking does not apply to arm's-length purchases. If you bought restricted shares from another investor, your clock starts fresh on the purchase date.
The Volume Cap: How Much Can an Affiliate Sell?
During any three-month period, an affiliate's sales are capped at the greater of:
- 1% of the outstanding shares of the class, or
- The average weekly reported trading volume during the four calendar weeks preceding the Form 144 filing
For debt securities, the cap is 10% of the principal amount of the tranche.
Worked example: Suppose a company has 10,000,000 shares outstanding, and the average weekly trading volume over the prior four weeks was 150,000 shares. The 1% cap is 100,000 shares. The average weekly volume cap is 150,000 shares. The affiliate may sell up to 150,000 shares in the three-month window because the trading-volume figure is higher.
For a deeper look at the aggregation rules and edge cases, see our Rule 144 Volume Limitations: A 2026 Practitioner Walkthrough.
The Manner-of-Sale Requirement
Affiliates selling equity securities under Rule 144 must use one of three approved transaction types:
- Brokers' transactions, where the broker does no more than execute the order and receives no more than the usual commission
- Direct transactions with a market maker
- Riskless principal transactions
Soliciting buyers directly is not permitted. This condition does not apply to non-affiliates.
When Must Form 144 Be Filed?
Form 144 must be filed no later than the time the sell order is placed with the broker. For direct (non-brokered) transactions, it must be filed no later than the time of execution.
Two timing rules matter:
- The filer must have a "bona fide intention to sell the securities within a reasonable time after the filing," per the SEC's own glossary. Form 144 cannot be used as a speculative placeholder.
- The sale must be completed within 90 days of the filing date. If it is not, a new Form 144 must be filed before proceeding.
The 90-day expiry is a common operational trap. An insider who files in January and then delays the sale for any reason, whether market conditions, a blackout period, or a change of plans, must refile if the window lapses.
How Form 144 Is Filed: The 2022 Electronic Mandate
Until 2023, most Form 144 filings were paper documents mailed to the SEC. That changed with SEC Release No. 33-11070, adopted June 17, 2022, which mandated:
- Mandatory electronic filing via EDGAR for all Form 144 submissions
- Inline XBRL structured data tagging for the form's content
- Full compliance required approximately six months after the SEC updated its EDGAR filer manual, placing the effective compliance date at April 13, 2023
For affiliates of reporting companies, the 2022 amendments also eliminated the requirement to send a paper copy of Form 144 to the primary stock exchange (NYSE, Nasdaq, etc.). Affiliates of non-reporting companies must still furnish a copy to the relevant exchange or market.
A practical consequence: every potential filer, including VC and PE fund principals who sit on public company boards, now needs their own EDGAR filing codes. Obtaining those codes can take anywhere from one day to two weeks depending on the SEC's processing backlog, so preparation matters.
Form 144 vs. Form 4: Two Different Obligations
This is one of the most common points of confusion for insiders, and none of the top search results address it directly.
| Feature | Form 144 | Form 4 |
|---|---|---|
| Legal basis | Securities Act of 1933 (Rule 144) | Securities Exchange Act of 1934 (Section 16) |
| Purpose | Advance notice of proposed sale | Report of completed transaction |
| Timing | Filed concurrently with placing the sell order | Filed within 2 business days of the transaction |
| Who files | Affiliates selling restricted or control securities above the threshold | Section 16 insiders (officers, directors, 10%+ shareholders) |
| What it covers | Proposed future sales | Actual completed purchases and sales |
| Forward or backward looking | Forward-looking (intent) | Backward-looking (completed fact) |
An insider selling restricted or control securities will often need to file both: Form 144 before placing the sell order, and Form 4 within two business days of the completed sale. They serve different regulatory purposes under different statutes.
For a full breakdown of Form 4 mechanics, see our Form 4 Transaction Codes Explained: All 20 SEC Codes.
Do I Need to File Form 144? A Decision Framework
Work through these questions in order:
-
Are you an affiliate of the issuer? (Officer, director, or 10%+ shareholder)
- No: skip to step 3.
- Yes: continue to step 2.
-
Will your combined sales of this class of securities exceed 5,000 shares or $50,000 in the current three-month period?
- No: Form 144 not required, but all other Rule 144 conditions still apply.
- Yes: Form 144 required. File via EDGAR concurrently with placing the sell order.
-
Are you a non-affiliate holding restricted securities?
- Have you held for at least 6 months (reporting company) or 1 year (non-reporting company)?
- No: you cannot sell under Rule 144 yet.
- Yes: Form 144 not required, but the current public information condition applies during the 6-to-12-month window.
-
Is the issuer a shell company or former shell company?
- Rule 144 is generally not available for resales of securities of shell companies under Rule 144(i). This is a significant trap for SPAC investors and blank-check company shareholders. Consult counsel before proceeding.
-
Does your company have an insider trading policy or active blackout period?
- Filing Form 144 does not override internal trading restrictions. A valid Form 144 filed during a company blackout period does not make the sale permissible under the company's own compliance program.
What Form 144 Signals to Investors and Analysts
Form 144 filings are publicly searchable on EDGAR, and sophisticated market participants monitor them actively. Here is what they actually tell you, and what they do not.
What a Form 144 filing signals:
- An affiliate intends to sell shares in the next 90 days
- The insider has satisfied (or believes they have satisfied) Rule 144's conditions
- The planned sale volume, the broker, and the method of sale are disclosed
What it does not signal:
- That the sale will actually happen (the 90-day window may lapse without a completed sale)
- That the insider is bearish on the company (sales often reflect personal liquidity needs, diversification, tax planning, or the exercise of expiring options)
A cluster of Form 144 filings from multiple insiders at the same company in a short window is widely read as a bearish signal by analysts. The academic and practitioner consensus is more nuanced: context matters enormously. A single executive selling a small fraction of their holdings after a long holding period is a very different signal from five insiders filing simultaneously after a stock run-up.
Form 144 also provides information unavailable on Form 4, including the broker handling the transaction and, importantly, details about Rule 10b5-1 plan adoption dates. For more on how insider filings interact with 10b5-1 plans, see our Rule 10b5-1 Plan Requirements 2026: What Changed and What to Do Now.
The Legend Removal Process
One practical step the top results consistently skip: before a restricted-stock sale can settle, the restrictive legend on the shares must be removed. This requires:
- A legal opinion letter from counsel confirming that Rule 144's conditions are met
- Submission of the opinion to the company's transfer agent
- The transfer agent coordinating with the broker to clear the shares for sale
This process takes time, often several business days to two weeks, and should be initiated well before the planned sale date. Filing Form 144 does not automatically remove the legend.
FAQ
What triggers a Form 144 filing? An affiliate must file Form 144 when planned sales of a class of securities exceed 5,000 shares or $50,000 in aggregate value within any three-month period. The filing must be made concurrently with placing the sell order.
Who is responsible for filing Form 144? The selling affiliate is legally responsible. In practice, many full-service brokers file on behalf of their clients, but since the April 2023 EDGAR mandate, the filer must have active EDGAR filing codes. Confirm with your broker whether they will file on your behalf and what credentials they require.
What is the difference between Form 144 and Form 144A? They are unrelated. Form 144 is the SEC notice for proposed sales of restricted or control securities under Rule 144. Rule 144A is a separate exemption that allows resales of restricted securities to qualified institutional buyers (QIBs) without SEC registration. Rule 144A transactions do not require a Form 144 filing.
Who does SEC Rule 144 apply to? Rule 144 applies to any person selling restricted securities (acquired in unregistered transactions) or control securities (held by affiliates). The specific conditions that apply, including volume limits, manner-of-sale rules, and the Form 144 filing obligation, vary depending on whether the seller is an affiliate and whether the issuer is a reporting company.
Is a Form 144 filing good or bad for the stock? It depends on context. A single Form 144 from one insider selling a small position is rarely meaningful. Multiple simultaneous filings from senior insiders following a significant stock price increase warrant closer attention. Form 144 signals intent, not completion, and many filed notices expire without a sale.
What happens if I don't complete the sale within 90 days? The Form 144 expires. You must file a new Form 144 before placing any subsequent sell order. Failing to refile and proceeding with a sale would mean the transaction falls outside the Rule 144 safe harbor, potentially making it an unregistered sale in violation of the Securities Act.
