Form 144 vs Rule 144: The 2026 Comparison Guide

Every week, compliance teams at public companies confuse these two things, and the confusion has real consequences. Rule 144 is the legal exemption that lets insiders and restricted-security holders sell without registering. Form 144 is the notice filing that some, but not all, sellers must submit to the SEC before they sell. You can use Rule 144 without ever touching Form 144. And you can be required to file Form 144 for shares that aren't even restricted.

This guide draws the line precisely, walks through who files what and when, and covers the traps that every CFO, general counsel, and equity plan administrator needs to know in 2026.

Key takeaway: Rule 144 is the exemption framework under the Securities Act of 1933. Form 144 is a procedural notice triggered only for affiliate sales above a dollar or share threshold. Non-affiliates who have held restricted securities long enough can rely on Rule 144 without filing Form 144 at all.

Form 144 vs Rule 144: What Each One Actually Is

Rule 144 is codified at 17 CFR § 230.144. The SEC adopted it to resolve a fundamental ambiguity in securities law: when does a person who bought shares privately become an "underwriter" if they later resell? Without a clear answer, any secondary sale of privately placed stock risked being an unregistered distribution. Rule 144 solves this by creating a safe harbor. As the SEC's preliminary notes put it:

"Rule 144 creates a safe harbor from the Section 2(a)(11) definition of 'underwriter.' A person satisfying the applicable conditions of the Rule 144 safe harbor is deemed not to be engaged in a distribution of the securities and therefore not an underwriter."

Form 144 is the notice document filed with the SEC under Rule 144(h). Its formal title is "Notice of Proposed Sale of Securities Pursuant to Rule 144 Under the Securities Act of 1933" (SEC Form 1147, revised July 2022). It is not the exemption itself. It is a disclosure mechanism that tells the market an insider intends to sell.

The table below captures the core distinction:

Who Must File Form 144, and Who Does Not

Form 144 is required only for affiliates. A non-affiliate who has held restricted securities of a reporting issuer for at least one year can sell freely with no volume limits, no manner-of-sale requirements, and no Form 144. That is the most important practical distinction, and it is the one most explainer articles bury or miss entirely.

Here is the decision tree:

1. Are you an affiliate of the issuer? (An affiliate is someone who controls, is controlled by, or is under common control with the issuer, including directors, executive officers, and 10% shareholders.)

   • If no: you are selling restricted securities. Check the holding period below. If satisfied, no Form 144 required.
   • If yes: proceed to step 2.

2. Have you satisfied the holding period for the restricted securities you want to sell?

   • Reporting issuer: 6 months (reduced from 1 year by the 2008 SEC amendments, effective February 15, 2008).
   • Non-reporting issuer: 1 year.
   • Control securities (unrestricted shares held by an affiliate, e.g., open-market purchases): no holding period required, but all other Rule 144 conditions still apply.

3. Does your planned sale in the next 3 months exceed 5,000 shares or $50,000 in aggregate value?

   • If no: no Form 144 required, but you still must comply with all other Rule 144 conditions.
   • If yes: file Form 144 on EDGAR no later than the time you place the sell order with your broker.

Key takeaway: A non-affiliate who has held restricted securities of a reporting issuer for more than one year faces zero Form 144 obligation and no volume or manner-of-sale restrictions. The Rule 144 safe harbor still protects the sale, but the procedural notice requirement simply does not apply.

The Five Rule 144 Conditions: Affiliate vs. Non-Affiliate

Rule 144 imposes up to five conditions depending on whether the seller is an affiliate. The table below maps each condition to who it applies to:

A few points worth unpacking:

• Current public information means the issuer has been subject to Exchange Act reporting for at least 90 days and is current in its filings. If a company is delinquent on its 10-K or 10-Q, this condition blocks an affiliate's sale even if the holding period is long satisfied. Delinquency is a real blocking mechanism, not a technicality.
• Volume limitations for equity securities are 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 (or, if no Form 144 is required, the date of receipt of the order to execute). For debt securities, the limit is 10% of the principal amount of the tranche outstanding. See Rule 144 Volume Limitations: A 2026 Practitioner Walkthrough for worked calculations.
• Manner of sale applies only to affiliates selling equity securities. Sales must go through broker transactions (the broker executes as agent for usual commissions and cannot solicit buyers), directly with a market maker, or in riskless principal transactions. Debt securities sold by affiliates and all sales by non-affiliates are exempt from this requirement.

What Changed in 2023: The EDGAR Electronic Filing Mandate

The single most underappreciated change in the Form 144 landscape is the electronic filing mandate that took effect February 27, 2023, under SEC Release No. 33-11138 (adopted December 14, 2022).

Before that date, Form 144 could be filed on paper or by fax. Paper filings were not systematically aggregated or searchable. Since February 27, 2023, every Form 144 for a reporting issuer must be filed electronically via EDGAR. The SEC's own form instructions state:

"This Form must be filed in electronic format by means of the Commission's Electronic Data Gathering, Analysis, and Retrieval system (EDGAR) in accordance with the EDGAR rules set forth in Regulation S-T (17 CFR part 232)."

The exception: where the issuer is not subject to Exchange Act reporting requirements (Section 13 or 15(d)), Form 144 may still be filed in paper under Rule 144(h)(2).

The practical consequences are significant:

• Full public searchability. Any investor, journalist, or activist can search EDGAR for Form 144 filings by company or individual in near real-time. Insider sale intentions that were once buried in paper files are now visible within days.
• Market surveillance. Institutional investors and algorithmic traders monitor Form 144 filings as a leading indicator of insider sentiment. This is a reputational and market-impact consideration that compliance teams must factor into pre-clearance policies.
• Coordination with Form 4. Officers and directors who are Section 16 reporters often need to file both a Form 144 (under Rule 144) and a Form 4 (under Section 16) for the same transaction. The 2022 release also amended Form 4 to require disclosure of whether a transaction was made pursuant to a Rule 10b5-1(c) plan, creating a direct cross-reference between the two filings. See Form 4 Filing Deadline: The Two-Business-Day Rule (2026 Guide) for Form 4 mechanics.

Form 144 vs Rule 144: Filing Mechanics Compared

For affiliates who must file, here is what the Form 144 process looks like versus the underlying Rule 144 compliance obligations:

Rule 144 compliance (ongoing, substantive):

• Confirm affiliate status and the nature of the securities (restricted vs. control).
• Verify the holding period is satisfied (for restricted securities).
• Calculate the volume limit for the 3-month period using the 1%/4-week average test.
• Confirm the issuer is current in its Exchange Act filings.
• Ensure the sale will go through a qualifying broker or market maker.

Form 144 filing (procedural, triggered by threshold):

• File electronically on EDGAR no later than the time the sell order is placed with the broker (or the execution of a direct sale with a market maker).
• The filing covers proposed sales during the 90-day period following the filing date. If the sale is not completed within that window, a new Form 144 must be filed.
• The form requires: issuer name and SEC file number; seller's name and relationship to the issuer; securities class, broker details, number of shares, aggregate market value (as of a date within 10 days prior to filing), shares outstanding, approximate sale date, and exchange; Table I (acquisition details for the securities to be sold); Table II (all securities of the issuer sold by the person in the past 3 months); and a signed certification.

For step-by-step field-by-field instructions, see Form 144 SEC Filing Instructions: 2026 Practitioner Walkthrough.

The Aggregation Trap: Who Counts as "You" Under Rule 144

The volume limit applies not just to the individual seller but to the entire "person" as defined in Rule 144(a)(2). That definition is expansive:

• Any relative or spouse sharing the same home as the seller.
• Any trust or estate in which the seller and those relatives collectively own 10% or more of the total beneficial interest, or in which any of them serve as trustee or executor.
• Any corporation or organization (other than the issuer) in which the seller and those relatives are collectively beneficial owners of 10% or more of any class of equity securities or 10% or more of the equity interest.

In practice: if a CEO sells 50,000 shares personally and their spouse sells 20,000 shares through a family trust in which the CEO holds a 15% beneficial interest, both tranches count toward the CEO's volume limit for the quarter. Table II of Form 144 requires disclosure of all sales by persons included in this aggregated definition, which is why the instructions direct filers to report sales by all persons whose sales must be aggregated.

This is one of the most common compliance failures for executives with complex estate or trust structures.

Rule 10b5-1 Plans and Form 144: The Intersection

Form 144 includes a dedicated field: "Date of Plan Adoption or Giving of Instruction, if Relying on Rule 10b5-1." This is not cosmetic. It reflects the direct connection between the two regimes following the 2022 SEC amendments to Rule 10b5-1.

If an affiliate is selling under a Rule 10b5-1 trading plan, the Form 144 certification still applies. The seller signs that they have no knowledge of material adverse non-public information. The form's certification language reads:

"The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed."

For affiliates using 10b5-1 plans, the plan adoption date disclosed on Form 144 cross-references the cooling-off periods and conditions required under the amended Rule 10b5-1. Officers and directors must observe a cooling-off period of the later of 90 days after plan adoption or the first quarterly earnings release date following adoption (up to 120 days). See 10b5-1 Plan Modification Rules: A 2026 Practitioner Walkthrough for the full cooling-off mechanics.

Three Traps That Catch Insiders Off Guard

1. The Pledged-Securities Clock Reset

The Rule 144 holding period begins when the securities were "fully paid for." If an executive pledges shares as loan collateral and the lender forecloses, the foreclosure is treated as a new acquisition. The holding period clock restarts from zero. Executives who pledge shares and later face a margin call or foreclosure may find themselves holding shares they cannot sell under Rule 144 for another six months. See Rule 144 Holding Period: 2026 Practitioner Walkthrough for the full tacking rules.

2. The 90-Day Expiry

A Form 144 covers proposed sales during the 90-day period following the filing date. If market conditions change and the planned sale does not execute within that window, the filing expires. A new Form 144 must be submitted before any further sales can proceed. Compliance teams that treat Form 144 as a one-time checkbox rather than a time-limited notice routinely miss this.

3. The Anti-Evasion Provision

Rule 144 is a safe harbor, not a loophole. The SEC's preliminary notes state explicitly:

"The Rule 144 safe harbor is not available to any person with respect to any transaction or series of transactions that, although in technical compliance with Rule 144, is part of a plan or scheme to evade the registration requirements of the Act."

Technical compliance with every condition does not protect a seller who structures transactions to circumvent registration. This provision is almost never mentioned in practitioner guides, but it is the SEC's backstop against creative workarounds.

Rule 144 vs Rule 144A: A Different Comparison Entirely

A common search query conflates Rule 144 and Rule 144A. They are unrelated in purpose:

Rule 144A is a separate exemption under the Securities Act that permits resale of restricted securities to QIBs without registration and without any of the Rule 144 conditions. It does not involve Form 144. If your transaction involves institutional buyers and large-block private placements, Rule 144A is the relevant framework, not Rule 144.

Is a Form 144 Filing Bullish or Bearish?

From a market-signal perspective, Form 144 filings are widely read as a bearish indicator, but the picture is more nuanced than that.

• Planned sales under 10b5-1 plans are often set up months in advance during open windows, when the insider had no adverse information. The Form 144 field disclosing the plan adoption date provides context that a spontaneous sale does not.
• Diversification and liquidity needs drive many insider sales that have nothing to do with the insider's view of the company's prospects.
• Volume relative to total holdings matters. A CEO selling 2% of their position reads differently from one selling 80%.

Since the 2023 EDGAR mandate made Form 144 filings fully searchable in near real-time, the market's ability to react to these signals has increased. Compliance teams should factor this transparency into their insider trading policies and pre-clearance windows. For a deeper look at what insider filings signal, see What Is a Form 144 in Stocks? The 2026 Guide.

FAQ

Is Form 144 the same as Rule 144? No. Rule 144 is the legal exemption from registration under the Securities Act of 1933. Form 144 is the procedural notice an affiliate files with the SEC when planning to sell above the 5,000-share or $50,000 threshold. You can use Rule 144 without filing Form 144 if you are a non-affiliate who has held the securities long enough.

Who is required to file Form 144? Affiliates of the issuer (directors, officers, 10% shareholders, and their aggregated family members, trusts, and controlled entities) who plan to sell more than 5,000 shares or securities with an aggregate sale price exceeding $50,000 in any three-month period. Non-affiliates are never required to file Form 144.

Can a non-affiliate sell restricted securities under Rule 144 without filing Form 144? Yes. A non-affiliate who has held restricted securities of a reporting issuer for at least six months is subject only to the current public information condition. After one year, the non-affiliate can sell with no volume, manner-of-sale, or Form 144 requirements whatsoever.

When exactly must Form 144 be filed? No later than the time the sell order is placed with a broker, or the execution of a direct sale with a market maker. The filing covers the 90-day period following the filing date. If the sale does not complete within 90 days, a new Form 144 is required.

What is the difference between restricted securities and control securities? Restricted securities are acquired in unregistered, private transactions (e.g., private placements, Regulation D offerings). Control securities are shares held by an affiliate, regardless of how they were acquired, including open-market purchases that carry no legend. Both categories require Rule 144 compliance when sold by an affiliate, but for different reasons. Affiliates often overlook that their unrestricted, open-market shares are still "control securities" subject to Rule 144 volume and manner-of-sale conditions.

Does filing Form 144 guarantee the sale is legal? No. The form's own instructions note that filing does not guarantee permissibility. Rule 144 conditions must independently be satisfied. And the anti-evasion provision means that technical compliance with every condition still does not protect a transaction that is part of a scheme to evade registration.