What Is a Free Writing Prospectus? SEC Rules and Eligible Issuers

A free writing prospectus is any written offering communication about a registered securities offering that goes beyond what appears in the statutory prospectus filed with the SEC. Created by Rule 433 as part of the 2005 Securities Offering Reform, it gives issuers and underwriters a way to share term sheets, updated pricing, roadshow materials, and responses to market developments without amending the registration statement, provided the communication meets conditions on eligibility, legends, filing, and consistency with what is already on file.¹

Rule 164 supplies the legal safe harbor that makes this possible. A free writing prospectus that satisfies Rule 433’s conditions is treated as a Section 10(b) prospectus for purposes of Section 5(b)(1) of the Securities Act, so the communication is not treated as an illegal unregistered offer.²

How It Differs From the Statutory Prospectus

The statutory prospectus is the comprehensive Section 10(a) disclosure document. It covers the issuer’s business, financial statements, risk factors, use of proceeds, and terms of the securities, and investors must receive it before or at the time of sale. Nothing replaces it.

A free writing prospectus supplements that baseline. It can focus on a single topic — a revised price range, a response to a competitor’s earnings report, updated projections — without repeating the full disclosure package. It can include information that is not in the registration statement. What it cannot do is contradict the registration statement or the statutory prospectus. Supplement, don’t override.¹

Timing is more flexible too. A free writing prospectus can be used at any point after the registration statement is filed, giving issuers a communication channel throughout the marketing window rather than only at the point of sale.

Who Can Use One

Eligibility depends on the issuer’s size, reporting history, and clean record. The SEC gives the most flexibility to the largest and most established filers.

Well-Known Seasoned Issuers

Well-known seasoned issuers (WKSIs) sit at the top. To qualify, an issuer must meet the registrant requirements of Form S-3 or Form F-3 and satisfy one of two financial thresholds: a worldwide public float of $700 million or more in voting and non-voting common equity held by non-affiliates, or at least $1 billion in aggregate principal amount of non-convertible securities issued in registered primary offerings over the preceding three years. An issuer qualifying only under the second test can register non-convertible securities unless it also independently meets the public float test.³

WKSIs get the most relaxed treatment under the free writing prospectus rules, though the core obligations around legends, filing, and non-contradiction still apply.⁴

Seasoned and Unseasoned Issuers

Seasoned issuers eligible to use Form S-3 or Form F-3 for primary offerings can also use a free writing prospectus, with an added condition: the free writing prospectus must be accompanied or preceded by the most recent statutory prospectus that satisfies Section 10. For electronic communications, an active hyperlink to the statutory prospectus on EDGAR generally satisfies this.¹

Unseasoned and non-reporting issuers face the strictest prospectus-delivery condition. Once the registration statement is effective and a final Section 10(a) prospectus is available, only that final prospectus can satisfy the delivery condition; an earlier preliminary version no longer counts.¹

Ineligible Issuers

Rule 405 shuts certain issuers out of the free writing prospectus framework entirely. An issuer is ineligible if any of the following apply:

The issuer has not filed all required reports under the Securities Exchange Act during the preceding 12 months.
The issuer is, or within the past three years was, a blank check company or a shell company (other than a business combination shell).
The issuer is offering penny stock as defined under the Exchange Act rules.
A bankruptcy petition was filed by or against the issuer within the past three years, or a court appointed a receiver for the issuer’s business or property.
The issuer or a subsidiary was convicted of specified felonies or misdemeanors, or violated the anti-fraud provisions of the federal securities laws. This disqualification lasts three years.³

The Required Legend and the Non-Contradiction Rule

Every free writing prospectus must carry a legend prescribed by Rule 433(c)(2). The legend tells the reader that the issuer has filed a registration statement (including a prospectus) with the SEC, recommends reading the prospectus and other filed documents before investing, and explains how to access them for free on EDGAR at sec.gov. It must also provide a toll-free phone number (optionally an email address or website link) where investors can request the prospectus.¹

The content rule is straightforward on paper and unforgiving in practice: nothing in the free writing prospectus can conflict with the registration statement or the statutory prospectus. New information is fine. Contradictory information is not. A stray sentence about projected returns or revised deal terms that clashes with the registration statement can create serious problems.

Filing and Record-Keeping

The filing rules under Rule 433(d) turn on who prepared the free writing prospectus and how widely it was distributed.

Issuers must file any free writing prospectus they prepare with the SEC no later than the date of first use. That includes any issuer information contained in a free writing prospectus assembled by another offering participant such as an underwriter. Once the final terms of the securities are set, the issuer must also file a description of those final terms. The SEC’s Division of Corporation Finance has confirmed the filing obligation applies even when the free writing prospectus merely repeats information already in the registration statement.⁵

Underwriters, dealers, and other offering participants who are not the issuer file only when they distribute a free writing prospectus in a manner reasonably designed to lead to its broad unrestricted dissemination. A document shared privately with a small group of institutional investors typically does not trigger the non-issuer filing obligation. One posted on a public website does.¹

Free writing prospectuses that are not filed still have to be kept. Rule 433(g) requires issuers and offering participants to retain unfiled free writing prospectuses for three years following the initial bona fide offering of the securities.⁶

Common Uses During an Offering

In practice, issuers reach for the free writing prospectus when the statutory prospectus is too slow or too broad. Term sheets summarizing key deal terms, updated pricing information, and responses to investor questions during the marketing period are typical examples. When market conditions shift between filing and closing, a free writing prospectus lets the issuer get updated information out without amending the entire registration statement.

Roadshows are another major use case. A prerecorded electronic roadshow is classified as a free writing prospectus, but outside the context of initial public offerings of common or convertible equity it generally does not need to be filed. For IPOs of common or convertible equity, the filing requirement applies, unless the issuer makes the roadshow available to any person without restriction, which satisfies a separate accommodation in the rules.

Live, in-person roadshow presentations are not written communications, so they fall outside the free writing prospectus framework entirely. The moment a presentation is recorded or a slide deck is distributed, though, it becomes a written communication and the rules apply.

Safe Harbors for Minor Mistakes

Rule 164 includes three safe harbors intended to keep technical slip-ups from unraveling an offering. They cover only unintentional failures; deliberate noncompliance does not qualify.

If an issuer makes a good-faith and reasonable effort to file on time but misses the deadline, the offering does not violate Section 5 as long as the free writing prospectus is filed as soon as practicable after the error is discovered.
If the required legend is accidentally left off, the issuer must add it as soon as practicable. If the document was already distributed without the legend, it must be retransmitted with the legend to substantially the same recipients by substantially the same means.
An unintentional failure to retain a free writing prospectus does not result in a Section 5 violation if the issuer made a good-faith effort to comply with the retention requirement.

These safe harbors have real limits. “Good faith and reasonable effort” assumes the issuer had a compliance system in place and something still slipped through. An issuer with no filing procedures at all cannot fall back on them.²

What Happens If You Get It Wrong

The consequences of noncompliance extend well past a fine. When an issuer fails to comply with registration requirements under the Securities Act, investors may have a right of rescission, meaning the company has to return the investment plus interest. For a company that has already deployed the capital, unwinding those transactions can be severe.⁷

Beyond rescission, the SEC can bring civil enforcement actions carrying financial penalties and injunctions restricting future offerings. Company leadership can face personal liability, and in severe fraud cases criminal prosecution is possible. Material misstatements or omissions in any offering communication, including a free writing prospectus, expose the issuer to anti-fraud liability under the Securities Act. Reputational damage can outlast the legal exposure; institutional investors routinely demand representations about prior securities law compliance before committing capital, so a single violation can shadow an issuer’s fundraising for years.⁷

1
eCFR. 17 CFR 230.433 – Conditions to Permissible Post-Filing Free Writing Prospectuses
2
eCFR. 17 CFR 230.164 – Post-Filing Free Writing Prospectuses in Connection With Certain Registered Offerings
3
eCFR. 17 CFR 230.405 – Definitions of Terms
4
Securities and Exchange Commission. Statement on Well-Known Seasoned Issuer Waivers
5
U.S. Securities and Exchange Commission. Securities Offering Reform Questions and Answers
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GovInfo. Securities and Exchange Commission 230.433
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U.S. Securities and Exchange Commission. Consequences of Noncompliance