Regulation D Rule 506(b) vs 506(c): Choosing the Right Exemption

Regulation D under the Securities Act of 1933 provides the primary federal framework for exempt private securities offerings. Within Regulation D, Rule 506 is the most significant exemption because it permits issuers to raise an unlimited amount of capital from qualifying investors without registering the securities with the SEC. Rule 506 contains two separate sub-exemptions, Rule 506(b) and Rule 506(c), that reflect fundamentally different approaches to investor solicitation, investor eligibility, and issuer verification obligations. Understanding the operational distinctions between these two exemptions is essential for any issuer planning a private securities offering.

This sub-article is part of the Private Placements Reg D Legal Guide. It addresses the structural characteristics of each exemption, the JOBS Act history that created 506(c), disclosure requirements when non-accredited investors are included under 506(b), the pre-existing substantive relationship standard, integration concerns when issuers run concurrent or sequential offerings, the demo day exception under current SEC guidance, the framework for toggling or switching between exemptions, SEC proposed enhancements under Rule 256, restrictions applicable to blank check companies and SPACs, mandatory Exchange Act reporting obligations under Section 15(d) that may arise after a large Regulation D offering, state preemption under the National Securities Markets Improvement Act, and investor suitability representation practices. The companion article on accredited investor verification under Rule 506(c) addresses the specific verification methods and standards in detail.

Acquisition Stars advises issuers, placement agents, and investors on Regulation D compliance in connection with private capital raises and M&A-adjacent transactions. Nothing in this article constitutes legal advice for any specific transaction.

Rule 506(b): General Characteristics and the No-General-Solicitation Requirement

Rule 506(b) is the direct descendant of the original Rule 506 that existed before the JOBS Act. It preserves the traditional private placement model in which securities are offered only to investors with whom the issuer, or a financial intermediary acting on the issuer's behalf, has a pre-existing substantive relationship. The foundational prohibition is on general solicitation and general advertising: an issuer relying on 506(b) may not use any form of advertisement, article, notice, or other communication published in any newspaper, magazine, or similar media; broadcast over television or radio; or otherwise communicated to the general public through any means, including the internet, in connection with the offering. This prohibition is categorical. A single public social media post describing the offering, even if made inadvertently by a founder or a member of the offering team, will contaminate the offering and permanently disqualify it from 506(b) exemption.

The no-general-solicitation standard is applied based on the totality of the issuer's conduct. The SEC and the courts look at all communications made in connection with the offering, including communications by the issuer, its officers, directors, and employees, and by any placement agents or finders acting on its behalf. A placement agent's mass email campaign directed at investors the agent has not previously vetted constitutes general solicitation attributable to the issuer. An issuer who posts on a public forum that it is raising capital, even without specific offering terms, risks triggering the general solicitation prohibition. Internal communications within the issuer's organization are not general solicitation, but any outbound communication directed at people who are not members of the existing investor or employee community must be analyzed carefully.

The 506(b) framework imposes no cap on the total dollar amount that can be raised. There is also no mandatory waiting period or filing required before offers can be made. The issuer must file a Form D with the SEC within 15 calendar days after the first sale of securities in the offering. Form D is a notice filing, not a registration, and its submission does not constitute SEC review or approval of the offering. Several states also require advance notice filings before sales commence, and issuers must review state-specific requirements in each state where offers or sales will be made.

Rule 506(c): The JOBS Act Framework and General Solicitation Permission

Rule 506(c) was adopted by the SEC in July 2013 pursuant to Section 201(a) of the Jumpstart Our Business Startups Act, which Congress enacted in April 2012. The JOBS Act directed the SEC to amend Regulation D to remove the prohibition on general solicitation and general advertising for offerings under Rule 506, subject to conditions specified by the SEC. The SEC's implementing rule took effect on September 23, 2013. The JOBS Act reflected a congressional judgment that the general solicitation prohibition, which had been in place since 1933, was an unnecessary barrier to capital formation for small and growing companies, and that permitting public advertising of private offerings to accredited investors would increase capital access without meaningfully increasing investor risk, given the income and wealth thresholds that define accredited investor status.

Rule 506(c) permits an issuer to use any form of general solicitation or general advertising, including public websites, social media platforms, mass email campaigns, broadcast media, newspaper advertisements, and presentations at public investor conferences. The permission is unconditional on the type of communication. An issuer can post offering terms on a publicly accessible website, advertise in national financial publications, or conduct a social media campaign describing the investment opportunity. The condition attached to this permission is strict: all purchasers in the offering must be accredited investors, and the issuer must take reasonable steps to verify that each purchaser is an accredited investor. Self-certification by the investor, without further verification, does not satisfy the reasonable steps standard under Rule 506(c). The verification requirement is the defining burden of the 506(c) framework and is addressed in detail in the companion article on accredited investor verification.

The 506(c) framework does not permit participation by non-accredited investors under any circumstances. Unlike 506(b), which permits up to 35 non-accredited sophisticated investors, 506(c) is accredited-investor-only. An issuer who permits a single non-accredited investor to purchase securities in a 506(c) offering has violated the terms of the exemption. Because verification must precede or accompany investment, the issuer cannot rely on an investor's representation at closing that they are accredited; the issuer must have completed reasonable steps verification before accepting the investment. This structural requirement means issuers must build verification into their investor onboarding process, not treat it as an afterthought.

Non-Accredited Investor Participation Under 506(b): Sophistication and Disclosure

Rule 506(b) allows issuers to sell to up to 35 non-accredited investors in any 12-month offering period, provided each non-accredited investor is sophisticated. The sophistication standard is defined in Rule 506(b)(2)(ii) as the investor having, either alone or with a purchaser representative, such knowledge and experience in financial and business matters that they are capable of evaluating the merits and risks of the prospective investment. This is a qualitative assessment, not a financial threshold. A non-accredited investor with a business school degree, relevant investment experience, or professional background in the relevant industry may qualify as sophisticated even if their income or net worth does not meet the accredited investor thresholds. The issuer bears the burden of making a reasonable determination that each non-accredited investor is sophisticated before accepting their investment.

The inclusion of even one non-accredited investor in a 506(b) offering triggers the full disclosure requirements of Rule 502(b). These requirements mandate that the issuer provide non-accredited investors with specific written information about the offering before closing. For non-reporting issuers, the required information includes: a description of the business and its recent history, the terms of the securities being offered, the use of proceeds from the offering, a description of the risk factors associated with the investment, biographical information about key management personnel, any material transactions between the issuer and its affiliates, the capitalization of the issuer, and financial statements. The financial statement requirement escalates based on offering size: for offerings up to $20 million in a 12-month period, the issuer's financial statements must be dated within 120 days of the offering and may be unaudited if auditing is impractical, though audited statements are required if available. For offerings above $20 million, audited financial statements are required.

Practically speaking, the disclosure burden makes non-accredited investor participation in 506(b) offerings expensive and legally complex. Issuers who wish to include non-accredited investors frequently find that the cost of preparing compliant disclosure documents, the risk of additional securities law liability if the disclosure is later found to be inadequate, and the ongoing management of a mixed accredited and non-accredited investor base outweigh the benefits of accessing those investors' capital. Most issuers either confine their 506(b) offerings to accredited investors only, or structure their deals to use other exemptions when non-accredited participation is a priority.

Pre-Existing Substantive Relationship: How to Establish and Document It

The pre-existing substantive relationship standard is the operational gateway to the 506(b) exemption. Because general solicitation is prohibited, an issuer can only approach investors with whom it, or a financial intermediary acting on its behalf, has a relationship that predates the offering and that is substantive in nature. The SEC has not adopted a precise regulatory definition of pre-existing substantive relationship, leaving it to issuers to analyze each investor contact against the guidance available in no-action letters, enforcement actions, and general SEC interpretive releases.

A relationship is pre-existing if it was established before the issuer commenced the offering or before any specific discussions of a potential investment were raised. The offering commencement date is typically the date on which the issuer first communicated offering terms to any prospective investor, though some practitioners measure it from the date on which the issuer's board or management formally resolved to commence an offering. Relationships formed after that date, or formed specifically in anticipation of the offering, do not satisfy the standard. This means issuers who wish to conduct 506(b) offerings must cultivate investor relationships continuously as part of their normal business operations, not scramble to establish relationships immediately before opening the offering.

A relationship is substantive if it involved actual interaction sufficient for the issuer to evaluate the investor's financial sophistication and ability to evaluate the investment. A list of email addresses purchased from a data vendor, with no prior contact, is not a substantive relationship. A relationship with an investor whom the issuer met at a conference, exchanged multiple communications with, and whose professional background and financial circumstances the issuer has some knowledge of, is more likely to qualify. Broker-dealers and registered investment advisers who participate as placement agents bring their existing client relationships into the offering: because the intermediary has a pre-existing relationship with the investor and has conducted some form of suitability evaluation, the issuer can rely on the intermediary's relationship to satisfy the pre-existing relationship standard. Issuers must document the nature and origin of each investor relationship as part of the offering record, in case they later need to demonstrate the legitimacy of the 506(b) exemption.

The Demo Day Exception and Screened Investor Events Under 506(b)

One of the practical challenges of conducting a 506(b) offering is that founders, entrepreneurs, and early-stage companies frequently present at accelerator demo days, angel investor conferences, and similar events as part of their normal business development activities. The question of whether these presentations constitute general solicitation that would compromise a concurrent or subsequent 506(b) offering has been addressed by the SEC through no-action letters and interpretive guidance over the past decade.

The SEC's position, as articulated in no-action letters issued to organizations including the Angel Capital Education Foundation, is that presentations at events organized by angel groups, accelerators, and similar organizations do not constitute general solicitation under certain conditions. Those conditions include: the event organizer must have pre-screened attendees to confirm investor status or sophistication; the event must not be open to the general public in the sense that anyone can attend without prior vetting; the organizer must have an established relationship with its membership; and the issuer must not distribute offering materials to the general public in connection with the event. If these conditions are met, the presentation at the event is directed at a defined, pre-screened audience rather than the general public, and the communication is therefore not general solicitation.

Issuers must be careful not to overread the demo day exception. A presentation at a publicly accessible startup competition where anyone can register and attend, with no pre-screening of attendees, does not qualify. A pitch session at a conference that is marketed broadly to the general business community is also likely to constitute general solicitation. The exception is narrow and applies specifically to events organized by investor networks with established, pre-screened membership. Issuers who are uncertain whether a planned presentation qualifies for the exception should obtain counsel's review before presenting, because any general solicitation is permanent and cannot be walked back. Even if the presentation itself does not constitute general solicitation, any collateral materials distributed at the event or published in connection with it that describe the offering in detail may independently constitute general solicitation.

Integration Doctrine: Managing Concurrent and Sequential Offerings

The integration doctrine addresses the question of when two or more separate securities transactions should be treated as a single integrated offering for purposes of determining whether an exemption applies. Integration analysis is particularly important for issuers who conduct multiple offerings in different tranches, who use different exemptions for different investor categories, or who conduct sequential offerings over time.

The SEC substantially updated its integration doctrine guidance through rules and releases in 2020 and subsequent years. Under current guidance, the primary analytical question is whether the two offerings are part of the same plan of financing. Relevant factors include whether the offerings involve the same class of securities, whether the offerings are made at approximately the same time, whether the same type of consideration is received, whether the offerings are made for the same general purpose, and whether the offerings are made to the same class of investors. The historical five-factor test has been supplemented by safe harbor rules that provide clearer guidance for specific scenarios.

The 30-day safe harbor provides that offerings made more than 30 days apart are not integrated if no general solicitation is used in either offering. For Rule 506 offerings specifically, the SEC's guidance provides that a Rule 506(c) offering that uses general solicitation does not integrate with a concurrent Rule 506(b) offering as long as: the issuer uses separate offering materials for each offering; the 506(b) offering is not marketed using general solicitation; and investors in the 506(b) offering were solicited only through pre-existing substantive relationships. This guidance allows a sophisticated issuer to run both a 506(b) tranche for existing investor relationships and a simultaneous 506(c) tranche marketed publicly, provided the operational separation is maintained. Any bleed between the two tranches, such as directing general solicitation materials at investors being approached under 506(b), collapses the separation and potentially compromises the 506(b) exemption.

Toggling Between 506(b) and 506(c): Rules and Practical Limits

Toggling refers to the practice of converting an ongoing offering from one Rule 506 sub-exemption to the other. The most common toggle scenario is an issuer who begins a 506(b) offering and then decides to begin general solicitation, effectively attempting to convert the offering to 506(c). The less common scenario is an issuer who began with 506(c) and wishes to return to 506(b), perhaps because verification costs have proved prohibitive or because the issuer wishes to include a non-accredited investor.

Toggling from 506(b) to 506(c) is theoretically possible for a single continuous offering but raises several significant problems. First, the issuer must ensure that all prior investors in the offering are accredited investors, because 506(c) is accredited-only and all purchasers in the offering, including those who invested before the toggle, must meet the accredited standard. If the issuer accepted even one non-accredited investor under the 506(b) framework, the toggle to 506(c) cannot fully sanitize the offering because that prior sale was properly made under 506(b) and is inconsistent with the all-accredited requirement of 506(c). Second, the issuer must begin verifying accredited status under the 506(c) reasonable steps standard for all investors going forward from the date of the toggle. Third, if the toggle is treated as creating a new offering for integration purposes, the prior 506(b) sales and the new 506(c) offering may be integrated, potentially disrupting both exemptions. The safest practice for an issuer who wishes to move from 506(b) to 506(c) is to close the 506(b) offering completely, wait for the 30-day safe harbor period to elapse, and then commence a new standalone 506(c) offering.

Toggling from 506(c) to 506(b) is generally not possible, because any general solicitation made in connection with an offering permanently disqualifies that offering from 506(b) exemption. The contamination from general solicitation is irreversible for the offering in which it occurred. An issuer who has used general solicitation to market a 506(c) offering cannot simply stop the general solicitation and declare the offering to be a 506(b) offering; the prior general solicitation remains part of the offering record and remains disqualifying under 506(b). See the companion Reg D legal guide for additional discussion of strategic offering structure considerations.

SEC Proposed Enhancements Under Rule 256 and Broader Regulation D Reform

The SEC has periodically considered amendments to Regulation D that would expand or modify the framework for exempt private offerings. Proposed Rule 256, as part of broader reform proposals, would require issuers to file Form D before commencing an offering rather than within 15 days after the first sale. This proposal, if adopted, would give the SEC and state regulators advance notice of offerings before investors are approached, enabling earlier regulatory attention to potentially problematic offerings.

Other proposed amendments that have been discussed in various SEC rulemaking contexts include enhanced disclosure requirements for 506(c) offerings, additional bad actor disqualification provisions, expanded Form D information requirements, and potential limits on the duration of Rule 506 offerings without periodic amendment filings. The SEC has also considered whether the accredited investor definition needs revision to better account for financial sophistication beyond wealth-based thresholds, a discussion that overlaps with the 2020 amendments that added new categories of accredited investors including holders of securities licenses and knowledgeable family office employees.

Issuers conducting ongoing Regulation D programs should monitor SEC rulemaking activity, because changes to the framework could affect the structure and compliance requirements for future offerings. Proposed rules that impose advance filing requirements before offering commencement would require issuers to build regulatory lead time into their capital raise timelines. Acquisition Stars monitors regulatory developments in the private offering space and advises clients on how structural changes in the regulatory framework affect their capital strategies.

Blank Check Companies, SPACs, and Rule 506 Restrictions

Blank check companies and special purpose acquisition companies face specific restrictions under Regulation D that reflect Congress's historical concern about the use of blank check offerings to facilitate securities fraud and investor harm. Rule 419 under the Securities Act imposes requirements on blank check company offerings, including mandatory escrow arrangements and investor rescission rights, designed to protect investors from promoters who raise capital without a defined acquisition target.

Rule 419 applies to blank check company offerings that involve penny stocks as defined under Exchange Act Rule 3a51-1. A blank check company offering that is conducted at a price per share above the penny stock threshold and that is structured to comply with Rule 506 may be exempt from Rule 419's most burdensome requirements. However, the interaction between the blank check restrictions, Rule 419, and the Rule 506 exemption requires careful analysis because the exemptions from Rule 419 are narrow and the definition of blank check company is broad enough to capture many development-stage entities that have not yet identified their acquisition targets.

SPAC transactions present a layered regulatory picture. The SPAC's IPO is typically a registered offering, not a Regulation D exempt offering. The PIPE transaction that accompanies or follows a SPAC de-SPAC merger, however, is frequently structured as a Regulation D offering, often under Rule 506(b) or 506(c) depending on the issuer's solicitation approach and the investor base being targeted. PIPE transactions in the SPAC context must be structured so that they do not integrate with the registered IPO offering and so that the PIPE securities are appropriately restricted from transfer until registered or exempt from registration under the Securities Act. The parent Reg D guide addresses PIPE mechanics in greater detail.

Section 15(d) Reporting Obligations After Large Regulation D Offerings

Issuers who conduct large Regulation D offerings may trigger ongoing Exchange Act reporting obligations under Section 15(d) even though the offering itself was exempt from Securities Act registration. Section 15(d) of the Exchange Act requires any issuer that has filed a registration statement that has become effective under the Securities Act to file annual and other periodic reports with the SEC. For registered offerings, Section 15(d) reporting begins in the year after the fiscal year in which the effective registration statement was filed.

Section 15(d) does not directly apply to Regulation D exempt offerings because no registration statement is filed. However, Section 12(g) of the Exchange Act requires an issuer to register a class of securities under the Exchange Act when the issuer has total assets exceeding $10 million and a class of equity securities held of record by 2,000 or more persons, or 500 or more non-accredited investors. An issuer that crosses either threshold must register under Section 12(g) and, upon registration, becomes subject to the full Exchange Act reporting regime including the annual report on Form 10-K, quarterly reports on Form 10-Q, and current reports on Form 8-K.

The Section 12(g) threshold is particularly relevant for issuers conducting multiple rounds of Regulation D financing, crowdfunding offerings under Regulation CF, or employee stock option programs. The accredited investor carveout in Section 12(g) means that investors who qualified as accredited investors are not counted toward the 500-non-accredited threshold, but they are counted toward the 2,000-person-total threshold. Issuers with growing investor bases should monitor their record holder count continuously and consult counsel if the Section 12(g) thresholds are approaching, because inadvertent crossing of the threshold triggers registration obligations that are costly and difficult to reverse.

State Preemption Under NSMIA and State Notice Filing Requirements

The National Securities Markets Improvement Act of 1996 fundamentally reshaped the relationship between federal and state securities regulation by designating certain securities as covered securities exempt from state registration. Securities sold in Rule 506 offerings, whether under Rule 506(b) or Rule 506(c), are covered securities under Section 18(b)(4)(D) of the Securities Act. NSMIA prohibits states from requiring registration or qualification of covered securities and from imposing conditions on their offer or sale that are inconsistent with the federal framework.

NSMIA does not eliminate all state authority over Rule 506 offerings. States retain the right to require notice filings and to charge filing fees. Most states require issuers to file a copy of the Form D filed with the SEC, along with a state-specific cover form and a filing fee, within a specified period after the first sale of securities to an investor in that state. The filing deadline varies by state, ranging from 15 days to as long as 30 days after the first in-state sale. A handful of states require advance notice filings or have specific requirements for Rule 506(c) offerings that involve general solicitation. Issuers must track the states in which investors are located and comply with state-specific notice requirements in each such state.

States also retain enforcement authority over fraud in connection with the offer or sale of covered securities. This means the antifraud provisions of each state's blue sky law continue to apply to Rule 506 offerings made within that state. State securities administrators can investigate and prosecute fraudulent conduct, misrepresentations, and material omissions in private placements even if those placements were properly structured under federal law. Some states have also adopted their own bad actor disqualification provisions that apply to intrastate offerings, which may be broader than the federal bad actor rules of Rule 506(d). Issuers must analyze state-specific bad actor provisions in addition to federal requirements when evaluating officer and director eligibility.

Investor Suitability Representations and Subscription Agreement Practices

Regardless of whether an issuer uses Rule 506(b) or Rule 506(c), the issuer's subscription documents should include investor representations that serve multiple legal and practical purposes. Under Rule 506(b), where self-certification of accredited status is sufficient to establish the investor's eligibility, a carefully drafted subscription questionnaire and subscription agreement that obtains the investor's representation of accredited investor status, their sophistication, their investment experience, their financial condition, and their understanding of the illiquid and speculative nature of the investment, serves as the primary evidence that the issuer took reasonable steps to ensure that the offering was properly limited to eligible investors.

The subscription agreement should include representations by the investor that: they are an accredited investor as defined in Rule 501(a); they have the financial ability to bear the economic risk of the investment, including complete loss of the investment; they have no need for liquidity with respect to the amount invested; they have had the opportunity to review the offering documents and to ask questions of and receive answers from management; and they have not been offered or sold the securities as a result of any general solicitation. The no-general-solicitation representation is particularly important for 506(b) offerings because it helps document that the specific investor was approached through an appropriate channel and not as a result of impermissible general solicitation.

For 506(c) offerings, the subscription agreement should acknowledge that the issuer has obtained or will obtain verification of the investor's accredited status through one of the reasonable steps verification methods, and should include the investor's authorization for the verification process and their representation that the information provided for verification purposes is accurate. The subscription documentation should be integrated with the verification workflow so that the verification is completed before or simultaneously with the investor's execution of the subscription agreement. Issuers who complete subscription agreements and then attempt to verify accredited status after receiving funds face additional risk because the investment was accepted before verification was complete. Acquisition Stars structures subscription documentation and investor onboarding workflows for Regulation D offerings to ensure that compliance steps are embedded in the investment process rather than treated as post-closing formalities. Contact us to assess the offering structure for your transaction.

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