Regulation D is the workhorse exemption for security token offerings. More tokenized securities have been issued under Reg D than any other exemption pathway, and for good reason: it allows unlimited capital raising from accredited investors, requires no SEC review or qualification, and under Rule 506(c), permits the general solicitation that is practically necessary for marketing token offerings online. Understanding the specific compliance requirements of Rules 506(b) and 506(c) – and the critical differences between them – is essential for any issuer contemplating a tokenized securities offering.
Choosing Between 506(b) and 506(c)
The decision between Rule 506(b) and Rule 506(c) is the first and most consequential compliance choice in a Reg D token offering.
Rule 506(b): No General Solicitation
Key Features:
- No limit on the amount raised
- Unlimited accredited investors
- Up to 35 non-accredited but sophisticated investors
- No general solicitation or general advertising permitted
- Self-certification of accredited investor status (questionnaire-based)
- No specific verification requirement beyond reasonable belief
Compliance Implications for Token Offerings:
The prohibition on general solicitation creates significant practical challenges for token offerings. Under Rule 502(c), the issuer cannot offer securities through “any form of general solicitation or general advertising,” including:
- Any advertisement, article, notice, or other communication published in any newspaper, magazine, or social media platform
- Any broadcast or telecast
- Any seminar or meeting whose attendees have been invited by general solicitation
For token offerings, this means:
- No public marketing of the token sale on social media, websites, or forums
- No public announcements about the offering terms or opportunity to invest
- The token offering page cannot be publicly accessible – it must be behind a login that verifies pre-existing relationship or accredited investor status
- All communications about the offering must be directed to persons with whom the issuer (or its placement agent) has a pre-existing, substantive relationship
When 506(b) Makes Sense:
- The issuer has an established investor network from prior offerings
- A registered broker-dealer is engaged as placement agent with an existing investor book
- The issuer prefers to include a limited number of sophisticated non-accredited investors
- The issuer wants to avoid the cost and complexity of accredited investor verification
Rule 506(c): General Solicitation Permitted
Key Features:
- No limit on the amount raised
- Accredited investors only (no non-accredited investors)
- General solicitation and general advertising permitted
- Issuer must take “reasonable steps” to verify accredited investor status
- Verification must go beyond self-certification
Compliance Implications for Token Offerings:
Rule 506(c) is the natural fit for most token offerings because:
- Token offerings are inherently public – blockchain transactions are visible, and marketing typically occurs online
- General solicitation permits the issuer to market the offering through websites, social media, conferences, and other public channels
- The token offering page can be publicly accessible
- Marketing materials can describe the investment opportunity, token economics, and offering terms
The trade-off is the accredited investor verification requirement, which is more rigorous than 506(b)’s self-certification approach.
Accredited Investor Verification Under 506(c)
Verification Methods
The SEC has provided non-exclusive safe harbors for verifying accredited investor status:
Income Verification:
- Review IRS forms (W-2, K-1, 1040) for the two most recent years demonstrating income exceeding $200,000 (individual) or $300,000 (with spouse) in each year
- Obtain a written representation that the investor reasonably expects income exceeding the threshold in the current year
Net Worth Verification:
- Review bank statements, brokerage statements, and other financial documentation demonstrating assets
- Obtain consumer report from a credit reporting agency showing liabilities
- Calculate net worth (assets minus liabilities, excluding primary residence)
- Net worth must exceed $1 million
Third-Party Verification:
- Obtain written confirmation from a registered broker-dealer, SEC-registered investment adviser, licensed CPA, or licensed attorney that they have verified the investor’s accredited status within the prior three months
Certifications for Knowledgeable Employees:
- Holders of Series 7, Series 65, or Series 82 licenses are accredited investors and can provide their license documentation
Professional Certifications:
- Holders of CFA, CFP, or other designations recognized by the SEC may qualify as accredited investors
Verification Service Providers
Several specialized services provide accredited investor verification for token offerings:
Verify Investor: Purpose-built accredited investor verification platform. Investors upload documentation, and Verify Investor issues a verification letter. Cost: $50-$100 per verification. Processing time: 24-48 hours. Widely used in the STO industry.
Accreditation.io: Automated accredited investor verification with document review and CPA-verified letters. Cost: $50-$75 per verification. Processing time: same day for most verifications.
Parallel Markets: Investor onboarding platform that combines KYC, AML screening, and accredited investor verification in a single workflow. Used by several security token platforms.
Securities Attorney Verification: Investors can provide verification letters from their own securities attorneys or CPAs. The issuer should confirm the professional’s credentials and the recency of the verification (within 90 days).
Common Verification Pitfalls
- Stale verifications: Accredited investor verification should be current – within 90 days of the investment for third-party certifications, and based on the two most recent tax years for income verification
- Self-certification alone: Under 506(c), a simple checkbox or questionnaire is NOT sufficient. The issuer must take “reasonable steps” beyond self-certification
- Insufficient documentation review: Merely collecting documents without reviewing them does not satisfy the verification requirement
- Joint accounts: For married couples claiming the $300,000 income threshold, both spouses’ income must be verified
- Entity investors: Verify accredited investor status at the entity level (e.g., $5 million in assets for most entities) or verify that all equity owners are individually accredited
Transfer Restrictions and Smart Contract Implementation
Rule 144 Holding Period
Securities issued under Regulation D are “restricted securities” subject to Rule 144 resale restrictions:
- Non-reporting issuers: One-year holding period from the date of acquisition before resale under Rule 144
- Reporting issuers (SEC-reporting companies): Six-month holding period
- After the holding period: Resale permitted if adequate current public information exists, volume limitations apply (for affiliates), and the sale is through a broker
Smart Contract Enforcement
The security token smart contract must enforce transfer restrictions programmatically:
Whitelist-Based Transfer Restrictions: The smart contract maintains a whitelist of addresses authorized to receive tokens. A transfer is executed only if:
- The sender’s address is on the whitelist
- The recipient’s address is on the whitelist
- The holding period has elapsed for the specific tokens being transferred
- The transfer does not violate maximum holder limits or jurisdictional restrictions
Implementation Standards:
- ERC-1400: The primary security token standard on Ethereum, providing partition-based transfer restrictions, document management, and controller operations
- ERC-3643 (T-REX): An open-source standard developed by Tokeny that implements identity-based transfer restrictions using on-chain identity registries
- DS Protocol (Securitize): Proprietary standard used by Securitize’s transfer agent system
Transfer Agent Role: The transfer agent is the authoritative record-keeper and controls the whitelist. When a secondary transfer is requested:
- The buyer completes KYC and accredited investor verification with the transfer agent
- The transfer agent verifies that the transfer complies with all applicable restrictions (holding period, jurisdiction, investor qualification)
- The transfer agent adds the buyer’s address to the whitelist
- The smart contract permits the transfer
State Blue Sky Compliance
While Rule 506 offerings benefit from federal preemption of state registration requirements, issuers must still:
- File Form D notice filings in each state where securities are sold
- Pay state notice filing fees (ranging from $100 to $750 per state)
- Comply with state-specific requirements (some states require additional disclosures or filing of the PPM)
- Be aware that some states impose additional requirements on issuers, such as filing the offering documents
Most states accept electronic filing through the NASAA Electronic Filing Depository (EFD) system. Total state filing costs for a 50-state offering typically range from $5,000 to $25,000.
Offering Document Requirements
Private Placement Memorandum
While not technically required for Regulation D offerings to accredited investors, a PPM is strongly recommended as it:
- Provides the disclosures necessary to satisfy anti-fraud requirements under Section 10(b) and Rule 10b-5
- Documents the risk factors investors should consider
- Creates a record of what was disclosed to investors (useful in defending against future claims)
- Is required if any non-accredited investors participate under 506(b)
PPM Content for Token Offerings:
- Description of the issuer and its business
- Description of the token, including the rights and obligations it represents
- Smart contract specifications and audit results
- Token economics (supply, distribution, vesting)
- Description of the underlying asset or project
- Use of proceeds
- Risk factors (regulatory risk, technology risk, market risk, liquidity risk)
- Management team backgrounds and qualifications
- Financial statements (audited if available)
- Subscription procedures
- Transfer restrictions and secondary market limitations
- Tax considerations
- Legal opinion on security classification
Subscription Agreement
The subscription agreement is the contract between the issuer and the investor. It must include:
- Investor representations and warranties (accredited investor status, investment intent, understanding of risks)
- Issuer representations
- Investment amount and token quantity
- Closing conditions
- Governing law and dispute resolution
- Token delivery procedures (wallet address designation)
Form D Filing Requirements
Filing Timeline and Content
Form D must be filed electronically via the SEC’s EDGAR system within 15 days of the first sale of securities. The filing includes:
- Issuer identification (name, jurisdiction, type of entity)
- Related persons (directors, officers, promoters)
- Industry group classification
- Federal exemption claimed (Rule 506(b) or 506(c))
- Type of securities offered
- Minimum investment amount
- Sales compensation (broker-dealer fees)
- Offering and sales amounts
- Number of investors
- Use of proceeds
Amendment Requirements
Amendments to Form D are required for material changes and annually. Most issuers file an amendment at the closing of the offering to report the final offering amount and number of investors.
Common Form D Errors
- Filing after the 15-day deadline (some states may restrict future offerings for late filings)
- Incorrect exemption claimed (filing 506(b) when general solicitation was used, requiring 506(c))
- Failing to include all related persons
- Not filing state notice filings in all required states
- Failing to file amendments for material changes
Compliance Checklist
Pre-Offering:
- Securities counsel engaged and offering structured
- Howey test analysis documented
- Exemption pathway selected (506(b) or 506(c))
- PPM drafted and reviewed
- Subscription agreement prepared
- Smart contract developed and audited
- Transfer restrictions programmed
- Issuance platform selected and configured
- KYC/AML verification provider integrated
- Accredited investor verification process established (506(c))
- Transfer agent engaged or registered
- Escrow agent engaged
During Offering:
- Form D filed within 15 days of first sale
- State notice filings completed
- Investor KYC and accreditation verified before subscription acceptance
- Subscription agreements executed
- Investor funds held in escrow until closing
- Anti-fraud compliance maintained in all marketing materials
- No general solicitation (506(b)) or proper verification (506(c))
Post-Offering:
- Tokens distributed to whitelisted addresses
- Transfer agent records updated
- Form D amendment filed with final offering data
- Ongoing transfer restriction enforcement
- Tax documentation prepared and distributed
- Compliance monitoring for Exchange Act registration triggers