In the US, any public offering of a security requires complete SEC registration — a process taking months, costing millions in legal fees, with ongoing disclosure obligations. For most RWA projects, this cost and timeline are prohibitive, especially in early stages. Reg D and Reg S provide two legitimate paths to 'bypass full registration.' Reg D (Rules 506(b) and 506(c)) allows issuers to raise capital from 'Accredited Investors' without registration. The accredited investor definition: individual annual income over $200K (or joint $300K with expectation of continuation), or net worth over $1M excluding primary residence. This definition excludes most ordinary investors, ensuring purchasers have sufficient financial capacity and risk awareness. Reg S allows securities offerings to non-US investors outside the US regulatory perimeter (since US law's extraterritorial reach primarily targets US persons). Investors in Taiwan, Hong Kong, Singapore purchasing tokenized securities through Reg S-compliant channels are not under direct SEC jurisdiction.
Many RWA projects simultaneously use a 'dual exemption' structure combining Reg D and Reg S — allowing them to accept both US accredited investors and global (including Taiwan) investors. The specific mechanism: when designing the token, issuers separate holders into two whitelist categories: 'Reg D whitelist' (passed US accredited investor verification) and 'Reg S whitelist' (passed non-US investor identity verification). Compliant token standards like ERC-3643 implement this categorization at the contract layer, ensuring tokens only transfer to addresses on the corresponding whitelist. Transfers between the two whitelists are typically restricted, as Reg D holders selling to Reg S holders can raise SEC questions about transfer rules. The dual exemption structure's advantage is broad coverage; its drawback is significant compliance complexity and legal cost.
Reg D and Reg S have important Transfer Restriction provisions that significantly affect tokenized security liquidity. Reg D (Rules 506(b)/(c)): purchasers must hold tokens for at least 12 months before freely transferring on secondary markets. This lockup ensures tokens aren't used to circumvent public market disclosure requirements. Reg S: transfer restrictions are typically shorter but still have a 'restricted period' requirement — generally 6 months during which tokens cannot be sold to US persons. These restrictions explain why many tokenized security secondary markets have far thinner liquidity than expected: even when you technically hold a tradeable token, during the lockup period you can only sell to whitelisted addresses within the same exemption category. Tokenized securities' '24/7 tradeable' claim is legally conditional.
The largest legal risk of Reg D/S exemptions is misclassification: if the SEC later determines that an RWA token is a security but the issuer didn't use appropriate exemptions (or claimed not to be a security but the SEC disagrees), enforcement action follows. The SEC's Howey Test determines whether an asset is a security: if it involves an investment of money, a common enterprise, an expectation of profits, and those profits come primarily from others' efforts — it's a security. Tokenized Treasuries are almost certainly securities (ownership claims on fund shares). Tokenized gold may be a commodity or a security depending on structure. Governance token classification is the most ambiguous. Even issuers using the correct exemptions must regularly reassess their classification — the regulatory environment evolves, and the SEC's enforcement priorities shift.
Ondo Finance's OUSG uses a classic Reg D + Reg S dual exemption structure — one of the best examples for analyzing this legal framework. Ondo's approach: US-based accredited investors (institutions, high-net-worth individuals) purchase OUSG via Reg D (Rule 506(c)), with the issuer obligated to file Form D with the SEC. Non-US investors (Taiwan, Hong Kong, Singapore, etc.) purchase OUSG via Reg S, not under direct US securities law jurisdiction. Both holder categories' tokens are managed under ERC-3643 whitelist mechanisms, ensuring tokens cannot flow to non-whitelisted addresses. This dual exemption structure allows OUSG to legally distribute in multiple global markets, but comes with restrictions: Reg D holders' tokens cannot freely transfer for 12 months, directly affecting OUSG's secondary market liquidity depth — one reason OUSG's secondary market typically doesn't function like a fully liquid market.
Advantages of Reg D/S exemptions: allow RWA issuers to legally offer without full SEC registration, dramatically reducing issuance cost and timeline; allow global investors (non-US) to participate in US-issued tokenized securities via Reg S; provide issuers with a clear compliance framework and legal certainty. Key disadvantages: strictly limit secondary market liquidity (12-month lockup); exclude most ordinary US retail investors (only accredited investors can participate via Reg D); compliance costs remain significant (legal structuring, whitelist maintenance, periodic document updates); SEC enforcement remains an uncertainty, especially where market development outpaces regulatory frameworks. Guidance for Taiwan investors: select RWA projects with explicit Reg S structures and complete compliance documentation, confirm you fall within the Reg S whitelist, and understand how lockup periods affect liquidity.