Regulation D (Reg D) is the U.S. SEC’s principal framework of safe-harbor exemptions from the registration requirements of the Securities Act of 1933 — enabling companies to raise capital from accredited (and limited non-accredited) investors without the cost and disclosure burden of registered public offerings. Reg D is the operational backbone of U.S. private capital markets: nearly all venture-capital financings, private-equity fund subscriptions, hedge-fund offerings, and exempt private placements use Reg D exemptions, collectively raising over $2 trillion annually — substantially more than registered public offerings.
Reg D contains three principal exemptions: (i) Rule 504 — small offerings up to $10M in 12-month period, available to non-reporting issuers, with limited general-solicitation flexibility; (ii) Rule 506(b) — the historical workhorse, no offering-size limit, unlimited accredited investors plus up to 35 non-accredited (with enhanced disclosure for non-accredited), NO general solicitation or advertising permitted; and (iii) Rule 506(c) — JOBS Act creation (2013), no offering-size limit, accredited investors only, general solicitation and advertising PERMITTED, but issuer must take reasonable steps to verify accredited status through documentary evidence.
The 506(b) vs. 506(c) strategic choice is foundational for any U.S. private placement: 506(b) advantages — investor self-certification (lower friction), permits up to 35 non-accredited investors, traditional approach with established legal practice; 506(b) constraints — no public marketing whatsoever (no demo days, no online listings, no press releases mentioning the offering); 506(c) advantages — full public-marketing freedom (online platforms, demo days, conferences, social media); 506(c) constraints — accredited-only, documentary verification required (income statements, bank statements, broker letters, or third-party verification services). Most early-stage VC rounds use 506(b); platforms like AngelList, SeedInvest, and Republic operate under 506(c).
Reg D filing requirements include: Form D — short-form notice filing with SEC within 15 days of first sale (information about issuer, offering type, amount raised, investor counts); state-level filings — most states require parallel Form D filings (blue sky compliance, $100–500 filing fees per state, typically the issuer’s home state plus states where investors reside); bad-actor disqualification — issuer and covered persons (directors, officers, 20%+ shareholders, promoters) must not have specified disqualifying events (SEC sanctions, criminal convictions, certain regulatory actions) within defined lookback periods.
For Turkish founders raising from U.S.-based investors through Delaware top-co or other U.S.-incorporated entities, Reg D is the standard exemption: 506(b) for traditional VC rounds with accredited investors found through relationships and warm introductions; 506(c) for crowdfunding-platform deals requiring public marketing; Form D filing discipline within 15-day window; blue sky coordination across investor jurisdictions; bad-actor verification before each filing; and integration with parallel Reg S for non-U.S. investors in the same financing. Vircon Legal advises Turkish founders on Reg D strategy — 506(b)/506(c) selection, Form D filing, bad-actor verification, multi-state blue sky coordination, accredited-investor verification, and the integration of Reg D with parallel international offering exemptions.