Regulation D — Rules Governing the Limited Offer and Sale of Securities Without Registration under the Securities Act of 1933: Rule 501 to Rule 508 (Includes Preliminary Notes to Regulation D) Rule 500 — Use of Regulation D. Rule 501 — Definitions and terms used in Regulation D. Rule 502 — General conditions to be met. Rule 503 — Filing of notice of sales. Rule 504 — Exemption for limited offers and sales of securities not exceeding $1,000,000. Rule 505 — [Reserved] Rule 506 — Exemption for limited offers and sales without regard to dollar amount of offering. Rule 507 — Disqualifying provision relating to exemptions under Rule 504 and Rule 506. Rule 508 — Insignificant deviations from a term, condition or requirement of regulation D.