Regulation D (FRB)
A Federal Reserve Board regulation that governs the reserve requirements of depository institutions. This limits the number of withdrawals and transfers from an interest bearing deposit account.
Regulation D (SEC)
Under the Securities Act of 1933, any offer to sell securities must either be registered with the Securities and Exchange Commission or meet an exemption.
Regulation D has three rules which provide exemption from the registration requirements, allowing some companies to offer and sell securities without having to register the securities.