Section 11-508 - Effective period of registration statement; withdrawal of registration statement; abandonment of registration statement(a) A registration statement remains effective for 1 year after its effective date unless the Commissioner by rule or order extends the period of effectiveness. A registration statement is not effective while a stop order is in effect under §§ 11-511 through 11-513 of this subtitle.(b) A registration statement may be withdrawn only in the discretion of the Commissioner.(c) A registration statement that has not been made effective within 1 year from the date of initial filing may be deemed abandoned by the Commissioner.