On January 26, 2009, the staff of the SEC's Division of Corporation Finance issued updated Compliance and Disclosure Interpretations ("C&DIs") relating to a variety of rules under the Securities Act of 1933. The C&DIs include interpretive guidance on Rule 144, as discussed in this memorandum. Among the topics addressed are: aggregation of sales for purposes of the Rule 144(e) volume limitations; circumstances in which tacking is permitted; calculation of holding periods; and the cessation of affiliate status.