Because debt securities are treated differently when it comes to selling restrictions, with less reporting obligations.
The SEC adopted several modifications of the dribble-out limitations specifically for sales of debt securities.
1. No Manner of Sale Requirement:
The manner of sale requirement has been eliminated for sales of debt securities.
2. Revised Volume Limitations:
The SEC has raised the volume limitations for debt securities. Subject to the applicable holding period, affiliates may sell debt securities in amounts that in the aggregate do not exceed 10 percent of a tranche (or class when the securities are non-participatory preferred stock), within a three-month period. Sales by non-affiliates are no longer subject to volume limitations.