4043.62—Change in contributing sponsor or controlled group.
(a) Reportable event and information required.
Advance notice is required for a change in a plan's contributing sponsor or controlled group, as described in § 4043.29(a), and the notice shall include the information described in § 4043.29(b) and, if known, the expected effective date of the reportable event.
(b) Waivers—
(1) Small plan.
Notice is waived with respect to a change of contributing sponsor if the transferred plan has 500 or fewer participants.
(2) De minimis 5-percent segment.
Notice is waived if the person or persons that will cease to be members of the plan's controlled group represent a de minimis 5-percent segment of the plan's old controlled group for the most recent fiscal year(s) ending on or before the effective date of the reportable event.