At any time after you enter into a covered
transaction, you must give immediate written
notice to the Department of the Treasury office
with which you entered into the transaction if you
learn either that—
(a)
You failed to disclose information earlier,
as required by § 19.335; or
(b)
Due to changed circumstances, you or any of
the principals for the transaction now meet any of
the criteria in § 19.335.