Welcome to BOL with one of your first posts. Before I answer, first, a little social media fun. The use of the word 'benefactor" as it relates to a CTR is the BOL equivlent of "*you're" that you may see on Twitter.
Benefactor is defined as a "person who gives money to help a cause" In other words a benefactor is someone who gives a donation.
CTRs have "persons who conduct transactions" and "persons on whose behalf transactions are conducted" In your example, since Customer A conducted transactions that exceed $10,000, aggregation rules require that we also include the persons on whose behalf those transactions were conducted.
You mentioned including Customer A as "Conductor on own behalf." Is Customer B a sole-propreitorship, corporation, LLC, partnership?
Is customer A a joint owner on Customer C's account.
The answers to these questions will determine whether Customer A is conducting on own behalf or conducting on behalf of another.
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