An SF-326 form is a Semiannual Report of Payments Accepted from a Non-Federal Sources. In other words, when agency personnel, or their spouses, receive compensation from non-federal sources, it must be reported.
The below are documents obtained via the FOIA, from the Federal Bureau of Investigation (FBI).
SF-326 Forms, Federal Bureau of Investigation (FBI), 2010-2015 [101 Pages, 54MB]
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