suspicious transaction report
suspicious-transaction report. A checkbox on IRS Form 4789 formerly (1990–1995) requiring banks and other financial institutions to report transactions that might be relevant to a violation of the Bank Secrecy Act or its regulations or that might suggest money-laundering or tax evasion. • This checkbox, like the criminal-referral form, has since been superseded by the suspicious-activity report. — Abbr. STR. [Cases: Banks and Banking 151. C.J.S. Banks and Banking §§ 266–268, 277–278.]
