X0306 4 2021-06-30 0001606440 Reliant Bancorp, Inc. RBNC 0001815679 Fitzgerald, II William M. 1736 CAROTHERS PARKWAY SUITE 100 BRENTWOOD TN 37027 true Chief Risk Officer Common Stock 2021-06-30 4 A 0 1027 15.657 A 9027 D These shares were acquired under the Amended and Restated Reliant Bancorp, Inc. 2018 Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c). /s/ David Bartz, Attorney-in-Fact 2021-07-01