X0306 4 2021-12-15 0001035976 FNCB Bancorp, Inc. FNCB 0001588573 Mahlstedt Brian C. C/O FNCB 102 E. DRINKER ST. DUNMORE PA 18512 1 EVP/CHIEF LENDING OFFICER COMMON STOCK 2021-12-15 4 J 0 270.20190 8.7693 A 49222.6414 D This amount includes 15,217 shares of time-based restricted common stock solely owned by Mr. Mahlstedt; 20,031.0620 shares owned jointly with his spouse which includes 169.8640 shares acquired in December 2021 under the Issuer's Dividend Reinvestment and Stock Purchase Plan ("DRP"); 13,974.5794 shares held solely by Mr. Mahlstedt which includes 100.3379 shares acquired in December 2021 under the DRP. /s/ James M. Bone, Jr. as Attorney in Fact 2021-12-17