X0306 4 2023-03-15 0000824410 SANDY SPRING BANCORP INC SASR 0001739531 Slane Kevin SANDY SPRING BANCORP, INC. 17801 GEORGIA AVENUE OLNEY MD 20832 1 EVP, Chief Risk Officer Common Stock 2023-03-15 4 A 0 4049 0 A 4049 D Common Stock 2023-03-15 4 A 0 3447 0 A 3447 D Common Stock 2023-03-15 4 F 0 1149 27.51 D 2298 D Common Stock 10987.9653 D Common Stock 3242.337 D Common Stock 914 D Common Stock 1537 D Common Stock 2132 D Restricted stock units awarded under 2015 Omnibus Incentive Plan will vest ratably on April 1, 2024, April 1, 2025, and April 1 2026. On March 11, 2020, the reporting person was granted restricted stock units that vested based on certain performance criteria for the period from January 1, 2020 through December 31, 2022. Satisfaction of the performance criteria resulted in the reported shares being earned. Restricted stock awarded under 2015 Omnibus Incentive Plan will vest ratably on April 1, 2021, April 1, 2022, and April 1 2023. Restricted stock awarded under 2015 Omnibus Incentive Plan will vest ratably on April 1, 2022, April 1, 2023, and April 1 2024. Restricted stock units awarded under 2015 Omnibus Incentive Plan will vest ratably on April 1, 2023, April 1, 2024, and April 1 2025. /s/ Janet VA Replogle, attorney-in-fact for Mr. Slane 2023-03-16