BancPlus shareholders approve board declassification, remove supermajority voting; declares $0.53 quarterly dividend

At the 2026 Annual Meeting of Shareholders, held on April 28, 2026, BancPlus Corporation (the “Company”) approved an amendment to its Articles of Incorporation to phase out the classified structure of its Board of Directors (the “Board”) over a three‐year period, beginning with the 2026 Annual Meeting of Shareholders and concluding at the 2028 Annual Meeting of Shareholders, at which time all directors will be elected annually (the “Declassification Amendment”).

At the same meeting, the Company also approved an amendment to its Articles of Incorporation to eliminate the supermajority voting requirement set forth in Article Fourteenth thereof (the “Supermajority Amendment”).

In addition, effective as of April 28, 2026, the Board approved and adopted the Company’s Amended and Restated By‐Laws (the “Amended and Restated By‐Laws”), which implement the following changes: Principal Office • Clarified that the Company’s principal office is located in Ridgeland, Mississippi, and that the Company may establish additional offices or branches as determined by the Board.

Proposal #1: To consider and elect six (6) directors to serve as Class I Directors of the Corporation. For Against Abstain Uncast Eugene F. Webb, Jr. 8,596,900 18,191 5,454 264 Staci H. Tyler 8,595,357 20,830 4,622 — Charles R. White 8,585,746 12,501 22,562 — David Barksdale 8,602,643 11,448 6,454 264 Margaret M. Peaster 8,581,500 34,687 4,622 — Scott M. Polakoff 8,549,907 7,796 63,106 —

Proposal #2: To consider and approve the Declassification Amendment. For Against Abstain Uncast 8,515,922 19,177 85,710 —

Proposal #3: To consider and approve the Supermajority Amendment. For Against Abstain Uncast 8,503,915 34,491 82,403 —