Simmons First National Corporation Watch

from SC 13G 1 page Exhibit 1 to Form 13g Filed by Northern Trust Corporation Certified Resolution the Undersigned Certifies That the Undersigned Is the Duly Appointed, Qualified and Acting Secretary or Assistant Secretary of Northern Trust Corporation, as Indicated Below, and That the Following Resolution Was Duly Adopted by the Board of Directors of Northern Trust Corporation on April 21, 2020 and Remains in Full Force and Effect: Further Resolved, That Each of the 'Executive Officers' of the Corporation, as That Term Is Defined in Rule 3b-7 Under the Securities Exchange Act of 1934, as Amended (The 'Executive Officers'), and Each of the Following Other Officers of the Corporation or Its Subsidiaries, Is Hereby Authorized to Sign, on Behalf of the Corporation, Any Statements on Schedule 13g or Form 13f, and Any Amendments to Such Statements, Required to Be Filed With the U.S. Securities and Exchange Commission (The 'SEC') by the Corporation With Respect to Any Securities Beneficially Owned by the Corporation, Any of Its Subsidiaries, or Any Other Entity Beneficially Owned or Controlled by the Corporation: Robert P. Browne James D. McDonald Christopher Shipley in Witness Whereof, the Undersigned Has Executed This Certificate on January 19, 2021. Bradley R. Gabriel Assistant Secretary Northern Trust Corporation

from 8-K 27 pages $330,000,000 Simmons First National Corporation 5.00% Fixed-To-Floating Subordinated Notes Due April 1, 2028 Underwriting Agreement

from 8-K 32 pages Agreement and Plan of Merger

from 8-K 37 pages Simmons First National Corporation 2,650,000 Shares 1 Class a Common Stock Underwriting Agreement

from DEF 14A 10 pages Exhibit 1.1 Amended and Restated Simmons First National Corporation Outside Director Stock Incentive Plan - 2006 Amended and Restated Simmons First National Corporation Outside Director Stock Incentive Plan - 2006

from DEF 14A 7 pages Exhibit 1.3 Simmons First National Corporation Outside Director Stock Incentive Plan - 2006 Simmons First National Corporation Outside Director Stock Incentive Plan - 2006

from DEF 14A 14 pages Exhibit 1.2 Simmons First National Corporation Executive Stock Incentive Plan - 2006 Simmons First National Corporation Executive Stock Incentive Plan - 2006

from DEF 14A 6 pages Exhibit 1.1 Simmons First National Corporation 2006 Employee Stock Purchase Plan Simmons First National Corporation 2006 Employee Stock Purchase Plan

from SC 13D ~5 pages Underwriting agreement

from S-3 ~50 pages Form of Underwriting Agreement