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Exhibit 21

SIMMONS FIRST NATIONAL CORPORATION
DIRECT AND INDIRECT SUBSIDIARIES
AS OF DECEMBER 31, 2025

Name of Direct or Indirect Subsidiary
State of Incorporation or Organization
Simmons Bank
AR
Simmons First Insurance Services, Inc.
AR
Simmons First Insurance Services of TN, LLC
TN
FS Providence PCC of Grenada, LLC
TN
Providence PCC of Grenada, LLC
MS
Simmons First Auto, Inc.
TN
Simmons First Investments, Inc.
NV
Simmons First REIT of MO, LLC
MO
Simmons First SW REIT, Inc.
DE
Simmons First REIT of TN, Inc.
MD
SB Harob, LLC
TX
Simmons NMTC Holding, LLC
AR
Stillwater NMTC Investment Fund II, LLC
OK
AAC Investment Fund, LLC
AR
Santa Ana Holdings, LLC
MO
Sunridge Meadows, LP
MO
Tax Credit Holdings – Meadowood, LLC
MO
Tax Credit Holdings – Sunridge Meadows, LLC
MO
Beacon Village Tax Credit Fund, L.L.C.
MO
Beacon Village, LP
MO
Capital Partners Series SB II, LLC
MO
Capital Partners Series SB III, LLC
MO
Capital Partners Series SB IV, LLC
MO
Capital Partners Series SB, LLC
MO
Gateway Neighborhood Fund I, LLC
MO
Raintree LMB, LLC
MO
WNC – Institutional Tax Credit NWA, LP
CA
Tax Credit Holdings – Vandeventer, LLC
MO
Vandeventer Place, LP
MO
Tax Credit Holdings Woodbury II, LLC
MO
Woodbury Place II, LP
MO
Tax Credit Holding Jennings II, LLC
MO
The Residences at Jennings Place II, LP
MO
Capital Partners Series SB V, LLC
MO
Capital Partners Series SB VI, LLC
MO
Enhanced Capital Tax Credit Fund 64, LLC
DE
Simmons First Public Finance, Inc.
AR



Name of Direct or Indirect Subsidiary
State of Incorporation or Organization
Tax Credit Holdings – Vandeventer Place II, LLC
MO
Vandeventer Place II, LP
MO
Woodbury Place II, LLC
MO
99 Front HTC, LLC
TN
PR RT, LLC
MO
Meadowood Estates, LP
MO
OTH Impact Fund, L.P.
DE