FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Massanelli Stephen C   2. Issuer Name and Ticker or Trading Symbol SIMMONS FIRST NATIONAL CORP [SFNC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP (Last) (First) (Middle) C/O SIMMONS FIRST NATIONAL CORP., 501 MAIN STREET 3. Date of Earliest Transaction (Month/Day/Year) 01/18/2018 (Street) PINE BLUFF, AR 71601 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price SFNC 01/18/2018   M   1,427 A $ 58.25 22,822 D   SFNC 01/18/2018   F   522 D $ 58.25 22,300 D   SFNC               2,350 D   SFNC               1,600 D   SFNC               150 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Unit

(1)

01/18/2018

A

1,387

(2)

(2)

Common

1,387

$ 0

1,387

D

Performance Stock Unit

(3)

01/18/2018

A

2,774

(4)

(4)

Common

2,774

$ 0

2,774

D

Performance Stock Unit

$ 58.25

01/18/2018

M

1,427

(5)

(5)

Common

1,427

$ 58.25

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Massanelli Stephen C C/O SIMMONS FIRST NATIONAL CORP. 501 MAIN STREET PINE BLUFF, AR 71601			EVP

Signatures

/s/ Stephen C. Massanelli by Danielle Hasty		01/22/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Each Restricted Stock Unit represents a contingent right to receive one share of Simmons First National Corporation common stock.
(2)	457 Restricted Stock Units vest on January 18, 2019; 457 Restricted Stock Units vest on January 18, 2020 and 472 Restricted Stock Units vest on January 18, 2021. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting.
(3)	Each Performance Stock Unit represents a contingent right to receive one share of Simmons First National Corporation common stock.
(4)	The shares listed are the maximum number of shares which may vest under this grant. Vesting will occur subsequent to the attainment of performance goals set and verified by the Compensation Committee of the Company's Board of Directors for the performance period ending December 31, 2020, contingent upon the reporting person's continued employment with the registrant.
(5)	The Performance Stock Units vested on January 18, 2018 upon confirmation of the performance criteria set by the Compensation Committee.

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