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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(Print or Type Responses)

1. Name and Address of Reporting Person * MOORE H LYNN JR   2. Issuer Name and Ticker or Trading Symbol TYLER TECHNOLOGIES INC [TYL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 5101 TENNYSON PARKWAY 3. Date of Earliest Transaction (Month/Day/Year) 05/09/2018 (Street) PLANO, TX 75024 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 Common Stock 02/26/2019   M   7,200 A (1) 65,147 D   Common Stock 02/26/2019   F   2,834 D $ 205.5 62,313 D

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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

(2)

05/09/2018

A

36,000

(3)

(3)

Common Stock

36,000

$ 0

36,000

D

Restricted Stock Unit

(1)

02/26/2019

M

7,200

(3)

(3)

Common Stock

7,200

$ 0

28,800

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MOORE H LYNN JR 5101 TENNYSON PARKWAY PLANO, TX 75024	X		President and CEO

Signatures

H. Lynn Moore, Sr.		02/28/2019
**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)	Restricted stock units convert into common stock on a one-for-one basis.
(2)	Each performance-based restricted stock unit represents a contingent right to receive one share of Issuer common stock.
(3)	On May 9, 2018, the reporting person was granted 36,000 restricted stock units, which vest in equal installments on the first, second, third, fourth and fifth anniversaries of the vesting commencement date of February 26, 2018, and which will be settled by the Issuer on the respective anniversary dates, subject to the terms and conditions of the Issuer's 2018 Stock Incentive Plan. (The grant was disclosed in the Issuer's Current Report on Form 8-K filed with the Commission on March 9, 2018 and in the Issuer's 2018 Proxy Statement, contingent upon the stockholders' adoption of the 2018 Stock Incentive Plan, which occurred on May 9, 2018.)

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