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 * HORN CHARLES L   2. Issuer Name and Ticker or Trading Symbol ALLIANCE DATA SYSTEMS CORP [ADS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP & Chief Financial Officer (Last) (First) (Middle) 7500 DALLAS PARKWAY, SUITE 700 3. Date of Earliest Transaction (Month/Day/Year) 02/15/2019 (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 02/15/2019   F(1)   1,085 D $ 171.22 14,999 D   Common Stock 02/19/2019   F(1)   534 D $ 174.28 10,533 (2) (3) (4) 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
HORN CHARLES L 7500 DALLAS PARKWAY, SUITE 700 PLANO, TX 75024			EVP & Chief Financial Officer

Signatures

Cynthia L. Hageman, Attorney in Fact		02/20/2019
**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)	Shares withheld by the Company to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.
(2)	The total number of securities beneficially owned includes: (a) 3,550 unrestricted shares; (b) 542 unvested units from an award of 1,593 time-based restricted stock units granted 2/15/17; (c) 755 unvested units from an award of 2,221 performance-based restricted stock units granted 2/15/17; (d) 1,034 unvested units from an award of 1,542 time-based restricted stock units granted 2/15/18; (e) 1,567 unvested units from an award of 2,339 performance-based restricted stock units granted 2/15/18; and (f) 3,085 unvested performance-based restricted stock units granted 2/15/18.
(3)	Based on the Company's EBT performance in 2018, 75.8% of the original award of 3,085 performance-based restricted stock units granted 2/15/18, or 2,339 units, were earned. The restrictions will lapse with respect to 772 units on 2/18/20 and with respect to 795 units on 2/16/21, subject to continued employment by the Reporting Person on the remaining vesting dates.
(4)	The grant for 3,186 performance-based restricted stock units awarded on 2/15/17 was forfeited due to failure to meet the relative total shareholder return metric for 2017 and 2018.

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