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 * Santillan Laura   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) SVP, Chief Acctg. 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   A(1)   762 A (1) 22,945 D   Common Stock 02/15/2019   A(2)   3,048 A (2) 25,993 D   Common Stock 02/15/2019   F(3)   318 D $ 171.22 25,675 D   Common Stock 02/19/2019   F(3)   156 D $ 174.28 24,980 (4) (5) 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Santillan Laura 7500 DALLAS PARKWAY, SUITE 700 PLANO, TX 75024			SVP, Chief Acctg. 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)	The new grant is for 762 shares of common stock represented by time-based restricted stock units. The restrictions will lapse on 251 units on each of 2/18/20 and 2/16/21 and on 260 units on 2/15/22, subject to continued employment by the Reporting Person on the vesting dates.
(2)	The new grant is for 3,048 shares of common stock represented by performance-based restricted stock units, which may be adjusted up or down at the time the performance restriction lapses. The restriction may lapse with respect to 33% of such shares on each of 2/18/20 and 2/16/21 and with respect to 34% of such shares on 2/15/22 contingent on meeting an EBT metric for 2019 and subject to continued employment by the Reporting Person on the vesting dates.
(3)	Shares withheld by the Company to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units.
(4)	The total number of securities beneficially owned includes: (a) 18,674 unrestricted shares; (b) 400 shares held in an IRA account; (c) 155 unvested units from an award of 455 time-based restricted stock units granted 2/15/17; (d) 433 unvested units from an award of 1,272 performance-based restricted stock units granted 2/15/17; (e) 374 unvested units from an award of 557 time-based restricted stock units granted 2/15/18; (f) 1,134 unvested units from an award of 1,692 performance-based restricted stock units granted 2/15/18; (g) the new grant for 762 time-based restricted stock units; and (h) the new grant for 3,048 performance-based restricted stock units.
(5)	Based on the Company's EBT performance in 2018, 75.8% of the original award of 2,231 performance-based restricted stock units granted 2/15/18, or 1,692 units, were earned. The restrictions will lapse with respect to 558 units on 2/18/20 and with respect to 576 units on 2/16/21, subject to continued employment by the Reporting Person on the remaining vesting dates.

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