Sec Form 3 Filing - McConnaughey Tammy M @ ALLIANCE DATA SYSTEMS CORP - 2021-01-26

FORM 3 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 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 McConnaughey Tammy M 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, Opn's & Credit Risk, Card (Last) (First) (Middle) 3075 LOYALTY CIRCLE 3. Date of Earliest Transaction (MM/DD/YY) 01/26/2021 (Street) COLUMBUS, OH43219 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 24,209.055 ( 1 ) D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 McConnaughey Tammy M 3075 LOYALTY CIRCLE COLUMBUS, OH43219 EVP, Opn's & Credit Risk, Card Signatures Cynthia L. Hageman, Attorney in Fact 02/05/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The total number of securities beneficially owned includes: (a) 13,553.055 unrestricted shares; (b) 267 unvested units from an award of 783 time-based restricted stock units granted 2/15/18, which are scheduled to vest on 2/16/21; (c) 807 unvested units from an award of 2,375 performance-based restricted stock units granted 2/15/18, which are scheduled to vest on 2/16/21; (d) 800 unvested units from an award of 1,193 unvested time-based restricted stock units granted 2/15/19, of which 394 units will vest on 2/16/21 and 406 units will vest on 2/15/22; (e) 1,757 unvested time-based restricted stock units granted 2/18/20, of which 579 units will vest on 2/18/21, 580 units will vest on 2/18/22 and 598 units will vest on 2/18/23;

Remarks: (1) and (f) 7,025 unvested performance-based restricted stock units granted 2/18/20, 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 2/18/21 and 2/18/22 and with respect to 34% of such shares on 2/18/23 contingent on meeting an EBT metric for 2020 and subject to continued employment by the Reporting Person on the vesting dates.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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