Ownership Submission
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 *
NELMS DAVID W
  2. Issuer Name and Ticker or Trading Symbol
Discover Financial Services [DFS]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chairman and CEO
(Last)
(First)
(Middle)
2500 LAKE COOK ROAD
3. Date of Earliest Transaction (Month/Day/Year)
10/01/2012
(Street)

RIVERWOODS, IL 60015
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 10/01/2012   M   113,856 A $ 18.87 2,078,341 D  
Common Stock 10/01/2012   S   113,856 D $ 39.97 (1) 1,964,485 D  
Common Stock 10/01/2012   M   91,421 A $ 27.6 2,055,906 D  
Common Stock 10/01/2012   S   91,421 D $ 39.74 (4) 1,964,485 D  
Common Stock 10/01/2012   M   32,603 A $ 27.6 1,997,088 D  
Common Stock 10/01/2012   S   32,603 D $ 39.58 (7) 1,964,485 D  
Common Stock 10/02/2012   G V 25,000 D $ 0 1,939,485 D  
Common Stock               955.53 I By ESOP
Common Stock               7,814.69 I ESPP

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
Employee Stock Option $ 18.87 10/01/2012   M     113,856   (2) 01/02/2014 Common Stock 113,856 (3) 0 D  
Employee Stock Option $ 27.6 10/01/2012   M     91,421   (5) 01/02/2013 Common Stock 91,421 (6) 0 D  
Employee Stock Option $ 27.6 10/01/2012   M     32,603   (8) 01/02/2013 Common Stock 32,603 (9) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
NELMS DAVID W
2500 LAKE COOK ROAD
RIVERWOODS, IL 60015
  X     Chairman and CEO  

Signatures

 /s/ Simon Halfin as Attorney-in-Fact for David W. Nelms   10/03/2012
**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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.75 to $40.06, inclusive. The reporting person undertakes to provide to Discover Financial Services, any security holder of Discover Financial Services, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(2) This option fully vested on January 2, 2007.
(3) In connection with Discover Financial Services' Spin-Off from Morgan Stanley, this option was granted by Discover Financial Services in replacement of an option to purchase 38,753 shares of common stock of Morgan Stanley at an exercise price of $55.45.
(4) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.66 to $39.85, inclusive. The reporting person undertakes to provide to Discover Financial Services, any security holder of Discover Financial Services, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(5) This option fully vested on November 30, 2007.
(6) In connection with Discover Financial Services' Spin-Off from Morgan Stanley, this option was granted by Discover Financial Services in replacement of an option to purchase 31,117 shares of common stock of Morgan Stanley at an exercise price of $81.10.
(7) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.52 to $39.67, inclusive. The reporting person undertakes to provide to Discover Financial Services, any security holder of Discover Financial Services, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(8) This option fully vested on March 27, 2007.
(9) In connection with Discover Financial Services' Spin-Off from Morgan Stanley, this option was granted by Discover Financial Services in replacement of an option to purchase 11,097 shares of common stock of Morgan Stanley at an exercise price of $81.10.

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