Sec Form 4 Filing - Doyle Christopher Marc @ DUPONT E I DE NEMOURS & CO - 2017-08-31

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 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 Doyle Christopher Marc 2. Issuer Name and Ticker or Trading Symbol DUPONT E I DE NEMOURS & CO [ DD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Executive Vice President (Last) (First) (Middle) CHESTNUT RUN PLAZA 730, 974 CENTRE ROAD 3. Date of Earliest Transaction (MM/DD/YY) 08/31/2017 (Street) WILMINGTON, DE19805 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 08/31/2017 D 72,881.5123 ( 1 ) D 0 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 Employee Stock Options (right to buy) $ 59.6543 08/31/2017 D 3,161 ( 2 ) ( 2 ) 02/04/2021 Common Stock 3,161 ( 2 ) 0 D Employee Stock Options (right to buy) $ 71.0648 08/31/2017 D 17,891 ( 3 ) ( 3 ) 02/03/2022 Common Stock 17,891 ( 3 ) 0 D Employee Stock Options (right to buy) $ 58.76 08/31/2017 D 44,777 ( 4 ) ( 4 ) 02/02/2026 Common Stock 44,777 ( 4 ) 0 D Employee Stock Options (right to buy) $ 76.17 08/31/2017 D 48,049 ( 5 ) ( 5 ) 02/01/2027 Common Stock 48,049 ( 5 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Doyle Christopher Marc CHESTNUT RUN PLAZA 730 974 CENTRE ROAD WILMINGTON, DE19805 Executive Vice President Signatures Erik T. Hoover by Power of Attorney 09/05/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Disposed of pursuant to merger agreement between issuer and Dow Chemical Company in exchange for 93,433 shares or stock units, as applicable, of DowDuPont common stock having a market value of $67.18 per share or stock unit, as applicable, on the effective date of the merger. ( 2 )This option, which provided for vesting in three equal annual installments beginning February 5, 2015, was assumed by DowDuPont in the merger and exchanged for 4,052 options at a grant price of $46.54. ( 3 )This option, which provided for vesting in three equal annual installments beginning February 4, 2016, was assumed by DowDuPont in the merger and exchanged for 22,936 options at a grant price of $55.44. ( 4 )This option, which provided for vesting in three equal annual installment beginning February 3, 2017, was assumed by DowDuPont in the merger and exchanged for 57,404 options at a grant price of $45.84. ( 5 )This option, which provided for vesting in three equal annual installments beginning February 2, 2018, was assumed by DowDuPont in the merger and exchanged for 61,598 options at a grant price of $59.42.

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