Sec Form 4 Filing - Greenleaf Peter @ Cerecor Inc. - 2018-05-18

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 Greenleaf Peter 2. Issuer Name and Ticker or Trading Symbol Cerecor Inc. [ CERC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) C/O CERECOR INC., 400 EAST PRATT STREET, SUITE 606 3. Date of Earliest Transaction (MM/DD/YY) 05/18/2018 (Street) BALTIMORE, MD21202 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 05/18/2018 P 12,500 A $ 3.98 ( 1 ) 412,500 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 Stock Option (Right to Buy) $ 0.8 ( 2 ) 05/11/2027 Common Stock 16,714 16,714 D Employee Stock Option (Right to Buy) $ 0.57 06/30/2018( 3 ) 06/29/2027 Common Stock 8,357 8,357 D Employee Stock Option (Right to Buy) $ 4.24 ( 4 ) 03/27/2028 Common Stock 500,000 500,000 D Employee Stock Option (Right to Buy) $ 4.24 ( 5 ) 03/27/2028 Common Stock 500,000 500,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Greenleaf Peter C/O CERECOR INC. 400 EAST PRATT STREET, SUITE 606 BALTIMORE, MD21202 X Chief Executive Officer Signatures /s/ Robert Swedberg, by Power of Attorney 05/21/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This transaction was executed in multiple trades ranging from $3.95 to $4.00. The price reported in Column 4 is a weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder full information regarding the number of shares and prices at which the transactions were effected. ( 2 )The stock option will vest in three substantially equal annual installments on May 11, 2018, 2019 and 2020, subject to the Reporting Person's continued service on each such vesting date. ( 3 )The stock options will vest in full on June 30, 2018, subject to the grantees continued service on such vesting date. ( 4 )The stock option will vest 25% on the first anniversary of the date of grant and the remaining 75% of the shares subject to the stock option shall vest in equal monthly installments on each monthly anniversary date of the first vesting date over the following 48 months beginning on April 27, 2019, provided the Reporting Person is then an officer of the Issuer on each such vesting date. ( 5 )The stock option will vest in full upon the Issuer's common stock closing at or above $12.50 per share for three consecutive trading days, provided the Reporting Person is then an officer of the Issuer on each such vesting date.

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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