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 *
El-Hibri Fuad
   2. Issuer Name and Ticker or Trading Symbol
Emergent BioSolutions Inc. [EBS] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chairman
(Last)
(First)
(Middle)
400 PROFESSIONAL DRIVE, SUITE 400		 3. Date of Earliest Transaction (Month/Day/Year)
02/28/2017
(Street)

GAITHERSBURG, MD 20879		 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 02/28/2017   M   9,722 A (1) 1,658,795 D  
Common Stock 02/28/2017   F   2,659 D $ 30.63 1,656,136 D  
Common Stock               4,344,250 (2) I By Intervac, L.L.C.
Common Stock               1,524,155 (3) I By Biovac, LLC

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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
Restrictive Stock Units (4) (1) 02/28/2017   A   29,382     (5)   (5) Common Stock 29,382 $ 0 105,576 D  
Restrictive Stock Units (4) (1) 02/28/2017   M     9,722   (6)   (6) Common Stock 9,722 $ 0 95,854 D  
Employee Stock Option (right to buy) $ 30.63 02/28/2017   A   58,747     (7) 02/27/2024 Common Stock 58,747 $ 0 58,747 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
El-Hibri Fuad
400 PROFESSIONAL DRIVE, SUITE 400
GAITHERSBURG, MD 20879		   X   X   Chairman  

Signatures

 /s/ Carl A. Valenstein, attorney-in-fact   03/02/2017
**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) Restricted stock units convert into common stock on a one-for-one basis.
(2) Mr. El-Hibri's wife, individually, and Mr. and Mrs. El-Hibri, as tenants by the entirety, collectively hold an aggregate 40.65% equity interest in Intervac, L.L.C., which in turn is the direct owner of 4,344,250 shares of the Issuer's common stock. Mr. El-Hibri disclaims beneficial ownership of the shares of the Issuer's common stock directly owned by Intervac, L.L.C. for purposes of Section 16 of the Exchange act or otherwise, except to the extent of his pecuniary interest therein.
(3) Mr. El-Hibri holds individually and with his wife, as tenants by the entirety, an aggregate 89.2% equity interest in Biovac, LLC, which in turn is the direct owner of 1,524,155 shares of the Issuer's common stock. Mr. El-Hibri disclaims beneficial ownership of the shares of the Issuer's common stock directly owned by Biovac, LLC for purposes of Section 16 of the Exchange act or otherwise, except to the extent of his pecuniary interest therein.
(4) In connection with the Issuer's spin-off of Aptevo Therapeutics Inc. effective on August 1, 2016 (the "Spin-off"), the Issuer made certain adjustments to the price and number of equity awards held by continuing employees. Accordingly, Mr. El-Hibri, as a continuing Emergent employee with equity awards issued prior to the Spin-off, received an equitable adjustment to the number and grant price of his restricted stock units.
(5) On February 28, 2017, Mr. El-Hibri was granted 29,382 restricted stock units vesting in three equal annual installments beginning on the day prior to the anniversary of the grant date.
(6) On March 1, 2016, Mr. El-Hibri was granted 29,167 restricted stock units (after giving effect to the adjustment in connection with the Spin-off) vesting in three equal annual installments beginning on the day prior to the anniversary of the grant date.
(7) On February 28, 2017, Mr. El-Hibri was granted 58,747 stock options vesting in three equal annual installments beginning on the day prior to the anniversary of the grant date.

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