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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

VON RICKENBACH JOSEF H 		2. Issuer Name and Ticker or Trading Symbol

PAREXEL INTERNATIONAL CORP [ PRXL ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Chairman & CEO
(Last)          (First)          (Middle)

PAREXEL INTERNATIONAL CORPORATION, 195 WEST STREET 		3. Date of Earliest Transaction (MM/DD/YYYY)

9/8/2017
(Street)

WALTHAM, MA 02451
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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   9/8/2017     G   V 22795   D $0   514065   D    
Common Stock   9/10/2017     M    9308   A $0   523373   D    
Common Stock   9/11/2017     F    15402   D $87.77   507971   (1) D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Restricted Stock Units     (2) 9/8/2017     A      2028       9/10/2017     (3) Common Stock   2028   $0   9308   D    
Restricted Stock Units     (2) 9/8/2017     A      1755       9/9/2018     (4) Common Stock   1755   $0   5055   D    
Restricted Stock Units     (2) 9/8/2017     A      2812       9/14/2019     (5) Common Stock   2812   $0   2812   D    
Restricted Stock Units     (2) 9/10/2017     M         9308    9/10/2017     (3) Common Stock   9308   $0   0   D    

Explanation of Responses:
(1)  Includes 507 shares of common stock acquired pursuant to the Issuer's 2000 Employee Stock Purchase Plan.
(2)  Each restricted stock unit represents a contingent right to receive one share of PAREXEL International Corporation common stock.
(3)  The restricted stock units awarded pursuant to the PAREXEL International Corporation 2010 Stock Incentive Plan will vest in full on September 10, 2017. Vested shares will be delivered to the reporting person as soon as practicable following the vesting date, and in any event no later than December 31, 2017.
(4)  The restricted stock units awarded pursuant to the PAREXEL International Corporation Stock Incentive Plans will vest in full on September 9, 2018. Vested shares will be delivered to the reporting person as soon as practicable following the vesting date, and in any event no later than December 31, 2018.
(5)  These restricted stock units awarded pursuant to the PAREXEL International Corporation 2015 Stock Incentive Plan will vest in full on September 14, 2019 subject to the satisfaction of certain performance criteria. Vested shares will be delivered to the reporting person as soon as practicable following the vesting date, and in any event no later than December 31, 2019.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
VON RICKENBACH JOSEF H
PAREXEL INTERNATIONAL CORPORATION
195 WEST STREET
WALTHAM, MA 02451 		X
Chairman & CEO

Signatures
/s/Douglas A. Batt, Attorney-In-Fact 9/12/2017
** Signature of Reporting Person 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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