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 *

Welch David F	2. Issuer Name and Ticker or Trading Symbol

INFINERA Corp [ INFN ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

C/O INFINERA CORPORATION, 140 CASPIAN COURT	3. Date of Earliest Transaction (MM/DD/YYYY)

10/2/2017		
(Street)

SUNNYVALE, CA 94089
(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  	10/2/2017  	 	S (1)	  	20000  	D	$9.0233   (2)	744351  	I  	See Footnote   (3)	
Common Stock  	 	 	 	  	 	 	 	292293  	I  	See Footnote   (4)	
Common Stock  	 	 	 	  	 	 	 	528150  	I  	See Footnote   (5)	
Common Stock  	 	 	 	  	 	 	 	140000  	I  	See Footnote   (6)	
Common Stock  	 	 	 	  	 	 	 	2500  	I  	See Footnote   (7)	

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					
Employee Stock Option (Right to Buy)  	$7.61  	 	 	   	  	  	  	  (8)	2/28/2018  	Common Stock  	2817.0  	 	2817  	D  	 	
Employee Stock Option (Right to Buy)  	$7.61  	 	 	   	  	  	  	  (8)	2/28/2018  	Common Stock  	81683.0  	 	81683  	D  	 	
Employee Stock Option (Right to Buy)  	$7.11  	 	 	   	  	  	  	  (8)	2/10/2019  	Common Stock  	100000.0  	 	100000  	D  	 	
Employee Stock Option (Right to Buy)  	$7.45  	 	 	   	  	  	  	  (8)	8/10/2019  	Common Stock  	150000.0  	 	150000  	D  	 	
Employee Stock Option (Right to Buy)  	$8.58  	 	 	   	  	  	  	  (8)	2/10/2021  	Common Stock  	20250.0  	 	20250  	D  	 	
Employee Stock Option (Right to Buy)  	$8.58  	 	 	   	  	  	  	  (8)	2/10/2021  	Common Stock  	60750.0  	 	60750  	D  	 	
Employee Stock Option (Right to Buy)  	$8.58  	 	 	   	  	  	  	  (8)	2/10/2021  	Common Stock  	39465.0  	 	39465  	D  	 	
Employee Stock Option (Right to Buy)  	$8.58  	 	 	   	  	  	  	  (8)	2/10/2021  	Common Stock  	41535.0  	 	41535  	D  	 	
Restricted Stock Units  	  (9)	 	 	   	  	  	  	  (10)	  (10)	Common Stock  	9590.0  	 	9590  	D  	 	
Restricted Stock Units  	  (9)	 	 	   	  	  	  	  (11)	  (11)	Common Stock  	14385.0  	 	14385  	D  	 	
Restricted Stock Units  	  (9)	 	 	   	  	  	  	  (12)	  (12)	Common Stock  	65137.0  	 	65137  	D  	 	
Restricted Stock Units  	  (9)	 	 	   	  	  	  	  (13)	  (13)	Common Stock  	114831.0  	 	114831  	D  	 	

Explanation of Responses:	
(1) 	This sale was made in connection with a Rule 10b5-1 Trading Plan for The Welch Family Trust u/a dtd 04/03/1996 ("The Welch Family Trust").	
(2) 	This price represents the weighted average sale price of the shares sold by The Welch Family Trust in multiple transactions at prices ranging from $9.00 to $9.09 per share. Upon request by the staff of the Securities and Exchange Commission, Infinera Corporation (the "Company") or a security holder of the Company, Dr. Welch will provide full information regarding the number of shares sold at each separate price.	
(3) 	These shares are held directly by The Welch Family Trust, for which Dr. Welch is a trustee.	
(4) 	These shares are held directly by LRFA, LLC, for which Dr. Welch is the sole managing member.	
(5) 	These shares are held directly by The Welch Family Heritage Trust I u/I dated 9/24/01, for which Dr. Welch is a trustee.	
(6) 	These shares are held directly by The Welch Group, L.P., for which Dr. Welch is a general partner.	
(7) 	These shares are held directly by Dr. Welch as a trustee for his children. Dr. Welch disclaims beneficial ownership of the shares held in trust for his children, and this report shall not be deemed an admission that Dr. Welch is the beneficial owner of the shares held in trust for his children for purposes of Section 16 or for any other purpose.	
(8) 	This option is fully-vested.	
(9) 	Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock of the Company.	
(10) 	These RSUs vest in three annual installments beginning on May 5, 2016.	
(11) 	These RSUs vest in full on May 5, 2018.	
(12) 	These RSUs vest in four annual installments beginning on May 5, 2017.	
(13) 	These RSUs vest in four annual installments beginning on May 5, 2018.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Welch David F
C/O INFINERA CORPORATION
140 CASPIAN COURT
SUNNYVALE, CA 94089	X		President		

Signatures		
/s/ Michael Post, by Power of Attorney		10/4/2017	
** 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.	
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