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 *

KRIENS SCOTT	2. Issuer Name and Ticker or Trading Symbol

JUNIPER NETWORKS INC [ JNPR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

1133 INNOVATION WAY	3. Date of Earliest Transaction (MM/DD/YYYY)

5/12/2021		
(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 	5/12/2021 	 	M	  	9862 	A	$0.00 	9862 	D 	 	
Common Stock 	 	 	 	  	 	 	 	195090 	I 	by Trust (1)	
Common Stock 	 	 	 	  	 	 	 	2000000 	I 	by CR Unitrust (2)	
Common Stock 	 	 	 	  	 	 	 	180000 	I 	by KDI Trust LP (3)	

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					
RSU Award 	$0.00 	5/13/2021 	 	A 	  	10761  	  	 (4)	 (4)	Common Stock 	10761 	$0.00 (5)	10761 	D 	 	
RSU Award 	$0.00 	5/12/2021 	 	M 	  	  	9862  	 (6)	 (6)	Common Stock 	9862 	$0.00 (5)	0 	D 	 	

Explanation of Responses:	
(1) 	Includes 97,545 shares held in trust of which Mr. Kriens is the sole trustee, and 97,545 shares held in trust of which Mr. Kriens' spouse is the trustee.	
(2) 	Shares held by a charitable remainder unitrust of which the reporting person is a trustee and of which the reporting person and his spouse are beneficiaries. The reporting person continues to report beneficial ownership of all the common stock held by the charitable remainder unitrust but disclaims beneficial ownership except to the extent of his and his spouse's pecuniary interest therein.	
(3) 	Shares held by the KD1 Trust LP, of which the reporting person holds a pecuniary interest.	
(4) 	The restricted stock unit is automatically granted pursuant to the terms of the Juniper Networks, Inc. 2015 Equity Incentive Plan to each non-employee director who is elected at (or whose term continues after) the company's annual stockholder meeting. The award will become 100% vested on the earlier of (A) May 13, 2022, and (B) the day prior to the date of the company's next annual stockholder meeting, subject in either case to the director maintaining continuous status as a director through the vesting date.	
(5) 	Column 8 is not an applicable reportable field.	
(6) 	Pursuant to the terms of the Juniper Networks, Inc. 2015 Equity Incentive Plan, the restricted stock unit ("RSU") award becomes 100% vested on the earlier of (A) the one year anniversary of the grant date, and (B) the day prior to the date of the Company's next annual stockholder meeting, subject to the individual maintaining continuous status as a director through the vesting date. The RSU award was granted at the 2020 annual stockholder meeting, which was held on May 14, 2020. The company held its 2021 annual stockholder meeting on May 13, 2021; accordingly, this RSU award vested in full on May 12, 2021.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
KRIENS SCOTT
1133 INNOVATION WAY
SUNNYVALE, CA 94089	X				

Signatures		
By: /s/Robert Mobassaly, as attorney-in-fact For: Scott G. Kriens		5/14/2021	
**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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