Sec Form 4 Filing - Athreya Anand @ JUNIPER NETWORKS INC - 2018-03-16

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 Athreya Anand 2. Issuer Name and Ticker or Trading Symbol JUNIPER NETWORKS INC [ JNPR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Development Officer (Last) (First) (Middle) 1133 INNOVATION WAY 3. Date of Earliest Transaction (MM/DD/YY) 03/16/2018 (Street) SUNNYVALE, CA94089 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 03/17/2018 M 19,563 A $ 0 98,961 D Common Stock 03/17/2018 F( 1 ) 6,765 D $ 26.29 92,196 D Common Stock 03/18/2018 M 15,608 A $ 0 107,804 D Common Stock 03/18/2018 F( 1 ) 5,731 D $ 26.29 102,073 D Common Stock 03/20/2018 M 21,751 A $ 0 123,824 D Common Stock 03/20/2018 F( 1 ) 10,785 D $ 25.42 113,039 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 Executi on 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 Performance Stock Unit $ 0 03/16/2018 A 12,936 ( 2 ) 02/16/2019 02/16/2020 Common Stock 12,936 $ 0 ( 3 ) 12,936 D Performance Stock Unit $ 0 03/16/2018 A 102,000 ( 4 ) 03/16/2021 03/16/2021 Common Stock 102,000 $ 0 ( 3 ) 102,000 D RSU Award $ 0 03/20/2018 M 21,751 03/20/2016( 5 ) 03/20/2018 Common Stock 21,751 $ 0 ( 3 ) 0 D RSU Award $ 0 03/18/2018 M 15,608 03/18/2017( 5 ) 03/18/2019 Common Stock 15,608 $ 0 ( 3 ) 15,608 D RSU Award $ 0 03/17/2018 M 19,563 03/17/2018( 5 ) 03/17/2020 Common Stock 19,563 $ 0 ( 3 ) 37,974 D RSU Award $ 0 03/16/2018 A 34,000 03/16/2019( 5 ) 03/16/2021 Common Stock 34,000 $ 0 ( 3 ) 34,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Athreya Anand 1133 INNOVATION WAY SUNNYVALE, CA94089 Chief Development Officer Signatures By: Robert Mobassaly: Attorney in Fact For: Athreya Anand S 03/20/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents shares withheld from the released share award for the payment of applicable income and payroll withholding taxes due on release. ( 2 )Represents the maximum quantity of shares issuable. The exact number of shares issuable will be determined based on achievement of certain Company performance targets for the 2018 fiscal year, as determined by the Compensation Committee of the Board. The executive can earn either 0% or 100% of the target shares that will vest 50% each year over a two year period. ( 3 )Column 8 is not an applicable reportable field. ( 4 )Represents the maximum quantity of shares issuable. The exact number of shares issuable with respect to the performance award will be determined based on achievement of certain Company performance targets over 3 years. The executive can earn between 0% and 200% of the target shares. No shares vest or are issued until after the performance period. ( 5 )This awards vests from the original grant date as to thirty-four percent on the one year anniversary of the grant date and thirty-three percent annually on the second anniversary and third anniversary.

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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