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 * Duda Kenneth 2. Issuer Name and Ticker or Trading Symbol Arista Networks, Inc. [ ANET ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
CTO and SVP Software Eng.
(Last)         (First)         (Middle)
5453 GREAT AMERICA PARKWAY
3. Date of Earliest Transaction (MM/DD/YYYY)
10/12/2020
(Street)
SANTA CLARA, CA 95054
(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  10/12/2020    M(1)    10000  A $3.33  17310  D   
Common Stock  10/12/2020    S(1)    800  D $221.995 (2) 16510  D   
Common Stock  10/12/2020    S(1)    1200  D $223.3733 (3) 15310  D   
Common Stock  10/12/2020    S(1)    2300  D $224.3607 (4) 13010  D   
Common Stock  10/12/2020    S(1)    600  D $225.4467 (5) 12410  D   
Common Stock  10/12/2020    S(1)    1200  D $226.4342 (6) 11210  D   
Common Stock  10/12/2020    S(1)    2200  D $227.9241 (7) 9010  D   
Common Stock  10/12/2020    S(1)    1700  D $228.5365 (8) 7310  D   
Common Stock  10/12/2020    S(9)    16  D $221.3944 (10) 54248  I  By Childrens' Trust (11)
Common Stock  10/12/2020    S(9)    85  D $222.3351 (12) 54163  I  By Childrens' Trust (11)
Common Stock  10/12/2020    S(9)    163  D $223.5479 (13) 54000  I  By Childrens' Trust (11)
Common Stock  10/12/2020    S(9)    207  D $224.4496 (14) 53793  I  By Childrens' Trust (11)
Common Stock  10/12/2020    S(9)    44  D $225.3107 (15) 53749  I  By Childrens' Trust (11)
Common Stock  10/12/2020    S(9)    147  D $226.3753 (16) 53602  I  By Childrens' Trust (11)
Common Stock  10/12/2020    S(9)    128  D $227.7657 (17) 53474  I  By Childrens' Trust (11)
Common Stock  10/12/2020    S(9)    86  D $228.5033 (18) 53388  I  By Childrens' Trust (11)
Common Stock  10/12/2020    S(19)    14  D $221.8893 (20) 22706  I  By Foundation (21)
Common Stock  10/12/2020    S(19)    15  D $222.6673 (22) 22691  I  By Foundation (21)
Common Stock  10/12/2020    S(19)    43  D $223.723 (23) 22648  I  By Foundation (21)
Common Stock  10/12/2020    S(19)    49  D $224.611 (24) 22599  I  By Foundation (21)
Common Stock  10/12/2020    S(19)    22  D $225.9945 (25) 22577  I  By Foundation (21)
Common Stock  10/12/2020    S(19)    23  D $226.6557 (26) 22554  I  By Foundation (21)
Common Stock  10/12/2020    S(19)    32  D $227.8838 (27) 22522  I  By Foundation (21)
Common Stock  10/12/2020    S(19)    17  D $228.5482 (28) 22505  I  By Foundation (21)
Common Stock                 273944  I  By GRAT JD (29)
Common Stock                 273944  I  By GRAT KD (30)
Common Stock                 59856  I  by Trust (31)

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
Non-Qualified Stock Option (right to buy)  $3.33  10/12/2020    M (1)       10000    (32) 10/3/2021  Common Stock  10000  $0.0  40000  D   

Explanation of Responses:
(1)  The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 4, 2020.
(2)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $221.50 to $222.28 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(3)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $222.74 to $223.72 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(4)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $223.81 to $224.79 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(5)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.05 to $226.00 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(6)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $226.12 to $226.75 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(7)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $227.29 to $228.27 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(8)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $228.34 to $228.95 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(9)  The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on December 9, 2019.
(10)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $220.91 to $221.71 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(11)  These shares are held in multiple trusts for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.
(12)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $221.95 to $222.89 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(13)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $222.96 to $223.95 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(14)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $223.96 to $224.93 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(15)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $224.97 to $225.96 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(16)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $226.00 to $226.92 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(17)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $227.23 to $228.22 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(18)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $228.23 to $229.00 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(19)  The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 12, 2019 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.
(20)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $221.22 to $222.14 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(21)  These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.
(22)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $222.23 to $223.16 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(23)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $223.27 to $224.21 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(24)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $224.28 to $225.23 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(25)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.32 to $226.30 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(26)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $226.35 to $227.30 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(27)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $227.37 to $228.34 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(28)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $228.37 to $228.97 inclusive. The reporting person undertakes to provide Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(29)  Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
(30)  Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
(31)  These shares are held by a family trust for which the reporting person is co-trustee.
(32)  1/4th of the 100,000 shares subject to the option vested and became exercisable on September 30, 2013 and 1/48th of the shares subject to the option vested each month thereafter.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Duda Kenneth
5453 GREAT AMERICA PARKWAY
SANTA CLARA, CA 95054


CTO and SVP Software Eng.

Signatures
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda 10/14/2020
**Signature of Reporting Person Date