Arista Networks, Inc. — Director's Dealing 2021

May 12, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Arista Networks, Inc. (ANET)
CIK: 0001596532
Period of Report: 2021-05-10

Reporting Person: Duda Kenneth (CTO and SVP Software Eng.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-10	Common Stock	S	400	$326.1595	Disposed	41322	Indirect
2021-05-10	Common Stock	S	278	$326.9396	Disposed	41044	Indirect
2021-05-10	Common Stock	S	1404	$329.0556	Disposed	39640	Indirect
2021-05-10	Common Stock	S	1300	$330.1031	Disposed	38340	Indirect
2021-05-10	Common Stock	S	700	$331.0671	Disposed	37640	Indirect
2021-05-10	Common Stock	S	18	$324.2389	Disposed	30332	Indirect
2021-05-10	Common Stock	S	15	$325.6633	Disposed	30317	Indirect
2021-05-10	Common Stock	S	13	$326.2946	Disposed	30304	Indirect
2021-05-10	Common Stock	S	36	$327.9213	Disposed	30268	Indirect
2021-05-10	Common Stock	S	104	$328.7731	Disposed	30164	Indirect
2021-05-10	Common Stock	S	180	$329.8948	Disposed	29984	Indirect
2021-05-10	Common Stock	S	83	$330.9647	Disposed	29901	Indirect
2021-05-10	Common Stock	S	1	$331.84	Disposed	29900	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	811	Direct
Common Stock	123825	Indirect
Common Stock	123825	Indirect
Common Stock	126265	Indirect

Footnotes

F1: 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 14, 2020.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $325.71 to $326.62, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F3: These shares are held in a trust 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.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.75 to $327.44, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.58 to $329.57, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F6: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $329.76 to $330.48, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F7: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.90 to $331.38, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F8: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 14, 2020 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

F9: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.66 to $324.48, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F10: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

F11: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.98 to $325.88, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F12: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.16 to $326.62, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F13: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $327.375 to $328.26, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F14: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.45 to $329.30, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F15: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $329.45 to $330.43, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F16: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.50 to $331.47, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of 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.

F17: Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

F18: Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

F19: These shares are held by a family trust for which the reporting person is co-trustee.