1 unchanged sentence
Securities Trading Plans of Directors and Executive Officers
−Removed: No officers or directors, as defined in Rule 16a-1(f), adopted or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as defined in Regulation S-K Item 408, during the last fiscal quarter.
+Added: During our last fiscal quarter, the following director and officers, as defined in Rule 16a-1(f), adopted a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408, as follows:
+Added: On March 13, 2026 , Kenneth Duda , our President, Chief Technology Officer and Director , adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 520,000 shares of our common stock held in various trusts for the benefit of Mr.
+Added: Duda’s family, for which Mr.
+Added: Duda is the beneficial owner and which is intended to be treated as a single plan.
+Added: The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c).
+Added: The duration of the trading arrangement is until June 21, 2027 , or earlier if all transactions under the trading arrangement are completed.
+Added: No other officers or directors, as defined in Rule 16a-1(f), adopted or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as defined in Regulation S-K Item 408, during the last fiscal quarter.
Exhibit Number Description
−Removed: 3.1 Amended and Restated Bylaws of Arista Networks, Inc.
−Removed: dated September 5, 2025
−Removed: 31.1 Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
−Removed: 31.2 Certification of the Chief Financial Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002.
+Added: 31.1 Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/Rule 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
+Added: 31.2 Certification of Chief Financial Officer pursuant to Rule 1 3a-14(a)/Rule 15d-14(a), as adopted pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002.
32.1* Certifications of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C.
−Removed: Section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002.
+Added: Section 1350, as adopted pursuant to S ection 906 of the Sarbanes-Oxley Act of 2002.
101.INS Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
10 unchanged sentences
Arista Networks, Inc.
−Removed: November 4, 2025 By:
+Added: May 5, 2026 By:
/s/ JAYSHREE ULLAL
2 unchanged sentences
(Principal Executive Officer)
−Removed: November 4, 2025 By:
+Added: May 5, 2026 By:
/s/ CHANTELLE BREITHAUPT
3 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.