2 unchanged sentences
Management, with the participation of our Chief Executive Officer (“CEO”) and our Chief Financial Officer (“CFO”), evaluated the effectiveness of our disclosure controls and procedures as of December 31, 2025.
−Removed: The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms.
+Added: The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the Commission's rules and forms.
Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.
−Removed: Based on the evaluation of our disclosure controls and procedures as of December 31, 2024, our CEO and CFO concluded that, as of such date, our disclosure controls and procedures are designed at a reasonable assurance level and are effective to provide reasonable assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in Securities and Exchange Commission (SEC) rules and forms, and that such information is accumulated and communicated to our management, including our CEO and CFO, as appropriate, to allow timely decisions regarding required disclosure.
+Added: Based on the evaluation of our disclosure controls and procedures as of December 31, 2025, our CEO and CFO concluded that, as of such date, our disclosure controls and procedures are designed at a reasonable assurance level and are effective to provide reasonable assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in Commission rules and forms, and that such information is accumulated and communicated to our management, including our CEO and CFO, as appropriate, to allow timely decisions regarding required disclosure.
Changes in Internal Control over Financial Reporting
−Removed: There were no changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Securities and Exchange Act of 1934, as amended, that occurred during the quarter ended December 31, 2024 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
+Added: There were no changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act, as amended, that occurred during the quarter ended December 31, 2025 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
Inherent Limitations of Internal Controls
13 unchanged sentences
(i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets;
−Removed: reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S.
+Added: (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S.
generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors;
−Removed: and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on the Consolidated Financial Statements.
+Added: and (iii) provide reasonable assurance regarding prevention or timely
+Added: detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on the Consolidated Financial Statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements.
5 unchanged sentences
Securities Trading Plans of Directors and Executive Officers
−Removed: During our last fiscal quarter, the following directors and officer, as defined in Rule 16a-1(f), adopted a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408, as follows:
−Removed: On December 13, 2024 , Jayshree Ullal , our Chairperson and Chief Executive Officer , adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of:
+Added: During our last fiscal quarter, each of the following directors 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 November 14, 2025 , Jayshree Ullal , our Chairperson and Chief Executive Officer , adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of:
(i) up to 5,726,000 shares of our common stock;
and (ii) a number of shares of our common stock that may be earned in connection with grants of performance-based restricted stock units, which cannot be determined at this time.
+Added: The duration of the trading arrangement is until February 20, 2027 , or earlier if all transactions under the trading arrangement are completed.
The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c).
−Removed: The duration of the trading arrangement is until April 17, 2026 , or earlier if all transactions under the trading arrangement are completed.
+Added: On November 21, 2025 , Yvonne Wassenaar , a member of our Board of Directors , adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of up to an aggregate of 5,576 shares of our common stock.
+Added: The duration of the trading arrangement is until February 26, 2027 , or earlier if all transactions under the trading arrangement are completed.
+Added: The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c).
+Added: On December 11, 2025 , Chantelle Breithaupt , our Senior Vice President and Chief Financial Officer , adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of a number of shares of our common stock that may be earned in connection with grants of performance-based restricted stock units, which cannot be determined at this time.
+Added: The duration of the trading arrangement is until December 31, 2026 , or earlier if all transactions under the trading arrangement are completed.
+Added: The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c).
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.
2 unchanged sentences
Directors, Executive Officers, and Corporate Governance
−Removed: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2025 Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
+Added: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2026 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
Executive Compensation
−Removed: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2025 Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
+Added: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2026 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
−Removed: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2025 Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
+Added: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2026 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
Certain Relationships and Related Transactions and Director Independence
−Removed: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2025 Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
+Added: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2026 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
Principal Accountant Fees and Services
−Removed: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2025 Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
+Added: Information required by this Item is incorporated herein by reference to our definitive proxy statement with respect to our 2026 Annual Meeting of Stockholders to be filed with the Commission within 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.
Exhibits and Financial Statement Schedules
11 unchanged sentences
10-Q 001-36468 3.1 8/8/2014
−Removed: 3.2 Amended and Restated Bylaws of Arista Networks, Inc.
−Removed: dated December 18, 2023
−Removed: 8-K 001-36468 3.1 12/20/2023
3.2 Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Registrant
8-K 001-36468 3.1 12/3/2024
+Added: 3.3 Amended and Restated Bylaws of Arista Networks, Inc.
+Added: dated September 5 , 20 25
+Added: 8-K 001-36468 3.1 9/8/2025
4.1 Form of the Registrant's common stock certificate.
8 unchanged sentences
10.4 † 2014 Equity Incentive Plan.
+Added: 10-K 001-36468 10.4 2/19/2025
10.5 † 2014 Employee Stock Purchase Plan.
+Added: 10-K 001-36468 10.5 2/19/2025
10.6 **† Offer Letter, dated October 17, 2004, by and between the Registrant and Kenneth Duda.
S-1 333-194899 10.6 3/31/2014
−Removed: 10.7 † Offer Letter, dated June 8, 2007, by and between the Registrant and Anshul Sadana.
−Removed: S-1 333-194899 10.7 3/31/2014
10.7 † Offer Letter, dated August 1, 2008, by and between the Registrant and Jayshree Ullal.
2 unchanged sentences
S-1 333-194899 10.9 3/31/2014
−Removed: 10.11 Lease between Arista Networks, Inc.
−Removed: and The Irvine Company LLC, dated August 10, 2012, as amended on February 28, 2013.
−Removed: S-1 333-194899 10.15 3/31/2014
−Removed: 10.12 Second Amendment to Lease, by and between Arista Networks, Inc.
−Removed: and The Irvine Company LLC, dated July 30, 2014.
−Removed: 10-Q 001-36468 10.1 8/8/2014
−Removed: 10.13 License Agreement, dated November 30, 2004, by and between the Registrant and OptumSoft, Inc.
−Removed: S-1 333-194899 10.16 3/31/2014
−Removed: 10.14‡ Manufacturing Services Letter Agreement, dated February 5, 2007, between the Registrant and Jabil Circuit, Inc.
−Removed: S-1 333-194899 10.17 3/31/2014
10.9 † Employee Incentive Plan.
S-1/A 333-194899 10.21 4/21/2014
−Removed: 10.16 † Offer Letter, dated May 18, 2015, by and between the Registrant and Ita Brennan.
−Removed: 8-K 001-36468 10.1 5/14/2015
−Removed: 10.17 † Severance Agreement, effective May 18, 2015, by and between the Registrant and Ita Brennan.
−Removed: 8-K 001-36468 10.2 5/14/2015
10.10 † 2015 Global Sales Incentive Plan.
10-Q 001-36468 10.3 5/5/2016
−Removed: 10.19 † Offer letter, dated January 2, 2013, by and between the Registrant and Marc Taxay.
−Removed: 10-Q 001-36468 10.1 5/8/2017
−Removed: 10.20 † Severance Agreement, dated March 30, 2015, by and between the Registrant and Marc Taxay.
−Removed: 10-Q 001-36468 10.2 5/8/2017
−Removed: 10.21 † Offer letter, dated February 14, 2017, by and between the Registrant and John McCool.
−Removed: 10-Q 001-36468 10.3 5/8/2017
−Removed: 10.22 † Severance Agreement, dated March 20, 2017, by and between the Registrant and John McCool.
+Added: 10.11** † Form of offer letter, dated February 14, 2017, by and between the Registrant and John McCool.
10-Q 001-36468 10.3 5/8/2017
−Removed: 10.23 ‡ Term Sheet of Mutual Release and Settlement Agreement, dated August 6, 2018, between the Registrant and Cisco Systems, Inc.
+Added: 10.12 † Form of Severance Agreement by and between the Registrant and John McCool.
10-Q 001-36468 10.4 5/8/2017
−Removed: 10.24 ‡ Mutual Release and Settlement Agreement, dated August 6, 2018, by and between the Registrant and Cisco Systems, Inc.
−Removed: 10-K 001-36468 10.24 2/15/2019
10.13 † Awake Security, Inc.
1 unchanged sentence
S-8 333-249591 99.1 10/22/2020
−Removed: Incorporated by Reference
−Removed: Exhibit Number Description Form File No.
−Removed: Exhibit Filing Date Filed Herewith
−Removed: 10.26 Third Amendment to Lease, by and between Arista Networks, Inc.
−Removed: and The SANTA CLARA GATEWAY I LLC, dated February 1, 2023
−Removed: 10-K 001-36468 10.1 2/13/2023
10.14**† Letter Agreement by and between the Company and Chantelle Breithaupt, dated October 15, 2023
+Added: 10.15**† Severance Agreement by and between the Company and Chantelle Breithaupt
+Added: 10.16**† Letter Agreement by and between the Company and Todd Nightingale, dated June 12, 2025
8-K 001-36468 10.1 6/16/2025
−Removed: 10.28 Form of Severance Agreement by and between the Company and Chantelle Breithaupt
+Added: 10.17**† Severance Ag reement by and between the Company and Todd Nightingale
8-K 001-36468 10.2 6/16/2025
−Removed: 10.29** Consulting Agreement between the Company and Anshul Sadana, dated May 21, 2024
+Added: 10.18**† Consulting Agreement between the Company and Marc Taxay, dated May 6, 2025
+Added: 10Q 001-36468 10.3 8/6/2025
19.0 Insider Trading Policy
+Added: 10-K 001-36468 19.0 2/19/2025
21.1 List of Subsidiaries of the Registrant .
+Added: 10-K 001-36468 21.1 2/19/2025
23.1 Consent of Independent Registered Public Accounting Firm.
6 unchanged sentences
10-K 001-36468 97.1 2/13/2024
+Added: Incorporated by Reference
+Added: Exhibit Number Description Form File No.
+Added: Exhibit Filing Date Filed Herewith
101.INS XBRL Instance Document.
18 unchanged sentences
Jayshree Ullal
−Removed: President, Chief Executive Officer and Chairperson of the Board
+Added: Chief Executive Officer and Chairperson of the Board
(Principal Executive Officer)
3 unchanged sentences
Signature Title Date
−Removed: /s/ JAYSHREE ULLAL President, Chief Executive Officer and Chairperson of the Board (Principal Executive Officer) February 18, 2025
+Added: /s/ JAYSHREE ULLAL Chief Executive Officer and Chairperson of the Board (Principal Executive Officer) February 13, 2026
Jayshree Ullal
−Removed: /s/ CHANTELLE BREITHAUPT Chief Financial Officer (Senior Vice President) February 18, 2025
+Added: /s/ CHANTELLE BREITHAUPT Senior Vice President, Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer) February 13, 2026
Chantelle Breithaupt
−Removed: /s/ KENNETH DUDA Chief Technology Officer, Senior Vice President, Director February 18, 2025
+Added: /s/ KENNETH DUDA President, Chief Technology Officer, Director February 13, 2026
/s/ KELLY BATTLES Director February 13, 2026
3 unchanged sentences
Charles Giancarlo
+Added: /s/ GREG LAVENDER Director February 13, 2026
+Added: Greg Lavender
/s/ DAN SCHEINMAN Director February 13, 2026
5 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.