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Kenneth Duda, CTO and SVP Software Engineering and a director of Arista Networks (ANET), reported routine equity activity on Form 4. On 08/20/2025 several restricted stock units vested, resulting in acquisitions of 5,712, 3,884, 4,148 and 1,832 shares (each recorded as acquired at $0.0 per share because they represent vested RSUs). On the same date the filing shows 7,818 shares were disposed of at $132.78 per share to satisfy tax withholding obligations related to the vesting. The report also lists various indirect holdings by trusts and a foundation for which Mr. Duda serves as co-trustee or trustee, including holdings described as held in a child’s trust, a 501(c) foundation, and two GRAT/annuity trusts. The form was signed by an attorney-in-fact on behalf of Mr. Duda on 08/22/2025.

Chantelle Y. Breithaupt, Senior Vice President and CFO of Arista Networks (ANET), reported insider transactions on Form 4. On 08/20/2025 she was credited with 10,920 restricted stock units (RSUs) that vested (reported as acquisition code M) and each RSU represents a contingent right to one share. To satisfy tax withholding on the vesting, 5,455 shares were withheld/disposed at $132.78. Following these transactions she directly beneficially owned 41,936 shares of common stock, and held derivative interests equating to 109,176 underlying shares from RSUs.

Yvonne Wassenaar, a director of Arista Networks (ANET), reported the vesting and acquisition of restricted stock units. The filing shows she was granted RSUs on May 30, 2025, with 1/4 of the award vesting on August 20, 2025. On that date 971 shares were issued to satisfy vested RSUs at a reported price of $0.0, and she now beneficially owns 12,447 shares of Arista common stock. The filing also reports 2,913 RSUs (contingent rights to receive shares on future vesting) retained after the transaction. The RSU award continues to vest quarterly on the first trading day on or after Feb 20, May 20, Aug 20, and Nov 20.

Arista Networks director Mark B. Templeton received 971 restricted stock units (RSUs) that vested on 08/20/2025, each convertible into one share of common stock. After the reported transaction he beneficially owns 54,959 shares directly and an additional 75,200 shares indirectly held in a trust for which his spouse is trustee. The report also shows 2,913 RSUs remaining beneficially owned following the transaction. The RSUs were granted on 05/30/2025 with 25% vesting on 08/20/2025 and subsequent quarterly vesting on each quarter's vest date.

Arista Networks director Daniel Scheinman received 971 restricted stock units that vested on 08/20/2025, converting into 971 shares of common stock. The RSUs were originally granted on 05/30/2025 with 1/4 of the award vesting on 08/20/2025 and the remainder vesting quarterly thereafter on the first trading day on or after Feb 20, May 20, Aug 20, and Nov 20. After this transaction the reporting person beneficially owns 155,279 shares of Arista common stock. The Form 4 reports the ordinary vesting of equity compensation by a director and shows a direct ownership form.

Robert G. Lavender, a director of Arista Networks, reported an insider transaction filed on Form 4 showing restricted stock units (RSUs) vesting and resulting share ownership changes. On 08/20/2025 Lavender was credited with 808 shares of Common Stock (transaction code M) related to RSU vesting, recorded with a $0.0 price per share as these were granted equity awards. After the transaction, the report shows Lavender beneficially owns 1,647 shares of Common Stock as direct holdings in the non-derivative table and 2,422 shares equivalent in the derivative table reflecting underlying RSUs.

The RSUs were originally granted on 03/14/2025, with one quarter vesting on 08/20/2025 and the remainder scheduled to vest quarterly thereafter on the first trading day on or after Feb 20, May 20, Aug 20, and Nov 20. The form was signed by an attorney-in-fact on behalf of Lavender on 08/22/2025. The filing includes a note that reported share totals are rounded and the actual holdings include a fractional share.

Charles Giancarlo, a director of Arista Networks (ANET), reported the vesting and receipt of restricted stock units and his resulting holdings. On 08/20/2025 he was credited with 971 shares from vested restricted stock units (reported as acquisition code M at $0.0 per share). After the transaction he beneficially owns 220,607 shares directly. He also reports indirect holdings of 50,000 shares in a Charitable Remainder Trust and 57,784 shares in a family trust, for which he is co-trustee. The filing notes the RSUs were granted on 05/30/2025 with 1/4th vesting on 08/20/2025 and subsequent quarterly vest dates.

Lewis Chew, a director of Arista Networks (ANET), had 971 restricted stock units vest on 08/20/2025, resulting in the acquisition of 971 shares of common stock at no cash price. Following the reported transaction, Mr. Chew beneficially owns 28,319 shares of common stock and 2,913 derivative securities (restricted stock units) as reflected on the form. The RSUs were granted on 05/30/2025 with 1/4 of the grant vesting on 08/20/2025 and subsequent quarterly vesting on the first trading day on or after Feb 20, May 20, Aug 20, and Nov 20.

Kelly Battles, a director of Arista Networks, Inc. (ANET), reported a change in beneficial ownership on Form 4 showing transactions dated 08/20/2025. The filing discloses the acquisition of 971 shares by vesting of restricted stock units (RSUs) at a reported price of $0.0. The non-derivative section reports 8,431 shares beneficially owned following the reported transaction. The derivative section shows 2,913 derivative securities beneficially owned after the transaction. The RSUs were granted May 30, 2025, with one-quarter vesting on August 20, 2025 and continuing quarterly vesting.