Arista Networks, Inc. SEC Filings

Jayshree Ullal, CEO and Chair of Arista Networks (ANET), reported multiple sales of company common stock on 09/10/2025. The filings show a series of dispositions executed under a Rule 10b5-1 trading plan adopted December 13, 2024, with weighted-average prices disclosed in ranges from $145.00 up to $150.65 per share. The report lists multiple blocks sold for trusts established for the reporting person’s children, for family trusts where she is co-trustee, and for trusts for a nephew and niece. Holdings following the reported transactions are shown for each trust, including totals such as 19,247,010 shares held by one family trust and smaller trusts holding 30,000 shares each for a nephew and niece. The form was signed by an attorney-in-fact on behalf of Ms. Ullal.

Jayshree Ullal, CEO and Chairperson of Arista Networks (ANET), reported multiple sales of Arista common stock on 09/08/2025 executed under pre-established Rule 10b5-1 trading plans. The Form 4 shows discrete dispositions tied to trusts for family members and family trusts for which Ms. Ullal is trustee or co-trustee. Reported weighted-average prices for the sales ranged from $143.00 to $144.10 per share; the filing notes sales occurred in multiple transactions within those price ranges. After the reported transactions, the filing lists various beneficial ownership totals by trust, including positions of 5,556,153; 5,555,373; and 20,154,457 shares, and additional smaller trust holdings. The report was submitted by an attorney-in-fact on behalf of Ms. Ullal.

Arista Networks (ANET) director and President/CTO Kenneth Duda reported multiple transfers of common stock on Form 4 dated 09/08/2025. The filing shows contributions of 75,000 shares to a grantor retained annuity trust (GRAT) for Mr. Duda and 75,000 shares to a GRAT for his spouse, recorded as acquisitions (code J) with no cash price. An aggregate of 150,000 shares was contributed to those GRATs.

The form also reports a disposition of 150,000 shares (code J) and various indirect beneficial ownership positions: 762,035 shares held via GRATs, 1,207,168 shares held by a children’s trust, 572,400 shares held by a 501(c) foundation, and 12,976 shares listed as disposed. The explanations identify roles: Mr. Duda and his spouse serve as trustees or co-trustees for several of these holdings.

Jayshree Ullal, CEO, Chairperson and director of Arista Networks (ANET), reported multiple sales of Arista common stock on 09/05/2025 pursuant to a Rule 10b5-1 trading plan adopted December 13, 2024. The Form 4 lists several block sales executed at weighted-average prices in three ranges: $143.00–$143.9966, $144.00–$144.9998 and $145.00–$145.3851. Specific reported dispositions include lots of 33,010; 24,122; 3,413; 173,204; 126,563; and 17,907 shares, among others, with post-transaction beneficial ownership figures shown for related trusts (examples: 5,590,711; 5,566,589; 20,335,778; 20,209,215). Many shares are held in trusts for the reporting person’s children, relatives or family trusts where Ullal serves as trustee or co-trustee and disclaims beneficial ownership. The filing was signed by an attorney-in-fact on behalf of Ullal on 09/09/2025.

Arista Networks, Inc. announced a leadership change and bylaw updates. The board appointed founder and long-time Chief Technology Officer Kenneth Duda as President and Chief Technology Officer, effective immediately, expanding his responsibilities to oversee cloud and AI systems engineering and business development. The company states there are no family relationships or reportable related-party transactions involving Mr. Duda and that no new agreements or arrangements were entered into in connection with his appointment.

Arista also amended and restated its bylaws to allow the role of President to be held by more than one individual and to update its forum selection provision in line with recent changes to Delaware law, specifying Delaware courts or the federal District of Delaware as the exclusive forum for certain corporate disputes. Separately, Arista appointed Tyson Lamoreaux as Senior Vice President of Cloud and AI Networking, reporting to the Chief Development Officer as part of the expansion of Mr. Duda’s cloud and AI mandate.

Arista Networks (ANET) filed a Form 144 notifying a proposed sale of common stock. The filing shows 240,521 shares expected to be sold through J.P. Morgan Securities LLC on 09/05/2025, with an aggregate market value of $34,666,292 and 1,256,865,381 shares outstanding. The shares were acquired by stock option exercise on 01/01/2013 and payment is recorded as NA. The filing lists numerous sales by related trusts and individuals during the past three months, with multiple transactions and gross proceeds reported. The filer certifies no undisclosed material adverse information.

Arista Networks (ANET) Form 144 notice: The filer intends to sell 240,521 shares of common stock with an aggregate market value of $34,666,292. The reported number of shares outstanding is 1,256,865,381 and the approximate sale date is 09/05/2025 on the NYSE. The shares to be sold were acquired on 01/01/2013 through a stock option exercise, with payment recorded on the same date. The filing lists numerous prior sales by related trusts, family members, and Jayshree Ullal over the past three months, each showing sale dates, amounts sold, and gross proceeds.

Form 144 filed for Arista Networks (ANET) reporting a proposed sale of securities by persons related to the issuer. The filing names J.P. Morgan Securities LLC as the broker and lists 1,261,958 shares of common stock to be sold with an aggregate market value of $181,886,007. The company’s total shares outstanding is reported as 1,256,865,381, and the approximate sale date is 09/05/2025 on the NYSE. The securities proposed for sale were acquired principally through a stock option exercise on 01/01/2013 (1,015,014 shares) and restricted stock units on 02/21/2017 (246,944 shares). The filing also discloses numerous related-party sales during the past three months by trusts and individuals at 5453 Great America Parkway, Santa Clara, CA, with transaction dates and gross proceeds itemized in the notice.

Arista Networks director and CTO Kenneth Duda reported multiple non‑derivative transactions on Form 4 dated 08/29/2025, disclosing transfers among related trusts and entities. The filing shows 125,930 shares were acquired into a family trust aggregation (125,930 A) and multiple dispositions of 62,965 and 12,976 share line items, with a total beneficial ownership reported as 687,035 shares via a family trust and additional holdings: 1,207,168 shares by a children’s trust and 572,400 shares held by a 501(c) foundation.

The explanations state these transfers originated from GRATs (grantor retained annuity trusts) of the reporting person and spouse, with the reporting person or spouse acting as trustees or co‑trustees. Transactions are reported at $0.0 price, indicating transfers rather than open‑market purchases or sales. The form is signed by an attorney‑in‑fact on behalf of Mr. Duda.