Wassenaar Yvonne 4
4 · Arista Networks, Inc. · Filed May 22, 2026
Research Summary
AI-generated summary of this filing
Arista (ANET) Director Yvonne Wassenaar Sells Shares
What Happened Yvonne Wassenaar, a director of Arista Networks, converted/vested 971 restricted stock units (RSUs) into 971 shares (no cash paid) on May 20, 2026 and sold all 971 shares in the open market the same day for a total of roughly $136,846. The sales were executed in multiple blocks at weighted average prices ranging roughly from $139.36 to $143.20. The sales were reported on a Form 4 filed May 22, 2026.
Key Details
- Transaction date: May 20, 2026 (reported May 22, 2026 — timely filing within the 2-business‑day rule).
- Activity: RSU conversion/exercise (Code M) of 971 shares at $0.00, followed by open-market sales (Code S) of 324, 329, 242 and 76 shares.
- Prices/values: weighted average sale prices for the separate sale blocks were reported as $139.89 ($45,325), $140.86 ($46,344), $141.89 ($34,338), and $142.62 ($10,839); total proceeds ≈ $136,846.
- Shares owned after transaction: not specified in the excerpt of the filing provided.
- Footnotes: sales were made pursuant to a Rule 10b5-1 trading plan adopted Nov 21, 2025 (F2). RSUs represent contingent rights to shares upon vesting (F1), and the RSUs were originally granted May 30, 2025 with quarterly vesting schedule (F7). Price ranges for each sale block are detailed in footnotes F3–F6.
Context
- This was not a cash exercise of stock options; the filing shows RSUs converting to shares (no purchase price) and those shares being sold the same day. That pattern is common when vested RSUs are sold to cover tax or for portfolio rebalancing.
- The sales were carried out under a pre-established 10b5-1 plan, which typically schedules trades in advance and can indicate routine disposition rather than ad-hoc trading.
Insider Transaction Report
Form 4
Wassenaar Yvonne
Director
Transactions
- Exercise/Conversion
Common Stock
[F1]2026-05-20+971→ 10,755 total - Sale
Common Stock
[F2][F3]2026-05-20$139.89/sh−324$45,325→ 10,431 total - Sale
Common Stock
[F2][F4]2026-05-20$140.86/sh−329$46,344→ 10,102 total - Sale
Common Stock
[F2][F5]2026-05-20$141.89/sh−242$34,338→ 9,860 total - Sale
Common Stock
[F2][F6]2026-05-20$142.62/sh−76$10,839→ 9,784 total - Exercise/Conversion
Restricted Stock Unit-4
[F1][F7]2026-05-20−971→ 0 totalExercise: $0.00→ Common Stock (971 underlying)
Footnotes (7)
- [F1]Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.
- [F2]The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.
- [F3]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $139.36 to $140.35, 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.
- [F4]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $140.36 to $141.35, 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 $141.36 to $142.35, 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 $142.37 to $143.20, 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 reporting person was granted RSUs on May 30, 2025. 1/4th of the shares vest on August 20, 2025 and will continue to vest at the same rate on each quarterly vest date thereafter. A quarterly vest date is the first market trading day on or after February 20, May 20, August 20, or November 20.
Signature
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Yvonne Wassenaar|2026-05-22