ANET Form 4: Charles Giancarlo Executes 10b5-1 Sales at $143.75–$149.71
Rhea-AI Filing Summary
Arista Networks director Charles Giancarlo reported multiple sales of Arista common stock under a Rule 10b5-1 trading plan on 10/01/2025. The filings show repeated disposals at weighted-average prices ranging from about $143.75 up to $149.71 across several blocks; footnotes provide the specific price ranges for each block. The sales were executed pursuant to a 10b5-1 plan entered on June 12, 2025, and the shares sold are held in a family trust for which Mr. Giancarlo is a co-trustee. Following the reported transactions the amount of Arista common stock beneficially owned as shown in the form decreases through successive lines to 41,784 shares. The form is signed by an attorney-in-fact on behalf of Mr. Giancarlo on 10/03/2025.
Positive
- Sales executed under a Rule 10b5-1 plan, indicating prearranged trading (entered June 12, 2025)
- Full disclosure of weighted-average price ranges and willingness to provide per-price details on request
Negative
- Director disposed of multiple blocks of Arista stock on 10/01/2025, reducing beneficial ownership to 41,784 shares
- Large aggregate disposals reported (multiple weighted-average price ranges up to $149.71)
Insights
Insider sold multiple blocks under a prearranged 10b5-1 plan; holdings declined to 41,784 shares.
The Form 4 discloses that Director Charles Giancarlo executed several disposals on 10/01/2025 under a Rule 10b5-1 plan established on June 12, 2025. The filing provides weighted-average price ranges for each block sold, demonstrating the trades were carried out over multiple transactions.
This matters because 10b5-1 plans indicate preplanned sales rather than opportunistic trading; the filing also confirms the shares are held in a family trust where Mr. Giancarlo is a co-trustee, clarifying the nature of indirect ownership. The form is executed by an attorney-in-fact on 10/03/2025.
Insider Trade Summary
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock | 1,200 | $144.3372 | $173K |
| Sale | Common Stock | 800 | $145.3216 | $116K |
| Sale | Common Stock | 800 | $146.1913 | $117K |
| Sale | Common Stock | 700 | $147.2257 | $103K |
| Sale | Common Stock | 2,350 | $148.6826 | $349K |
| Sale | Common Stock | 2,150 | $149.3084 | $321K |
| holding | Common Stock | -- | -- | -- |
Footnotes (1)
- This sale was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 12, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $143.75 to $144.69, 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. These shares are held by a family trust for which the reporting person is co-trustee. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $144.79 to $145.70, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $145.81 to $146.76, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $146.88 to $147.71, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $147.98 to $148.92, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $148.98 to $149.71, 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.
