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  4. [Form 4] Arista Networks, Inc. Insider Trading Activity

Arista Networks, Inc. (ANET) CEO sells 767,029 shares under plan

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

A family trust for which Arista Networks, Inc. CEO and Chairperson Jayshree Ullal is co‑trustee reported sales of 767,029 shares of Arista Networks common stock on August 5, 2026, in multiple transactions. The sales were executed under a Rule 10b5‑1 trading plan adopted on November 14, 2025. One tranche included 369,569 shares at a weighted average price of $201.2927 per share. Following these transactions, Ullal directly holds 9,917 Arista Networks shares.

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Insider Ullal Jayshree
Role CEO and Chairperson
Sold 767,029 shs ($154.34M)
Type Security Shares Price Value
Sale Common Stock F1, F2, F3 152,860 $197.116 $30.13M
Sale Common Stock F1, F4, F3 27,292 $198.5433 $5.42M
Sale Common Stock F1, F5, F3 54,399 $199.5091 $10.85M
Sale Common Stock F1, F6, F3 17,132 $200.4263 $3.43M
Sale Common Stock F1, F7, F3 369,569 $201.2927 $74.39M
Sale Common Stock F1, F8, F3 2,428 $202.3871 $491K
Sale Common Stock F1, F9, F3 33,931 $203.5675 $6.91M
Sale Common Stock F1, F10, F3 28,776 $204.7292 $5.89M
Sale Common Stock F1, F11, F3 26,722 $205.6127 $5.49M
Sale Common Stock F1, F12, F3 1,601 $207.0532 $331K
Sale Common Stock F1, F13, F3 10,640 $207.871 $2.21M
Sale Common Stock F1, F3 1,023 $209.00 $214K
Sale Common Stock F1, F14, F3 35,337 $210.5985 $7.44M
Sale Common Stock F1, F15, F3 1,495 $211.734 $317K
Sale Common Stock F1, F16, F3 3,824 $212.6377 $813K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 16,387,981 shares (Indirect, by Trust); Common Stock — 9,917 shares (Direct)
Footnotes (16)
  1. F1. 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 14, 2025.
  2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.00 to $197.94, 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.
  3. F3. These shares are held by a family trust for which the reporting person is co-trustee.
  4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $198.00 to $198.995, 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.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.00 to $199.99, 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.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200.00 to $200.98, 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.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.00 to $201.97, 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.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.04 to $202.98, 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.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.04 to $204.03, 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.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $204.045 to $205.04, 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.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $205.08 to $205.91, 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.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $206.39 to $207.355, 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.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $207.495 to $208.30, 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.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $210.04 to $210.92, 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.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $211.21 to $211.95, 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.
  16. F16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $212.23 to $212.8875, 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.
Shares sold 767,029 shares Total Arista Networks common shares sold on August 5, 2026 by the family trust
Largest reported tranche 369,569 shares at $201.2927 per share One of the sale blocks executed on August 5, 2026
Direct holdings after sales 9,917 shares Common stock directly owned by Jayshree Ullal following the reported transactions
Number of sale transactions 15 Non-derivative sale entries for common stock reported for August 5, 2026
Rule 10b5-1 plan adoption date November 14, 2025 Date Jayshree Ullal adopted the trading plan governing these sales
Rule 10b5-1 trading plan regulatory
"The exercises and/or sales reported ... were made pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
family trust financial
"These shares are held by a family trust for which the reporting person is co-trustee."
co-trustee other
"These shares are held by a family trust for which the reporting person is co-trustee."

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Form 4 Insider Transactions: What Each Field Means →

FAQ

What insider transaction did Arista Networks (ANET) CEO Jayshree Ullal report?
A family trust for which she is co‑trustee sold 767,029 Arista Networks common shares on August 5, 2026 in multiple transactions. The sales involved non‑derivative common stock and were reported as market or private transactions by the associated family trust.

How many Arista Networks (ANET) shares were sold and at what prices?
The family trust sold a total of 767,029 shares of Arista Networks common stock. Reported weighted average prices for individual tranches included $197.1160, $201.2927 and up to $212.6377 per share, with underlying trades occurring within detailed price ranges noted in the footnotes.

Were the ANET insider sales made under a Rule 10b5-1 trading plan?
Yes. Footnote disclosure states the exercises and/or sales were made under a Rule 10b5‑1 trading plan adopted by Jayshree Ullal on November 14, 2025. This indicates the trades followed a pre‑arranged plan rather than being discretionary at the time of execution.

Were the ANET shares sold directly by Jayshree Ullal or through another entity?
All reported sales were made from shares held indirectly by a family trust for which Jayshree Ullal is co‑trustee. A footnote clarifies that the trust holds the shares, and the transactions are attributed to this family trust associated with Ullal.

How many Arista Networks (ANET) shares does Jayshree Ullal still hold directly?
After the reported sales, Jayshree Ullal directly owns 9,917 shares of Arista Networks common stock. This direct holding is reported separately from the larger position sold by the family trust and reflects her post‑transaction direct ownership on the Form 4 date.

How many separate sale transactions did the ANET Form 4 report?
The filing lists 15 separate non‑derivative sale entries for Arista Networks common stock on August 5, 2026. Each tranche specifies the number of shares sold and a weighted average sale price, with additional price‑range detail provided through individual transaction footnotes.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Ullal Jayshree
(Last)(First)(Middle)
5453 GREAT AMERICA PARKWAY
(Street)
SANTA CLARA CALIFORNIA 95054
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
Arista Networks, Inc. [ ANET ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
CEO and Chairperson
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/05/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock08/05/2026S(1)152,860D$197.116(2)17,002,150Iby Trust(3)
Common Stock08/05/2026S(1)27,292D$198.5433(4)16,974,858Iby Trust(3)
Common Stock08/05/2026S(1)54,399D$199.5091(5)16,920,459Iby Trust(3)
Common Stock08/05/2026S(1)17,132D$200.4263(6)16,903,327Iby Trust(3)
Common Stock08/05/2026S(1)369,569D$201.2927(7)16,533,758Iby Trust(3)
Common Stock08/05/2026S(1)2,428D$202.3871(8)16,531,330Iby Trust(3)
Common Stock08/05/2026S(1)33,931D$203.5675(9)16,497,399Iby Trust(3)
Common Stock08/05/2026S(1)28,776D$204.7292(10)16,468,623Iby Trust(3)
Common Stock08/05/2026S(1)26,722D$205.6127(11)16,441,901Iby Trust(3)
Common Stock08/05/2026S(1)1,601D$207.0532(12)16,440,300Iby Trust(3)
Common Stock08/05/2026S(1)10,640D$207.871(13)16,429,660Iby Trust(3)
Common Stock08/05/2026S(1)1,023D$20916,428,637Iby Trust(3)
Common Stock08/05/2026S(1)35,337D$210.5985(14)16,393,300Iby Trust(3)
Common Stock08/05/2026S(1)1,495D$211.734(15)16,391,805Iby Trust(3)
Common Stock08/05/2026S(1)3,824D$212.6377(16)16,387,981Iby Trust(3)
Common Stock9,917D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. 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 14, 2025.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.00 to $197.94, 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.
3. These shares are held by a family trust for which the reporting person is co-trustee.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $198.00 to $198.995, 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.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.00 to $199.99, 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.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200.00 to $200.98, 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.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.00 to $201.97, 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.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.04 to $202.98, 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.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.04 to $204.03, 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.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $204.045 to $205.04, 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.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $205.08 to $205.91, 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.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $206.39 to $207.355, 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.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $207.495 to $208.30, 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.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $210.04 to $210.92, 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.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $211.21 to $211.95, 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.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $212.23 to $212.8875, 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.
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Jayshree Ullal08/07/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR