EX-4.1



 Exhibit 4.1 
  






 
 ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS# 
COMMON STOCK 
PAR VALUE $0.0001 
Certificate Number 
ZQ00000000 
ARISTA 
COMMON STOCK 
THIS CERTIFICATE IS TRANSFERABLE IN CANTON, MA, JERSEY CITY, NJ AND 
COLLEGE STATION, TX

Shares 
** 000000 ****************** 
*** 000000 ***************** 
**** 000000 **************** 
***** 000000 *************** 
****** 000000 ************** 
THIS CERTIFIES THAT 
is the owner of 
ARISTA NETWORKS, INC. 
INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE 
** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample ****

Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample ****

Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample ****

Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr Alexander David Sample **** Mr. Alexander David Sample ****

Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample ****

Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample ****

Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample ****

Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample ****

Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** 
Mr. Alexander David Sample **** Mr. Sample **** Mr. Sample**** Mr. Sample **** Mr. Sample****

**000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000**Shares****000000**Shares*** *000000**Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares**** 000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000**Shares****000000**Shares****000000**

Shares****000000**Shares****000000**Shares****000000**Shares****000000**

Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**

Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000** Shares****000000**Shares****000000**Shares****0000
00**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**

Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares

****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** 
Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000 
**Shares****000000** Shares****000000**Shares****000000**Shares****000000**S 
MR. SAMPLE &
MRS. SAMPLE & MR. SAMPLE & MRS. SAMPLE 
***ZERO HUNDRED THOUSAND ZERO HUNDRED AND ZERO*** 
CUSIP 040413 10 6 
SEE REVERSE FOR CERTAIN DEFINITIONS 
FULLY-PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF 
Arista Networks, Inc. (hereinafter
called the “Company”), transferable on the books of the Company in person or by duly authorized attorney, upon surrender of this Certificate properly endorsed. This Certificate and the shares represented hereby, are issued and shall be
held subject to all of the provisions of the Certificate of Incorporation, as amended, and the By-Laws, as amended, of the Company (copies of which are on file with the Company and with the Transfer Agent), to all of which each holder, by acceptance
hereof, assents. This Certificate is not valid unless countersigned and registered by the Transfer Agent and Registrar. 
Witness the facsimile seal of the Company
and the facsimile signatures of its duly authorized officers. 
President and Chief Executive Officer 
Secretary 
ARISTA NETWORKS, INC. 
SEAL 
2011

DELAWARE 
DATED DD-MMM-YYYY 
COUNTERSIGNED AND REGISTERED: 
COMPUTERSHARE TRUST COMPANY, N.A. 
TRANSFER AGENT AND REGISTRAR, 
By 
AUTHORIZED SIGNATURE 
1234567 
ARISTA 
PO BOX 43004, Providence, RI 02940-3004 
MR A SAMPLE 
DESIGNATION (IF ANY) 
ADD 1 
ADD 2 
ADD 3 
ADD 4 
CUSIP XXXXXX XX X 
Holder ID XXXXXXXXXX 
Insurance Value 1,000,000.00 
Number of Shares 123456 
DTC 12345678 123456789012345 
Certificate Numbers Num/No. Denom. Total 
1234567890/1234567890 1 1 1 
1234567890/1234567890 2 2 2 
1234567890/1234567890 3 3 3 
1234567890/1234567890 4 4 4 
1234567890/1234567890 5 5 5 
1234567890/1234567890 6 6 6 
Total Transaction 7 







 



 
 . 
ARISTA NETWORKS, INC. 
ARISTA NETWORKS, INC. WILL FURNISH WITHOUT CHARGE TO EACH SHAREHOLDER WHO SO REQUESTS, A SUMMARY OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR
OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OF ARISTA NETWORKS, INC. AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND RIGHTS, AND THE VARIATIONS IN RIGHTS, PREFERENCES AND LIMITATIONS DETERMINED FOR EACH SERIES, WHICH ARE
FIXED BY THE CERTIFICATE OF INCORPORATION OF ARISTA NETWORKS, INC., AS AMENDED, AND THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF ARISTA NETWORKS, INC., AND THE AUTHORITY OF THE BOARD OF DIRECTORS TO DETERMINE VARIATIONS FOR FUTURE SERIES. SUCH
REQUEST MAY BE MADE TO THE OFFICE OF THE SECRETARY OF ARISTA NETWORKS, INC. OR TO THE TRANSFER AGENT. THE BOARD OF DIRECTORS MAY REQUIRE THE OWNER OF A LOST OR DESTROYED STOCK CERTIFICATE, OR HIS LEGAL REPRESENTATIVES, TO GIVE ARISTA NETWORKS, INC.
A BOND TO INDEMNIFY IT AND ITS TRANSFER AGENTS AND REGISTRARS AGAINST ANY CLAIM THAT MAY BE MADE AGAINST THEM ON ACCOUNT OF THE ALLEGED LOSS OR DESTRUCTION OF ANY SUCH CERTIFICATE. 
The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws
or regulations: 
TEN COM 
TEN ENT 
JT TEN 
- as tenants in common 
- as tenants by the entireties 
- as joint tenants with right of survivorship 
and not as tenants in common 
UNIF GIFT MIN ACT 
under Uniform Gifts to Minors Act 
(State) 
UNIF TRF MIN ACT 
(Cust) under Uniform Transfers to Minors Act - 
(Cust) 
-

(Minor) 
Custodian 
(Minor) 
Custodian (until age) 
(State) 
Additional abbreviations may also be used though not in the above list. 
PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE 
For value received,
hereby sell, assign and transfer unto 
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE, OF ASSIGNEE) 
Shares of the common stock represented by the within Certificate, and do hereby irrevocably constitute and appoint Attorney to transfer the said stock on the books of the
within-named Company with full power of substitution in the premises. 
Dated: 20

Signature: 
Signature: Notice: The signature to this assignment must
correspond with the name as written upon the face of the certificate, in every particular, without alteration or enlargement, or any change whatever. 
Signature(s)
Guaranteed: Medallion Guarantee Stamp 
THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (Banks, Stockbrokers, Savings and Loan
Associations and Credit Unions) WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15. 
The IRS requires that we
report the cost basis of certain shares acquired after January 1, 2011. If your shares were covered by the legislation and you have sold or transferred the shares and requested a specific cost basis calculation method, we have processed as
requested. If you did not specify a cost basis calculation method, we have defaulted to the first in, first out (FIFO) method. Please visit our website or consult your tax advisor if you need additional information about cost basis. 
If you do not keep in contact with us or do not have any activity in your account for the time periods specified by state law, your property could become subject to state unclaimed
property laws and transferred to the appropriate state. 
1234567 
SECURITY
INSTRUCTIONS 
THIS IS WATERMARKED PAPER, DO NOT ACCEPT WITHOUT NOTING WATERMARK. HOLD TO LIGHT TO VERIFY WATERMARK.