Endurance International Group Holdings, Inc. Common Stock Certificate

Exhibit 4.1

ENDURANCE International Group

COMMON STOCK COMMON STOCK

FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, $0.0001 PAR VALUE PER SHARE, OF

ENDURANCE INTERNATIONAL GROUP HOLDINGS, INC.

PRESIDENT TREASURER

COUNTERSIGNED AND REGISTERED:

AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC

(Brooklyn, NY)

TRANSFER AGENT AND REGISTRAR

BY

AUTHORIZED SIGNATURE

INCORPORATED UNDER THE LAWS

OF THE STATE OF DELAWARE

SEE REVERSE FOR CERTAIN DEFINITIONS

CUSIP 29272B 10 5

EIG

(hereinafter called the “Corporation”), transferable on the books of the Corporation in person or by duly authorized attorney, upon surrender of the 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

and the By-laws of the Corporation, each as amended and/or restated from time to time (copies of which are on file with the Corporation and with the Transfer

Agent), to all of which each holder, by acceptance hereof, assents. This Certificate shall not be valid until countersigned and registered by the Transfer Agent and

Registrar.

WITNESS the facsimile signatures of the Corporation’s duly authorized officers.

Dated:

ENDURANCE INTERNATIONAL GROUP HOLDINGS, INC.

THE CORPORATION HAS MORE THAN ONE CLASS OF STOCK AUTHORIZED TO BE ISSUED. THE CORPORATION WILL FURNISH WITHOUT CHARGE TO EACH SHAREHOLDER WHO SO REQUESTS IN WRITING, A COPY OF THE FULL TEXT OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OF THE CORPORATION 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 THE CORPORATION, AS AMENDED AND/OR RESTATED, AND THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF THE CORPORATION, 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 THE CORPORATION OR TO THE TRANSFER AGENT. THE CORPORATION MAY REQUIRE THE OWNER OF A LOST OR DESTROYED STOCK CERTIFICATE, OR HIS LEGAL REPRESENTATIVES, TO GIVE THE CORPORATION 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– Custodian

(Cust) (Minor)

under Uniform Gifts to Minors

Act

(State)

Additional abbreviations may also be used though not in the above list.

FOR VALUE RECEIVED, hereby sell, assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER

IDENTIFYING NUMBER OF ASSIGNEE

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING 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 Corporation with full power of substitution in the premises.

Dated

X

X

NOTICE: THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY

CHANGE WHATEVER.

Signature(s) Guaranteed

THE SIGNATURE(S) MUST 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.