Exhibit 4.1

016570| 003590|127C|RESTRICTED||4|057-423

COMMON STOCK

NO PAR VALUE

COMMON STOCK

THIS CERTIFICATE IS TRANSFERABLE IN CANTON, MA AND NEW YORK, NY

Certificate Number

ZQ 000000

THIS CERTIFIES THAT

KRATON PERFORMANCE POLYMERS, INC.

INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

Shares

* * 6 0 0 6 2 0 * * * * * *

* * * 6 0 0 6 2 0 * * * * *

* * * * 6 0 0 6 2 0 * * * *

* * * * * 6 0 0 6 2 0 * * *

* * * * * * 6 0 0 6 2 0 * *

** 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. **** Mr. Alexander SAMPLE David Sample **** Mr. Alexander David &Sample MRS. **** Mr. Alexander David SAMPLE 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 MR. David Sample SAMPLE **** Mr. Alexander David Sample & **** Mr. Alexander MRS. David Sample **** 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

is the owner of

CUSIP XXXXXX XX X

SEE REVERSE FOR CERTAIN DEFINITIONS

FULLY-PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK OF

Witness the facsimile seal of the Company and the facsimile signatures of its duly authorized officers.

FACSIMILE SIGNATURE TO COME

President

DATED <<Month Day, Year>>

COUNTERSIGNED AND REGISTERED:

COMPUTERSHARE TRUST COMPANY, N.A.

TRANSFER AGENT AND REGISTRAR,

FACSIMILE SIGNATURE TO COME

By AUTHORIZED SIGNATURE

Secretary

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 00.1,000,000 Number of Shares 123456

DTC 12345678901234512345678

Certificate Numbers Num/No Denom. Total.

1234567890/1234567890 111 1234567890/1234567890 222 1234567890/1234567890 333 1234567890/1234567890 444 1234567890/1234567890 555 1234567890/1234567890 666

Total Transaction 7

KRATON PERFORMANCE POLYMERS, INC.

THE COMPANY 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 THE COMPANY 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 ARTICLES OF INCORPORATION OF THE COMPANY, AS AMENDED, AND THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF THE COMPANY, 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 COMPANY 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 THE COMPANY 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 - as tenants in common UNIF GIFT MIN ACT - Custodian

(Cust) (Minor)

TEN ENT - as tenants by the entireties under Uniform Gifts to Minors Act

(State)

JT TEN - as joint tenants with right of survivorship UNIF TRF MIN ACT - Custodian (until age )

(Cust)

under Uniform Transfers to Minors Act

(Minor) (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

to transfer the said stock on the books of the within-named Corporation 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.

THE SIGNATURE(S) Signature(s) SHOULD BE Guaranteed: GUARANTEED BY Medallion AN ELIGIBLE Guarantee GUARANTOR Stamp INSTITUTION (Banks, Stockbrokers, SIGNATURE GUARANTEE Savings and Loan MEDALLION Associations PROGRAM, and Credit PURSUANT Unions) WITH TO S. E. MEMBERSHIP C. RULE 17Ad-15. IN AN APPROVED

Attorney

1234567

SECURITY INSTRUCTION

THIS IS THE WATERMARKED PAPER DO NOT ACCEPT WITHOUT NOTING WATERMARK HOLD TO LIGHT TO VARIFY WATERMARK