Sirtris Pharmaceuticals, Inc. Common Stock Certificate

Summary

This document certifies ownership of shares of common stock in Sirtris Pharmaceuticals, Inc., a Delaware corporation. The certificate represents fully paid and non-assessable shares, which can be transferred by the holder or an authorized agent upon proper endorsement and surrender. The shares are subject to the company's certificate of incorporation and by-laws. The certificate must be countersigned by the transfer agent and registered by the registrar to be valid. If lost or destroyed, a replacement may require a bond. Additional information about share rights is available from the company upon request.

EX-4.1 6 a2177193zex-4_1.htm EXHIBIT 4.1
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Exhibit 4.1

COMMON STOCK

Number				Shares
SIRTRIS PHARMACEUTICALS, INC.
INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
				CUSIP 82968A 105 SEE REVERSE SIDE FOR CERTAIN DEFINITIONS

THIS CERTIFIES THAT

IS THE OWNER OF

FULLY-PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, PAR VALUE OF $0.001 PER SHARE OF SIRTRIS PHARMACEUTICALS, INC. transferable on the books of the Company by the holder hereof, in person, or by duly authorized attorney upon surrender of this Certificate properly endorsed. The shares represented by this Certificate are subject to the provisions of the certificate of incorporation and by-laws of the Company as from time to time amended or restated. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar.

Witness the facsimile signatures of its duly authorized officers.

CHAIRMAN OR VICE CHAIRMAN OR PRESIDENT OR VICE PRESIDENT		SECRETARY OR ASSISTANT SECRETARY OR TREASURER OR ASSISTANT TREASURER
Countersigned and Registered:
COMPUTERSHARE TRUST COMPANY, N.A.

By:
		Transfer Agent and Registrar Authorized Signature

SIRTRIS PHARMACEUTICALS, INC.

THE RECORD HOLDER OF THIS CERTIFICATE MAY OBTAIN FROM THE SECRETARY OF THE COMPANY, UPON REQUEST AND WITHOUT CHARGE, A FULL STATEMENT OF THE DESIGNATION, RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF THE SHARES OF EACH CLASS AUTHORIZED TO BE ISSUED AND THE DESIGNATION, RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF EACH SERIES OF PREFERRED SHARES AUTHORIZED TO BE ISSUED SO FAR AS THE SAME HAVE BEEN FIXED AND THE AUTHORITY OF THE BOARD OF DIRECTORS TO DESIGNATE AND FIX THE RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF OTHER SERIES.

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 TEN ENT — as tenants by the entireties		UNIF GIFT MIN ACT —
JT TEN — as joint tenants with right of survivorship and not as tenants in common				(Custodian)	Custodian	(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 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	X

	X

		NOTICE: THE SIGNATURE ON THIS ASSIGNMENT MUST CORRESPOND EXACTLY WITH THE NAME WRITTEN UPON THE FACE OF THE CERTIFICATE.
Signature(s) Guaranteed:
THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION, AS DEFINED IN RULE 17AD-15 UNDER THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED

KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, OR DESTROYED, THE COMPANY MAY REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE.

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