EXHIBIT 4.1

NUMBER SHARES SPECIMEN C O M M O N S T O C K Apellis phArmAceuticAls, inc.
INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE SEE REVERSE FOR CERTAIN DEFINITIONS
CUSIP 03753U 10 6 this Certifies that: SPECIMEN - NOT NEGOTIABLE
is the owner of FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF THE PAR VALUE OF $0.0001 PER SHARE OF AMERICAN COUNTERSIGNED BROOKLYN, Apellis phArmAceuticAls, inc.NY AND STOCK
transferable on the books of the Corporation by the holder hereof in person or by duly authorized Attorney, upon surrender of this Certificate properly endorsed. This certificate and the shares represented hereby are subject to the laws of the State of Delaware, and to the Certificate of BY: Incorporation and Bylaws of the Corporation, as now or hereafter amended. TRANSFER REGISTERED:
& This certificate is not valid until countersigned and registered by the Transfer Agent and Registrar. WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. TRUST
DateD: TRANSFER COMPANY,
AGENT LLC AUTHORIZED AND
SPECIMEN
NOT NEGOTIABLE
SIGNATURE REGISTRAR
TREASURER    PRESIDENT

THE CORPORATION WILL FURNISH TO ANY STOCKHOLDER, UPON REQUEST AND WITHOUT CHARGE, A FULL STATEMENT OF THE DESIGNATIONS, RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF THE SHARES OF EACH CLASS AND SERIES AUTHORIZED TO BE ISSUED, SO FAR AS THE SAME HAVE BEEN DETERMINED, AND OF THE AUTHORITY, IF ANY, OF THE BOARD TO DIVIDE THE SHARES INTO CLASSES OR SERIES AND TO DETERMINE AND CHANGE THE RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF ANY CLASS OR SERIES. SUCH REQUEST MAY BE MADE TO THE SECRETARY OF THE CORPORATION OR TO THE TRANSFER AGENT NAMED ON THIS 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 TEN ENT - as tenants by the entireties                (Cust)                (Minor) JT TEN    - as joint tenants with right of                under Uniform Gifts to Minors    survivorship and not as                tenants in common                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 Corporation with full power of substitution in the premises.
Dated                
NOTICE: THE SIGNATURE(S) TO THISASSIGNMENT MUST CORRESPOND WITH THE NAME(S)AS WRITTEN UPON THE FACE                OF THE CERTIFICATE, IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER.
Signature(s) Guaranteed
By                
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 SEC Rule 17Ad-15.
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