Form of Common Stock Certificate of the Registrant

Exhibit 4.1

NUMBER Cortigent, Inc. SHARES ***** ***** INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE CUSIP 22059C107 $0.001 PAR VALUE COMMON STOCK COMMON STOCK THIS CERTIFIES THAT * SPECIMEN * Is The Owner of ***** FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF Cortigent, Inc. Transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of this Certificate properly endorsed. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. Dated: ***** COUNTERSIGNED AND REGISTERED: VSTOCK TRANSFER, LLC Transfer Agent and Registrar By: AUTHORIZED SIGNATURE Chief Accounting Officer

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 UN1F GIFT MIN ACT Custodian TEN ENT - as tenants by the entireties (Cust) (Minor) JT TEN - as joint tenants with the right of Act survivorship and not as tenants (State) in common Additional abbreviations may also be used though not in the above list. For value received, hereby self, 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 capital 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 THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THIS CERTIFICATE. THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (Banks, Stockbrokers, Savings and Loan Associations and Credit Unions). SIGNATURE GUARANTEED: TRANSFER FEE WILL APPLY