0000001 SPECIMEN SEE REVERSE FOR IMPORTANT NOTICE REGARDING OWNERSHIP AND TRANSFER RESTRICTIONS AND CERTAIN OTHER INFORMATION COMMON STOCK SEE REVERSE FOR CERTAIN DEFINITIONS FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, PAR VALUE $0.00001 PER SHARE, OF MIROMATRIX MEDICAL INC. CUSIP 60471P 10 8 INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE CHIEF FINANCIAL OFFICER CHIEF EXECUTIVE OFFICER transferable on the books of the Corporation by the holder hereof in person or by Attorney upon surrender of this certificate properly endorsed. This certificate is not valid until countersigned and registered by the Transfer Agent and Registrar. WITNESS the facsimile signatures of its duly authorized officers. DATED:

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