ex41_formofspecimenstock

SEE REVERSE FOR CERTAIN DEFINITIONS CUSIP 29355A 10 7 THIS CERTIFIES THAT is the record holder of FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, $0.00001 PAR VALUE PER SHARE, OF ENPHASE ENERGY, INC. transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of the Certificate properly endorsed. This Certificate is not valid unless countersigned by the Transfer Agent and registered by the Registrar. WITNESS the facsimile signatures of the Corporation’s duly authorized officers. Dated: COMMON STOCK ENPHASE ENERGY, INC. NUMBER SHARES C O U N TE R S IG N E D A N D R E G IS TE R E D : E Q U IN ITI TR U S T C O M P A N Y , LLC TR A N S FE R A G E N T A N D R E G IS TR A R B Y A U TH O R IZ E D S IG N A TU R E INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE PRESIDENT AND CHIEF EXECUTIVE OFFICER SECRETARY

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 JT TEN – as joint tenants with right of survivorship Act ___________________________________ and not as tenants in common (State) COM PROP – as community property UNIF TRF MIN ACT – ______________ Custodian (until age _______) (Cust) ________________under Uniform Transfers (Minor) to Minors Act __________________________ (State) Additional abbreviations may also be used though not in the above list. For Value Received, ___________________ ______________ hereby sell(s), assign(s) and transfer(s) unto (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) shares of the common stock represented by the within Certificate, and do(es) 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 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 WHATSOEVER. Signature Guaranteed ____________________________________________ 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. KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, OR DESTROYED THE CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE. PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE