NUMBER His ertifies hat FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF THE PAR VALUE OF $0.001 PER SHARE OF SHARES Castor MaritiMe inC. transferable on the books of the Company in person or by duly authorized attorney upon surrender of this certificate properly endorsed This certificate is not valid unless countersigned by the Transfer Agent and registered by the Registrar. Witness the facsimile seal of the Company and the facsimile signatures of its duly authorized officers. DateD: AUTHORIZED SIGNATURE COUNTERSIGNED AND REGISTERED: AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC BROOKLYN, NY TRANSFER AGENT AND REGISTRAR PRESIDENT AND CHIEF EXECUTIVE 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	UNIF GIFT MIN ACT -	....................Custodian....................
TEN ENT	- as tenants by the entireties		(Cust)	(Minor)
JT TEN	- as joint tenants with right of survivorship and not as tenants in common		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 Corporation with full power of substitution in the premises.

Dated


	NOTICE: THE SIGNATURE(S) TO THIS ASSIGNMENT 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.