Document:

Exhibit 4.1

 

	 	 	 
	
                            NUMBER

         

        U-                     
	 	UNITS                       

 

	
        SEE REVERSE FOR

        CERTAIN DEFINITIONS
	FORUM MERGER CORPORATION	 

 

CUSIP 34985B 202 

 

 

UNITS CONSISTING OF ONE SHARE OF CLASS A COMMON
STOCK, ONE RIGHT TO RECEIVE 

ONE-TENTH OF ONE SHARE OF CLASS A COMMON STOCK, AND ONE HALF OF ONE WARRANT 

EACH WHOLE WARRANT TO PURCHASE ONE SHARE OF CLASS
A COMMON STOCK

 

	THIS CERTIFIES THAT	 	 

 

	is the owner of	 	Units.

 

Each Unit (“Unit”) consists of one (1) share of Class A
common stock, par value $0.0001 per share (“Common Stock”), of Forum Merger Corporation, a Delaware
corporation (the “Company”), one right to receive one-tenth of one share of Common Stock (the
“Right”) and one half (1/2) of one warrant (the “Warrant(s)”). Each whole
Warrant entitles the holder to purchase one (1) share of Common Stock for $11.50 per share (subject to adjustment). Each
Warrant will become exercisable on the later of (i) 30 days after the Company’s completion of a merger, share exchange,
asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination
(“Business Combination”) and (ii) twelve (12) months from the closing of the Company’s
initial public offering (“IPO”), and will expire unless exercised before 5:00 p.m., New York City
Time, on the fifth anniversary of the completion of an initial Business Combination, or earlier upon redemption (the
“Expiration Date”). The Common Stock, Rights and Warrants comprising the Units represented by this
certificate are not transferable separately prior to the 90th day after the date of the prospectus relating to the
Company’s IPO, subject to earlier separation in the discretion of EarlyBirdCapital, Inc., provided that the Company has
filed with the Securities and Exchange Commission a Current Report on Form 8-K which includes an audited balance sheet
reflecting the Company’s receipt of the gross proceeds of the IPO and issued a press release announcing when separate
trading will begin. The terms of the Rights are governed by a Rights Agreement, dated as of                   , 2017, between Continental Stock
Transfer & Trust Company (“Continental”), as Rights Agent, and are subject to the terms and
provisions contained therein, all of which terms and provisions the holder of this certificates consents to by acceptance
hereof. The terms of the Warrants are governed by a Warrant Agreement, dated as of
                    ,
2017, between the Company and Continental, as Warrant Agent, and are subject to the terms and provisions contained therein,
all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies of the Rights
Agreement and Warrant Agreement are on file at the office of the Warrant Agent at 17 Battery Place, New York, New York 10004,
and are available to any Warrant holder on written request and without cost.

 

This certificate is not valid unless countersigned
by the Transfer Agent and Registrar of the Company.

 

Witness the facsimile seal of the Company and the
facsimile signatures of its duly authorized officers.

 

	By		 	 
	 	Chairman of the Board	 	Secretary

 

    	 		 

     

    

 

Forum Merger Corporation

 

The Company will furnish without charge to each stockholder
who so requests, a statement of the powers, designations, preferences and relative, participating, optional or other special rights
of each class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences
and/or rights.

 

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	under Uniform Gifts to Minors	 	 
	 	 	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)
	 
	 

 

	 	 	 Units

represented
by the within Certificate, and do hereby irrevocably constitute and appoint

 

	 	 	 Attorney to transfer

the said Units on the books of the within
named Company will 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 whatever.

 

Signature(s)
Guaranteed:  

	 	 	 	 	 
	THE
    SIGNATURE(S) SHOULD 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 S.E.C. RULE 17Ad-15).	 	 

 

The holder(s) of this certificate shall be entitled to receive a pro-rata
portion of the funds from the trust account with respect to the common stock underlying this certificate only in the event that
(i) the Corporation is forced to liquidate because it does not consummate an initial business combination within the period of
time set forth in the Corporation’s Amended and Restated Certificate of Incorporation, as the same may be amended from time
to time (the “Charter”) or (ii) if the holder seeks to convert his shares upon consummation of, or sell his shares
in a tender offer in connection with, an initial business combination or in connection with certain amendments to the Charter.
In no other circumstances shall the holder(s) have any right or interest of any kind in or to the trust account.Exhibit
4.2

 

	            NUMBER	 	SHARES                    

 

            C    

 

FORUM
MERGER CORPORATION

INCORPORATED
UNDER THE LAWS OF THE STATE OF DELAWARE

CLASS
A COMMON STOCK 

 

SEE
REVERSE FOR

CERTAIN
DEFINITIONS

 

	This
    Certifies that	 	CUSIP
    34985B 103
	is
    the owner of	 	 

 

FULLY
PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $0.0001 EACH

OF THE CLASS ACOMMON STOCK OF

 

FORUM
MERGER CORPORATION 

 

transferable
on the books of the Corporation in person or by duly authorized attorney upon surrender of this certificate properly endorsed.
The Corporation will be forced to liquidate if it is unable to complete an initial business combination within the period of time
as set forth in the Corporation’s Amended and Restated Certificate of Incorporation, as the same may be amended from time
to time, all as more fully described in the Corporation’s final prospectus dated                     ,
2017

 

This
certificate is not valid unless countersigned by the Transfer Agent and registered by the Registrar. 

 

Witness
the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. 

 

	Dated:	 	 	 	 
		 	 	 	
	CHAIRMAN	 	[INSERT
    SEAL HERE]	 	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	 	 
	TEN ENT	-
    	as
    tenants by the entireties  	 	 	(Cust)	 	(Minor)	 
	JT
    TEN	-
    	as
    joint tenants with right of survivorship	under Uniform Gifts to Minors	 	 
	 	 	and
not as tenants in common
	Act	 	 	 	 	 
	 	 	 	 	               (State)		 	 	 

 

Additional
abbreviations may also be used though not in the above list.

 

     

     

    

 

Forum
Merger Corporation 

 

The
Corporation will furnish without charge to each stockholder who so requests the powers, designations, preferences and relative,
participating, optional or other special rights of each class of stock or series thereof of the Corporation and the qualifications,
limitations, or restrictions of such preferences and/or rights. This certificate and the shares represented thereby are issued
and shall be held subject to all the provisions of the Certificate of Incorporation and all amendments thereto and resolutions
of the Board of Directors providing for the issue of shares of Preferred Stock (copies of which may be obtained from the secretary
of the Corporation), to all of which the holder of this certificate by acceptance hereof assents.

 

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 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 will 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 whatever.

 

Signature(s)
Guaranteed:      

 

		 
	THE
    SIGNATURE(S) SHOULD 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 S.E.C. RULE 17Ad-15).	 

 

The
holder(s) of this certificate shall be entitled to receive a pro-rata portion of the funds from the trust account only in the
event that (i) the Corporation is forced to liquidate because it does not consummate an initial business combination within the
period of time set forth in the Corporation’s Amended and Restated Certificate of Incorporation, as the same may be amended
from time to time (the “Charter”) or (ii) if the holder seeks to convert his shares upon consummation of, or sell
his shares in a tender offer in connection with, an initial business combination or in connection with certain amendments to the
Charter. In no other circumstances shall the holder(s) have any right or interest of any kind in or to the trust account.

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