Exhibit








Exhibit 4.1

THIS CERTIFIES THAT  is the owner of CUSIP DATED  COUNTERSIGNED AND REGISTERED:  COMPUTERSHARE TRUST COMPANY, N.A.  TRANSFER AGENT AND REGISTRAR,  FULLY-PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF Quantenna Communications, Inc. (hereinafter called the “Company”), transferable on the books of the Company in person or by duly authorized attorney, upon surrender of this Certificate properly endorsed. This Certificate and the shares represented hereby, are issued and shall be held subject to all of the provisions of the Certificate of Incorporation, as amended, and the Bylaws, as amended, of the Company (copies of which are on file with the Company and with the Transfer Agent), to all of which each holder, by acceptance hereof, assents. This Certificate is not valid unless countersigned and registered by the Transfer Agent and Registrar. Witness the facsimile seal of the Company and the facsimile signatures of its duly authorized officers. COMMON STOCK  PAR VALUE $0.0001  COMMON STOCK  SEE REVERSE FOR CERTAIN DEFINITIONS Certificate  Number  Shares . QUANTENNA COMMUNICATIONS, INC. INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE Chief Executive Officer General Counsel By AUTHORIZED SIGNATURE November 28, 2005 DELAWARE QUANTENNA COMMUNICATIONS, INC.   THIS CERTIFICATE IS TRANSFERABLE  IN CANTON, MA, JERSEY CITY, NJ AND  COLLEGE STATION, TX  ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS# 74766D 10 0   DD-MMM-YYYY   * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * * * *   * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * * * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * * *   * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * * *   * * * * * * 0 0 0 0 0 0 * * * * * * * * * * * * * *   ** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample   **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander   David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.   Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr. Sample **** Mr. Sample **000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares*** *000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares**** 000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****0 00000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****00 0000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000 000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****0000 00**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****00000 0**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000 **Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000* *Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000** Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**Shares****000000**S ***ZERO HUNDRED THOUSAND ZERO HUNDRED AND ZERO*** MR. SAMPLE & MRS. SAMPLE & MR. SAMPLE & MRS. SAMPLE ZQ00000000 Certificate  Numbers 1234567890/123456789 0 1234567890/123456789 0 1234567890/123456789  0 1234567890/123456789  0 1234567890/123456789 0 1234567890/123456789 0 Total  Transaction Num/No . 123456 Denom . 123456 Total 1234567 MR  A SAMPLE DESIGNATION (IF ANY ) ADD  1 ADD  2 ADD  3 ADD  4 PO BOX 43004, Providence, RI 02940-3004 CUSI P XXXXXX  XX  X Holder  ID XXXXXXXXX X Insurance  Value  1,000,000.0 0 Number  of  Shares 12345 6 DT C 12345678  12345678901234 5 












	
					
	 






QUANTENNA COMMUNICATIONS, INC.
THE COMPANY WILL FURNISH WITHOUT CHARGE TO EACH SHAREHOLDER WHO SO REQUESTS, A SUMMARY OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OF THE COMPANY AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND RIGHTS, AND THE VARIATIONS IN RIGHTS, PREFERENCES AND LIMITATIONS DETERMINED FOR EACH SERIES, WHICH ARE FIXED BY THE CERTIFICATE OF INCORPORATION OF THE COMPANY, AS AMENDED, AND THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF THE COMPANY, AND THE AUTHORITY OF THE BOARD OF DIRECTORS TO DETERMINE VARIATIONS FOR FUTURE SERIES. SUCH REQUEST MAY BE MADE TO THE OFFICE OF THE SECRETARY OF THE COMPANY OR TO THE TRANSFER AGENT. THE BOARD OF DIRECTORS MAY REQUIRE THE OWNER OF A LOST OR DESTROYED STOCK CERTIFICATE, OR HIS LEGAL REPRESENTATIVES, TO GIVE THE COMPANY A BOND TO INDEMNIFY IT AND ITS TRANSFER AGENTS AND REGISTRARS AGAINST ANY CLAIM THAT MAY BE MADE AGAINST THEM ON ACCOUNT OF THE ALLEGED LOSS OR DESTRUCTION OF ANY SUCH CERTIFICATE.
	
								
	 
	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 Act
	 
	 

	 
	 
	 
	 
	 
	 
	(State)
	 

	 
	JT TEN - as joint tenants with right of survivorship
	 
	UNIF TRF MIN ACT -
	 
	Custodian (until age
	 
	)

	 
	and not as tenants in common
	 
	 
	(Cust)
	 
	 
	 

	 
	 
	 
	 
	 
	under Uniform Transfers to Minors Act
	 
	 

	 
	 
	 
	                                                                                      
	(Minor)
	 
	(State)
	 

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




	
		
	 
	PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE

	For value received,                                                          hereby sell, assign and transfer unto
	 




	
	
	 

	(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE, OF ASSIGNEE)

	 




	
		
	 
	Shares

	of the common 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 Company with full power of substitution in the premises.


	 




	
							
	Dated:
	 
	20
	 
	Signature(s) Guaranteed: Medallion Guarantee Stamp
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.

	 
	 
	 
	 
	 
	 

	Signature:
	 

	 
	 
	 
	 
	 
	 

	Signature:
	 

	 
	 
	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.







	
			
	 
	The IRS requires that the named transfer agent (“we”) report the cost basis of certain shares or units acquired after January 1, 2011. If your shares or units are covered by the legislation, and you requested to sell or transfer the shares or units using a specific cost basis calculation method, then we have processed as you requested.  If you did not specify a cost basis calculation method, then we have defaulted to the first in, first out (FIFO) method. Please consult your tax advisor if you need additional information about cost basis.
If you do not keep in contact with the issuer or do not have any activity in your account for the time period specified by state law, your property may become subject to state unclaimed property laws and transferred to the appropriate state.