Wayfair (W) SC 13G/A Wayfair Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. 1)

Wayfair Inc.

(Name of Issuer)

Class A Common Stock

(Title of Class of Securities)

94419L101

(CUSIP Number)

December 31, 2015

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

o Rule 13d-1(b)

o Rule 13d-1(c)

x Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons Great Hill Investors, LLC
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization Massachusetts
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 19,471
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 19,471
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 19,471
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 Less than 1.0%
	12	Type of Reporting Person OO

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CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons Great Hill Equity Partners IV, LP
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 7,139,176
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 7,139,176
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 7,139,176
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 15.6%
	12	Type of Reporting Person PN

2

CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons Great Hill Partners GP IV, L.P.
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 7,139,176
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 7,139,176
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 7,139,176
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 15.6%
	12	Type of Reporting Person PN

3

CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons GHP IV, LLC
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 7,139,176
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 7,139,176
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 7,139,176
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 15.6%
	12	Type of Reporting Person OO

4

CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons Christopher S. Gaffney
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 7,158,647
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 7,158,647
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 7,158,647
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 15.6%
	12	Type of Reporting Person IN

5

CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons John G. Hayes
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 7,158,647
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 7,158,647
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 7,158,647
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 15.6%
	12	Type of Reporting Person IN

6

CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons Michael A. Kumin
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 7,158,647
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 7,158,647
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 7,158,647
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 15.6%
	12	Type of Reporting Person IN

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CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons Mark D. Taber
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 7,158,647
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 7,158,647
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 7,158,647
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 15.6%
	12	Type of Reporting Person IN

8

CUSIP No. 94419L101						Schedule 13G
	1	Names of Reporting Persons Matthew T. Vettel
	2	Check the Appropriate Box if a Member of a Group
		(a)		o
		(b)		x
	3	SEC Use Only
	4	Citizen or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			5		Sole Voting Power 0
			6		Shared Voting Power 7,158,647
			7		Sole Dispositive Power 0
			8		Shared Dispositive Power 7,158,647
	9	Aggregate Amount Beneficially Owned by Each Reporting Person 7,158,647
	10	Check if the Aggregate Amount in Row (9) Excludes Certain Shares  o Not Applicable
	11	Percent of Class Represented by Amount in Row 9 15.6%
	12	Type of Reporting Person IN

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CUSIP No. 94419L101				Schedule 13G
Item 1.	(a)	Name of Issuer: Wayfair Inc.  (the “Issuer”)
	(b)	Address of Issuer’s Principal Executive Offices: 4 Copley Place, 7th Floor Boston, MA 02116
Item 2.	(a)	Name of Person Filing: Great Hill Investors, LLC (“GHI”) Great Hill Equity Partners IV, L.P. (“GHEP IV”) Great Hill Partners GP IV, L.P. (“GHEPIVGP”) GHP IV, LLC (“GHPIV”) Christopher S. Gaffney (“Gaffney”) John G. Hayes (“Hayes”) Michael A. Kumin (“Kumin”) Mark D. Taber (“Taber”) Matthew T. Vettel (“Vettel”)
	(b)	Address or Principal Business Office: The business address of each of reporting person is c/o Great Hill Partners, LP; One Liberty Square; Boston, MA 02109.
	(c)	Citizenship of each Reporting Person is:
		GHI GHEP IV GHEPIVGP GHPIV Gaffney Hayes Kumin Taber Vettel	Massachusetts limited liability company Delaware limited partnership Delaware limited partnership Delaware limited liability company U.S. citizen U.S. citizen U.S. citizen U.S. citizen U.S. citizen
	(d)	Title of Class of Securities: Class A Common Stock, $0.001 par value per share, of Wayfair Inc.
	(e)	CUSIP Number: 94419L101

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CUSIP No. 94419L101				Schedule 13G
Item 3.
	Not applicable.
Item 4.	Ownership
	(a)	Amount beneficially owned:    As of December 31, 2015, GHI owned 19,471 shares of Class A Common Stock. GHI is controlled by Gaffney, Hayes, Kumin, Taber and Vettel and, as such, they may be deemed to indirectly beneficially own the shares beneficially owned by GHI. Each of Messrs. Gaffney, Hayes, Kumin, Taber and Vettel disclaims beneficial ownership of these shares. As of December 31, 2015, GHEP IV owned 7,139,176 shares of Class A Common Stock. GHEPIVGP is the sole general partner of GHEPIV and GHPIV is the sole general partner of GHEPIVGP. GHPIV is controlled by Gaffney, Hayes, Kumin, Taber and Vettel and, as such, they may be deemed to indirectly beneficially own the shares beneficially owned by GHEP IV. Each of Messrs. Gaffney, Hayes, Kumin, Taber and Vettel disclaims beneficial ownership of these shares.
	(b)	Percent of class:
		GHI GHEP IV GHEPIVGP GHPIV Gaffney Hayes Kumin Taber Vettel	Less than 1.0% 15.6% 15.6% 15.6% 15.6% 15.6% 15.6% 15.6% 15.6%
		The ownership percentages above are based on an aggregate of 45,814,237 shares of Class A Common Stock outstanding as of December 31, 2015.

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CUSIP No. 94419L101				Schedule 13G
	(c)	Number of shares as to which such person has:
					Number of Shares
		Reporting Person			(i)	(ii)	(iii)	(iv)
		GHI			0	19,471	0	19,471
		GHEP IV			0	7,139,176	0	7,139,176
		GHEPIVGP			0	7,139,176	0	7,139,176
		GHPIV			0	7,139,176	0	7,139,176
		Gaffney			0	7,158,647	0	7,158,647
		Hayes			0	7,158,647	0	7,158,647
		Kumin			0	7,158,647	0	7,158,647
		Taber			0	7,158,647	0	7,158,647
		Vettel			0	7,158,647	0	7,158,647
		(i)	Sole power to vote or to direct the vote
		(ii)	Shared power to vote or to direct the vote
		(iii)	Sole power to dispose or to direct the disposition of
		(iv)	Shared power to dispose or to direct the disposition of
Item 5.	Ownership of Five Percent or Less of a Class
	If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: o
Item 6.	Ownership of More than Five Percent on Behalf of Another Person
	Not applicable.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company
	Not applicable.
Item 8.	Identification and Classification of Members of the Group
	Not applicable.
Item 9.	Notice of Dissolution of Group
	Not applicable.

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CUSIP No. 94419L101		Schedule 13G
Item 10.	Certification
	Not applicable.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date:      February 9, 2016

GREAT HILL INVESTORS, LLC
By:	/s/ Laurie T. Gerber
Title: Attorney-in-fact
GREAT HILL EQUITY PARTNERS IV, L.P.
By: GREAT HILL PARTNERS GP IV, L.P., its General Partner
By: GHP IV, LLC, its General Partner
By:	/s/ Laurie T. Gerber
Title: Attorney-in-fact
GREAT HILL PARTNERS GP IV, L.P.
By: GHP IV, LLC, its General Partner
By:	/s/ Laurie T. Gerber
Title: Attorney-in-fact
GHP IV, LLC
By:	/s/ Laurie T. Gerber
Title: Attorney-in-fact
/s/ Laurie T. Gerber, as attorney-in-fact for Christopher S. Gaffney
Name: Christopher S. Gaffney
/s/ Laurie T. Gerber, as attorney-in-fact for John G. Hayes
Name: John G. Hayes
/s/ Laurie T. Gerber, as attorney-in-fact for Michael A. Kumin
Name: Michael A. Kumin
/s/ Laurie T. Gerber, as attorney-in-fact for Mark D. Taber
Name: Mark D. Taber
/s/ Laurie T. Gerber, as attorney-in-fact for Matthew T. Vettel
Name: Matthew T. Vettel

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CUSIP No. 94419L101 Schedule 13G

LIST OF EXHIBITS

Exhibit No.	Description
I	Joint Filing Agreement

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