Amended Statement of Beneficial Ownership (sc 13d/a)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D
(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a)

(Amendment No. 6)*

ServiceSource International, Inc.
(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

81763U100

(CUSIP Number)

Rishi Bajaj

Managing Principal

Altai Capital Management, L.P.

520 Newport Center Drive – 12 ^th Floor

Newport Beach, CA 92660

949-326-9612

With a copy to:

Marc Weingarten

Schulte Roth & Zabel LLP

919 Third Avenue

New York, New York 10022
212-756-2000

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

November 3, 2017

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box [ o ].

Page 1 of 7

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

*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 disclosures provided in a prior cover page.

The information required on 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. 81763U100

SCHEDULE 13 D

Page 2 of 7 Pages

1	NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Altai Capital Management, L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*		(a) ¨ (b) x
3	SEC USE ONLY
4	SOURCE OF FUNDS* AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 5,012,057
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 5,012,057
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 5,012,057
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES			¨
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.62%
14	TYPE OF REPORTING PERSON IA, PN

CUSIP No. 81763U100

SCHEDULE 13 D

Page 3 of 7 Pages

1	NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Altai Capital Management, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*		(a) ¨ (b) x
3	SEC USE ONLY
4	SOURCE OF FUNDS* AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 5,012,057
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 5,012,057
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 5,012,057
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES			¨
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.62%
14	TYPE OF REPORTING PERSON HC, OO

CUSIP No. 81763U100

SCHEDULE 13 D

Page 4 of 7 Pages

1	NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Rishi Bajaj
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*		(a) ¨ (b) x
3	SEC USE ONLY
4	SOURCE OF FUNDS* AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION United States of America
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 5,012,057
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 5,012,057
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 5,012,057
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES			¨
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.62%
14	TYPE OF REPORTING PERSON HC, IN

CUSIP No. 81763U100

SCHEDULE 13 D

Page 5 of 7 Pages

Pursuant to Rule 13d-2(a) of the General Rules and Regulations under the Act, the undersigned hereby amend the Schedule 13D originally filed on June 27, 2014, as amended by Amendment No. 1 to the Schedule 13D filed on September 5, 2014, as amended by Amendment No. 2 to the Schedule 13D filed on November 17, 2014, as amended by Amendment No. 3 to the Schedule 13D filed on June 2, 2016, as amended by Amendment No. 4 to the Schedule 13D filed on September 19, 2017 and as amended by Amendment No. 5 to the Schedule 13D filed on October 4, 2017, (“ Amendment No. 5 ” and, as so amended, the “ Schedule 13D ”), relating to the common stock, par value $0.0001 per share (the “ Common Stock ”), of ServiceSource International, Inc., a Delaware corporation (the “ Company ” or the “ Issuer ”). Capitalized terms used herein and not otherwise defined in this Amendment No. 6 have the meanings set forth in the Schedule 13D. This Amendment No. 6 amends Items 2 and 5 as set forth below.

Item 2.	IDENTITY AND BACKGROUND

	Item 2(b) of the Schedule 13D is hereby amended and restated as follows:

	(b) The address of the business office of each of the Reporting Persons is 520 Newport Center Drive, 12th Floor, Newport Beach, California 92660.

Item 5.	INTEREST IN SECURITIES OF THE ISSUER

	Item 5 (a) - (b) of the Schedule 13D is hereby amended and restated as follows:

	(a) – (b) The responses of the Reporting Persons to Rows (7) through (13) of the cover pages of this Schedule 13D are incorporated herein by reference. As of the date hereof, the Reporting Persons beneficially own an aggregate 5,012,057 shares of Common Stock, which Common Stock may be deemed to be beneficially owned by each of the Investment Manager, IMGP and Mr. Bajaj, and which represent approximately 5.62% of the Issuer’s currently outstanding Common Stock. All percentages set forth herein are based upon a total of 89,189,275 shares of Common Stock outstanding as of July 31, 2017, as reported in the Issuer’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2017, filed with the Securities and Exchange Commission on August 7, 2017. For purposes of disclosing the number of shares of Common Stock beneficially owned by each of the Reporting Persons, Investment Manager, IMGP and Mr. Bajaj may be deemed to own beneficially (as that term is defined in Rule 13d-3 under the Securities Exchange Act of 1934) all shares of Common Stock that are owned beneficially and directly by the Reporting Persons. Each of Investment Manager, IMGP and Mr. Bajaj disclaims beneficial ownership of such shares of Common Stock for all other purposes.

CUSIP No. 81763U100

SCHEDULE 13 D

Page 6 of 7 Pages

SIGNATURES

After reasonable inquiry and to the best of its knowledge and belief, the undersigned each certifies that the information set forth in this statement is true, complete and correct.

Dated: November 7, 2017

	ALTAI CAPITAL MANAGEMENT, L.P.

	By:	/s/ Rishi Bajaj
		Name: Rishi Bajaj
		Title: Authorized Signatory


	ALTAI CAPITAL MANAGEMENT, LLC

	By:	/s/ Rishi Bajaj
		Name: Rishi Bajaj
		Title: Authorized Signatory


		/s/ Rishi Bajaj
		Name: Rishi Bajaj

CUSIP No. 81763U100

SCHEDULE 13 D

Page 7 of 7 Pages

SCHEDULE 1

Transactions of the Reporting Persons Effected

Since the Filing of Amendment No. 5

The following table sets forth all transactions in the Common Stock effected by each of the Reporting Persons since the filing of Amendment No. 5:

Investment Manager

Date	Security	Amount of Shares Bought (Sold)	Approximate Price per Share (excluding commissions)
10/09/2017	Common Stock	(800,000)	3.5002
11/03/2017	Common Stock	(500,000)	3.5000