Edgar Filing: POTBELLY CORP

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G/A

Under the Securities Exchange Act of 1934
(Amendment No.2)*

Potbelly Corporation
(Name of Issuer)

Common Stock Par Value $0.01
(Title of Class of Securities)

73754Y100
(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:

¨	Rule 13d-1(b)
¨	Rule 13d-1(c)
x	Rule 13d-1 (d)

(Page 1 of 16 Pages)

______________________________

*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).

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1	NAME OF REPORTING PERSON Oak Investment Partners IX, Limited Partnership 06-1556218
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 0 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0%
12	TYPE OF REPORTING PERSON PN

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1	NAME OF REPORTING PERSON Oak Associates IX, LLC 06-1556230
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 0 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0%
12	TYPE OF REPORTING PERSON OO-LLC

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1	NAME OF REPORTING PERSON Oak IX Affiliates Fund, Limited Partnership 06-1556229
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 0 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0%
12	TYPE OF REPORTING PERSON PN

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1	NAME OF REPORTING PERSON Oak IX Affiliates, LLC 06-1556233
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 0 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0%
12	TYPE OF REPORTING PERSON OO-LLC

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1	NAME OF REPORTING PERSON Oak IX Affiliates Fund - A, Limited Partnership 06-1571899
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 0 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0%
12	TYPE OF REPORTING PERSON PN

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1	NAME OF REPORTING PERSON Oak Management Corporation 06-0990851
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 0 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0%
12	TYPE OF REPORTING PERSON CO

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1	NAME OF REPORTING PERSON Bandel L. Carano
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 0 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0%
12	TYPE OF REPORTING PERSON IN

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1	NAME OF REPORTING PERSON Edward F. Glassmeyer
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 3,539 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 3,539 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,539 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.01%
12	TYPE OF REPORTING PERSON IN

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1	NAME OF REPORTING PERSON Fredric W. Harman
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 4,785 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 4,785 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,785 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.02%
12	TYPE OF REPORTING PERSON IN

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1	NAME OF REPORTING PERSON Ann H. Lamont
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) x
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 4,644 Shares of Common Stock
	6	SHARED VOTING POWER 0 Shares of Common Stock
	7	SOLE DISPOSITIVE POWER 4,644 Shares of Common Stock
	8	SHARED DISPOSITIVE POWER 0 Shares of Common Stock
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,644 Shares of Common Stock
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 0.02%
12	TYPE OF REPORTING PERSON IN

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Item 1(a).	NAME OF ISSUER
	Potbelly Corporation

Item 1(b).	ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES
	111 N. Canal Street, Suite 850
	Chicago, Illinois 60606

Item 2(a).	NAME OF PERSON FILING
	Oak Investment Partners IX Limited Partnership ("Oak IX")
	Oak Associates IX, LLC
	Oak IX Affiliates Fund, Limited Partnership ("Oak IX Affiliates")
	Oak IX Affiliates, LLC
	Oak IX Affiliates Fund – A, Limited Partnership ("Oak IX Affiliates – A")
	Oak Management Corporation ("Oak Management")
	Bandel L. Carano
	Edward F. Glassmeyer
	Frederic W. Harman
	Ann H. Lamont

Item 2(b).	ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE
	c/o Oak Management Corporation
	901 Main Avenue, Suite 600
	Norwalk, CT 06851

Item 2(c).	CITIZENSHIP
	Please refer to Item 4 on each cover sheet for each filing person.

Item 2(d).	TITLE OF CLASS OF SECURITIES
	Common Stock, par value $0.01 per share

Item 2(e).	CUSIP NUMBER
	73754Y100

Item 3.

IF THIS STATEMENT IS FILED PURSUANT TO Rules 13d-1(b), OR 13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A:

(a)	¨	Broker or dealer registered under Section 15 of the Act;
(b)	¨	Bank as defined in Section 3(a)(6) of the Act;
(c)	¨	Insurance company as defined in Section 3(a)(19) of the Act;
(d)	¨	Investment company registered under Section 8 of the Investment Company Act of 1940;
(e)	¨	An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

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(f)	¨	An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);
(g)	¨	A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);
(h)	¨	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act;
(i)	¨	A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act;
(j)	¨	A non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J);
(k)	¨	Group, in accordance with Rule 13d-1(b)(1)(ii)(K).

If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J), please specify the type of institution: _________________________________________

Item 4.	OWNERSHIP
	The information in Items 1 and 5 through 11 on the cover pages of this Schedule 13G is hereby incorporated by reference.

	Oak Associates IX, LLC is the general partner of Oak IX; and Oak IX Affiliates, LLC is the general partner of both Oak IX Affiliates and Oak IX Affiliates - A. Oak Management is the manager of each of Oak IX, Oak IX Affiliates, and Oak IX Affiliates - A. Bandel L. Carano, Edward F. Glassmeyer, Fredric W. Harman and Ann H. Lamont are the managing members of each of Oak Associates IX, LLC and Oak IX Affiliates, LLC, and, as such, may be deemed to have possessed shared beneficial ownership of the shares of common stock held by such entities.

	By making this filing, the Reporting Persons acknowledge that they may be deemed to constitute a “group” within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, in connection with the securities of the Issuer. Each Reporting Person disclaims the existence of a “group” and disclaims beneficial ownership of all shares of Common Stock or securities convertible into or exercisable for Common Stock other than any shares or other securities reported herein as being owned by it, him or her, as the case may be.

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 5 percent of the class of securities, check the following -[X].

Item 6.	OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
	Not applicable.

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Item 7.	IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON
	Not applicable.

Item 8.	IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
	Not applicable.

Item 9.	NOTICE OF DISSOLUTION OF GROUP
	Not applicable.

Item 10.

CERTIFICATION

By signing below, each of the undersigned certifies that, to the best of his or its individual knowledge and belief, the securities referred to above were (i) not acquired and held for the purpose, or with the effect, of changing or influencing the control of the issuer of the securities and (ii) not acquired and held in connection with, or as a participant in, any transaction having that purpose or effect.

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SIGNATURES

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

DATE: February 12, 2016

Entities: Oak Investment Partners IX, Limited Partnership Oak Associates IX, LLC Oak IX Affiliates Fund, Limited Partnership Oak IX Affiliates, LLC Oak IX Affiliates Fund – A, Limited Partnership Oak Management Corporation


/s/ Edward F. Glassmeyer
Name:	Edward F. Glassmeyer
Title:	General Partner or Managing Member or attorney-in-fact for the above-listed entities


Individuals: Bandel L. Carano Edward F. Glassmeyer Fredric W. Harman Ann H. Lamont


/s/ Edward F. Glassmeyer
Edward F. Glassmeyer, individually and as attorney-in-fact for the above-listed individuals

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INDEX TO EXHIBITS

EXHIBIT A - Joint Filing Agreement (previously filed)

EXHIBIT B - Power of Attorney (previously filed)