Potomac Capital Management SC 13D/A SIGMA DESIGNS / POTOMAC CAPITAL MANAGEMENT ownership change

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 1)1

Sigma Designs, Inc.

(Name of Issuer)

Common Stock, no par value

(Title of Class of Securities)

826565103

(CUSIP Number)

Paul J. Solit

POTOMAC CAPITAL MANAGEMENT LLC

825 Third Avenue, 33rd Floor

New York, New York 10022

With copies to:

STEVEN WOLOSKY, ESQ.

OLSHAN GRUNDMAN FROME ROSENZWEIG & WOLOSKY LLP

Park Avenue Tower

65 East 55th Street

New York, New York 10022

(212) 451-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

March 28, 2012

(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 that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ¨.

Note:  Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits.  See § 240.13d-7 for other parties to whom copies are to be sent.

_______________

1              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. 826565103

1	NAME OF REPORTING PERSON POTOMAC CAPITAL PARTNERS III, L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS WC, OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 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 1,379,170
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 1,379,170
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,379,170
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.3%
14	TYPE OF REPORTING PERSON PN

2

CUSIP NO. 826565103

1	NAME OF REPORTING PERSON POTOMAC CAPITAL MANAGEMENT III, L.L.C.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 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 1,379,170
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 1,379,170
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,379,170
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.3%
14	TYPE OF REPORTING PERSON OO

3

CUSIP NO. 826565103

1	NAME OF REPORTING PERSON POTOMAC CAPITAL PARTNERS L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS WC
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 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 444,973
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 444,973
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 444,973
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.4%
14	TYPE OF REPORTING PERSON PN

4

CUSIP NO. 826565103

1	NAME OF REPORTING PERSON POTOMAC CAPITAL MANAGEMENT, L.L.C.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 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 444,973
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 444,973
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 444,973
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.4%
14	TYPE OF REPORTING PERSON OO

5

CUSIP NO. 826565103

1	NAME OF REPORTING PERSON PAUL J. SOLIT
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 1,824,143
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 1,824,143
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,824,143
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7%
14	TYPE OF REPORTING PERSON IN

6

CUSIP NO. 826565103

1	NAME OF REPORTING PERSON ERIC SINGER
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF, PF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 45,000
	8	SHARED VOTING POWER 1,379,170
	9	SOLE DISPOSITIVE POWER 45,000
	10	SHARED DISPOSITIVE POWER 1,379,170
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,424,170
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.4%
14	TYPE OF REPORTING PERSON IN

7

CUSIP NO. 826565103

The following constitutes Amendment No. 1 to the Schedule 13D filed by the undersigned (“Amendment No. 1”).  This Amendment No. 1 amends the Schedule 13D as specifically set forth.

Item 3. Source and Amount of Funds or Other Consideration.

Item 3 is hereby amended and restated to read as follows:

The aggregate purchase price of the 1,379,170 Shares owned directly by PCP III is approximately $7,114,576, including brokerage commissions.  Of the 1,379,170 Shares owned directly by PCP III, 373,700 Shares were contributed by limited partners to PCP III pursuant to its limited partnership agreement and 1,005,470 Shares were acquired with its working capital.

The aggregate purchase price of the 444,973 Shares owned directly by PCP is approximately $2,526,298, including brokerage commissions.  The Shares owned directly by PCP were acquired with its working capital.

PCP III and PCP each effect purchases of securities primarily through margin accounts maintained for them with prime brokers, which may extend margin credit to them as and when required to open or carry positions in the margin accounts, subject to applicable federal margin regulations, stock exchange rules and the prime brokers’ credit policies.  In such instances, the positions held in the margin accounts are pledged as collateral security for the repayment of debit balances in the accounts.

The aggregate purchase price of the 45,000 Shares owned directly by Mr. Singer is approximately $248,975.  Such Shares were acquired with personal funds.

Item 4. Purpose of Transaction.

Item 4 is hereby amended to add the following:

The Reporting Persons have had, and intended to continue to engage in discussions with management and the Board of the Issuer seeking to reach an agreement with the Issuer relating to Board representation.  If these discussions do not result in a resolution prior to the deadline for shareholder submission of a notice of nomination of director nominees for election to the Board at the Issuer’s 2012 Annual Meeting of shareholders (including any other meeting of shareholders held in lieu thereof, and any adjournments, postponements, reschedulings or continuations thereof, the “Annual Meeting”) the Reporting Persons currently intend to timely submit such notice pursuant to the Issuer’s Amended and Restated By-Laws for Board representation.

Item 5. Interest in Securities of the Issuer.

Items 5(a) - (c) are hereby amended and restated to read as follows:

 (a)           The aggregate percentage of Shares reported owned by each Reporting Person is based upon 32,227,881 Shares outstanding, which is the total number of Shares outstanding as of November 30, 2011, as reported in the Issuer’s Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on December 8, 2011.

As of the close of business on March 28, 2012, PCP III beneficially owned 1,379,170 Shares, constituting approximately 4.3% of the Shares outstanding.  By virtue of their relationships with PCP III discussed in further detail in Item 2, each of Potomac Management III and Messrs. Solit and Singer may be deemed to beneficially own the Shares beneficially owned by PCP III.

8

CUSIP NO. 826565103

As of the close of business on March 28, 2012, PCP beneficially owned 444,973 Shares, constituting approximately 1.4% of the Shares outstanding.  By virtue of their relationships with PCP discussed in further detail in Item 2, each of Potomac Management and Mr. Solit may be deemed to beneficially own the Shares beneficially owned by PCP.

As of the close of business on March 28, 2012, Mr. Singer directly owned 45,000 Shares, constituting less than 1% of the Shares outstanding.

Each of the Reporting Persons, as a member of a “group” with the other Reporting Persons for purposes of Rule 13d-5(b)(1) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), may be deemed to beneficially own the Shares owned by the other Reporting Persons.  The filing of this Schedule 13D shall not be deemed an admission that the Reporting Persons are, for purposes of Section 13(d) of the Exchange Act, the beneficial owners of any Shares he or it does not directly own.  Each of the Reporting Persons specifically disclaims beneficial ownership of the securities reported herein that are not directly owned by such Reporting Person, except to the extent of their pecuniary interest therein.

(b)           PCP III, Potomac Management III and Messrs. Solit and Singer share the power to vote and dispose of the Shares beneficially owned by PCP III.  PCP, Potomac Management and Mr. Solit share the power to vote and dispose of the Shares beneficially owned by PCP.  Mr. Singer has the sole power to vote and dispose of the Shares directly owned by Mr. Singer.

(c)           Schedule A annexed hereto lists all transactions in the Shares by the Reporting Persons since the filing of the Schedule 13D.  All of such transactions were effected in the open market.

9

CUSIP NO. 826565103

SIGNATURES

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

Dated: March 28, 2012	POTOMAC CAPITAL PARTNERS III, L.P.
	By:	Potomac Capital Management III, L.L.C.
		General Partner
	By:	/s/ Paul J. Solit
	Name:	Paul J. Solit
	Title:	Co-Managing Member

POTOMAC CAPITAL MANAGEMENT III, L.L.C.
By:	/s/ Paul J. Solit
Name:	Paul J. Solit
Title:	Co-Managing Member

POTOMAC CAPITAL PARTNERS L.P.
By:	Potomac Capital Management, L.L.C.
	General Partner
By:	/s/ Paul J. Solit
Name:	Paul J. Solit
Title:	Managing Member

POTOMAC CAPITAL MANAGEMENT, L.L.C.
By:	/s/ Paul J. Solit
Name:	Paul J. Solit
Title:	Managing Member

/s/ Paul J. Solit

PAUL J. SOLIT

/s/ Eric Singer

ERIC SINGER

10

CUSIP NO. 826565103

SCHEDULE A

Transactions in the Shares Since the Filing of the Schedule 13D

Shares of Common Stock Purchased Price Per Share($) Date of Purchase

POTOMAC CAPITAL PARTNERS III, L.P.

39,306	5.4311	03/14/2012
20,000	5.5846	03/21/2012

POTOMAC CAPITAL MANAGEMENT III, L.L.C.

None

POTOMAC CAPITAL PARTNERS L.P.

29,694	5.4311	03/14/2012
14,000	5.5036	03/16/2012

POTOMAC CAPITAL MANAGEMENT, L.L.C.

None

PAUL J. SOLIT

None

ERIC SINGER

100	5.4400	03/15/2012
100	5.4410	03/15/2012
100	5.4425	03/15/2012
1,700	5.4450	03/15/2012
1,900	5.4500	03/15/2012
18,400	5.4550	03/15/2012
600	5.4850	03/15/2012
300	5.5000	03/15/2012
200	5.5000	03/15/2012
500	5.4750	03/15/2012
100	5.4800	03/15/2012
200	5.4600	03/15/2012
800	5.4400	03/15/2012
2,900	5.6300	03/19/2012
7,100	5.6400	03/19/2012
10,000	5.6200	03/19/2012