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. 2)1

Datawatch Corporation

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

237917208

(CUSIP Number)

Jack Ripsteen

Potrero Capital Research, LLC

Two Embarcadero, Suite 420

San Francisco, CA 94111

(415) 576-1103

Steve Wolosky

Olshan Frome Wolosky LLP

1325 Avenue of the Americas

New York, NY 10019

(212) 451-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

April 21, 2016

(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 x.

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. 237917208

1	NAME OF REPORTING PERSON Potrero Capital Research Partners, LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) x
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 California, USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 258,809
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 258,809
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 258,809
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.2%
14	TYPE OF REPORTING PERSON PN

2

CUSIP NO. 237917208

1	NAME OF REPORTING PERSON Potrero Capital Research Partners II, LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) x
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, USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 391,182
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 391,182
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 391,182
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.3%
14	TYPE OF REPORTING PERSON PN

3

CUSIP NO. 237917208

1	NAME OF REPORTING PERSON Potrero Capital Research, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) x
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, USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 0
	8	SHARED VOTING POWER 649,991
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 649,991
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 649,991
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.5%
14	TYPE OF REPORTING PERSON IA, OO

4

CUSIP NO. 237917208

1	NAME OF REPORTING PERSON Jack Ripsteen
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) x
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 649,991
	9	SOLE DISPOSITIVE POWER 0
	10	SHARED DISPOSITIVE POWER 649,991
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 649,991
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.5%
14	TYPE OF REPORTING PERSON IN, HC

5

CUSIP NO. 237917208

The following constitutes Amendment No. 2 to the Schedule 13D filed by the undersigned (“Amendment No. 2”).  This Amendment No. 2 amends the Schedule 13D as specifically set forth herein.

Item 4. Purpose of Transaction.

Item 4 is hereby amended to add the following:

On April 21, 2016, Potrero and certain of its affiliates (the “Potrero Group”) entered into a Cooperation Agreement (the “Cooperation Agreement”) with the Issuer. Pursuant to the Cooperation Agreement, the Issuer agreed to appoint Charles Gillman to the Board of Directors (the “Board”), effective immediately. Upon his appointment to the Board, Mr. Gillman will join the Corporate Governance and Nominating Committee and the Compensation and Stock Committee. Mr. Gillman is filling a vacancy created by the resignation of Dr. Terry Potter.

Pursuant to the Cooperation Agreement, the Potrero Group is subject to certain standstill restrictions during the period from the date of the Cooperation Agreement until the day that is thirty (30) days prior to the deadline established pursuant to the Issuer’s Bylaws for the submission of stockholder nominations for directors at the 2017 annual meeting of stockholders (the “Standstill Period”). During the Standstill Period, the Potrero Group is subject to customary standstill and voting obligations. The Potrero Group has agreed to vote its Shares in accordance with the Board’s recommendation during the Standstill Period; however, the Potrero Group is entitled to vote a “Mirror Amount” (as defined in the Cooperation Agreement) of Shares contrary to the Board’s recommendation as described in the Cooperation Agreement.

The foregoing description of the Cooperation Agreement is qualified in its entirety by reference to the Cooperation Agreement, which is attached as Exhibit 99.1 hereto and is incorporated herein by reference.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Item 6 is hereby amended to add the following:

On April 21, 2016, the Potrero Group and the Issuer entered into the Cooperation Agreement as defined and described in Item 4 above and attached as Exhibit 99.1 hereto.

Item 7. Material to Be Filed as Exhibits.

Item 7 is hereby amended to add the following exhibit:

99.1 Cooperation Agreement, dated April 21, 2016

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CUSIP NO. 237917208

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.

Dated: April 22, 2016

POTRERO CAPITAL RESEARCH PARTNERS, LP

By: Potrero Capital Research, LLC, its General Partner

/s/ Jack Ripsteen

Jack Ripsteen

Managing Member

POTRERO CAPITAL RESEARCH PARTNERS II, LP

By: Potrero Capital Research, LLC, its General Partner

/s/ Jack Ripsteen

Jack Ripsteen

Managing Member

POTRERO CAPITAL RESEARCH, LLC

/s/ Jack Ripsteen

Jack Ripsteen

Managing Member

JACK RIPSTEEN

/s/ Jack Ripsteen

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