Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Mahony Colin P.
  2. Issuer Name and Ticker or Trading Symbol
DATAWATCH CORP [DWCH]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O DATAWATCH CORPORATION, 4 CROSBY DRIVE
3. Date of Earliest Transaction (Month/Day/Year)
12/13/2018
(Street)

BEDFORD, MA 01730
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 12/13/2018   U   2,333 D (1) 11,667 D  
Common Stock 12/13/2018   D   11,667 D (2) 0 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Mahony Colin P.
C/O DATAWATCH CORPORATION
4 CROSBY DRIVE
BEDFORD, MA 01730
  X      

Signatures

 /s/ Robert V. Jahrling as attorney-in-fact for Reporting Person   12/13/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement"), dated as of November 5, 2018, by and among Datawatch Corporation, a Delaware corporation (the "Company"), Altair Engineering Inc., a Delaware corporation (the "Altair"), and Dallas Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Altair (the "Purchaser"), and the terms of the Tender and Support Agreement, dated as of November 5, 2018, by and among Altair, Purchaser and each stockholder of the Company listed on Annex I of the Tender and Support Agreement, the reporting person disposed of these shares of the Company's Common Stock in the tender offer launched by Purchaser.
(2) Pursuant to the terms of restricted stock unit ("RSU") grant agreements, the vesting of RSUs was accelerated in connection with the Merger and such RSUs became fully vested effective immediately prior to the effective time of the merger contemplated by the Merger Agreement (the "Merger"). Pursuant to the terms of the Merger Agreement, each such RSU was cancelled in the Merger and, in lieu of any issuance of shares in settlement of such RSU, converted into the right to receive a cash payment equal to $13.10 per share (without interest and less any applicable tax withholding).

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