SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Mast Capital Management, LLC

(Last) (First) (Middle)
200 CLARENDON STREET
51ST FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
UNWIRED PLANET, INC. [ UPIP ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
10/28/2015
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
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, $0.001 Par Value 10/28/2015 S 4,511,389 D $0.8765 0(1) I See Footnote(2)
Common Stock, $0.001 Par Value 10/28/2015 S 4,338,000 D $0.8765 0(1) I See Footnote(3)
Common Stock, $0.001 Par Value 10/28/2015 P 8,849,389 A $0.8765 10,117,671(1) I See Footnote(4)
Common Stock, $0.001 Par Value 10,951,109(1) I See Footnote(5)
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 Securities Underlying Derivative Security (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: 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
1. Name and Address of Reporting Person*
Mast Capital Management, LLC

(Last) (First) (Middle)
200 CLARENDON STREET
51ST FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Steinberg David J.

(Last) (First) (Middle)
200 CLARENDON STREET
51ST FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)
Explanation of Responses:
1. The filing of this Form 4 shall not be construed as an admission that MAST Capital Management, LLC ("MAST Capital") or David J. Steinberg, the principal of MAST Capital, is or was for the purposes of Section 16(a) of the Securities Exchange Act of 1934, as amended, or otherwise the beneficial owner of any of the Common Stock, $0.001 Par Value (the "Common Stock"), of Unwired Planet, Inc. (the "Issuer") purchased by certain private investment funds advised by MAST Capital (collectively, the "MAST Accounts"). Pursuant to Rule 16a-1, both MAST Capital and Mr. Steinberg disclaim such beneficial ownership except to the extent of such person's pecuniary interest.
2. Mast Credit Opportunities I Master Fund Limited, for which MAST Capital is the investment manager, holds 0 shares of Common Stock of the Issuer. David J. Steinberg reports the Common Stock held indirectly by MAST Capital because, as the principal of MAST Capital at the time of purchase, he controlled the disposition and voting of the securities. MAST Capital has the right to an asset-based fee relating the above fund.
3. Mast Select Opportunities Master Fund LP, for which MAST Capital is the investment manager, holds 0 shares of Common Stock of the Issuer. David J. Steinberg reports the Common Stock held indirectly by MAST Capital because, as the principal of MAST Capital at the time of purchase, he controlled the disposition and voting of the securities. MAST Capital has the right to an asset-based fee relating the above fund.
4. Mast Admiral Master Fund LP, for which MAST Capital is the investment manager, holds 10,117,671 shares of Common Stock of the Issuer. David J. Steinberg reports the Common Stock held indirectly by MAST Capital because, as the principal of MAST Capital at the time of purchase, he controlled the disposition and voting of the securities. MAST Capital has the right to an asset-based fee relating the above fund.
5. Mast OC I Master Fund LP, for which MAST Capital is the investment manager, holds 10,951,109 shares of Common Stock of the Issuer. David J. Steinberg reports the Common Stock held indirectly by MAST Capital because, as the principal of MAST Capital at the time of purchase, he controlled the disposition and voting of the securities. MAST Capital has the right to an asset-based fee relating the above fund.
Remarks:
/s/ David J., Steinberg, Authorized Person of MAST Capital Management, LLC 10/28/2015
/s/ David J. Steinberg 10/28/2015
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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