Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  BARUCH THOMAS R
2. Date of Event Requiring Statement (Month/Day/Year)
12/06/2007
3. Issuer Name and Ticker or Trading Symbol
ENTROPIC COMMUNICATIONS INC [ENTR]
(Last)
(First)
(Middle)
ONE EMBARCADERO CENTER, SUITE 3250
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
12/06/2007
(Street)

SAN FRANCISCO, CA 94111-3600
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 Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy)   (1)(2) 07/23/2017 Common Stock 51,076 $ 2.665 D  
Series A Convertible Preferred Stock   (3)   (3) Common Stock 1,232,563 $ (3) I See Footnote (11)
Series A Convertible Preferred Stock   (3)   (3) Common Stock 155,799 $ (3) I See Footnote (12)
Series B Convertible Preferred Stock   (4)   (4) Common Stock 1,654,202 $ (4) I See Footnote (11)
Series B Convertible Preferred Stock   (4)   (4) Common Stock 209,095 $ (4) I See Footnote (12)
Series C Convertible Preferred Stock   (5)   (5) Common Stock 883,899 $ (5) I See Footnote (11)
Series C Convertible Preferred Stock   (5)   (5) Common Stock 107,677 $ (5) I See Footnote (12)
Series D-1 Convertible Preferred Stock   (6)   (6) Common Stock 88,707 $ (6) I See Footnote (11)
Series D-1 Convertible Preferred Stock   (6)   (6) Common Stock 10,048 $ (6) I See Footnote (12)
Series D-2 Convertible Preferred Stock   (7)   (7) Common Stock 1,891,741 $ (7) I See Footnote (11)
Series D-2 Convertible Preferred Stock   (7)   (7) Common Stock 238,358 $ (7) I See Footnote (12)
Series D-3 Convertible Preferred Stock   (8)   (8) Common Stock 889,785 $ (8) I See Footnote (11)
Series D-3 Convertible Preferred Stock   (8)   (8) Common Stock 112,469 $ (8) I See Footnote (12)
Warrants to Purchase Common Stock   (9)   (10) Common Stock 44,724 $ 0.4284 I See Footnote (11)
Warrants to Purchase Common Stock   (9)   (10) Common Stock 5,652 $ 0.4284 I See Footnote (12)

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
BARUCH THOMAS R
ONE EMBARCADERO CENTER
SUITE 3250
SAN FRANCISCO, CA 94111-3600
  X   X    

Signatures

/s/ Lance Bridges, attorney-in-fact for Thomas Baruch 12/12/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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) 1/48th of the shares vest in equal installments at the end of each month after the Vesting Commencement Date and continuing for four years beginning 7/24/07; provided that upon a Change in Control (as defined below), if a board seat in the surviving company is not offered to the optionholder, 100% of the shares that remain unvested as of the date of such Change in Control shall immediately vest. (Continue in Footnote 2)
(2) A "Change in Control" means: (i) the direct or indirect sale or exchange in a single transaction or series of related transactions by the stockholders of the Company of more than 50% of the voting stock of the Company; (ii) a merger or consolidation in which the Company is a party after which the stockholders of the Company immediately prior to such transaction hold less than 50% of the voting securities of the surviving entity; (iii) the sale, exchange, or transfer of all or substantially all of the assets of the Company after which the stockholders of the Company immediately prior to such transaction hold less than 50% of the voting securities of the corporation or other business entity to which the assets of the Company were transferred; or (iv) a liquidation or dissolution of the Company. The options may be early exercised prior to vesting but any exercised and unvested shares are subject to a right of repurchase on behalf of the Issuer.
(3) The Series A Preferred Stock has no expiration date and is convertible at any time at the option of the holder and will automatically convert upon the closing of the Issuer's initial public offering, at a conversion ratio of 1.203247177 shares of Common Stock for every one share of Series A Preferred Stock then pursuant to a 1-for-3.25 Reverse Stock Split, for no additional consideration.
(4) The Series B Preferred Stock has no expiration date and is convertible at any time at the option of the holder and will automatically convert upon the closing of the Issuer's initial public offering, at a conversion ratio of one share of Common Stock for every three and 1/4 shares of Series B Preferred Stock, for no additional consideration.
(5) The Series C Preferred Stock has no expiration date and is convertible at any time at the option of the holder and will automatically convert upon the closing of the Issuer's initial public offering, at a conversion ratio of one share of Common Stock for every three and 1/4 shares of Series C Preferred Stock, for no additional consideration.
(6) The Series D-1 Preferred Stock has no expiration date and is convertible at any time at the option of the holder and will automatically convert upon the closing of the Issuer's initial public offering, at a conversion ratio of one share of Common Stock for every three and 1/4 shares of Series D-1 Preferred Stock, for no additional consideration.
(7) The Series D-2 Preferred Stock has no expiration date and is convertible at any time at the option of the holder and will automatically convert upon the closing of the Issuer's initial public offering, at a conversion ratio of one share of Common Stock for every three and 1/4 shares of Series D-2 Preferred Stock, for no additional consideration.
(8) The Series D-3 Preferred Stock has no expiration date and is convertible at any time at the option of the holder and will automatically convert upon the closing of the Issuer's initial public offering, at a conversion ratio of one share of Common Stock for every three and 1/4 shares of Series D-3 Preferred Stock, for no additional consideration.
(9) Warrants became exercisable on September 9, 2003.
(10) Warrants to purchase common stock terminate upon closing of a public offering.
(11) By CMEA Ventures Information Technology II, L.P. Thomas Baruch, a member of the Issuer's board of directors is a general partner of CMEA Ventures IT Management II, L.P. the sole general partner of CMEA Ventures Information Technology II, L.P. and has voting and investment power over the shares held by CMEA Ventures Information Technology II, L.P. Mr. Baruch disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
(12) By CMEA Ventures Information Technology, II, Civil Law Partnership. Thomas Baruch, a member of the Issuer's board of directors is a general partner of CMEA Ventures IT Management II, L.P. the sole managing partner of CMEA Ventures Information Technology II, L.P. and has voting and investment power over the shares held by CMEA Ventures Information Technology, II, Civil Law Partnership. Mr. Baruch disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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