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*
MPM BIOVENTURES II QP LP

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
SENORX INC [ SENO ]
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)
06/25/2010
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 06/25/2010 S 161,293(1) D $10.97 2,032,475 I See footnote(2)
Common Stock 06/28/2010 S 46,600(3) D $10.97 1,985,875 I See footnote(4)
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*
MPM BIOVENTURES II QP LP

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM BIOVENTURES II LP

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM BIOVENTURES GMBH & CO PARALLEL BETEILIGUNGS KG

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM ASSET MANAGEMENT INVESTORS 2001 LLC

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM ASSET MANAGEMENT II LP

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM ASSET MANAGEMENT II LLC

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
GADICKE ANSBERT

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
STEINMETZ MICHAEL

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
EVNIN LUKE

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
GALAKATOS NICHOLAS

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON STREET, 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. The shares were sold as follows: 108,744 by MPM BioVentures II-QP, L.P. ("BV II QP"), 12,000 by MPM BioVentures II, L.P. ("BV II"), 2,258 by MPM Asset Management Investors 2001 LLC ("AM 2001") and 38,291 by MPM BioVentures GmbH & Co. Parallel-Beteiligungs KG ("BV KG"). MPM Asset Management II, L.P. ("AM II GP") and MPM Asset Management II LLC ("AM II LLC") are the direct and indirect general partners of BV II QP, BV II and BV KG. Luke Evnin, Ansbert Gadicke, Nicholas Galakatos, Michael Steinmetz and Kurt Wheeler are the members of AM II LLC and AM 2001.
2. The shares are held as follows: 1,370,297 by BV II QP, 151,216 by BV II, 28,453 by AM 2001 and 482,509 by BV KG. Each member of the group disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.
3. The shares were sold as follows: 31,418 by BV II QP, 3,467 by BV II, 652 by AM 2001 and 11,063 by BV KG.
4. The shares are held as follows: 1,338,879 by BV II QP, 147,749 by BV II, 27,801 by AM 2001 and 471,446 by BV KG. Each member of the group disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.
Remarks:
See Form 4 for Kurt Wheeler filed simultaneously herewith for additional members of this joint filing.
By Luke Evnin, manager of MPM Asset Management II LLC, the general partner of MPM Asset Management II, L.P., the general partner of MPM BioVentures II-QP, L.P /s/ Luke Evnin 06/29/2010
By Luke Evnin, manager of MPM Asset Management II LLC, the general partner of MPM Asset Management II, L.P.,the general partner of MPM BioVentures II, L.P /s/ Luke Evnin 06/29/2010
By Luke Evnin, manager of MPM Asset Management II LLC, the general partner of MPM Asset Management II, L.P.,the special limited partner of MPM BioVentures GmbH and Co. Parallel-Beteiligungs KG /s/ Luke Evnin 06/29/2010
By Luke Evnin, manager of MPM Asset Management Investors 2001 LLC /s/ Luke Evnin 06/29/2010
By Luke Evnin, manager of MPM Asset Management II LLC, the general partner of MPM Asset Management II, L.P. /s/ Luke Evnin 06/29/2010
By Luke Evnin, investment manager of MPM Asset Managment II, LLC /s/ Luke Evnin 06/29/2010
/s/ Ansbert Gadicke 06/29/2010
/s/ Michael Steinmetz 06/29/2010
/s/ Luke Evnin 06/29/2010
/s/ Nicholas Galakatos 06/29/2010
** 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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