SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
 
SCHEDULE 13D/A
 
(Rule 13d-101)
 
Information to be Included in Statements Filed Pursuant to Rule 13d-1(a) and
Amendments Thereto Filed Pursuant to Rule 13d-2(a)

(Amendment No. 1)*
 
QuantRx Biomedical Corporation  

(Name of Issuer)
 
Common Stock, par value $0.01 per share

(Title of Class of Securities)
 
74765N109

(CUSIP Number)
 
Sherbrooke Partners, LLC
c/o Burnham Hill
590 Madison Avenue, 5th Floor
New York, New York 10023
Attention: Matthew Balk
(212) 980-2700

(Name, Address and Telephone Number of Person Authorized to
Receive Notices and Communications)
 
February 1, 2010

(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 which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box o
 
Note : Schedules filed in paper format shall include a signed original and five copies of the Schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent.
 
*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, as amended (the “Exchange Act”) or otherwise subject to the liabilities of that section of the Exchange Act but shall be subject to all other provisions of the Exchange Act (however, see the Notes ).
 

 
SCHEDULE 13D
CUSIP No. 74765N109
 
1
NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 
Sherbrooke Partners, LLC
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)                 
(a) o      
(b) x      
 
3
SEC USE ONLY
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
OO
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)                       o
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
 
Number of
Shares
7
SOLE VOTING POWER
2,830,255
Beneficially
Owned by
8
SHARED VOTING POWER
0
Each
Reporting
9
SOLE DISPOSITIVE POWER
2,830,255
Person With
10
SHARED DISPOSITIVE POWER
0
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,830,255
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)                         o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
6.37%*
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
OO
 
*           Percentage calculated on the basis of 44,427,630 shares of common stock issued and outstanding on November 10, 2009, as set forth in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 14, 2009.

2

 
SCHEDULE 13D
CUSIP No. 74765N109
 
1
NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 
Matthew Balk
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)                 
(a) o      
(b) x      
 
3
SEC USE ONLY
 
4
SOURCE OF FUNDS (SEE INSTRUCTIONS)
 
OO
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)                       o
 
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
 
Number of
Shares
7
SOLE VOTING POWER
2,830,255
Beneficially
Owned by
8
SHARED VOTING POWER
0
Each
Reporting
9
SOLE DISPOSITIVE POWER
2,830,255
Person With
10
SHARED DISPOSITIVE POWER
0
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,830,255
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)                         o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
6.37%*
14
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IN
 
*           Percentage calculated on the basis of 44,427,630 shares of common stock issued and outstanding on November 10, 2009, as set forth in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 14, 2009.
 
3


CUSIP No. 74765N109
Schedule 13D
 
EXPLANATORY NOTE

This Amendment No. 1 (this “Amendment”) amends the Statement of Beneficial Ownership on Schedule 13D originally filed with the Securities and Exchange Commission on March 29, 2006 (the “Schedule 13D”), on behalf of Sherbrooke Partners, LLC and Matthew Balk (collectively, the “Reporting Persons”).  All capitalized terms not otherwise defined in this Amendment shall have the meanings attributed to such terms in the Schedule 13D.

This Amendment is being filed by the Reporting Persons to update the Reporting Persons’ beneficial  ownership as a result of changes to Matthew Balk’s status as custodian for his children with respect to certain of the Issuer’s securities.

Item 3.
Source and Amount of Funds or Other Consideration.
 
Item 3 is hereby amended and restated in its entirety as follows:

In October 2004, Sherbrooke Partners purchased 1,750,000 shares of Series A Convertible Preferred Stock of the Issuer (“Series A Stock”) and warrants to purchase an aggregate of 462,006 shares of Series A Stock (the “Warrants”) from Goldman Sachs & Co. (“Goldman”) for an aggregate purchase price of $46,715.64. In November 2004, Sherbrooke Partners exercised Warrants to purchase an aggregate of 462,006 shares of Series A Stock for an aggregate purchase price of $4,620.06. Shares of Series A Stock are convertible into shares of Common Stock. In November 2004, the Issuer issued to Sherbrooke Partners 900,000 shares of Common Stock for an aggregate purchase price of $45,000. In July 2005, Sherbrooke Partners also purchased 300,000 shares of Common Stock from a shareholder of the Issuer in a private transaction for an aggregate purchase price of $75,000. Immediately following the purchase, Sherbrooke Partners gifted to an individual 10,000 of the 300,000 shares of Common Stock purchased.
 
The source of the funds for the acquisition of securities described in this paragraph was the working capital of Sherbrooke Partners.
 
In February 2006, Sherbrooke Partners agreed with the Issuer to convert all of Sherbrooke Partners’ shares of Series A Stock into 3,318,009 shares of Common Stock (a conversion rate of 1.5 shares of Common Stock for each share of Series A Stock). No consideration was paid or received by Sherbrooke Partners in connection with this agreement or the conversion of outstanding Series A Stock.
 
In October 2004, Mr. Balk, as custodian for his children, purchased an aggregate of 600,000 shares of Series A Stock from Goldman for an aggregate purchase price of $16,016.80. In November 2004, the Issuer issued to Mr. Balk, as custodian for his children, an aggregate of 320,000 shares of Common Stock for an aggregate purchase price of $16,000. The source of the funds for the acquisition of securities described in this paragraph was the personal funds of Mr. Balk.
 
In February 2006, Mr. Balk, as custodian for his children, agreed with the Issuer to convert all of the shares of Series A Stock held by Mr. Balk, as custodian for his children, into 900,000 shares of Common Stock (a conversion rate of 1.5 shares of Common Stock for each share of Series A Stock). No consideration was paid or received by Mr. Balk, as custodian for his children, in connection with this agreement or the conversion of outstanding Series A Stock.

On February 1, 2010, Mr. Balk ceased to act as custodian for his children with respect to all of the Common Stock held by his children and no longer has voting or dispositive control of the securities of the Issuer held by his children described in this Item 3 (the “Family Shares”). Mr. Balk has retained voting and dispositive control of the securities of the Issuer held by Sherbrooke Partners described in this Item 3.
 
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Item 4.
Purpose of Transaction.
 
Item 4 is hereby amended and restated in its entirety as follows:

Sherbrooke Partners and Mr. Balk, as custodian for his children, acquired the shares of Common Stock, the Warrants and Series A Stock for investment. On February 1, 2010, Mr. Balk ceased to act as custodian for his children with respect to the Family Shares and no longer has voting or dispositive control of the Family Shares. Over time, Sherbrooke Partners and Mr. Balk will review their investments in the securities of the Issuer and may, at such time and from time to time, determine to acquire additional securities of the Issuer or to dispose of all or any portion of the securities of the Issuer beneficially held by them at any time. Except as stated below, neither Sherbrooke Partners nor Mr. Balk has any plans or proposals which relate to or would result in:
 
(a)           The acquisition of additional securities of the Issuer, or the disposition of any securities of the Issuer, other than sales, from time to time, of the Common Stock in accordance with Rule 144 promulgated under the Securities Act of 1933, as amended;
 
(b)          An extraordinary corporate transaction, such as a merger, reorganization or liquidation involving the Issuer or any of its subsidiaries;
 
(c)          A sale or transfer of a material amount of assets of the Issuer or of any of its subsidiaries;
 
(d)          Any change in the management of the Issuer, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the board of directors of the Issuer;
 
(e)            A material change in the present capitalization or dividend policy of the Issuer;
 
(f)           Any other material change in the Issuer’s business or corporate structure;
 
(g)          Any change in the Issuer’s charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person;
 
(h)          A class of securities of the Issuer being delisted from a national securities exchange or ceasing to be authorized to be quoted in the inter-dealer quotation system of a registered national securities association;
 
(i)           A class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Exchange Act; or
 
(j)            Any action similar to any of those enumerated above.
 
Item 5.
Interest in Securities of the Issuer.
 
Item 5 is hereby amended and restated in its entirety as follows:

According to the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 14, 2009, there were 44,427,630 shares of Common Stock outstanding as of November 10, 2009. The percentages of shares of Common Stock beneficially held by Sherbrooke Partners and Mr. Balk set forth below are based on the foregoing outstanding share figure.
 
5

 
(a)           Sherbrooke Partners beneficially owns 2,830,255 shares of Common Stock, which constitutes 6.37% of the outstanding shares of Common Stock. Mr. Balk is the managing member of Sherbrooke Partners and in such capacity has the sole power to vote and dispose of such shares.
 
Mr. Balk beneficially owns 2,830,255 shares of Common Stock (which includes all of the shares of Common Stock beneficially owned by Sherbrooke Partners), which constitutes 6.37% of the outstanding shares of Common Stock. Mr. Balk has the sole power to vote and dispose of such shares.
 
(b)          As to the shares of Common Stock beneficially owned by Sherbrooke Partners, the number of shares as to which Sherbrooke Partners has:
 
(i)
Sole power to vote or to direct the vote: 2,830,255
 
(ii)
Shared power to vote or to direct the vote: 0
 
(iii)
Sole power to dispose or to direct the disposition of: 2,830,255
 
(iv)
Shared power to dispose or to direct the disposition of: 0
 
As to the shares of Common Stock beneficially owned by Mr. Balk, the number of shares as to which Mr. Balk has:
 
(i)
Sole power to vote or to direct the vote: 2,830,255
 
(ii)
Shared power to vote or to direct the vote: 0
 
(iii)
Sole power to dispose or to direct the disposition of: 2,830,255
 
(iv)
Shared power to dispose or to direct the disposition of: 0
 
(c)           In the past 60 days neither Sherbrooke Partners nor Mr. Balk has effected any transactions involving Common Stock.
 
(d)             Not applicable.
 
(e)             Not applicable.
 
6

 
SIGNATURES
 
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.
 
Date:  March 23, 2010
 
/s/ Matthew Balk
 
Matthew Balk, Individually
 
 
SHERBROOKE PARTNERS, LLC
     
By:
/s/ Matthew Balk
 
 
Matthew Balk, its managing member
 

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