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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. )*

ROCKWELL MEDICAL TECHNOLOGIES, INC.
(Name of Issuer)
Common Stock, no par value per share
(Title of Class of Securities)
774374102
(CUSIP Number)
November 28, 2007
(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

     o Rule 13d-1(b)

     þ Rule 13d-1(c)

     o Rule 13d-1(d)

* 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 the disclosures provided in a prior cover page.

The information required in 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 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

 
 


 

                     
CUSIP No.
 
774374102 
  Page  
  of   

 

           
1   NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
RA Capital Management, LLC
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   o
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  5   SOLE VOTING POWER
     
NUMBER OF   1,366,667
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   0
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   1,366,667
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    0
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  1,366,667
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  9.9%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  IA

2


 

                     
CUSIP No.
 
774374102 
  Page  
  of   

 

           
1   NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
Richard H. Aldrich
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   o
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  USA
       
  5   SOLE VOTING POWER
     
NUMBER OF   0
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   1,366,667
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   0
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    1,366,667
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  1,366,667
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  9.9%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  IN

3


 

                     
CUSIP No.
 
774374102 
  Page  
  of   

 

           
1   NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
Peter Kolchinsky
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   o
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  USA
       
  5   SOLE VOTING POWER
     
NUMBER OF   0
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   1,366,667
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   0
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    1,366,667
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  1,366,667
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  9.9%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  IN

4


 

                     
CUSIP No.
 
774374102 
  Page  
  of   

 

           
1   NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
RA Capital Biotech Fund, L.P.
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   o
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  5   SOLE VOTING POWER
     
NUMBER OF   1,350,267
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   0
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   1,350,267
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    0
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  1,350,267
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  9.8%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  PN

5


 

                     
CUSIP No.
 
774374102 
  Page  
  of   

 

           
1   NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
RA Capital Biotech Fund II, L.P.
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   o
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  5   SOLE VOTING POWER
     
NUMBER OF   16,400
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   0
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   16,400
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    0
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  16,400
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  .1%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  PN

6


 

                     
CUSIP No.
 
774374102 
  Page  
  of   
Item 1.
(a)      Name of Issuer: Rockwell Medical Technologies, Inc. (the “Issuer”).
(b)      Address of the Issuer’s Principal Executive Offices: 30142 Wixom Road, Wixom, MI 48393.
Item 2.
(a)      Name of Person Filing: This joint statement on Schedule 13G is being filed by Richard H. Aldrich, Peter Kolchinsky, RA Capital Management, LLC, RA Capital Biotech Fund, L.P. and RA Capital Biotech Fund II, L.P., who are collectively referred to as the “Reporting Persons.” Mr. Aldrich and Mr. Kolchinsky (together, the “Managers”) are the managers of RA Capital Management, LLC (“Capital”), which is the sole general partner of RA Capital Biotech Fund, L.P. (“Fund I”) and RA Capital Biotech Fund II, L.P. (“Fund II”). The Reporting Persons have entered into a Joint Filing Agreement, dated as of the date hereof, a copy of which is filed with this Schedule 13G as Exhibit 1 (which is incorporated herein by reference), pursuant to which the Reporting Persons have agreed to file this statement jointly in accordance with the provisions of Rule 13d-1(k) under the Act.
(b)      Address of Principal Business Office: The principal business office of the Reporting Persons with respect to the shares reported hereunder is 111 Huntington Avenue, Suite 610, Boston, MA 02199.
(c)      Citizenship: Capital is a Massachusetts limited liability company. Each of Fund I and Fund II is a Delaware limited partnership. The Managers are U.S. citizens.
(d)      Title and Class of Securities: Common stock, no par value per share (“Common Stock”)
(e)      CUSIP Number: 774374102
Item 3.      If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
Not applicable
Item 4.      Ownership
In the aggregate, the Reporting Persons beneficially own 1,366,667 shares of the Common Stock of the Issuer, representing approximately 9.9% of such class of securities. The Reporting Persons have the right to purchase an additional 683,334 shares of Common Stock pursuant to the terms of a warrant issued on November 28, 2007, however pursuant to the terms of such warrant, such shares are not exercisable within 60 days of the date of this filing.
The beneficial ownership of each Reporting Person is as follows: (i) Fund I beneficially owns 1,350,267 shares of Common Stock representing approximately 9.8% of the class, (ii) Fund II beneficially owns 16,400 shares of Common Stock representing approximately .1% of the class

 


 

                     
CUSIP No.
 
774374102 
  Page  
  of   
and (iii) Capital, as the sole general partner of each of Fund I and Fund II, and Mr. Aldrich and Mr. Kolchinsky as the managers of Capital, each beneficially own 1,366,667 shares of Common Stock of the Issuer representing approximately 9.9% of the class. The percentage of the Common Stock beneficially owned by each Reporting Person is based on a total of 13,793,086 shares of Common Stock of the Issuer outstanding as of December 4, 2007, representing the number of shares outstanding as reported in the most recent quarterly report of the Issuer on Form 10-Q for the fiscal quarter ended October 31, 2007, together with the aggregate number of shares of Common Stock issued pursuant to a private placement as reported in the current report of the Issuer on Form 8-K filed on December 4, 2007.
Each of Fund I and Fund II has the power to vote and dispose of the shares of Common Stock beneficially owned by such entity (as described above). Capital, as the sole general partner of each of Fund I and Fund II, has the sole authority to vote and dispose of all of the shares of Common Stock reported in this Schedule 13G. The Managers, by virtue of their position as managers of Capital, have the shared authority to vote and dispose of all of the shares of Common Stock reported in this joint statement Schedule 13G.
Item 5.      Ownership of Five Percent or Less of a Class
Not applicable
Item 6.      Ownership of More than Five Percent on Behalf of Another Person
Not applicable
Item 7.      Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person
Not applicable
Item 8.      Identification and Classification of Members of the Group
Not applicable
Item 9.      Notice of Dissolution of Group
Not applicable
Item 10.    Certification
By signing below I hereby certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

 


 

                     
CUSIP No.
 
774374102 
  Page  
  of   
Signature
     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: December 7, 2007


RA CAPITAL BIOTECH FUND, L.P.
 
 
  By:   /s/ Richard H. Aldrich    
    Richard H. Aldrich   
    Manager   
 
         
  RA CAPITAL BIOTECH FUND II, L.P.
 
 
  By:   /s/ Richard H. Aldrich    
    Richard H. Aldrich   
    Manager   
 
         
  RA CAPITAL MANAGEMENT, LLC
 
 
  By:   /s/ Richard H. Aldrich    
    Richard H. Aldrich   
    Manager   
 
         
  RICHARD H. ALDRICH
 
 
  /s/ Richard H. Aldrich    
     
     
 
         
  PETER KOLCHINSKY
 
 
  /s/ Peter Kolchinsky    
     
     
 

 


 

Exhibit 1
JOINT FILING AGREEMENT
     Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agrees, as of December 7, 2007, that only one statement containing the information required by Schedule 13G, and each amendment thereto, need be filed with respect to the ownership by each of the undersigned of shares of Common Stock of Rockwell Medical Technologies, Inc., and such statement to which this Joint Filing Agreement is attached as Exhibit 1 is filed on behalf of each of the undersigned.
         
  RA CAPITAL BIOTECH FUND, L.P.
 
 
  By:   /s/ Richard H. Aldrich    
    Richard H. Aldrich   
    Manager   
 
         
  RA CAPITAL BIOTECH FUND II, L.P.
 
 
  By:   /s/ Richard H. Aldrich    
    Richard H. Aldrich   
    Manager   
 
         
  RA CAPITAL MANAGEMENT, LLC
 
 
  By:   /s/ Richard H. Aldrich    
    Richard H. Aldrich   
    Manager   
 
         
  RICHARD H. ALDRICH
 
 
  /s/ Richard H. Aldrich    
     
     
 
         
  PETER KOLCHINSKY
 
 
  /s/ Peter Kolchinsky