Repligen Corp – ‘NT 10-Q’ for 12/31/95

As of:  Tuesday, 2/13/96   ·   For:  12/31/95   ·   Accession #:  950123-96-557   ·   File #:  0-14656

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Notice of a Late Filing of a Form 10-Q   —   Form 12b-25
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: NT 10-Q     Form 12B-25                                            3     13K 

NT 10-Q
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        UNITED STATES                             OMB APPROVAL
       SECURITIES AND EXCHANGE COMMISSION         OMB Number           3235-0058
            Washington, D.C.  20549               Expires:         June 30, 1994
                                            Estimated average burden
                 FORM 12b-25                     hours per response   . . 2.50

  NOTIFICATION OF LATE FILING                    SEC FILE NUMBER
                                                  2-83862-NY

                                                CUSIP NUMBER
                                                 759916109

(Check One): / / Form 10-K   / / Form 20-F   / / Form 11-K   /X/ Form 10-Q      
/ / Form N-SAR                                          

For Period Ended:  December 31, 1995          
         -----------------
/ /  Transition Report on Form 10-K           
/ /  Transition Report on Form 20-F           
/ /  Transition Report on Form 11-K           
/ /  Transition Report on Form 10-Q           
/ /  Transition Report on Form N-SAR          

For the Transition Period Ended:              

      Read Instruction (on back page) Before Preparing Form. Please Print or
Type.                                                                           

        Nothing in this form shall be construed to imply that the Commission has
verified any information contained herein.                                      

If the notification relates to a portion of the filing checked above, identify  
the Item(s) to which the notification relates:                                  

--------------------------------------------------------------------------------

PART I - REGISTRANT INFORMATION                                               
--------------------------------------------------------------------------------
Full Name of Registrant                                                       

    REPLIGEN CORPORATION
--------------------------------------------------------------------------------
Former Name if Applicable                                                     
Not Applicable  
--------------------------------------------------------------------------------
Address of Principal Executive Office (Street and Number)                     
  One Kendall Square
--------------------------------------------------------------------------------
City, State and Zip Code     Cambridge, Massachusetts 02139                   

PART II - RULES 12b-25(b) AND (c)                                               

If the subject report could not be filed without unreasonable effort or expense 
and the registrant seeks relief pursuant to Rule 12b-25(b), the following should
be completed. (Check box if appropriate)                                        

        (a)     The reasons described in reasonable detail in Part III of this
             form could not be eliminated without unreasonable effort or
expense;                                      

/X/    (b)     The subject annual report, semi-annual report, transition    
      report on Form 10-K, Form 20-F, 11-K, Form N-SAR, or
           portion thereof, will be filed on or before the fifteenth
                calendar day following the prescribed due date; or the subject
                quarterly report of transition report on Form 10-Q, or portion
           thereof will be filed on or before the fifth calendar day
following the prescribed due date; and        

      (c)     The accountant's statement or other exhibit required by Rule
12b-25(c) has been attached if applicable.    

PART III - NARRATIVE                                                            

State below in reasonable detail the reasons why the Form 10-K, 11-K, 10-Q,     
N-SAR, or the transition report or portion thereof, could not be filed within   
the prescribed time period. (Attach Extra Sheets if Needed)                     

SEE ATTACHMENT A            

                                                 (Attach Extra Sheets if Needed)

                                                                SEC 1344 (11-91)

NT 10-Q
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PART IV -- OTHER INFORMATION                                                    

(1) Name and telephone number of person to contact in regard to this            
notification                                                            

Stanley M. Johnson, Esq.         (212)                      692-1856      
------------------------      -----------              ------------------ 
      (Name)                 (Area Code)              (Telephone Number)

(2) Have all other periodic reports required under Section 13 or 15(d) of the   
   Securities Exchange Act of 1934 or Section 30 of the Investment Company Act
    of 1940 during the preceding 12 months (or for such shorter) period that the
  registrant was required to file such reports) been filed? If answer is no,
identify reports(s).                                                    

                                                          /X/  Yes   / /  No

--------------------------------------------------------------------------------

(3) Is it anticipated that any significant change in results of operations from 
  the corresponding period for the last fiscal year will be reflected by the
    earnings statements to be included in the subject report or portion thereof?

                                                          / /  Yes   /X/  No

--------------------------------------------------------------------------------

    If so, attach an explanation of the anticipated change, both narratively and
quantitatively, and, if appropriate, state the reasons why a reasonable 
estimate of the results cannot be made.                                 

REPLIGEN CORPORATION  
--------------------------------------------  
(Name of Registrant as Specified in Charter)  

has caused this notification to be signed on its behalf by the undersigned      
hereunto duly authorized.                                                       

Dated      February 9, 1996        By /s/ Avery W. Catlin,                      
           ----------------           ------------------------------------------
                                      Principal Financial and Accounting Officer

INSTRUCTION: The form may be signed by an executive officer of the registrant or
by any other duly authorized representative. The name and title of the person   
signing the form shall be typed or printed beneath the signature. If the        
statement is signed on behalf of the registrant by an authorized representative 
(other than an executive officer), evidence of the representative's authority to
sign on behalf of the registrant shall be filed with the form.                  

 ATTENTION

Intentional misstatements or omissions of fact constitute Federal Criminal      
Violations (See 18 U.S.C. 1001).                                                

GENERAL INSTRUCTIONS

1.  This form is required by Rule 12b-25 (17 CFR 240.12b-25) of the General     
Rules and Regulations under the Securities Exchange Act of 1934.        

2.  One signed original and four conformed copies of this form and amendments   
thereto must be completed and filed with the Securities and Exchange    
Commission, Washington, D.C. 20549, in accordance with Rule O-3 of the  
    General Rules and Regulations under the Act. The information contained in or
    filed with the form will be made a matter of public record in the Commission
files.                                                                  

3.  A manually signed copy of the form and amendments thereto shall be filed    
  with each national securities exchange on which any class of securities of
the registrant is registered.                                           

4.  Amendments to the notifications must also be filed on form 12b-25 but need  
    not restate information that has been correctly furnished. The form shall be
clearly identified as an amended notification.                          

NT 10-Q
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ATTACHMENT A

The Company is currently in negotiations with one of its technology     
collaborators, a prospective purchaser of certain of its manufacturing assets   
and various creditors, the terms and outcome of which are material to the       
disclosure required to be made in its Quarterly Report on Form 10-Q for the     
period ended December 31, 1995. The Company anticipates that it will be in a    
better position to make disclosure as to these developments at the end of the   
extension period requested herein.                                              

Dates Referenced Herein   and   Documents Incorporated by Reference

				Referenced-On Page
This ‘NT 10-Q’ Filing		Date		First		Last			Other Filings
		2/15/96
Filed on:		2/13/96
		2/9/96		2
For Period End:		12/31/95		1		3			10-Q
		6/30/94		1
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