SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported) July 31, 2003
REPLIGEN CORPORATION
(Exact name of registration as specified in charter)
Delaware 0-14656 04-2729386
(State or other (Commission (IRS Employer
jurisdiction of File Number) Identification No.)
incorporation)
41 Seyon Street, Bldg. 1, Suite 100, Waltham, MA 02453
(Address of principal executive offices) (Zip Code)
Registrant's telephone number, including area code (781) 250-0111
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(Former name or former address, if changed since last report.)
Item 12. Results of Operations and Financial Condition.
On July 31, 2003, Repligen issued a press release announcing its results
of operations for the first quarter ended June 30, 2003. The information
contained in the press release, which is attached as Exhibit 99.1 to this
report, is incorporated herein by reference.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.
REPLIGEN CORPORATION
Dated: July 31, 2003 By: /s/ Walter C. Herlihy
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Walter C. Herlihy
Chief Executive Officer and President
EXHIBIT INDEX
Exhibit No. Exhibit
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99.1 Press Release, dated July 31, 2003