EXHIBIT 32
Certification
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)
Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of ImmunoGen, Inc., a Massachusetts corporation (the “Company”), does hereby certify, to such officer’s knowledge, that:
The Quarterly Report for the period ended September 30, 2004 (the “Form 10-Q”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.
Dated: November 8, 2004 | /s/ Mitchel Sayare |
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| Mitchel Sayare |
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| Chairman of the Board of Directors, Chief Executive |
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| Officer and President |
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Dated: November 8, 2004 | /s/ Christopher U. Missling |
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| Christopher U. Missling |
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| Chief Financial Officer and Vice President, Finance |
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