ECOGEN INC

FY: Oct 31 2002

Q: Jul 31 2002

Q: Jul 31 2002

Q: Apr 30 2002

Q: Jan 31 2002

FY: Oct 31 2001

Q: Jul 31 2001

Q: Apr 30 2001

FY: Oct 31 2001

Q: Jul 31 2001

Q: Apr 30 2001

Q: Apr 30 2001

Q: Apr 30 2001

Q: Jan 31 2001

FY: Oct 31 2000

Q: Jan 31 2001

FY: Oct 31 2000

Q: Jul 31 2000

Q: Jul 31 2000

Q: Apr 30 2000

5

2,5,7

4,7

5

Changes in control of registrant

5

5

2,7

2,7

5

5,7

2,7

5

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

2,7

Certification of termination of registration of a class of securities (Section 12(g))

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Required Information in Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

MARX MOSES

MARX MOSES

MARX MOSES

MONSANTO CO /NEW/

MARX MOSES

MARX MOSES

MARX MOSES

BIOINVEST LTD

MARX MOSES

HARRIS JAY R

GOLDSMITH & HARRIS INC /NY/ /ADV

HARRIS JAY R

DOW CHEMICAL CO /DE/

DOW CHEMICAL CO /DE/

GOLDSMITH & HARRIS INC /NY/ /ADV

AGROINVEST LTD

AGROINVEST LTD

AGROINVEST LTD

AGROINVEST LTD

MARX MOSES

Definitive information statement