ECOGEN INC

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

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Notification of late filing of Form 10-K

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Notification of late filing of Form 10-Q

5

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

2,5,7

General form for quarterly reports under Section 13 or 15(d)

Definitive information statement

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d) (amendment)

General form for quarterly reports under Section 13 or 15(d) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Notification of late filing of Form 10-K

4,7

5

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Changes in control of registrant

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Notification of late filing of Form 10-Q

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

Notification of late filing of Form 10-Q

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Notification of late filing of Form 10-K

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

General form for quarterly reports under Section 13 or 15(d)

Notification of late filing of Form 10-Q

5

5

General form for quarterly reports under Section 13 or 15(d)

2,7

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Registration statement under Securities Act of 1933

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

2,7

Definitive Proxy Statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

5

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Registration statement under Securities Act of 1933

Definitive Proxy Statement

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

5,7

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

2,7

Preliminary Proxy Statement

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

5

Current report pursuant to Section 13 or 15(d)

Preliminary Proxy Statement

Required Information in Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Current report pursuant to Section 13 or 15(d)

2,7

MARX MOSES

MARX MOSES