PROTON ENERGY SYSTEMS INC

5,7

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

Post Effective Amendment to S-8

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

ITEM INFORMATION: Financial statements and exhibits

No description available

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

5,7

Written communication about a business combination transaction (Rule 425)

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

ITEM INFORMATION: Financial statements and exhibits

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

5,7

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

7,9

Annual Report Scanned (Paper)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

5,7

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

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

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

Annual Report Scanned (Paper)

Definitive Proxy Statement

No description available

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

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

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

Definitive Proxy Statement

No description available

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

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus filed under Rule 424(b)(1)

Amended Initial Registration Statement

Amended Initial Registration Statement

Amended Initial Registration Statement

No description available

Amended Initial Registration Statement

Amended Initial Registration Statement

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

AUBE RICHARD A

PROTON ENERGY SYSTEMS INC

PROTON ENERGY SYSTEMS INC

SCHROEDER WALTER W

GLIDDEN JOHN A

SHAW ROBERT W JR

SHAW ROBERT W JR

SHARP PHILIP R

CUDAHY MICHAEL J

OSTROSKI GERALD B

OZANNE JAMES

SHAW ROBERT W JR

CUDAHY MICHAEL J

OZANNE JAMES

OZANNE JAMES

SHAW ROBERT W JR

OSTROSKI GERALD B

OZANNE JAMES

SHARP PHILIP R