CATALYTICA ENERGY SYSTEMS INC

Post Effective Amendment to S-8

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

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Notification of removal from listing and/or registration on a national securities exchange

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

8.01,9.01

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

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

Entry into a Material Definitive Agreement

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

8.01,9.01

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

No description available

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

No description available

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

No description available

No description available

Results of Operations and Financial Condition

5.02

5.02,9.01

1.01,9.01

1.01,9.01

Entry into a Material Definitive Agreement

No description available

Financial Statements and Exhibits

Results of Operations and Financial Condition

1.01,1.02,2.01,2.05,9.01

1.01,8.01,9.01

1.01,9.01

No description available

Results of Operations and Financial Condition

2.01,9.01

No description available

Definitive Proxy Statement

Annual report pursuant to 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)

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

Definitive Proxy Statement

Annual report pursuant to 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)

Annual report pursuant to Section 13 or 15(d) (amendment)

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

Definitive Proxy Statement

Annual report pursuant to 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)

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

Annual Report Scanned (Paper)

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

MARXE AUSTIN W & GREENHOUSE DAVID M

COHEN DAVID I;Mittal Saurabh;Noonday Capital, L.L.C.;Noonday Asset Management, L.P.;Noonday G.P. (U.S.), L.L.C.

Moment Jason E;Spokes Andrew J M;Pant Ashish H;WEHRLY MARK C;SCHRIER DEREK C;PATEL RAJIV A;STEYER THOMAS F;FARALLON CAPITAL INSTITUTIONAL PARTNERS L P;FARALLON PARTNERS L L C/CA;FARALLON CAPITAL PARTNERS LP

LANDRY MONICA R;MILLHAM STEPHEN L;MELLIN WILLIAM F;FRIED RICHARD B;DUHAMEL WILLIAM F;MacMahon Douglas M;FARALLON CAPITAL MANAGEMENT LLC;FARALLON CAPITAL INSTITUTIONAL PARTNERS II LP;FARALLON CAPITAL INSTITUTIONAL PARTNERS III LP;TINICUM PARTNERS LP FARALLON

ELLIS WILLIAM B

ZACK ROBERT W

TIERNEY SUSAN F

HOFFEN HOWARD I

MERRION DAVID F

LEVY RICARDO B

ABDOO RICHARD A

MCMAHON WILLIAM J

ZACK ROBERT W

DING CHUN R

Spokes Andrew J M

ZACK ROBERT W

MCMAHON WILLIAM J

Pant Ashish H

ZACK ROBERT W