KOPPERS INC

Q: Jun 30 2009

Q: Mar 31 2009

FY: Dec 31 2008

Q: Sep 30 2008

Q: Jun 30 2008

Q: Mar 31 2008

FY: Dec 31 2007

Q: Sep 30 2007

Q: Jun 30 2007

Q: Mar 31 2007

FY: Dec 31 2006

Q: Sep 30 2006

Q: Jun 30 2006

Q: Mar 31 2006

FY: Dec 31 2005

Q: Sep 30 2005

Q: Jun 30 2005

Q: Mar 31 2005

FY: Dec 31 2004

Q: Sep 30 2004

2.01

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

5.02

Entry into a Material Definitive Agreement

1.01,9.01

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

5.02,9.01

Cost Associated with Exit or Disposal Activities

Entry into a Material Definitive Agreement

2.03,9.01

1.01,9.01

2.05

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

1.02,9.01

8.01

8.01

8.01,9.01

2.02,9.01

Automatic Shelf Registration

Automatic Shelf Registration

Post-effective amendment to a registration statement

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

No description available

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Post Effective Amendment to S-8

SOUTHERNSUN ASSET MANAGEMENT, LLC

Post-effective amendment to an automatic shelf registration statement

Correspondence with the SEC

Correspondence with the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

Letter from the SEC

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)