OREGON STEEL MILLS INC

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 passive holder of more than 5% (Schedule 13G) (amendment)

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

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

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

Tender offer statement by a third party (amendment)

No description available

Tender offer statement by a third party (amendment)

Tender offer statement by a third party (amendment)

No description available

Tender offer statement by a third party (amendment)

No description available

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

Tender offer statement by a third party (amendment)

Tender offer statement by a third party (amendment)

No description available

No description available

Tender offer statement by a third party

1.01,3.03,8.01,9.01

Registration of Securities on Exchange (amendment)

No description available

No description available

No description available

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

2.02,9.01

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

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

2.02,9.01

1.02

2.04,9.01

1.01,2.03

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

2.02,9.01

Definitive Proxy Statement

Other Events

Other Events

Other Events

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

1.01

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

2.02,9.01

Letter from the SEC

Correspondence with the SEC

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

Letter from the SEC

5.02,9.01

Correspondence with the SEC

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

5.02

2.02,9.01

2.02,9.01

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

1.01,5.03,9.01

2.02,9.01

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

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

Prospectus filed under Rule 424(b)(1)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

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

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

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

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

Registration statement under Securities Act of 1933

Withdrawal of a registration statement

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

Registration statement under Securities Act of 1933

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

Definitive Proxy Statement

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

Annual report pursuant to Section 13 or 15(d)

Notification of late filing of Form 10-K

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) (amendment)

Definitive Proxy Statement

Preliminary Proxy Statement

Written communication about a business combination transaction (Rule 425)

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Notification of the removal from listing and registration of matured redeemed or retired securities

Registration statement under Securities Act of 1933

06

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

Definitive Proxy Statement

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

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

Definitive Proxy Statement

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

Definitive Proxy Statement

Registration of Securities on Exchange

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

Definitive Proxy Statement

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

Additional Information for Proxy Statement/ Votes

Additional proxy soliciting materials filed by a non-management party

Additional proxy soliciting materials filed by a non-management party

No description available

No description available

No description available

No description available

Additional proxy soliciting materials filed by a non-management party

No description available

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

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

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)

Prospectus Supplement with Pricing Information

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)

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