MORRISON KNUDSEN CORP

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)

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)

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

Current report pursuant to Section 13 or 15(d)

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

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

No description available

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

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

Notification of late filing of Form 10-Q

Registration of Securities on Exchange (amendment)

No description available

Notification of late filing of Form 10-K

Registration of Securities on Exchange (amendment)

5

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) (amendment)

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

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

5

Notification of late filing of Form 10-Q

2,5,7

5

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

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

Notification of late filing of Form 10-Q

Definitive Proxy Statement

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

Current report pursuant to Section 13 or 15(d)

No description available

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

Current report pursuant to Section 13 or 15(d)

Notification of late filing of Form 10-Q

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

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

Notification of late filing of Form 10-K

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

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)

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

Post Effective Amendment to S-8

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

Current report pursuant to Section 13 or 15(d)

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

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

Current report pursuant to Section 13 or 15(d)

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

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

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

Registration statement under Securities Act of 1933 (amendment)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

Registration statement under Securities Act of 1933

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)

Current report pursuant to Section 13 or 15(d)

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