RATIONAL SOFTWARE CORP

Quarterly Report for period ending 2002-12-31

Quarterly Report for period ending 2002-09-30

Quarterly Report for period ending 2002-06-30

Annual Report for period ending 2002-03-31

Quarterly Report for period ending 2001-12-31

Quarterly Report for period ending 2001-09-30

Quarterly Report for period ending 2001-06-30

Annual Report for period ending 2001-03-31

Quarterly Report for period ending 2000-12-31

Quarterly Report for period ending 2000-09-30

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Notice of termination of registration of a class of securities under Section 12(g)

Annual report to security holders

Annual Report with disclosure of delinquent filers

Annual Report with disclosure of delinquent filers

VANGUARD PRIMECAP FUND/: Major Shareholders

DEVLIN MICHAEL T: Statement of changes in beneficial ownership of securities

LEVY PAUL D: Statement of changes in beneficial ownership of securities

BOGAN THOMAS F: Statement of changes in beneficial ownership of securities

SCHLEICHER ALLISON R: Statement of changes in beneficial ownership of securities

HENSHALL DAVID J: Statement of changes in beneficial ownership of securities

MONTAGUE JOHN E: Statement of changes in beneficial ownership of securities

DENEND LESLIE G: Statement of changes in beneficial ownership of securities

HAAR KEVIN J: Statement of changes in beneficial ownership of securities

BERNSTEIN DAVID H /: Statement of changes in beneficial ownership of securities

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Prospectus filed pursuant to Rule 424(b)(3)

Prospectus filed pursuant to Rule 424(b)(3)

Prospectus filed pursuant to Rule 424(b)(3)

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Prospectus filed pursuant to Rule 424(b)(3)

Registration statement for specified transactions by certain issuers

Prospectus filed pursuant to Rule 424(b)(3)

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Definitive additional proxy soliciting materials filed by non-management including Rule 14(a)(12) material

Definitive proxy statement relating to a merger, acquisition, or disposition

Definitive additional proxy soliciting materials filed by non-management including Rule 14(a)(12) material

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Preliminary proxy statement relating to a merger, acquisition, or disposition

Definitive additional proxy soliciting materials filed by non-management including Rule 14(a)(12) material

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive proxy statements