SPECTRUMEDIX CORP

Notice under Rule 12b25 of inability to timely file all or part of a Form 10-K, 10-KSB, or 10-KT for period ending 2001-03-31

Notice under Rule 12b25 of inability to timely file all or part of a Form 10-K, 10-KSB, or 10-KT for period ending 2000-03-31

Notice under Rule 12b25 of inability to timely file all or part of a form 10-Q or 10-QSB for period ending 1999-12-31

Notice under Rule 12b25 of inability to timely file all or part of a form 10-Q or 10-QSB for period ending 1999-09-30

Notice under Rule 12b25 of inability to timely file all or part of a form 10-Q or 10-QSB for period ending 1999-06-30

Notice under Rule 12b25 of inability to timely file all or part of a Form 10-K, 10-KSB, or 10-KT for period ending 1999-03-31

Notice under Rule 12b25 of inability to timely file all or part of a form 10-Q or 10-QSB for period ending 1998-12-31

Current report filing

Current report filing

Current report filing

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

None

None

None

None

None

None

None

None

None

PE CORP: Major Shareholders

SONNENSCHEIN BERNARD: Annual statement of changes in beneficial ownership of securities

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)

Prospectus filed pursuant to Rule 424(b)(1)

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

Definitive proxy statements