IRI INTERNATIONAL CORP

Q: Mar 31 2000

FY: Dec 31 1999

Q: Sep 30 1999

Q: Jun 30 1999

Q: Mar 31 1999

FY: Dec 31 1998

FY: Dec 31 1998

Q: Sep 30 1998

Q: Jun 30 1998

Q: May 15 1998

FY: Dec 31 1997

FY: Dec 31 1997

5,7

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

Written communication about a business combination transaction (Rule 425)

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

Prospectus filed under Rule 424(b)(1)

Amended Initial Registration Statement

Registration of Securities on Exchange

Amended Initial Registration Statement

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

Definitive Proxy Statement

Definitive Proxy Statement

STATE OF WISCONSIN INVESTMENT BOARD

ANSARY HUSHANG

ANSARY NINA

ANSARY HUSHANG

ANSARY NADER

ANSARY NINA

ANSARY NINA

ANSARY HUSHANG

STATE OF WISCONSIN INVESTMENT BOARD

ANSARY HUSHANG

ANSARY FAMILY TRUST

ANSARY NADER

ANSARY NINA