ONI SYSTEMS CORP

Q: Mar 31 2002

FY: Mar 19 2002

Q: Sep 30 2001

Q: Jun 30 2001

Q: Mar 31 2001

FY: Dec 31 2000

Q: Sep 30 2000

Q: Jun 30 2000

5,7

Other events

5

5

5

5

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

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Definitive Proxy Statement

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

CIENA CORP

CIENA CORP

KLEINER PERKINS CAUFIELD & BYERS VIII LP

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

MOHR DAVIDOW VENTURES V LP

PRICE T ROWE ASSOCIATES INC /MD/

ONI SYSTEMS CORP

ONI SYSTEMS CORP

ONI SYSTEMS CORP

ONI SYSTEMS CORP

ONI SYSTEMS CORP

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

PRICE T ROWE ASSOCIATES INC /MD/

MOHR DAVIDOW VENTURES V LP

KLEINER PERKINS CAUFIELD & BYERS VIII LP