UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)

February 27, 2006

TIBCO Software Inc.

(Exact name of registrant as specified in its charter)

Delaware	000-26579	77-0449727
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

3303 Hillview Avenue

Palo Alto, California 94304-1213

(Address of principal executive offices, including zip code)

(650) 846-1000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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Item 1.01. Entry into a Material Definitive Agreement

On February 27, 2006, TIBCO Software Inc. amended its 1998 Director Option Plan to reduce the term of future option grants from ten years to seven years.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

TIBCO Software Inc.
By:	/s/ William R. Hughes
	William R. Hughes Executive Vice President, General Counsel and Secretary

Date: March 2, 2006

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