CUSIP NO. 00000X000 13G PAGE 8 OF 8 PAGES
--------- ------------------
Exhibit I
AGREEMENT
Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934,
as amended, the undersigned hereby agree that only one statement containing the
information required by Schedule 13G need be filed with respect to the ownership
by each of the undersigned of the shares of Common Stock of Centene Corporation.
EXECUTED as a sealed instrument this 13th day of February, 2002.
GREYLOCK LIMITED PARTNERSHIP
By: /s/ Xxxxxx X. Xxxxxxxxx
-----------------------------
Xxxxxx X. Xxxxxxxxx
Co-Managing General Partner
By: /s/ Xxxxx X. XxXxxxx
-----------------------------
Xxxxx X. XxXxxxx
Co-Managing General Partner
/s/ Xxxxxx X. Xxxxxxxxx
-------------------------------------
Xxxxxx X. Xxxxxxxxx
/s/ Xxxxx X. XxXxxxx
-------------------------------------
Xxxxx X. XxXxxxx