JOINT FILING AGREEMENT
Exhibit 99.1
The undersigned hereby agree that the statement on Schedule 13G with respect to the ordinary shares
of SAP Aktiengesellschaft Systeme, Anwendungen, Produkte in der Datenverarbeitung is, and any
amendment thereto signed by each of the undersigned shall be, filed on behalf of each of the
undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) promulgated under
the Securities Exchange Act of 1934, as amended. The undersigned hereby further agree that this
Joint Filing Agreement be included as an exhibit to such statement and any such amendment. This
Joint Filing Agreement may be executed in any number of counterparts, all of which taken together
shall constitute one and the same instrument.
Dated: February 14, 2006
| /s/ Xxxxxxx Xxxx | ||||
| Xxxxxxx Xxxx | ||||
| Xxxxxxx Xxxx Stiftung GmbH |
||||
| /s/ Xxxxxxx Xxxx | ||||
| Name: | Xxxxxxx Xxxx | |||
| Title: | Managing Director | |||
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