JOINT FILING AGREEMENT
Exhibit 99.4
In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, each
of the undersigned agrees to the joint filing of a Statement on Schedule 13D (including amendments
thereto) with respect to the shares of Common Stock, par value $0.01 per share, of TD Ameritrade
Holding Corporation, a Delaware corporation, and further agrees that this Joint Filing Agreement be
included as an exhibit to such filings provided that, as contemplated by Rule 13d-1(k)(l)(ii), no
person shall be responsible for the completeness or accuracy of the information concerning the
other persons making the filing, unless such person knows or has reason to believe that such
information is inaccurate. This Joint Filing Agreement may be executed in any number of
counterparts, all of which together shall constitute one and the same instrument.
Date:
March 8, 2006
/s/ J. Xxx Xxxxxxxx
J. Xxx Xxxxxxxx, individually
/s/ Xxxxxxx X. Xxxxxxxx
Xxxxxxx X. Xxxxxxxx, individually
J. XXX XXXXXXXX 1996 DYNASTY TRUST
| By: | /s/ Xxxxx X. Xxxxxxxx | |||
| Xxxxx X. Xxxxxxxx, trustee | ||||
| XXXXXXX X. XXXXXXXX 1994 DYNASTY TRUST |
||||
| By: | /s/ Xxxxx X. Xxxxxxxx | |||
| Xxxxx X. Xxxxxxxx, trustee | ||||
| XXXXXXXX GRANDCHILDREN’S TRUST |
||||
| By: | /s/ Xxxxx X. Xxxxx | |||
| Bessemer Trust Company, N.A., trustee | ||||
| Name: | Xxxxx X. Xxxxx | |||
| Title: | Managing Director | |||
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