JOINT FILING AGREEMENT
Exhibit 1
The undersigned hereby agree that this statement on Schedule 13D dated September 3,
2008 with respect to the common stock of Boston Private Financial Holdings, Inc. is, and any
amendments hereto signed by each of the undersigned shall be, filed on behalf of each of us
pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange
Act of 1934, as amended.
Dated: September 3, 2008
| DBD CAYMAN, LTD. |
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| By: | /s/ Xxxxxx X. X’Xxxxxxx | ||||
| Name: | Xxxxxx X. X’Xxxxxxx | ||||
| Title: | Director | ||||
| TCG HOLDINGS CAYMAN II, L.P. |
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| By: | DBD CAYMAN, LTD., | ||||
| its general partner | |||||
| By: | /s/ Xxxxxx X. X’Xxxxxxx | ||||
| Name: | Xxxxxx X. X’Xxxxxxx | ||||
| Title: | Director | ||||
| TC GROUP CAYMAN INVESTMENT HOLDINGS, L.P. |
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| By: TCG HOLDINGS CAYMAN II, L.P., | |||||
| its general partner | |||||
| By: | DBD CAYMAN, LTD., | ||||
| its general partner | |||||
| By: | /s/ Xxxxxx X. X’Xxxxxxx | ||||
| Name: | Xxxxxx X. X’Xxxxxxx | ||||
| Title: | Director | ||||
| CARLYLE FINANCIAL SERVICES, LTD. |
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| By: | /s/ Xxxxxx X. X’Xxxxxxx | |||
| Name: | Xxxxxx X. X’Xxxxxxx | |||
| Title: | Managing Director | |||
| TCG FINANCIAL SERVICES L.P. |
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| By: | CARLYLE FINANCIAL SERVICES, LTD., | |||
| its general partner | ||||
| By: | /s/ Xxxxxx X. X’Xxxxxxx | |||
| Name: | Xxxxxx X. X’Xxxxxxx | |||
| Title: | Managing Director | |||
| BP HOLDCO, L.P. |
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| By: | TCG FINANCIAL SERVICES L.P., | |||
| its general partner | ||||
| By: | CARLYLE FINANCIAL SERVICES, LTD., | |||
| its general partner | ||||
| By: | /s/ Xxxxxx X. X’Xxxxxxx | |||
| Name: | Xxxxxx X. X’Xxxxxxx | |||
| Title: | Managing Director | |||
