EXHIBIT 99.1

Information Regarding Joint Filers

Designated Filer of Form 3: Bank of America Ventures

Item 2. Date of Event Requiring Statement: October 7, 2003

Item 4. Issuer Name and Ticker Symbol: Acusphere, Inc. (ACUS)

 

Designated Filer:

Ownership Form

Nature of Indirect

Beneficial Ownership

Bank of America Ventures

950 Tower Lane, Suite 700

Foster City, CA 94404

 

 

Direct

 

Joint Filers:

   

Bank of America Corporation

100 North Tryon Street

Bank of America Plaza

Charlotte, NC 28255

Indirect

Indirect 100% Owner of Reported Shares, as 100% Parent of Bank of America, N.A.

Bank of America, N.A.

101 South Tryon Street

Bank of America Plaza

Charlotte, NC 28255

 

Indirect

Indirect 100% Owner of Reported Shares, as 100% Parent of Bank of America Ventures

NB Holdings Corporation

100 North Tryon Street

Bank of America Plaza

Charlotte, NC 28255

Indirect

 

SIGNATURES

BANK OF AMERICA CORPORATION

By: /s/ Pamela Reed Date: October 7, 2003

Title: Assistant Vice President

BANK OF AMERICA, N.A.

By: /s/ Pamela Reed Date: October 7, 2003

Title: Assistant Vice President

NB HOLDINGS CORPORATION

By: /s/ Rachel Cummings Date: October 7, 2003

Title: Senior Vice President