EX-99 3 lemke991.txt ADDITIONAL EXHIBITS Exhibit 99.1 Notes to Footnote 2: The amount reported includes the shares of Common Stock issued upon conversion of the number of shares of Series F-2 Convertible Preferred Stock held by the persons listed in the table below. Each share of Series F-2 Convertible Preferred Stock automatically converted into approximately 0.2056 shares of Common Stock upon consummation of Acusphere's initial public offering on October 14, 2003. Mr. Lemke is a managing partner for Thomas Weisel Capital Partners and as such may be deemed to share voting and investment power with respect to these securities. The reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary ownership therein.

Notes to Footnote 3: The amount reported includes the shares of Common Stock issued upon conversion of the number of shares of Series I-2 Convertible Preferred Stock held by the persons listed in the table below. Each share of Series I-2 Convertible Preferred Stock automatically converted into approximately 0.5615 shares of Common Stock upon consummation of Acusphere's initial public offering on October 14, 2003. Mr. Lemke is a managing partner for Thomas Weisel Capital Partners and as such may be deemed to share voting and investment power with respect to these securities. The reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary ownership therein.

Notes to Footnote 4: The amount reported includes the shares of Common Stock issued upon conversion of the number of shares of Series J-2 Convertible Preferred Stock held by the persons listed in the table below. Each share of Series J-2 Convertible Preferred Stock automatically converted into approximately 0.1667 shares of Common Stock upon consummation of Acusphere's initial public offering on October 14, 2003. Mr. Lemke is a managing partner for Thomas Weisel Capital Partners and as such may be deemed to share voting and investment power with respect to these securities. The reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary ownership therein.

Notes to Footnote 5: The amount reported includes the shares of Common Stock issued upon conversion of the number of shares of Series J-3 Convertible Preferred Stock held by the persons listed in the table below. Each share of Series J-3 Convertible Preferred Stock automatically converted into approximately 0.3333 shares of Common Stock upon consummation of Acusphere's initial public offering on October 14, 2003. Mr. Lemke is a managing partner for Thomas Weisel Capital Partners and as such may be deemed to share voting and investment power with respect to these securities. The reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary ownership therein.

Notes to Footnote 6: The amount reported includes the shares of Common Stock issued upon conversion of the Series J-2 Convertible Preferred Stock issued upon conversion of the 10% Secured Convertible Promissory Note held by the persons listed in the table below, which conversion occurred automatically upon consummation of Acusphere's initial public offering on October 14, 2003. The conversion price for the conversion of 10% Secured Convertible Promissory Notes into shares of Series J-2 Convertible Preferred Stock was $1.41 except for the Note held by Thomas Weisel Capital Partners Employee Fund, L.P. which has a conversion price of $2.33 per share. Each share of Series J-2 Convertible Preferred Stock converted into approximately 0.1667 shares of Common Stock. Mr. Lemke is a managing partner for Thomas Weisel Capital Partners and as such may be deemed to share voting and investment power with respect to these securities. The reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary ownership therein.

LEMKE VON AMMON DEREK 4