NxStage Medical Reports First Quarter 20...(ccounts payable ...),Health

Accrued expenses 10,618 9,820

Due to affiliates 774 2,774

Current portion of long-term debt 2,131 54

Total current liabilities 38,882 34,535

Deferred revenue 23,789 19,530

Long-term debt 28,099 25,170

Other long-term liabilities 1,511 1,434

Total liabilities 92,281 80,669

Commitments and contingencies

Stockholders' equity:

Undesignated preferred stock: par

value $0.001, 5,000,000 shares

authorized; zero shares issued and

outstanding, as of March 31, 2008

and December 31, 2007 - -

Common stock: par value $0.001,

100,000,000 shares authorized;

36,793,409 and 36,771,893 shares

issued and outstanding, as of March

31, 2008 and December 31, 2007,

respectively 37 37

Additional paid-in capital 312,660 311,172

Accumulated deficit (195,980) (182,036)

Accumulated other comprehensive

income 507 544

Total stockholders' equity 117,224 129,717

Total liabilities and stockholders'

equity $209,505 $210,386

NxStage Medical, Inc.

Cash Flows from Operating Activities

(Amounts in thousands)

(unaudited)

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