December 31,

(in thousands, except per share amounts)

2015

2014

Assets

Current assets

Cash and cash equivalents

$

$

Investments

Accounts receivable

Inventory

Prepaid expenses and other current assets

Total current assets

Property and equipment, net

Long-term restricted cash

 —

Other long-term assets

Total assets

$

$

Liabilities and Stockholders’ Equity

Current liabilities

Accounts payable

$

$

Accrued expenses

Deferred service revenue, current

Deferred contractual revenue, current

Other liabilities, current

Total current liabilities

Deferred service revenue, non-current

Deferred contractual revenue, non-current

Other liabilities, non-current

Notes payable

Financing derivative

Total liabilities

Commitments and contingencies

Stockholders’ equity

Preferred Stock, $0.001 par value:

Authorized 50,000 shares; No shares issued or outstanding

 —

 —

Common Stock, $0.001 par value:

Authorized 1,000,000 shares; Issued and outstanding 79,983 and 73,927 shares at December 31, 2015 and 2014, respectively

Additional paid-in-capital

Accumulated other comprehensive income (loss)

Accumulated deficit

Total stockholders’ equity

Total liabilities and stockholders’ equity

$

$

Years ended December 31,

(in thousands, except per share amounts)

2015

2014

2013

Revenue:

Product revenue

$

$

$

Service and other revenue

Contractual revenue

Total revenue

Cost of Revenue:

Cost of product revenue

Cost of service and other revenue

Total cost of revenue

Gross profit

Operating Expense:

Research and development

Sales, general and administrative

Gain on lease amendments

 —

 —

Total operating expense

Operating loss

Interest expense

Other income (expense), net

Net loss

Other comprehensive loss:

Unrealized loss on investments

Comprehensive loss

$

$

$

Net loss per share:

Basic and diluted net loss per share

$

$

$

Shares used in computing basic and diluted net loss per share

Years Ended December 31,

(in thousands)

2015

2014

2013

Cash flows from operating activities

Net loss

$

$

$

Adjustments to reconcile net loss to net cash used in operating activities

Depreciation and amortization

Amortization of debt discount and financing costs

Stock-based compensation

Non-cash portion of gain on lease amendments

 —

 —

Other items

Changes in assets and liabilities

Accounts receivable

Inventory

Prepaid expenses and other assets

Accounts payable

Accrued expenses 

Deferred service revenue

Deferred contractual revenue

Other liabilities

Net cash used in operating activities

Cash flows from investing activities

Purchase of property and equipment

Proceeds from disposal of property and equipment

 —

 —

Long-term restricted cash 

 —

 —

Purchase of investments

Sales of investments

 —

Maturities of investments

Net cash provided by (used in) investing activities

Cash flows from financing activities

Proceeds from issuance of common stock from equity plans

Proceeds from issuance of common stock from at-the-market equity offering, net of issuance costs

Proceeds from issuance of debt agreement, net of issuance costs

 —

 —

Net cash provided by financing activities

Net increase (decrease) in cash and cash equivalents

Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

$

$

$

Supplemental disclosure of cash flow information

Interest paid

$

$

$

Supplemental disclosure of non-cash investing and financing activities

Inventory transferred to (from) property and equipment

 —