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v3.10.0.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Operating Activities |  |  |  |
Net loss |  | $ (30,055) |  | $ (21,561)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |
Stock-based compensation expense |  | 2,606 |  | 863
Depreciation and amortization |  | 149 |  | 173
Loss on disposal of property and equipment |  | 116 |  | 18
Changes in operating assets and liabilities: |  |  |  |
Prepaid and other current assets |  | (2,895) |  | (351)
Accounts receivable |  |  |  | 7
Deposits |  |  |  | (128)
Accounts payable |  | 500 |  | (90)
Accrued compensation and other accrued liabilities |  | 850 |  | 1,287
Deferred revenue |  | (6) |  | (118)
Deferred rent |  | 182 |  | (40)
Net cash flows used in operating activities |  | (28,553) |  | (19,940)
Investing Activities |  |  |  |
Proceeds from maturities of short-term investments |  | 127,967 |  | 14,300
Purchase of short-term investments |  | (198,912) |  | (25,472)
Purchases of property and equipment |  | (376) |  | (23)
Net cash flows used in investing activities |  | (71,321) |  | (11,195)
Financing Activities |  |  |  |
Payments for the redemption of redeemable convertible notes |  | (5,082) |  | (14,318)
Proceeds from issuance of common stock, net of issuance costs |  |  |  | 5,336
Proceeds from issuance of preferred stock, common stock and warrants for follow-on offering, net of issuance costs |  |  |  | 18,563
Proceeds from exercise of stock options and issuance of stock grants |  | 107 |  |
Proceeds from exercise of warrants |  | 9,545 |  | 1,817
Net cash flows provided by financing activities |  | 111,332 |  | 21,082
Net increase (decrease) in cash and cash equivalents |  | 11,458 |  | (10,053)
Cash, cash equivalents and restricted cash at beginning of the period |  | 19,805 | [1] | 29,858
Cash, cash equivalents and restricted cash at end of the period | [1] | 31,263 |  | 19,805
Supplemental Disclosure of Non-Cash Investing and Financing Activities: |  |  |  |
Deemed dividend for convertible preferred stock beneficial conversion feature |  |  |  | 3,951
Adoption of ASC 606 |  | 207 |  |
Conversion of redeemable convertible notes to common stock |  | 3 |  |
Unrealized loss/gain on investments |  | 4 |  | 1
Follow-on Offering |  |  |  |
Financing Activities |  |  |  |
Proceeds from issuance of common stock, net of issuance costs |  | $ 106,762 |  | $ 9,684
[1] | The following table provides a reconciliation of cash and restricted cash to amounts reported within the condensed consolidated balance sheets:

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