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v3.20.2

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net loss | $ (53,577) | $ (77,073)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 415 | 374
Stock-based compensation | 8,521 | 9,654
Accretion/amortization of investments, net | 239 | (2,449)
Non-cash interest expense | 0 | 503
Changes in operating assets and liabilities: |  |
Prepaid expenses and other assets | (2,902) | 2,099
Accounts payable and other liabilities | (4,431) | 13,180
Net cash used in operating activities | (51,735) | (53,712)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Acquisition of investments | (156,572) | (175,049)
Sales and maturities of investments | 247,707 | 303,146
Purchases of property and equipment | (258) | (701)
Net cash provided by investing activities | 90,877 | 127,396
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from issuance of common stock, upon the exercise of stock options | 370 | 1,243
Payments on notes payable | (1,375) | (5,625)
Net cash used in financing activities | (1,005) | (4,382)
Net increase in cash, cash equivalents, and restricted cash | 38,137 | 69,302
Cash, cash equivalents and restricted cash, beginning of period | 171,077 | 113,656
Cash, cash equivalents and restricted cash, end of period | 209,214 | 182,958
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION |  |
Interest paid | 4 | 384
Non-cash investing and financing activities: |  |
Amounts accrued for property and equipment | $ 165 | $ 82

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