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v3.20.2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Cash flows from operating activities: |  |  |  |
Net loss | $ (13,010,000) | $ (23,924,000) | $ (61,169,000) | $ (42,479,000)
Adjustments to reconcile net loss to cash used in operating activities: |  |  |  |
Non-cash licensed technology impairment charge |  |  | 32,916,000 |
Depreciation and amortization | 834,000 | 2,057,000 | 2,899,000 | 3,715,000
Stock option-based compensation expense | 1,578,000 | 1,678,000 | 2,834,000 | 3,781,000
Restricted stock-based compensation expense |  |  | 651,000 | 250,000
Non-cash interest expense |  |  | 600,000 |
Accretion and interest on short-term investments |  |  | (156,000) | (829,000)
Accretion of right-of-use lease assets |  |  | 496,000 | 382,000
Non-cash loss on arbitration ruling on licensing agreement |  |  |  | 367,000
Change in operating assets and liabilities: |  |  |  |
Receivables |  |  |  | 41,000
Prepaid expenses and other current assets |  |  | 2,208,000 | 1,459,000
Other assets |  |  |  | (1,000)
Accounts payable, accrued expenses and lease liabilities |  |  | (4,786,000) | 2,994,000
Change in payable to licensor |  |  | 800,000 |
Net cash used in operating activities |  |  | (22,707,000) | (30,320,000)
Cash flows from investing activities: |  |  |  |
Capital expenditures |  |  | (1,032,000) | (5,250,000)
Acquisition of licensed technology |  |  |  | (200,000)
Purchases of short-term investments |  |  | (123,062,000) |
Proceeds from maturities of short-term investments |  |  | 30,014,000 | 47,144,000
Net cash (used in) provided by investing activities |  |  | (94,080,000) | 41,694,000
Cash flows from financing activities: |  |  |  |
Proceeds from loan payable |  |  | 1,758,000 |
Proceeds from open market sales of common stock |  |  |  | 12,622,000
Proceeds from exercise of stock options |  |  | 175,000 | 413,000
Net cash provided by financing activities |  |  | 1,933,000 | 13,035,000
Net (decrease) increase in cash, cash equivalents and restricted cash |  |  | (114,854,000) | 24,409,000
Cash, cash equivalents and restricted cash at beginning of period |  |  | 130,368,000 | 19,310,000
Cash, cash equivalents and restricted cash at end of period | 15,514,000 | 43,719,000 | 15,514,000 | 43,719,000
Supplemental cash flow information: |  |  |  |
Cash and cash equivalents | 14,542,000 | 42,609,000 | 14,542,000 | 42,609,000
Restricted cash | 972,000 | 1,110,000 | 972,000 | 1,110,000
Total cash, cash equivalents and restricted cash | $ 15,514,000 | $ 43,719,000 | 15,514,000 | 43,719,000
Shares returned in connection with arbitration ruling on licensing agreement |  |  |  | 1,472,000
Cash paid for interest |  |  |  |
Cash paid for taxes |  |  |  |

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