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v3.20.2

Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
Operating activities |  |
Net income (loss) | $ 27,416 | $ (40,955)
Adjustments to reconcile net income (loss) to net cash used in operating activities: |  |
Depreciation and amortization | 3,125 | 3,560
Amortization of premium (accretion of discount) on marketable securities | 293 | (1,328)
Stock-based compensation | 8,830 | 7,629
Unrealized gain on equity securities | (78,638) |
Remeasurement of liability awards | 3,165 | 15
Other | 558 | 243
Changes in operating assets and liabilities: |  |
Accounts receivable | (1,185) | (5,042)
Prepaid expenses and other assets | 823 | 92
Accounts payable | (716) | 1,477
Accrued compensation | (127) | (1,589)
Other liabilities | (747) | (180)
Deferred rent | (129) | (42)
Deferred revenue | (11,591) | (15,747)
Net cash used in operating activities | (48,923) | (51,867)
Investing activities |  |
Purchases of marketable securities | (113,999) | (191,717)
Maturities of marketable securities | 82,300 | 114,076
Sales of marketable securities | 22,000 | 20,000
Purchases of equipment and leasehold improvements | (5,504) | (1,432)
Net cash used in investing activities | (15,203) | (59,073)
Financing activities |  |
Proceeds from sales of common stock, net of issuance costs | 108,250 |
Proceeds from debt refinancing | 25,000 |
Payment of debt | (10,000) | (3,500)
Proceeds from exercise of common stock options | 172 | 133
Taxes paid related to net share settlement of restricted stock units | (314) | (297)
Proceeds from employee stock purchase plan | 1,285 | 1,260
Net cash provided by (used in) financing activities | 124,393 | (2,404)
Net increase (decrease) in cash, cash equivalents and restricted cash | 60,267 | (113,344)
Cash, cash equivalents and restricted cash at beginning of period | 4,975 | 125,313
Cash, cash equivalents and restricted cash at end of period | 65,242 | 11,969
Supplemental disclosure of cash flow information: |  |
Cash paid for interest | 1,165 | 898
Supplemental disclosure of non-cash investing and financing information: |  |
Purchases of equipment included in accounts payable | 11 | 11
Embedded interest associated with program fees | 1,544 | $ 2,477
Warrants issued to lenders | $ 619 |

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