| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 | Dec'16 | Sep'16 | Jun'16 | Mar'16 | Dec'15 | Sep'15 | Jun'15 | Mar'15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||||||||||||||
Net income (loss) | ||||||||||||||||||||
12,205 | -35,456 | -23,697 | -28,961 | -14,124 | -32,233 | -23,431 | -13,447 | -15,493 | - | - | - | - | - | - | - | - | - | - | - | - |
Net loss | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | -10,247 | -25,216 | -8,257 | -14,033 | -14,662 | -14,176 | -16,029 | -11,487 | -11,870 | -5,806 | -6,211 |
Adjustments to reconcile net income (loss) to net cash used in operating activities: | ||||||||||||||||||||
Loss/(gain) on disposal of property and equipment | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | 0 | 0 | 1 | - | - | - | - | - | - | - | - |
Amortization of intangible assets | ||||||||||||||||||||
36 | 37 | 36 | 37 | 36 | 37 | 36 | 37 | 36 | - | - | - | - | - | - | - | - | - | - | - | - |
Depreciation and amortization | ||||||||||||||||||||
601 | - | - | - | 617 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Depreciation and amortization | ||||||||||||||||||||
- | - | - | - | - | - | - | 426 | 376 | - | 477 | 369 | 395 | 490 | 443 | 445 | 355 | 329 | 307 | 302 | 268 |
Amortization of debt discount | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 57 | 10 | 13 |
Accretion of discounts on investments | ||||||||||||||||||||
127 | 265 | 556 | 694 | 713 | 587 | 471 | 382 | 261 | 21 | -55 | -134 | -203 | -406 | -439 | -467 | -350 | -370 | -381 | -311 | -124 |
Stock-based compensation expense | ||||||||||||||||||||
4,013 | 4,111 | 4,343 | 5,454 | 5,192 | 4,616 | 4,413 | 4,161 | 3,688 | 2,750 | 2,780 | 3,010 | 2,747 | 2,622 | 2,720 | 2,391 | 2,362 | 1,921 | 1,344 | 546 | 175 |
Issuance of common stock in connection with UCSB sublicense fee | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | 159 | - | - | - | - |
Deferred income taxes | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | -520 | -19 | 25 | 1 | 0 | 0 | 3 | 3 | - | - | - | - |
Changes in operating assets and liabilities | ||||||||||||||||||||
Accounts receivable | ||||||||||||||||||||
129,997 | 6 | -9,997 | 9,960 | -53 | 41 | -25,081 | 25,056 | -10,058 | 9,956 | 25 | -55 | -1,946 | 1,919 | -45 | -31 | -56 | -1,204 | -141 | 216 | -2 |
Related party accounts receivable | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | -68 | 41 | -28 | -99 | -53 | 94 | -45 | -214 | - | -84 | 205 | -1,663 |
Prepaid expenses and other current assets | ||||||||||||||||||||
14,957 | -1,881 | 1,527 | -906 | -814 | 1,361 | 1,660 | 756 | 1,122 | -496 | 269 | 461 | 222 | -505 | 990 | -27 | 1,139 | 1,095 | -283 | 269 | 410 |
Other assets | ||||||||||||||||||||
-636 | - | - | - | - | 0 | 0 | 0 | 20 | -1,716 | -169 | 487 | -220 | 2,747 | -42 | -41 | -55 | -7 | -71 | -28 | -22 |
Accounts payable | ||||||||||||||||||||
52 | -526 | 149 | -5,159 | 5,162 | -2,534 | 3,224 | -1,544 | 1,115 | 1,054 | -3,574 | 2,904 | -2,825 | 5,824 | -853 | -3,452 | 246 | 2,195 | 1,599 | -283 | -567 |
Accrued liabilities, income tax payable and other long-term liabilities | ||||||||||||||||||||
-2,615 | 9,380 | -2,000 | -13,499 | -6,605 | 14,281 | -751 | 10,158 | 1,145 | 5,033 | 4,357 | 1,576 | -1,809 | - | - | - | - | - | - | - | - |
Accrued liabilities and other liabilities | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | -134 | 1,762 | 2,696 | -371 | - | - | - | - |
Deferred revenue | ||||||||||||||||||||
80,416 | -8,566 | -10,705 | 991 | -29,461 | -11,382 | -12,466 | -213 | -14,134 | - | - | - | - | - | - | - | - | - | - | - | - |
Accrued liabilities | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | -169 |
Deferred revenue | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | -10,101 | 191,258 | -11,583 | - | -3,034 | 27,236 | 8,199 | -1,533 | -1,532 | -1,533 | -1,532 |
Net cash used in operating activities | ||||||||||||||||||||
-49,737 | -29,479 | -23,319 | -48,653 | -39,029 | -28,742 | -5,551 | -26,616 | -14,612 | - | - | - | - | - | - | - | - | - | - | - | - |
Cash flows from investing activities: | ||||||||||||||||||||
Net cash used in operating activities | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -19,086 | - | -14,182 | 15,754 | -5,540 | -8,169 | -7,766 | -6,111 | -5,369 |
Purchases of property and equipment | ||||||||||||||||||||
1,049 | 703 | 628 | 331 | 1,835 | 1,119 | 1,050 | 868 | 751 | 234 | 57 | 324 | 944 | 602 | 863 | 384 | 327 | 182 | 363 | 794 | 255 |
Purchases of short-term investments | ||||||||||||||||||||
44,707 | 25,460 | 47,889 | 39,326 | 62,317 | 42,858 | 62,113 | 51,498 | 48,132 | - | - | - | - | - | - | - | - | - | - | - | - |
Maturities of short-term investments | ||||||||||||||||||||
48,197 | 79,020 | 87,027 | 46,597 | 45,546 | 59,819 | 59,983 | 69,013 | 25,500 | - | - | - | - | - | - | - | - | - | - | - | - |
Purchases of short-term investments | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | 0 | 14,089 | 40,094 | - | 23,577 | 64,096 | 33,844 | 121,348 | 39,590 | 38,175 | 51,788 |
Maturities of short-term investments | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | 16,000 | 27,750 | 40,250 | - | 35,750 | 43,000 | 47,750 | - | - | - | - |
Net cash provided by (used in) investing activities | ||||||||||||||||||||
2,441 | 52,857 | 38,510 | 6,940 | -18,606 | 15,842 | -3,180 | 16,647 | -23,383 | - | - | - | - | - | - | - | - | - | - | - | - |
Cash flows from financing activities: | ||||||||||||||||||||
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | -250 | 73,489 | 1,191 |
Net cash used in investing activities | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -788 | - | 11,310 | -21,480 | 13,579 | -50,847 | 1,297 | -28,969 | -52,043 |
Proceeds from employee stock purchase plan and exercise of stock options | ||||||||||||||||||||
2,157 | 401 | 63 | 698 | 465 | 724 | 980 | 722 | 2,602 | 1,122 | 1,160 | 666 | 891 | 501 | 251 | 130 | 48 | - | - | - | - |
Repayment of notes payable | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | -6,094 | 2,309 | 362 | 356 |
Payment of deferred offering costs | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | 12 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||||||||||
2,157 | 401 | 63 | 698 | 465 | 724 | 135,576 | 722 | 2,602 | - | - | - | - | - | - | - | - | - | - | - | - |
Net decrease in cash, cash equivalents and restricted cash | ||||||||||||||||||||
-45,139 | 23,779 | 15,254 | -41,015 | -57,170 | -12,176 | 126,845 | -9,247 | -35,393 | - | - | - | - | - | - | - | - | - | - | - | - |
Net cash provided by financing activities | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 891 | - | 251 | 208 | 36 | 82,647 | -3,182 | 73,103 | 835 |
Net increase in cash, cash equivalents and restricted cash | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | 11,365 | 187,198 | -18,983 | - | -2,621 | -5,518 | 8,075 | 23,631 | -9,651 | 38,023 | -56,577 |
Supplemental disclosures of cash flow information: | ||||||||||||||||||||
Cash paid for interest | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 61 | 75 | 84 |
Supplemental disclosures of noncash investing and financing items: | ||||||||||||||||||||
Purchases of property and equipment in accounts payable and accrued liabilities | ||||||||||||||||||||
- | 135 | -119 | 167 | 245 | 794 | -593 | 435 | 391 | - | - | - | 230 | 415 | -88 | 120 | 26 | -14 | 44 | -393 | 463 |
Right of use assets obtained in exchange for operating lease obligations | ||||||||||||||||||||
- | - | - | - | 28,054 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Accretion to redemption value and cumulative dividends on preferred stock | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 558 | 2,958 | 1,757 | 1,432 |