| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||||||
Net loss | ||||||||||||
-6,748 | -7,235 | -7,749 | -7,172 | -7,213 | -7,034 | -7,434 | -9,491 | -7,588 | - | - | - | - |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||||
Depreciation and amortization expense | ||||||||||||
70 | 75 | 22 | 27 | 31 | 49 | 87 | 36 | 46 | 44 | 40 | 23 | 22 |
Net amortization of premiums and discounts on investments | ||||||||||||
30 | 61 | 76 | 60 | 34 | 69 | 91 | 49 | 44 | - | - | - | - |
Net loss | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -4,557 |
Stock-based compensation expense | ||||||||||||
505 | 479 | 614 | 460 | 563 | 591 | 588 | 1,334 | 767 | 665 | 615 | 272 | 197 |
Change in deferred rent | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | 4 | 7 |
Gain on sale of property and equipment | ||||||||||||
66 | - | - | - | - | - | - | - | - | - | - | - | - |
Changes in operating assets and liabilities: | ||||||||||||
Prepaid expenses and other current assets | ||||||||||||
-280 | -665 | 900 | -79 | 50 | -198 | 456 | -227 | 86 | -145 | 618 | -39 | 330 |
Other assets | ||||||||||||
-167 | - | - | - | -533 | - | - | - | - | - | - | - | - |
Other assets | ||||||||||||
- | - | - | - | - | - | 0 | -4 | -11 | -114 | 26 | -63 | 4 |
Accounts payable | ||||||||||||
-365 | -880 | 628 | 847 | -872 | 174 | -22 | -218 | 196 | -8 | 267 | 329 | -829 |
Operating lease liabilities | ||||||||||||
-104 | -103 | -94 | -88 | -85 | - | - | - | - | - | - | - | - |
Accrued expenses and other current liabilities | ||||||||||||
619 | 284 | 418 | 57 | -374 | -572 | 450 | 712 | -231 | 131 | 833 | 696 | -444 |
Net cash used in operating activities | ||||||||||||
-5,672 | -6,305 | -6,976 | -5,692 | -7,501 | -6,663 | -6,878 | -7,456 | -6,929 | - | - | - | - |
Cash flows from investing activities: | ||||||||||||
Net cash used in operating activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -5,952 |
Purchases of property and equipment | ||||||||||||
- | 15 | 5 | 4 | 127 | 1,932 | 2,278 | 206 | 7 | 68 | 27 | 9 | 38 |
Proceeds from sale of property and equipment | ||||||||||||
66 | - | - | - | - | - | - | - | - | - | - | - | - |
Purchases of investments | ||||||||||||
- | - | - | - | - | 4,963 | 5,468 | 13,215 | 7,548 | 18,926 | 43,383 | 1,482 | 7,265 |
Proceeds from sales or maturities of investments | ||||||||||||
10,992 | 7,506 | 6,968 | 2,000 | 8,100 | 15,200 | 9,150 | 26,000 | 9,955 | - | - | - | - |
Net cash provided by (used in) investing activities | ||||||||||||
11,058 | 4,764 | 3,737 | -19,288 | 7,973 | 8,305 | 1,404 | 12,579 | 2,400 | - | - | - | - |
Cash flows from financing activities: | ||||||||||||
Proceeds from exercise of stock options | ||||||||||||
- | 0 | 0 | 0 | 165 | 14 | 0 | 12 | 16 | 11 | 20 | 5 | 75 |
Net cash provided by (used in) investing activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -7,303 |
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | -1 | -22 | 494 |
Net cash provided by financing activities | ||||||||||||
- | -15 | -51 | 23,865 | 165 | 1,277 | 1,210 | 12 | 16 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 569 |
Net decrease in cash, cash equivalents and restricted cash | ||||||||||||
5,386 | -1,556 | -3,290 | -1,115 | 637 | 2,919 | -4,264 | 5,135 | -4,513 | -1,565 | 4,031 | 1,368 | -12,686 |
Supplemental disclosure of non-cash financing activities: | ||||||||||||
Accretion of redeemable convertible preferred stock to redemption value | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | 21 | 20 |
Issuance costs for redeemable convertible preferred stock included in accounts payable and accrued expenses | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 23 |
Deferred offering costs included in accounts payable and accrued expenses | ||||||||||||
- | - | - | - | - | - | - | - | - | - | -1,548 | 1,598 | 205 |