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v3.23.1

STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Cash flows from operating activities: |  |  |
Net loss | $ (23,945) | $ (23,159) |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation | 253 | 251 |
Stock-based compensation expense | 3,614 | 3,945 |
(Accretion of discount) amortization of premium on investments, net | (861) | 42 |
Changes in operating assets and liabilities: |  |  |
Prepaid expenses and other assets | 1,103 | (536) |
Accounts payable and accrued other liabilities | (792) | (3,261) |
Net cash used in operating activities | (20,628) | (22,718) |
Cash flows from investing activities: |  |  |
Acquisitions of property and equipment | (310) | (723) |
Purchases of investments | (43,387) | (99,937) |
Maturities of investments | 56,475 | 10,000 |
Net cash provided by (used in) investing activities | 12,778 | (90,660) |
Cash flows from financing activities: |  |  |
Proceeds from stock option exercises | 0 | 16 |
Net cash provided by financing activities | 0 | 16 |
Net decrease in cash, cash equivalents and restricted cash | (7,850) | 113,362 |
Cash, cash equivalents and restricted cash at beginning of period | 67,308 | 226,474 | $ 226,474
Cash, cash equivalents and restricted cash at end of period | 59,458 | 113,112 | 67,308
Cash and cash equivalents | 58,990 | 112,644 | 66,840
Restricted cash included in other assets | 468 | 468 |
Total cash, cash equivalents and restricted cash | $ 59,458 | $ 113,112 | $ 67,308

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- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126999549&loc=SL98516268-108586 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)(a)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3044-108585 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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