CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities
Net loss	$ (26,518)	$ (26,773)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	435	(3)
Non-cash lease expense	948	902
Stock-based compensation	7,616	2,912
Non-cash interest expense	1,753	1,044
Other, net	(1,265)	499
Changes in operating assets and liabilities:
Accounts receivable	(6,131)	(4,387)
Inventory	(29,371)	(16,601)
Prepaid commercial manufacturing	13,406	(268)
Prepaid expenses and other assets	(5,450)	(774)
Accounts payable	6,139	(346)
Accrued compensation and benefits	(5,870)	(2,474)
Operating lease liabilities	(1,068)	(937)
Accrued and other liabilities	6,791	(1,396)
Deferred revenue	2,863	3,807
Net cash used in operating activities	(35,722)	(44,795)
Investing activities
Proceeds from maturities and redemptions of investments	31,602	11,000
Purchases of investments	(34,024)	(20,763)
Purchases of property and equipment	(150)	(14)
Net cash used in investing activities	(2,572)	(9,777)
Financing activities
Proceeds from 2022 Loan, net of issuance costs	49,750	0
Proceeds from issuance of common stock in at the market offering, net of issuance costs	0	50,719
Proceeds from issuance of common stock under equity incentive and stock purchase plans	3,221	200
Net cash provided by financing activities	52,971	50,919
Net increase (decrease) in cash and cash equivalents	14,677	(3,653)
Cash and cash equivalents at beginning of period	21,470	96,140
Cash and cash equivalents at end of period	36,147	92,487
Supplementary disclosure of cash flow information:
Cash paid for interest	2,095	860
Cash paid for income taxes	$ 1	$ 0