STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net loss	$ (37,517)	$ (17,579)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	4,300	2,638
Depreciation expense	227	266
Non cash interest expense	999	0
Loss on disposal of fixed assets	141	0
Amortization of operating lease right-of-use asset	153	143
Amortization of finance lease right-of-use asset	294	0
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(1,612)	2,891
Collaboration revenue receivable, billed and unbilled	(15)	314
Accounts receivable	(5,777)	0
Accounts payable	(1,330)	1,502
Accrued expenses and other current liabilities	3,990	713
Operating lease liability	(158)	(147)
Net cash used in operating activities	(36,305)	(9,259)
Cash flows from investing activities
Purchases of property and equipment	(11)	(70)
Net cash used in investing activities	(11)	(70)
Cash flows from financing activities
Proceeds from exercise of stock options	154	7
Payment of debt amendment fees	(1,122)	0
Repayment of financing lease	(333)	0
Proceeds from issuance of common stock and pre-funded warrants, net of issuance costs	0	30,301
Payment of equity issuance costs	0	(112)
Net cash (used in) provided by financing activities	(1,301)	30,196
Net (decrease) increase in cash and cash equivalents	(37,617)	20,867
Cash and cash equivalents at the beginning of the period	69,547	34,273
Cash and cash equivalents at the end of the period	31,930	55,140
Supplemental disclosure of noncash investing and financing activities:
Property and equipment purchases in accounts payable or accrued expenses and other current liabilities at period end	14	0
Cash paid for interest	3,688	0
Right-of-use asset obtained in exchange for lease obligation	$ 1,413	$ 0