CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 39,781	$ 49,351
Marketable securities	185,125	212,798
Prepaid expenses and other current assets	4,284	5,137
Total current assets	229,190	267,286
Property and equipment, net	1,730	1,080
Right-of-use assets	551	119
Other assets	50	50
Total assets	231,522	268,535
Current liabilities:
Accounts payable	5,764	5,335
Accrued expenses	5,854	5,545
Operating lease liability, current	138	171
Total current liabilities	11,756	11,051
Share repurchase liability	15	42
Operating lease liability, net of current	512	0
Total liabilities	12,283	11,093
Commitments and contingencies (Note 9)
Stockholders' equity (deficit)
Undesignated preferred stock, $0.0001 par value, 10,000,000 shares authorized and zero issued and outstanding as of June 30, 2025 and December 31, 2024	0	0
Common stock, $0.0001 par value, 500,000,000 shares authorized and 33,592,226 issued and outstanding as of June 30, 2025 and 500,000,000 shares authorized and 33,421,525 issued and outstanding as of December 31, 2024	5	5
Additional paid-in-capital	400,019	394,887
Accumulated deficit	(180,796)	(137,505)
Accumulated other comprehensive income	11	55
Total stockholders' equity	219,239	257,442
Total liabilities and stockholders' equity	$ 231,522	$ 268,535

Share repurchase liability.

No definition available.

Name:	mbx_ShareRepurchaseLiability
Namespace Prefix:	mbx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).