Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 4,088	$ 9,521
Prepaid expenses and other current assets	41	399
Total current assets	4,129	9,920
Long-term restricted cash	10	10
Other long-term assets		13
Total assets	4,139	9,943
Current liabilities:
Accounts payable	272	809
Accrued expenses and other current liabilities	57	120
Total current liabilities	329	929
Warrant liability		67
Total liabilities	329	996
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.0001 par value - 500,000 shares authorized; 6,746 shares designated Series A convertible preferred stock; no shares issued and outstanding at December 31, 2025 and 2024
Common stock, $0.0001 par value - 200,000,000 shares authorized; 3,652,285 shares issued and outstanding at December 31, 2025 and 2024
Additional paid-in capital	306,128	306,103
Accumulated deficit	(302,318)	(297,156)
Total stockholders’ equity	3,810	8,947
Total liabilities and stockholders’ equity	$ 4,139	$ 9,943

Warrant liability.

No definition available.

Name:	PULM_WarrantLiability
Namespace Prefix:	PULM_
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).