Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 4,546,000	$ 3,548,000
Accounts receivable, net of allowances	761,000	3,168,000
Inventories	409,000	330,000
Prepaid expenses and other current assets	59,000	91,000
Total current assets	5,775,000	7,137,000
Equipment and leasehold improvements, net	1,664,000	1,742,000
Other non-current assets	116,000	95,000
Operating lease right-of-use assets, net	1,070,000	992,000
Financing lease right-of-use asset, net	400,000	451,000
Investment in South Korean joint venture	23,000	14,000
Total assets	9,130,000	10,513,000
Current liabilities:
Accounts payable and accrued expenses	891,000	946,000
Debt obligations	83,000	66,000
Operating lease liabilities	142,000	105,000
Finance lease liability	88,000	88,000
Deposits	80,000	90,000
Total current liabilities	3,451,000	2,648,000
Long-term liabilities:
Operating lease liabilities, net of current	969,000	922,000
Finance lease liability, net of current	295,000	360,000
Total long-term liabilities	2,464,000	1,809,000
Total liabilities	5,915,000	4,457,000
STOCKHOLDERS’ EQUITY:
Preferred Series A, $0.00067 Par Value, 50,000,000 Shares Authorized, no Shares Issued and Outstanding, at September 30, 2025 and December 31, 2024	0	0
Common stock, $0.00067 Par Value, 550,000,000 Shares Authorized, 311,452,683 and 301,274,243 Shares Issued, at September 30, 2025 and December 31, 2024	208,000	202,000
Additional paid-in capital	164,894,000	158,332,000
Accumulated deficit	(158,327,000)	(149,500,000)
Accumulated other comprehensive loss	(195,000)	(183,000)
Total BioLargo Inc. and subsidiaries stockholders’ equity	6,580,000	8,851,000
Non-controlling interest (Notes 8, 9, 10)	(3,365,000)	(2,795,000)
Total stockholders’ equity	3,215,000	6,056,000
Total liabilities and stockholders’ equity	9,130,000	10,513,000
Partially Owned Subsidiary [Member]
Current assets:
Note receivable, net of current	82,000	82,000
Current liabilities:
Accounts payable and accrued expenses	1,134,000	867,000
Debt obligations	1,033,000	486,000
Long-term liabilities:
Debt obligations, net of current	1,010,000	352,000
Entities, Excluding Partially Owned Subsidiary [Member]
Current liabilities:
Accounts payable and accrued expenses	891,000	946,000
Long-term liabilities:
Debt obligations, net of current	$ 190,000	$ 175,000