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Segment Reporting | 12 Months Ended
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Dec. 31, 2025
Segment Reporting [Abstract] |
Segment Reporting | 3. Segment Reporting In its operation of the business, management, including the Company’s chief operating decision maker, who is also the Company’s Chief Executive Officer, reviews certain financial information, including segmented profit and loss and balance sheet statements. The Company currently operates in two reportable segments: a broker dealer & intellectual property service and technology development. The broker dealer & intellectual property service segment currently has two subsidiaries, Public Ventures and PatentVest. Public Ventures is a full-service broker dealer firm focusing on conducting private and public securities offerings. PatentVest offers in-depth patent research used for investment banking due diligence. The technology development segment currently has two subsidiaries, eXoZymes, and M1. eXoZymes is a research and development stage company synthetic biology company, that is consolidated in the Statement of Operations up to November 14, 2024. M1 research and development stage company that is developing a small molecule senescence platform. Non-income generating subsidiaries for management of the business, including MDB Management are reported in the Other column in the table below. The segments are based on the discrete financial information reviewed by the Chief Executive Officer to make resource allocation decisions and to evaluate performance. The reportable segments are each managed separately because they will provide a distinct product or provide services with different processes. All reported segment revenues are derived from external customers. The accounting policies of the Company’s reportable segments are in consideration of ASC 280 and the same as those described in the summary of significant accounting policies (see Note 2). The following sets forth the long-lived assets and total assets by segment at December 31, 2025 (in thousands): Schedule of Long-lived Assets and Total Assets by Segment
ASSETS |  | Broker Dealer and Intellectual Property Service |  |  | Technology Development |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Long-lived assets |  | $ | 117 |  |  | $ | - |  |  | $ | 547 |  |  | $ | - |  |  | $ | 664 |
Total assets |  | $ | 25,128 |  |  | $ | 3 |  |  | $ | 38,609 |  |  | $ | - |  |  | $ | 63,740 |
Schedule of Statement of Operation by Segment
|  | Broker Dealer & Intellectual Property Service |  |  | Technology Development |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Operating income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized (loss) on investment securities, net from the licensed broker dealer (1) |  | $ | (331 | ) |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | (331 | )
Investment securities, at fair value, held by the non-licensed broker dealer (1) |  |  | 85 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 85 |
Realized gain on investment securities, net from the licensed broker dealer (2) |  |  | 14 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 14 |
Fee income from the licensed broker dealer (3) |  |  | 4,282 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 4,282 |
Impairment loss |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Other operating income (4) |  |  | 861 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 861 |
Total operating income, net |  |  | 4,911 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 4,911 |
Operating costs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General and administrative costs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation |  |  | 2,875 |  |  |  | - |  |  |  | 12,094 |  |  |  | - |  |  |  | 14,969 |
Operating expense, related party |  |  | 1,471 |  |  |  | - |  |  |  | 362 |  |  |  | - |  |  |  | 1,833 |
Professional fees |  |  | 1,005 |  |  |  | 64 |  |  |  | 868 |  |  |  | - |  |  |  | 1,937 |
Information technology |  |  | 968 |  |  |  | - |  |  |  | 135 |  |  |  | - |  |  |  | 1,103 |
Clearing and other charges |  |  | 556 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 556 |
General and administrative-other |  |  | 742 |  |  |  | - |  |  |  | 1,497 |  |  |  | - |  |  |  | 2,239 |
General and administrative costs |  |  | 7,617 |  |  |  | 64 |  |  |  | 14,956 |  |  |  | - |  |  |  | 22,637 |
Research and development costs |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total operating costs |  |  | 7,617 |  |  |  | 64 |  |  |  | 14,956 |  |  |  | - |  |  |  | 22,637 |
Net operating (loss) |  |  | (2,706 | ) |  |  | (64 | ) |  |  | (14,956 | ) |  |  | - |  |  |  | (17,726 | )
Other income and expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Miscellaneous income |  |  | 75 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 75 |
Interest expense |  |  | (990 | ) |  |  | - |  |  |  | - |  |  |  | 990 |  |  |  | - |
Interest income |  |  | 471 |  |  |  | - |  |  |  | 1,136 |  |  |  | (990 | ) |  |  | 617 |
Gain related to dilution events |  |  | - |  |  |  | - |  |  |  | 61 |  |  |  | - |  |  |  | 61 |
Gain on deconsolidation of subsidiary |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
(Loss) before income taxes |  |  | (3,150 | ) |  |  | (64 | ) |  |  | (13,759 | ) |  |  | - |  |  |  | (16,973 | )
Income tax expense |  |  | 11 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 11 |
Income (loss) before equity method investee |  |  | (3,161 | ) |  |  | (64 | ) |  |  | (13,759 | ) |  |  | - |  |  |  | (16,984 | )
Equity in loss of equity method investee |  |  | - |  |  |  | - |  |  |  | (4,282 | ) |  |  | - |  |  |  | (4,282 | )
Net (loss) |  |  | (3,161 | ) |  |  | (64 | ) |  |  | (18,041 | ) |  |  | - |  |  |  | (21,266 | )
Less net loss attributable to non-controlling interests |  |  | - |  |  |  | (21 | ) |  |  | - |  |  |  | - |  |  |  | (21 | )
Net loss attributable to MDB Capital Holdings, LLC |  | $ | (3,161 | ) |  | $ | (43 | ) |  | $ | (18,041 | ) |  | $ | - |  |  | $ | (21,245 | )
| (1) | Includes unrealized losses on securities held by the broker-dealer and non-broker dealer.
| (2) | Includes realized gains on securities held by the broker-dealer.
| (3) | Includes fee income generated for the broker-dealer from investment banking activities, including advisory services, capital raising, and other related financial transactions.
| (4) | Includes fees earned from self-clearing activities by the broker-dealer and professional fees generated by PatentVest services.
The following sets forth the long-lived assets and total assets by segment at December 31, 2024 (in thousands):
ASSETS |  | Broker Dealer & Intellectual Property Service |  |  | Technology Development |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Long-lived assets |  | $ | 91 |  |  | $ | - |  |  | $ | 641 |  |  | $ | - |  |  | $ | 732 |
Total assets |  | $ | 21,754 |  |  | $ | 1 |  |  | $ | 50,221 |  |  | $ | - |  |  | $ | 71,976 |
|  | Broker Dealer & Intellectual Property Service |  |  | Technology Development |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Operating income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized (loss) on investment securities, net from the licensed broker dealer (1) |  | $ | (275 | ) |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | (275 | )
Fee income from the licensed broker dealer (2) |  |  | 2,221 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,221 |
Impairment loss (3) |  |  | (200 | ) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (200 | )
Other operating income (4) |  |  | 411 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 411 |
Total operating income, net |  |  | 2,157 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,157 |
Operating costs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General and administrative costs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation |  |  | 3,226 |  |  |  | 2,062 |  |  |  | 14,769 |  |  |  | - |  |  |  | 20,057 |
Operating expense, related party |  |  | 1,301 |  |  |  | - |  |  |  | 185 |  |  |  | - |  |  |  | 1,486 |
Professional fees |  |  | 820 |  |  |  | 1,206 |  |  |  | 1,086 |  |  |  | - |  |  |  | 3,112 |
Information technology |  |  | 805 |  |  |  | 34 |  |  |  | 83 |  |  |  | - |  |  |  | 922 |
Clearing and other charges |  |  | 1,137 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1,137 |
General and administrative-other |  |  | 806 |  |  |  | 133 |  |  |  | 1,669 |  |  |  | - |  |  |  | 2,608 |
General and administrative costs |  |  | 8,095 |  |  |  | 3,435 |  |  |  | 17,792 |  |  |  | - |  |  |  | 29,322 |
Research and development costs |  |  | - |  |  |  | 1,468 |  |  |  | - |  |  |  | - |  |  |  | 1,468 |
Total operating costs |  |  | 8,095 |  |  |  | 4,903 |  |  |  | 17,792 |  |  |  | - |  |  |  | 30,790 |
Net operating (loss) |  |  | (5,938 | ) |  |  | (4,903 | ) |  |  | (17,792 | ) |  |  | - |  |  |  | (28,633 | )
Other income and expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Miscellaneous income |  |  | 112 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 112 |
Interest expense |  |  | (779 | ) |  |  | (92 | ) |  |  | - |  |  |  | 799 |  |  |  | (72 | )
Interest income |  |  | 465 |  |  |  | 3 |  |  |  | 1,510 |  |  |  | (799 | ) |  |  | 1,179 |
Gain related to dilution events |  |  | - |  |  |  | - |  |  |  | 130 |  |  |  | - |  |  |  | 130 |
Gain on deconsolidation of subsidiary |  |  | - |  |  |  | - |  |  |  | 39,307 |  |  |  | - |  |  |  | 39,307 |
Income (loss) before income taxes |  |  | (6,140 | ) |  |  | (4,992 | ) |  |  | 23,155 |  |  |  | - |  |  |  | 12,023 |
Income tax expense |  |  | - |  |  |  | 2 |  |  |  | - |  |  |  | - |  |  |  | 2 |
Income (loss) before equity method investee |  |  | (6,140 | ) |  |  | (4,994 | ) |  |  | 23,155 |  |  |  | - |  |  |  | 12,021 |
Equity in loss of equity method investee |  |  | - |  |  |  | - |  |  |  | (420 | ) |  |  | - |  |  |  | (420 | )
Net income (loss) |  |  | (6,140 | ) |  |  | (4,994 | ) |  |  | 22,735 |  |  |  | - |  |  |  | 11,601 |
Less net loss attributable to non-controlling interests |  |  | - |  |  |  | (90 | ) |  |  | - |  |  |  | - |  |  |  | (90 | )
Net income and (loss) attributable to MDB Capital Holdings, LLC |  | $ | (6,140 | ) |  | $ | (4,904 | ) |  | $ | 22,735 |  |  | $ | - |  |  | $ | 11,691 |
| (1) | Includes unrealized gains and losses on securities held by the broker-dealer.
| (2) | Includes fee income generated for the broker from investment banking activities, including advisory services, capital raising, and other related financial transactions.
| (3) | Includes impairment loss of assets from the reduced fair value of the asset.
| (4) | Includes fees earned from self-clearing activities and professional fees generated by PatentVest services.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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