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Related Party Transactions | 12 Months Ended
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Dec. 31, 2025
Related Party Transactions |
Related Party Transactions | Note 10 – Related Party Transactions Qualstar Corporation (OTCMKTS:QBAK) Qualstar Corporation (OTCMKTS:QBAK) (“Qualstar”) is a related party. Steven N. Bronson, our Chairman of the Board, President and Chief Executive Officer, is also the President, Chief Executive Officer and a director of Qualstar. Ryan J. Hoffman, our Chief Financial Officer, is also the Acting Chief Financial Officer of Qualstar. Mr. Bronson, together with BKF Capital Group, Inc. (OTCMKTS:BKFG) which he controls, has a controlling interest in both Interlink and Qualstar. We have a mutual facilities sharing agreement with Qualstar under which Qualstar allows us to use of a portion of its Camarillo, California office and warehouse facility, and we previously allowed Qualstar to use a portion of our former Irvine, California and Bellevue, Washington office facilities, in each case splitting substantially all rent and lease-related costs on an apportioned basis according to the approximate relative usage levels by each entity. In addition, we have a mutual consulting agreement with Qualstar under which certain of our respective employees and/or independent contractors provide certain operational, sales, marketing, general and administrative services to the other entity. Interlink and Qualstar also agree to reimburse, or be reimbursed by, one another for expenses paid by one company on behalf of the other. Transactions with Qualstar and its subsidiaries are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2025 | ​ | 2024
​ | ​ ​ ​ | Due from Qualstar | ​ ​ ​ | Due to Qualstar | ​ ​ ​ | Due from Qualstar | ​ ​ ​ | Due to Qualstar
​ |  | (in thousands)
Balance at January 1, | ​ | $ | 8 | ​ | $ | 12 | ​ | $ | 2 | ​ | $ | 32
Billed (or accrued) to Qualstar by Interlink | ​ |  | 429 | ​ |  | — | ​ |  | 450 | ​ |  | —
Paid by Qualstar to Interlink | ​ |  | (432) | ​ |  | — | ​ |  | (444) | ​ |  | —
Billed (or accrued) to Interlink by Qualstar | ​ |  | — | ​ |  | 187 | ​ |  | — | ​ |  | 158
Paid by Interlink to Qualstar | ​ |  | — | ​ |  | (174) | ​ |  | — | ​ |  | (178)
Balance at December 31, | ​ | $ | 5 | ​ | $ | 25 | ​ | $ | 8 | ​ | $ | 12
​ ​ BKF Capital Group, Inc. (OTCMKTS:BKFG) BKF Capital Group, Inc. (OTCMKTS:BKFG) (“BKF Capital”) is a related party. Steven N. Bronson, our Chairman of the Board, President and Chief Executive Officer, is also the Chief Executive Officer and Chairman of BKF Capital. Ryan J. Hoffman, our Chief Financial Officer, is also the Chief Financial Officer of BKF Capital. Mr. Bronson, together with BKF Capital, has a controlling interest in Interlink. We have a facilities agreement with BKF Capital to allow BKF Capital to previously use a portion of our former Irvine, California office facility, for which we agreed to split substantially all rent and lease-related costs on an apportioned basis according to the approximate relative usage levels by each entity. In 2021, we entered into a M&A advisory consulting services agreement with Bronson Financial LLC (“BF”), a wholly owned subsidiary of BKF Capital, pursuant to which BF provided M&A advisory consulting services to us. This agreement was terminated in April 2024. Interlink and BKF Capital also agree to reimburse, or be reimbursed by, one another for expenses paid by one company on behalf of the other. Transactions with BKF Capital and its subsidiaries are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ | ​ | 2025 | ​ | 2024
​ | ​ ​ ​ | Due from BKF Capital | ​ ​ ​ | Due to BKF Capital | ​ ​ ​ | Due from BKF Capital | ​ ​ ​ | Due to BKF Capital
​ |  | ​ | (in thousands)
Balance at January 1, | ​ | $ | — | ​ | $ | — | ​ | $ | 2 | ​ | $ | —
Billed (or accrued) to BKF Capital by Interlink | ​ |  | 8 | ​ |  | — | ​ |  | 8 | ​ |  | —
Paid by BKF Capital to Interlink | ​ |  | (5) | ​ |  | — | ​ |  | (10) | ​ |  | —
Billed (or accrued) to Interlink by BKF Capital | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 75
Paid by Interlink to BKF Capital | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (75)
Balance at December 31, | ​ | $ | 3 | ​ | $ | — | ​ | $ | — | ​ | $ | —
​

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