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KNOWLES MICHAEL reported acquisition or exercise transactions in this Form 4 filing.
ONE STOP SYSTEMS, INC. Chief Executive Officer Michael Knowles filed an amended insider ownership report to correct a prior clerical error. A previous Form 4 had incorrectly shown a grant of 21,000 restricted stock units on May 21, 2025. The amendment reduces the number of shares reported as beneficially owned following that transaction by 21,000 shares. According to the corrected disclosure, Knowles beneficially owns 627,058 shares as of March 16, 2026, and the amendment does not reflect any change in beneficial ownership other than this reporting adjustment.
One Stop Systems, Inc. (OSS) designs and manufactures rugged, high-performance edge computing systems for AI, machine learning, sensor processing and autonomy. Its platforms combine GPUs, CPUs, PCIe switch fabrics and high-density flash storage to bring datacenter-class performance to mobile and harsh environments on land, sea and in the air.
OSS focuses on military and commercial applications such as autonomous trucks, mining and agricultural equipment, medical devices and defense platforms. In 2025 it sold its Bressner German distribution business to prioritize core deployable edge systems and reports a five-year pipeline of target opportunities exceeding one billion dollars.
The company emphasizes first-to-market technology leadership in PCIe Gen 5 and Gen 6, rugged servers like Torrey Break and SDS, and proprietary software including U-BMC management and Ion Accelerator storage. Key risks include customer concentration, supply chain disruptions, macroeconomic and geopolitical uncertainty, and sensitivity to changes in U.S. defense spending.
ONE STOP SYSTEMS, INC. chief product officer James Ison reported a mix of equity awards, tax withholdings, and gifts involving company common stock. On February 7, 2026, he received a grant of 34,313 restricted stock units under the 2017 Equity Incentive Plan, tied to his ongoing executive service.
That same day, he forfeited 6,546 shares at $9.24 per share to cover tax withholdings upon conversion of vested restricted stock units, and made bona fide gifts of 8,213 shares directly and 8,213 shares to a revocable family trust where he serves as trustee. On February 15, 2026, he forfeited an additional 3,120 shares at $8.70 per share for tax withholdings and gifted 4,263 shares directly and 4,263 shares to the same trust.
After these transactions, he continued to hold OSS common stock both directly and indirectly through the trust, and footnotes state that 125,934 unvested restricted stock units remain subject to vesting conditions.
ONE STOP SYSTEMS, INC. Chief Financial Officer Daniel G. Gabel disposed of 7,799 shares of common stock through a tax-withholding forfeiture. The shares were surrendered when 23,761 vested restricted stock units converted into common shares, with the forfeited amount used to cover tax obligations at the market price.
After this tax-withholding disposition, Gabel directly held 155,509 common shares. He also holds 132,762 unvested restricted stock units that remain subject to vesting conditions, meaning additional shares could be delivered to him over time as those units vest.
KNOWLES MICHAEL reported disposition transactions in this Form 4 filing.
ONE STOP SYSTEMS, INC. Chief Executive Officer Michael Knowles reported tax-related share forfeitures linked to vesting restricted stock units. On February 7, 2026, he forfeited 13,298 shares of common stock, and on February 15, 2026, he forfeited an additional 6,650 shares, both to cover tax withholdings when vested restricted stock units converted into shares. After these transactions, he directly owned 648,058 shares of common stock and also held 404,311 unvested restricted stock units that remain subject to vesting conditions.
Lynrock Lake, together with Lynrock Lake Partners LLC and Cynthia Paul, reports beneficial ownership of 665,918 shares of One Stop Systems common stock as of December 31, 2025. This represents 2.7% of the company, based on 24,515,491 shares outstanding as of October 31, 2025.
The shares are held directly by Lynrock Lake Master Fund LP, with Lynrock Lake LP as investment manager and Cynthia Paul as Chief Investment Officer and sole member of the general partner. The filing states the position is held in the ordinary course and not for the purpose of changing or influencing control, and confirms ownership of 5 percent or less of the class.
One Stop Systems, Inc. received an amended Schedule 13G showing that institutional investor Bard Associates, Inc. beneficially owns 540,100 shares of its common stock, representing 2.2% of the class.
Bard Associates reports sole voting and dispositive power over 50,000 shares and shared dispositive power over 490,100 shares. The firm indicates it owns less than five percent of the class and certifies the shares were acquired and are held in the ordinary course of business, not to change or influence control of One Stop Systems.
One Stop Systems, Inc. (OSS) reported an equity award to its Chief Financial Officer, Daniel G. Gabel. On February 7, 2026, he was granted 55,239 restricted stock units (RSUs) of OSS common stock at a price of $0 per share under the company’s 2017 Equity Incentive Plan.
After this grant, Mr. Gabel beneficially owns 163,308 shares of common stock, which includes 156,523 unvested RSUs that remain subject to vesting conditions. The award was made in connection with his ongoing service on the executive management team.
One Stop Systems, Inc. reported that its Chief Executive Officer and director, Michael Knowles, received an equity award in the form of restricted stock units. On 02/07/2026, he was granted 101,862 restricted stock units under the company’s 2017 Equity Incentive Plan for his ongoing executive service.
These units were recorded at a price of $0 per share, reflecting a compensatory grant rather than an open‑market purchase. After this grant, Knowles beneficially owned 668,006 shares of common stock, including 470,035 unvested restricted stock units that remain subject to vesting conditions.
ONE STOP SYSTEMS, INC. Chief Financial Officer Daniel G. Gabel reported an automatic share withholding related to equity compensation. On December 31, 2025, 3,215 shares of common stock were forfeited to cover tax withholdings when an aggregate 10,000 vested restricted stock units converted into common shares, using the market price of $7.18 per share at the time.
Following this tax-related transaction, Gabel beneficially owned 108,069 shares of common stock directly. This total includes 101,284 unvested restricted stock units that remain subject to vesting conditions, meaning a large portion of his reported holdings is still contingent on future service or performance requirements.