Dumont Michael J. 4

What Happened
Michael J. Dumont, a director of One Stop Systems, was granted 11,984 restricted stock units (RSUs) under the company's 2017 Equity Incentive Plan on 2026-05-20. The transaction is reported as an award/acquisition (Code A) at $0.00 per share (typical for RSU grants, which are paid in shares upon vesting rather than immediate cash purchases).

Key Details

• Transaction date: 2026-05-20; Form 4 filed 2026-05-26 (filing marked late — transactionTimeliness = 'L').
• Transaction type/code: Award/Grant (A). Reported acquisition: 11,984 RSUs at $0.00.
• Shares owned after the grant: 107,849 shares of common stock plus 11,984 unvested RSUs (total reported beneficial interest = 119,833, with the 11,984 subject to vesting conditions).
• Footnotes: F1 — RSUs granted under the 2017 Equity Incentive Plan and subject to vesting; F2 — confirms the 11,984 unvested RSUs and 107,849 common shares.
• No indication of a 10b5-1 plan, sale, exercise, or tax-withholding disposition in this filing.

Context
RSU grants are a form of compensation for directors and generally do not involve cash outlay by the recipient; shares are typically delivered only after vesting conditions are met. Because this is a grant (not a purchase or sale), it should be viewed as routine compensation rather than a direct market sentiment signal. Note the Form 4 was filed several days after the transaction date, which reduces near-term transparency but does not by itself indicate improper trading.