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$OSS All transactions

ONE STOP SYSTEMS, INC.

A

$ Value

$0

Shares

21,000

Price

$0

Filed

Sep 2

Insider

Name

KNOWLES MICHAEL

Title

Chief Executive Officer

CIK

0001755059

Roles

Director Officer

Transaction Details

Transaction Date

2025-05-21

Code

A

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

612,653

Footnotes

Represents 131,448 restricted stock units granted to the Reporting Person under the Company's 2017 Equity Incentive Plan (the "Plan") in connection with the Reporting Person's ongoing service of the executive management team. | Includes 512,898 unvested restriced stock units held by the Reporting Person, all of which remain subject to certain vesting conditions. | The Reporting Person forfeited 16,800 shares of common stock upon conversion of an aggregate 43,816 vested and outstanding restricted stock units into shares of common stock to cover tax withholdings, using the market price of the issuer's common stock at the time of forfeiture. These restricted stock units were part of the grant reported in Table I of the Form 4 filed by the Reporting Person with the Securities and Exchange Commission on June 6, 2023. | Includes 469,082 unvested restricted stock units held by the Reporting Person, all of which remain subject to certain vesting conditions. | Represents 21,000 restricted stock units granted to the Reporting Person under the Company's 2017 Equity Incentive Plan (the "Plan") in connection with the Reporting Person's ongoing service of the executive management team. | Includes 490,082 unvested restriced stock units held by the Reporting Person, all of which remain subject to certain vesting conditions. | The Reporting Person forfeited 19,075 shares of common stock upon conversion of an aggregate 50,000 vested and outstanding restricted stock units into shares of common stock to cover tax withholdings, using the market price of the issuer's common stock at the time of forfeiture. These restricted stock units were part of the grant reported in Table I of the Form 4 filed by the Reporting Person with the Securities and Exchange Commission on June 6, 2023. | Includes 440,082 unvested restricted stock units held by the Reporting Person, all of which remain subject to certain vesting conditions. | The Reporting Person forfeited 8,359 shares of common stock upon conversion of an aggregate 21,909 vested and outstanding restricted stock units into shares of common stock to cover tax withholdings, using the market price of the issuer's common stock at the time of forfeiture. These restricted stock units were part of the grant reported in Table I of the Form 4 filed by the Reporting Person with the Securities and Exchange Commission on June 6, 2023. | Includes 418,173 unvested restricted stock units held by the Reporting Person, all of which remain subject to certain vesting conditions.

Filing Info

Accession No.

0000950170-25-112624

Form Type

4

Issuer CIK

0001394056

KNOWLES MICHAEL's History

Date Ticker Type Value
2026-02-15 OSS F $58K
2026-02-07 OSS A $0
2026-02-07 OSS F $123K
2025-12-31 OSS F $137K
2025-08-20 OSS F $44K
2025-06-05 OSS F $58K
2025-05-21 OSS A $0
2025-05-21 OSS A $0
2025-02-20 OSS F $63K
2025-02-07 OSS A $534K

Other Insiders at OSS (90d)

Insider Bought Sold Last
Ison James
CPO
2026-02-15
KNOWLES MICHAEL
Chief Executive Officer
2026-02-15
Gabel Daniel G.
Chief Financial Officer
2026-02-07