KNOWLES MICHAEL — SEC Form 4 filings
SEC reporting owner CIK 1755059. 10 Form 4 filings on record with FilingPulse; latest filed 2026-09-04.
Transaction summary — filings shown
Covers all 10 filings on record, filed 2024-06-18 to 2026-09-04. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 16.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| ONE STOP SYSTEMS, INC. (OSS) | Chief Executive Officer, Director | 10 | — | — | 16 |
Form 4 filings — KNOWLES MICHAEL
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-04 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Tax withholding (F): 8,621 @ $13.32 · Tax withholding (F): 8,621 @ $13.61 | EDGAR |
| 2026-06-12 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Tax withholding (F): 19,675 @ $16.89 | EDGAR |
| 2026-03-27 | 4/A | ONE STOP SYSTEMS, INC. (OSS) | Grant/award (A): 0 @ $0 | EDGAR |
| 2026-03-02 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Tax withholding (F): 13,298 @ $9.24 · Tax withholding (F): 6,650 @ $8.70 | EDGAR |
| 2026-02-11 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Grant/award (A): 101,862 @ $0 | EDGAR |
| 2026-01-07 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Tax withholding (F): 19,075 @ $7.18 | EDGAR |
| 2025-09-02 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Grant/award (A): 131,448 @ $4.06 · Tax withholding (F): 16,800 @ $3.76 · Grant/award (A): 21,000 @ $0 · Tax withholding (F): 19,075 @ $3.06 · Tax withholding (F): 8,359 @ $5.26 | EDGAR |
| 2024-12-30 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Tax withholding (F): 17,525 @ $2.41 | EDGAR |
| 2024-07-03 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Grant/award (A): 131,450 @ $0 | EDGAR |
| 2024-06-18 | 4 | ONE STOP SYSTEMS, INC. (OSS) | Tax withholding (F): 38,050 @ $2.18 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
Need this as JSON?
GET https://api.filingpulse.io/v1/insider-trades?owner_cik=1755059 returns every filing on this page — normalized, with footnotes and derivative legs — and webhooks push new filings to you in seconds. API docs →