ONE STOP SYSTEMS, INC.

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

General form for quarterly reports under Section 13 or 15(d)

Entry into a Material Definitive Agreement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Regulation FD Disclosure

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Entry into a Material Definitive Agreement

General form for quarterly reports under Section 13 or 15(d)

Entry into a Material Definitive Agreement

Prospectus Supplement for Primary Offering

General form for quarterly reports under Section 13 or 15(d)

Submission of Matters to a Vote of Security Holders

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

5.03,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,7.01,9.01

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

5.02,5.07,9.01

General form for quarterly reports under Section 13 or 15(d)

2.01,7.01,9.01

7.01,9.01

Annual Report Scanned (Paper)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

2.02,7.01,9.01

5.02,7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

Notice of Effectiveness

Correspondence with the SEC

Letter from the SEC

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

Prospectus Supplement for Primary Offering

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Prospectus Supplement for Primary Offering

Preliminary Proxy Statement

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Correspondence with the SEC

Letter from the SEC

Registration statement under Securities Act of 1933

Definitive Proxy Statement

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

Prospectus Supplement with Pricing Information

Correspondence with the SEC

Correspondence with the SEC

Certification of approval for listing and registration on a national securities exchange

Notice of Effectiveness

Notice of Effectiveness

Free Writing Prospectus

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Draft registration statement (confidential submission)

FILED AS OF DATE: 20070319

KNOWLES MICHAEL

Gabel Daniel G.

KNOWLES MICHAEL

Gabel Daniel G.

BASSETT DAVID GEORGE

Dumont Michael J.

Matz Gregory W

BASSETT DAVID GEORGE

Herbets Mitchell H

Matz Gregory W

Herbets Mitchell H

KNOWLES MICHAEL

Gabel Daniel G.

Ison James

KNOWLES MICHAEL