VASCO DATA SECURITY INTERNATIONAL INC

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

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)

Results of Operations and Financial Condition

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

Specialized Disclosure Report

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

Additional Information for Proxy Statement/ Votes

Other Events

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

Financial Statements and Exhibits

Definitive Proxy Statement

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

Annual report pursuant to Section 13 or 15(d)

Financial Statements and Exhibits

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

Financial Statements and Exhibits

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)

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

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

Specialized Disclosure Report

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

Results of Operations and Financial Condition

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

Other Events

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

Results of Operations and Financial Condition

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

5.02,9.01

2.02,9.01

5.07,9.01

Specialized Disclosure Report

8.01

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

2.02,9.01

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

2.05

Correspondence with the SEC

Letter from the SEC

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

Letter from the SEC

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

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Specialized Disclosure Report

Letter from the SEC

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)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

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

Required Information in Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional proxy soliciting materials filed by a non-management party

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional proxy soliciting materials filed by a non-management party

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Letter from the SEC

Letter from the SEC

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

Specialized Disclosure Report

Specialized Disclosure Report

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

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

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Post-effective amendment to a registration statement

Amended Initial Registration Statement

Amended Initial Registration Statement

Withdrawal of a registration statement

Registration (IPO) statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Mataac Lara

Martell Jorge Garcia

Limongelli Victor

Jain Ashish

Martell Jorge Garcia

Martell Jorge Garcia

Martell Jorge Garcia

Mataac Lara

Limongelli Victor

Martell Jorge Garcia

Jain Ashish

Mataac Lara

Martell Jorge Garcia

Martell Jorge Garcia

Martell Jorge Garcia

Limongelli Victor

Mataac Lara