Updating communication to the prospectus of ATM Systemy Informatyczne S.A.: change of the reference day

Current report 30/2012 dated 10.05.2012

Legal basis: Article 56 (1) (2) of the Act on Public Offering — current and periodic information

The Management Board of ATM S.A. informs that today, it received information from ATM Systemy Informatyczne on an updating communication to the prospectus which changes the calendar of the Offer.

The complete updating communication will be published on ATM Systemy Informatyczne S.A.’s website (www.atm-si.com.pl). The updated calendar is presented below.

III/IV week of 2012 (D day)
Submission of ATM SI S.A.’s applications for:
1. Conclusion of an issuer contract
2. Registration of Issuer’s Shares of A, B, C, D series in KDPW
3. Fixing May 16, 2012 as the reference day

April 25, 2012
Court registration of the division, including registration of the share capital increase by issue of D series shares

IV week of April, 2012
Submission of ATM SI S.A.’s application for registration of Issuer’s Shares of A, B, C, D series in KDPW (The National Depository of Securities)

May 16, 2012
The Last Quotation Day of ATM S.A. shares marked as entitling to subscribe the Offered Shares

May 16, 2012 (after closing of the WSE listing)
Settlement of the reference rate for ATM S.A. shares

May 21, 2012 (R Day)
Reference Day
In order to have ATM S.A. shares (that entitle to acquire the Issuer shares) deposited on their investment account on the Reference Day, an investor should purchase ATM S.A. shares at least three stock sessions before the Reference Day

R+3 Day
Allotment of the Offered Shares through KDPW (The National Depository of Securities). Registration of the Offered Shares on the accounts of KDPW participants

R+10 Day
The First Listing of the Company shares

Maciej Krzyżanowski — President of the Management Board,
Tadeusz Czichon — Vice-President of the Management Board