Stuttgart (euro adhoc) -

  Notification concerning transactions by persons discharging managerial
  responsibilities pursuant to section 15a of the WpHG, transmitted by euro
  adhoc with the aim of a Europe-wide distribution. The issuer is responsible
  for the content of this announcement.

21.05.2007

Details of the person subject to the disclosure
requirement:

Name:              Ralph Kienzler
Name of contact/telephone number:
Astrid Forst, 07531 / 99677-480

Reason for the disclosure requirement:
Reason:            Person performing managerial responsibilities
Position:          Member of a managing body

Details of the transaction:
Description of financial instrument: Sunways-Aktie

ISIN:                DE0007332207
Type of transaction: purchase
Date:                21.05.2007
No of items:         1000
Currency:            Euro
Price:               8.49000
Total amount traded: 8,490.00000
Place:               Stuttgart
Explanation:         shared depot with wife Susanne Neue-Kienzler

Issuer subject to the publication requirement:

end of announcement                               euro adhoc 25.05.2007 11:29:05

Further inquiry note:

Astrid Forst, 07531 / 99677-480

Branche: Alternative energy
ISIN: DE0007332207
WKN: 733220
Index: CDAX, Prime All Share, Technologie All Share
Börsen: Frankfurter Wertpapierbörse / regulated dealing/prime
standard
Börse Berlin-Bremen / free trade
Hamburger Wertpapierbörse / free trade
Baden-Württembergische Wertpapierbörse / free trade
Börse Düsseldorf / free trade
Niedersächsische Börse zu Hannover / free trade
Bayerische Börse / free trade