Dissemination of an Ad hoc announcement according to § 15 WpHG

UMS AG shareholders approved dividend distributions of EUR1,542,297.90 and EUR2,436,642.00 respectively at the annual shareholders' meetings in 2010 und 2011 for the 2009 and 2010 fiscal years. On the advice of its tax advisers, the company withheld taxes on these distributions (25% investment income tax and the solidarity surcharge of 5.5% of that amount, for a total of 26.375%) and remitted the taxes to the Treasury. Recently, however, the Company found that taxes were not required to be withheld on the dividends distributed in 2010 and 2011 because the distributions were made from the contribution account for tax purposes.

Persons who were shareholders of the Company at the time of the dividend resolution, i.e., June 3, 2010 and/or May 19, 2011, may therefore be entitled to an amount in addition to the dividend they received, which may be equal to or less than the amount withheld, depending on their individual tax situation (plus any additional claims to which the person may entitled, such as interest). This is currently being reviewed by the company. The Company is also reviewing possible recourse against its tax advisers.

The Company currently estimates that the total additional amount to be distributed to the relevant shareholders could be up to EUR835,000.

For more information, visit the UMS AG website at www.ums.de and click on Investor Relations.

Information and Explaination of the Issuer to this News:

Dividend Distributions in 2010 and 2011

Dear Shareholders:

Thank you for taking the time to read our press release.

As mentioned there, at the annual meetings in 2010 and 2011, the Company's shareholders approved a dividend distribution for the prior fiscal years 2009 and 2010. On the advice of its tax advisors, the company withheld taxes for you (investment income tax, solidarity surcharge and any applicable church tax) and remitted them to the proper Tax Office.

The background was that distributions by stock corporations constitute taxable investment income at the shareholder level, and therefore, the corporation is required to withhold the taxes for its shareholders and remit them to the proper Tax Office.

Recently, however, we determined that the Company should not have withheld taxes from the dividends distributed in 2010 and 2011 because these distributions could have been made from the contribution account for tax purposes as defined in § 27, such that the distributions would have been tax-exempt.

If you were a shareholder of the company when the distribution resolutions were adopted on June 3, 2010 and/or on May 19, 2011, you may be entitled to an amount in addition to the dividend you have already received. This is currently being reviewed by the company. To determine whether you are entitled to such a claim, and if so, in what amount, the company needs information from you. Therefore, we ask you to please request a questionnaire from the company. The contact information is as follows:

E-Mail: info@umsag.com
Tel: +49 40 500 177 00
Fax: +49 40 500 177 77

Please fill in the questionnaire truthfully and faithfully or have it completed by your tax advisor and return it by

December 31, 2012

by mail, fax or as an e-mail attachment to the following address:

UMS United Medical Systems International AG
Borsteler Chaussee 53
D-22453 Hamburg
Fax: +49 40 500 177 77
E-Mail: info@umsag.com

We will review your individual situation on the basis of your information and then get in touch with you as soon as possible. Please note that this could take a great deal of time.

Sincerely

UMS United Medical Systems International AG
The Management Board

UMS International AG is a provider of innovative healthcare delivery concepts in the growth segment of high-tech medicine. UMS pioneered the mobile deployment of high-class medical systems and markets a comprehensive range of full-service solutions for hospitals and specialists. The forward-looking concepts include complete services for the customer, covering everything from system management to the provision of trained application specialists. The UMS Group currently has around 220 employees worldwide and serves over 650 customers.

UMS United Medical Systems International AG
Christian Möller
Tel: (040) 500 177-00
Fax: (040) 500 177-77
E-Mail:info@umsag.com

Press Relations
Werner Rueppel
Eschersheimer Landstraße 42
60322 Frankfurt
Tel: (069) 90 55 05 54
Email: wrueppel@edicto.de

This release was published on openPR.