Uponor International Sales
Industriestrasse 56, 97437 Hassfurt, Germany

Disclosure under chapter 2 section 9 of the securities market act

Disclosure under chapter 2 section 9 of the securities market act

Uponor Corporation has received from Sampo Life Insurance Company Ltd the
attached notification referred to in Chapter 2, Section 9 of the Securities
Markets Act on a change in holdings. 

For additional information, please contact: 
Jyri Luomakoski, CFO and Deputy CEO, Tel +358 40 515 4498


Uponor Corporation

Communications
Tel. +358(0)20 129 2854



DISTRIBUTION
Helsinki Stock Exchange
Media
www.uponor.com


ANNEX: Sampo Life Insurance Company Ltd's disclosure

In Helsinki, 24 May 2007

NOTIFICATION REFERRED TO IN CHAPTER 2, SECTION 9, OF THE SECURITIES MARKETS ACT
ON A CHANGE IN HOLDINGS 

As a result of a share transaction concluded 23 May 2007, the holdings of Sampo
Life Insurance Company Ltd, part of the Sampo Group, represent less than 5 % of
the voting rights and share capital in Uponor Corporation. Under chapter 2,
section 9, of the Securities Markets Act, we hereby notify the Financial
Supervision and Uponor Corporation of the following: 

1. Name of target company: Uponor Corporation, business identity code 0148731-6

2. Date of change in holdings: 23 May 2007

3. Exact proportion of voting rights and share capital in Uponor Corporation

The holdings of Sampo Life Insurance Company Ltd in Uponor Corporation are
follows: 

Number of shares: 3,449,117
Proportion of share capital: 4.71%
Proportion of voting rights: 4.71%

The share capital of Uponor Corporation as of today comprises a total of
73,206,944 issued shares, said shares entitling to a total of 73,206,944 votes.
Information is based on trade register data of 23 May 2007. 

4. Shareholder's complete name, trade register number
Sampo Life Insurance Company Ltd, 0641130-2