AMX-INDEX: Index Announcement

Reference: Press release by Mexichem of Friday 9 March 2012.

Name: AMX®

ISIN code: NL0000249274

Subject: Take-over
Company: Wavin (ISIN: NL0009412683)
Details: Mexichem has launched a recommended cash offer for all Wavin shares at an offer price of € 10.50 cum dividend for each Wavin share. The acceptance period under the offer commences at 9:00 CET on 12 March 2012 and ends at 17:30 hours, CET, on 7 May 2012, unless extended. The offer shall be subject to the fulfillment of the offer conditions as set out in the offer memorandum, including an acceptance level of at least 80% of issued and outstanding shares Wavin.

Index Adjustment(s):

effective date 1: As from the first day of trading after the close of the offer period (expected to be Monday 7 May 2012) assented shares Wavin (ISIN NL0010107322) will be included in the index (replacing the shares Wavin traded under ISIN code NL0009412683).

effective date 2: If the offer is declared unconditional before trading starts or during trading (day T), Wavin will be removed from the AMX-Index® after the close of trading on the same day (day T); If the offer is declared unconditional after the close of trading (day T), Wavin will be removed from the index after the close of trading on the next day (day T+1); The index divisor will be adjusted.

Conditions: – The offer needs to be declared unconditional
– The free float of Wavin needs to be below 25% (if the remaining free float is at least 25%, the Compiler will take a decision on removal)