Wavefield Inseis ASA (OSL:WAVE) WAVE - Mandatory Notification Of Trade

Wavefield Inseis ASA (OSL:WAVE) Oslo, Norway, January 20, 2009 The following primary insider of Wavefield Inseis ASA ("Wavefield") has accepted to sell shares in Wavefield to Compagnie Générale de Géophysique-Veritas SA ("CGGV") under the terms of the mandatory offer document, published on December 30th 2008.

Philip Charles Suter - Acceptance for 40,000 of Wavefield shares held personally comprising all his shares in Wavefield. Following the acceptance, Philip Charles Suter holds personally 0 shares in Wavefield and 72,000 options giving right to acquire 72,000 shares in Wavefield.

For further information, contact: Bente Tomasik, IR assistant, Wavefield Inseis ASA Email: bente.tomasik@wavefield-inseis.com, Tel; +47 67 82 84 21

About Wavefield Inseis ASA Wavefield Inseis ASA is a Norwegian marine geophysical company providing proprietary data acquisition services and offers a portfolio of non-exclusive Multi Client data to the global exploration community, developed in partnership with oil companies and governments. Our range of products includes long offset 2D, high capacity 3D, 4D, Multi-azimuth and Wide-azimuth data acquired with highly specified vessels and the latest seismic equipment, including our OPTOWAVE(TM) multi-component ocean bottom cable (4C OBC) system for permanent seismic 4D monitoring that uses optical sensor technology. We are also in the process of launching a new concept for EM acquisition and data analysis. From our main offices in Bergen and Oslo, Norway, and our other locations in London, Houston, Singapore and Perth, Wavefield Inseis has a global reach, with activities worldwide.

This announcement was originally distributed by Hugin. The issuer is solely responsible for the content of this announcement.

Wavefield Inseis ASA

http://www.wavefield.no

ISIN: NO0010295504

Stock Identifier: XOSL.WAVE