Oslo, Norway, November 24 2008. Three M AS, fully-owned by Atle
Jacobsen CEO of Wavefield Inseis ASA, purchased 50,000 shares in
Wavefield Inseis on Monday November 24 at an average price of NOK
11.74 per share. After the transaction, Atle Jacobsen holds 624,167,
including indirect ownership through fully owned limited company,
shares in the company.


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


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 world
wide.


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