Notification according to sec 93 BoerseG (Austrian Stock Exchange Act) in connection with sec 91 and sec. 92 no 6 BoerseG

As Schoeller-Bleckmann Oilfield Equipment AG (SBO) was informed on 01. February 2013, the company announces according to sec. 93 BoerseG (Austrian Stock Exchange Act) in connection with sec. 91 and sec. 92 no 6 BoerseG that as of 30 January 2013 Massachusetts Mutual Life Insurance Company, 1295 State Street, Springfield, MA 01111, United States (“MassMutual“) indirectly holds voting rights of more than 4 % of SBO through various subsidiaries controlled by MassMutual.

The voting rights are attached to 642,860 shares in SBO held by various funds managed by our controlled subsidiaries OppenheimerFunds Inc., OFI Institutional Asset Management, Inc. and Baring Asset Management Limited. No individual fund owns 4 % or more of SBO’s voting rights. In aggregation the funds own 4.018% of SBO’s voting rights. Each of OppenheimerFunds Inc., OFI Institutional Asset Management Inc. and Baring Asset Management Limited have the authority to exercise, at their own discretion, the voting rights attached to the SBO shares on behalf of the funds managed by them.

(i) Amount of aggregated voting rights and percentage

MassMutual 642,860.00 shares or 4.018% of SBO’s voting rights

(ii) Chain of controlled undertakings through which the voting rights can
be exercised

(All listed companies are located under the same address as MassMutual as long as nothing else is indicated).

MASSMUTUAL BARING HOLDING LLC
1295 State Street
Springfield, Massachusetts 01111

MASSMUTUAL HOLDINGS (BERMUDA) LIMITED
Canons`s Court
22 Victoria Street
Hamilton HM 12, Bermuda

BARING ASSET MANAGEMENT LIMITED
BARING FUND MANAGERS LIMITED
England & Wales – 2915887
155 Bishopsgate
London, EC2M 3XY

OPPENHEIMER ACQUISITION CORP.
OPPENHEIMERFUNDS, INC.
225 Liberty Street
New York, New York 10281

OFI INSTITUTIONAL ASSET MANAGEMENT, INC.
225 Liberty Street
New York, New York 10281

Baring Asset Management Limited is controlled by MassMutual Holdings (Bermuda) Limited which in turn is controlled by MassMutual Baring Holding LLC. MassMutual Baring Holding LLC is controlled by MM Asset Management Holding LLC which in turn is controlled by MassMutual Holding LLC. MassMutual Holding LLC is finally controlled by MassMutual.

OppenheimerFunds, Inc is controlled by Oppenheimer Acquisition Corp. which in turn is controlled by MM Asset Management Holding LLC. MM Asset Management Holding LLC is controlled by MassMutual Holding LLC which is finally controlled by MassMutual.

OFI Institutional Asset Management, Inc. is controlled by OppenheimerFunds, Inc. OppenheimerFunds, Inc. is controlled by Oppenheimer Acquisition Corp. which is in turn controlled by MM Asset Management Holding LLC. MM Asset Management Holding LLC is controlled by MassMutual Holding LLC which is finally controlled by MassMutual.

(iii) Date on which the threshold of 4 % was exceeded
January 30, 2013