Shareholding Disclosure

General Shareholder Disclosure Obligations under the

Norwegian Securities Trading Act of 29 June 2007 No 75

1. Issuer: Petroleum Geo-Services ASA

2. Date when the threshold was reached or passed:

September 23rd, 2010

3. Date on which the notification duty arose (if

other than in 2 above):

4. Name of the person obliged to notify, and, if

voting rights are separated from the ownership of

shares, the name of the shareholder:

AllianceBernstein L.P.

Address: 1345 Avenue of the Americas

Postal code: NY 10105

Residence: New York

Country: USA

5. Name and qualification of the signatory: Hinde

Idrissi - Compliance

6. Number of shares/rights to shares encompassed by

the notification: 10,042,084

Number of voting rights encompassed by the

notification: 10,042,084

7. Percentage and number of shares and voting rights

now held by the notifying entity and its Close

Associates (if any): 5.07%

8. Event that triggered the notification

(acquisition, subscription, sale, "passive" crossing

etc). If the event that triggered the notification

was related to a Close Associate of the notifying

entity, please specify: Acquisition of voting shares

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