Petroleum Geo-Services ASA :Mandatory notification of trade


1. Employees in PGS have on August 1, 2012 exercised a total number of 557.373
options. Following the exercise, 557.373 shares will be transferred from Petroleum
Geo-Services holding of own shares.

Subsequent to the transaction Petroleum Geo-Services ASA holds 879 424 own
shares. 

2. Options exercised by primary insiders on August 1st, 2012:

Joanna Oustad has exercised 1 667 options in the Company, corresponding to
1 667 shares at the strike price of NOK 39.19.

Magne Reiersgard has exercised 20 000 options in the Company, corresponding to
20 000 shares at the strike price of NOK 39.19.

Sverre Strandenes has exercised 30 000 options in the Company, corresponding to
30 000 shares at the strike price of NOK 39.19.

Terje Bjølseth has exercised 15 000 options in the Company, corresponding to
15 000 shares at the strike price of NOK 39.19.

Tore Langballe has exercised 15 000 options in the Company, corresponding to
15 000 shares at the strike price of NOK 39.19.

David J Dakin has exercised 4 000 options in the Company, corresponding to
4 000 shares at the strike price of NOK 39.19.

3. Transfer of rights

On August 1, 2012, the primary insider mentioned below transferred the rights to receive shares resulting from the exercise of options to a third party. The payment was determined based on a selling price of NOK 89.15 per right.

Magne Reiersgard transferred 20 000 rights.

Sverre Strandenes transferred 30 000 rights.

Terje Bjølseth transferred 15 000 rights.

Tore Langballe transferred 15 000 rights.

David J Dakin transferred 4 000 rights.

4. New holding

After exercising options, Joanna Oustad holds 5 000 unexercised options, corresponding to 5 000 shares at the strike price of NOK 131.95, 5 000 unexercised options in the Company, corresponding to 5 000 shares at the strike price of NOK 77.29 and 5 000 unexercised options in the Company, corresponding to 5 000 shares at the strike price of NOK 76.02. As of today the primary insider holds 10 161 shares in the company and 8 000 restricted share units.

After exercising options, Magne Reiersgard holds 60 000 unexercised options, corresponding to 60 000 shares at the strike price of NOK 131.95, 45 000 unexercised options in the Company, corresponding to 45 000 shares at the strike price of NOK 77.29, 45 000 unexercised options in the Company, corresponding to 45 000 shares at the strike price of NOK 76.02 and 20 000 unexercised options in the Company, corresponding to 20 000 shares at the strike price of NOK 39.19. As of today the primary insider holds 11 177 shares in the company and 18 000 restricted share units.

After exercising options, Sverre Strandenes holds 90 000 unexercised options, corresponding to 90 000 shares at the strike price of NOK 131.95, 45 000 unexercised options in the Company, corresponding to 45 000 shares at the strike price of NOK 77.29, 45 000 unexercised options in the Company, corresponding to 45 000 shares at the strike price of NOK 76.02 and 30 000 unexercised options in the Company, corresponding to 30 000 shares at the strike price of NOK 39.19. As of today the primary insider holds 11 962 shares in the company and 19 000 restricted share units.

After exercising options, Terje Bjølseth holds 40 000 unexercised options, corresponding to 40 000 shares at the strike price of NOK 131.95, 20 000 unexercised options in the Company, corresponding to 20 000 shares at the strike price of NOK 77.29, 20 000 unexercised options in the Company, corresponding to 20 000 shares at the strike price of NOK 76.02 and 25 000 unexercised options in the Company, corresponding to 25 000 shares at the strike price of NOK 39.19. As of today the primary insider holds 5 809 shares in the company and 8 000 restricted share units.

After exercising options, Tore Langballe holds 40 000 unexercised options, corresponding to 40 000 shares at the strike price of NOK 131.95, 20 000 unexercised options in the Company, corresponding to 20 000 shares at the strike price of NOK 77.29, 20 000 unexercised options in the Company, corresponding to 20 000 shares at the strike price of NOK 76.02 and 25 000 unexercised options in the Company, corresponding to 25 000 shares at the strike price of NOK 39.19. As of today the primary insider holds 4072 shares in the company and 8 000 restricted share units.

After exercising options, David J Dakin holds 25 000 unexercised options, corresponding to 25 000 shares at the strike price of NOK 131.95, 10 000 unexercised options in the Company, corresponding to 10 000 shares at the strike price of NOK 77.29, 10 000 unexercised options in the Company, corresponding to 10 000 shares at the strike price of NOK 76.02 and 8 334 unexercised options in the Company, corresponding to 8 334 shares at the strike price of NOK 39.19. As of today the primary insider holds 3 831 shares in the company and 2 500 restricted share units

This information is subject of the disclosure requirements pursuant to section 5-12 of the Norwegian Securities Trading Act.