HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. INVESTORS - OIL SEARCH 2020 saw Oil Search take significant steps to drive capital efficiency, sustainable cost reduction and absolute focus across our

organisation.

CAREERS - OIL SEARCH Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our culture.

ALASKA - OIL SEARCH

In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years.

LICENCE INTERESTS

Notes. 1. The PDL application submitted by the PRL 3 joint venture in respect of the P’nyang field in December 2015 remains pending

Ministerial grant.

HEALTH & SAFETY

Process safety at Oil Search focuses on hydrocarbon loss of containment hazards associated with drilling and production activities. Oil Search has developed a Process Safety Framework to manage the hazards that can lead to loss of life, environmental damage, and loss of assets due to toxic exposures, fires or

explosions.

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides.

PNG - OIL SEARCH

While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003.

DATA CENTRE

Payments to governments (US$'000) Indicator 2020 2019; 2018 Total payments to governments: 114,533: 114,284: 153,276: Payments to governments by country (US$'000)

DIVIDEND SUMMARY

Oil Search Limited’s dividend payment methods. Please note that shareholders have the option of receiving their dividend payments in one of the following four currencies: Australian dollars, US dollars, British pounds or PNG kina.

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. INVESTORS - OIL SEARCH 2020 saw Oil Search take significant steps to drive capital efficiency, sustainable cost reduction and absolute focus across our

organisation.

CAREERS - OIL SEARCH Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our culture.

ALASKA - OIL SEARCH

In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years.

LICENCE INTERESTS

Notes. 1. The PDL application submitted by the PRL 3 joint venture in respect of the P’nyang field in December 2015 remains pending

Ministerial grant.

HEALTH & SAFETY

Process safety at Oil Search focuses on hydrocarbon loss of containment hazards associated with drilling and production activities. Oil Search has developed a Process Safety Framework to manage the hazards that can lead to loss of life, environmental damage, and loss of assets due to toxic exposures, fires or

explosions.

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides.

PNG - OIL SEARCH

While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003.

DATA CENTRE

Payments to governments (US$'000) Indicator 2020 2019; 2018 Total payments to governments: 114,533: 114,284: 153,276: Payments to governments by country (US$'000)

DIVIDEND SUMMARY

Oil Search Limited’s dividend payment methods. Please note that shareholders have the option of receiving their dividend payments in one of the following four currencies: Australian dollars, US dollars, British pounds or PNG kina. INVESTORS - OIL SEARCH This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. CAREERS - OIL SEARCH Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our culture. MANAGEMENT - OIL SEARCH Bart joined Oil Search in 2019 and is responsible for our PNG operations. Bart has over 37 years’ experience in upstream oil and gas. Prior to joining Oil Search in 2019, Bart was Vice President Development at Shell, responsible for all subsurface, drilling and facilities activities between discovery and production for Shell’s operated conventional oil and gas assets. STRATEGY - OIL SEARCH We are recognised for our proven capability to operate in challenging environments, our world-class resource base and our strong track record of working with communities and stakeholders. CONTACT US - OIL SEARCH Papuan Oil Search Limited 1 Bligh Street Sydney NSW 2000 Australia. GPO Box 2442 Sydney NSW 2001 Australia OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides. SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

SOCIAL RESPONSIBILITY PERFORMANCE Samberigi road, that links the south coast road to the Highlands highway, is near-completion. Whilst this report was being compiled, on 26 February 2018, a major PAPUA LNG PROJECT GAS AGREEMENT SIGNED Oil Search Limited Incorporated in Papua New Guinea ARBN 055 079 868 Australia Head office Port Moresby Papua New Guinea Sydney office 1 Bligh Street Sydney NSW 2000 ASX ANNOUNCEMENT APPOINTMENT OF CHIEF FINANCIAL OFFICER Oil Search Limited Incorporated in Papua New Guinea ARBN 055 079 868 Australian Office 1 Bligh Street, Sydney NSW 2000, Australia GPO Box 2442, Sydney NSW 2001, Australia

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

SUSTAINABILITY

Sustainability is embedded across the business and sits at the core of all decisions. It is how we do business. Our Sustainability Strategy sees Oil Search focus its Sustainability efforts under a 7-pillar Sustainability Model for action; with a series of clear commitments on Climate; Environment; Community; Health and Safety; People, Integrity

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8.

PNG - OIL SEARCH

Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

OPERATED PRODUCTION

Operated production. Oil Search operates all of PNG's producing oil fields, which commenced production in the 1990s. Since acquiring operatorship of these mature fields in 2003, we have optimised production through new development wells, workovers and active reservoir management, together with achieving an overall reduction in

facility downtime.

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules. SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

ASX ANNOUNCEMENT APPOINTMENT OF CHIEF FINANCIAL OFFICER Oil Search Limited Incorporated in Papua New Guinea ARBN 055 079 868 Australian Office 1 Bligh Street, Sydney NSW 2000, Australia GPO Box 2442, Sydney NSW 2001, Australia

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

SUSTAINABILITY

Sustainability is embedded across the business and sits at the core of all decisions. It is how we do business. Our Sustainability Strategy sees Oil Search focus its Sustainability efforts under a 7-pillar Sustainability Model for action; with a series of clear commitments on Climate; Environment; Community; Health and Safety; People, Integrity

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8.

PNG - OIL SEARCH

Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

OPERATED PRODUCTION

Operated production. Oil Search operates all of PNG's producing oil fields, which commenced production in the 1990s. Since acquiring operatorship of these mature fields in 2003, we have optimised production through new development wells, workovers and active reservoir management, together with achieving an overall reduction in

facility downtime.

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules. SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

ASX ANNOUNCEMENT APPOINTMENT OF CHIEF FINANCIAL OFFICER Oil Search Limited Incorporated in Papua New Guinea ARBN 055 079 868 Australian Office 1 Bligh Street, Sydney NSW 2000, Australia GPO Box 2442, Sydney NSW 2001, Australia INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

MANAGEMENT - OIL SEARCH Bart joined Oil Search in 2019 and is responsible for our PNG operations. Bart has over 37 years’ experience in upstream oil and gas. Prior to joining Oil Search in 2019, Bart was Vice President Development at Shell, responsible for all subsurface, drilling and facilities activities between discovery and production for Shell’s operated conventional oil and gas assets.

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules. CONTACT US - OIL SEARCH Papuan Oil Search Limited 1 Bligh Street Sydney NSW 2000 Australia. GPO Box 2442 Sydney NSW 2001 Australia SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

JOB SEARCH - OIL SEARCH Any resume, CV or similar document submitted to Oil Search Limited or any of its group companies via this website or by other means by any third party (excluding our PSA partners), including but not limited to any professional search firm or recruitment agency or consultant, will be considered unsolicited and will become the property of Oil Search.

HEALTH & SAFETY

This includes being prepared for emergencies. Each year, Oil Search’s internal audit function develops an annual Health, Safety and Environment audit plan. This is reviewed and approved by the Sustainability Committee. The audit plan is focused on key business risks identified through risk assessments, incidents, past audits and

new activities.

BOARD - OIL SEARCH

Ms Cunningham joined the Board on 26 March 2018. She has more than 35 years of global oil and gas industry experience including senior roles at Amoco and Statoil, and senior executive roles at Texaco, and Noble Energy, where her last role was Executive Vice President responsible for EHSR (Environment, Health, Safety and Regulatory), global exploration and business innovation.

MEET OUR PEOPLE

The Hides gas field, located in PDL 1, was discovered in 1987. Gas from this field is used to supply the Hides Gas-to-Electricity Project, which commenced in 1991 and is operated by Oil Search. The Hides GTE Project consists of a pipeline connecting the Hides 1 and Hides 2 wells to a small gas conditioning plant at the Hides

Production Facility

STUDENTS AND GRADUATES Students and Graduates. Oil Search is committed to developing a future stream of talent through our graduate programme. Oil Search is a great place for PNG graduates to discover and explore their potential. Oil Search provides employees with valuable opportunities to gain experience, skills and vocational qualifications.

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

SUSTAINABILITY

Sustainability is embedded across the business and sits at the core of all decisions. It is how we do business. Our Sustainability Strategy sees Oil Search focus its Sustainability efforts under a 7-pillar Sustainability Model for action; with a series of clear commitments on Climate; Environment; Community; Health and Safety; People, Integrity

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8.

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules.

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

PNG - OIL SEARCH

Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

OPERATED PRODUCTION

Operated production. Oil Search operates all of PNG's producing oil fields, which commenced production in the 1990s. Since acquiring operatorship of these mature fields in 2003, we have optimised production through new development wells, workovers and active reservoir management, together with achieving an overall reduction in

facility downtime.

SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

ASX ANNOUNCEMENT APPOINTMENT OF CHIEF FINANCIAL OFFICER Oil Search Limited Incorporated in Papua New Guinea ARBN 055 079 868 Australian Office 1 Bligh Street, Sydney NSW 2000, Australia GPO Box 2442, Sydney NSW 2001, Australia

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

SUSTAINABILITY

Sustainability is embedded across the business and sits at the core of all decisions. It is how we do business. Our Sustainability Strategy sees Oil Search focus its Sustainability efforts under a 7-pillar Sustainability Model for action; with a series of clear commitments on Climate; Environment; Community; Health and Safety; People, Integrity

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8.

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules.

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

PNG - OIL SEARCH

Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

OPERATED PRODUCTION

Operated production. Oil Search operates all of PNG's producing oil fields, which commenced production in the 1990s. Since acquiring operatorship of these mature fields in 2003, we have optimised production through new development wells, workovers and active reservoir management, together with achieving an overall reduction in

facility downtime.

SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

ASX ANNOUNCEMENT APPOINTMENT OF CHIEF FINANCIAL OFFICER Oil Search Limited Incorporated in Papua New Guinea ARBN 055 079 868 Australian Office 1 Bligh Street, Sydney NSW 2000, Australia GPO Box 2442, Sydney NSW 2001, Australia INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8. MANAGEMENT - OIL SEARCH Bart joined Oil Search in 2019 and is responsible for our PNG operations. Bart has over 37 years’ experience in upstream oil and gas. Prior to joining Oil Search in 2019, Bart was Vice President Development at Shell, responsible for all subsurface, drilling and facilities activities between discovery and production for Shell’s operated conventional oil and gas assets. JOB SEARCH - OIL SEARCH Any resume, CV or similar document submitted to Oil Search Limited or any of its group companies via this website or by other means by any third party (excluding our PSA partners), including but not limited to any professional search firm or recruitment agency or consultant, will be considered unsolicited and will become the property of Oil Search.

BOARD - OIL SEARCH

Ms Cunningham joined the Board on 26 March 2018. She has more than 35 years of global oil and gas industry experience including senior roles at Amoco and Statoil, and senior executive roles at Texaco, and Noble Energy, where her last role was Executive Vice President responsible for EHSR (Environment, Health, Safety and Regulatory), global exploration and business innovation.

HEALTH & SAFETY

This includes being prepared for emergencies. Each year, Oil Search’s internal audit function develops an annual Health, Safety and Environment audit plan. This is reviewed and approved by the Sustainability Committee. The audit plan is focused on key business risks identified through risk assessments, incidents, past audits and

new activities.

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides. STUDENTS AND GRADUATES Students and Graduates. Oil Search is committed to developing a future stream of talent through our graduate programme. Oil Search is a great place for PNG graduates to discover and explore their potential. Oil Search provides employees with valuable opportunities to gain experience, skills and vocational qualifications.

ANNUAL REPORTS

Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

GRADUATE PROGRAMME EMPOWERING PNG The Oil Search Graduate programme is a revised program which was launched in 2014 offering new graduates a blend of on the job and workshop based development. The three year programme consists of three to six placements that are primarily in the graduate’s areas of technical specialty.

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8.

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

DATA CENTRE

15,950. Energy intensity (GJ/'000 boe) Energy intensity of oil and gas production. 576. 500. 502. Investment in renewable energy (US$'000) Total amount invested in biomass. 9,348.

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules.

OPERATED PRODUCTION

Operated production. Oil Search operates all of PNG's producing oil fields, which commenced production in the 1990s. Since acquiring operatorship of these mature fields in 2003, we have optimised production through new development wells, workovers and active reservoir management, together with achieving an overall reduction in

facility downtime.

PNG - OIL SEARCH

Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides. SOCIAL RESPONSIBILITY REPORTS Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8.

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

DATA CENTRE

15,950. Energy intensity (GJ/'000 boe) Energy intensity of oil and gas production. 576. 500. 502. Investment in renewable energy (US$'000) Total amount invested in biomass. 9,348.

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules.

OPERATED PRODUCTION

Operated production. Oil Search operates all of PNG's producing oil fields, which commenced production in the 1990s. Since acquiring operatorship of these mature fields in 2003, we have optimised production through new development wells, workovers and active reservoir management, together with achieving an overall reduction in

facility downtime.

PNG - OIL SEARCH

Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides. SOCIAL RESPONSIBILITY REPORTS Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

MANAGEMENT - OIL SEARCH Bart joined Oil Search in 2019 and is responsible for our PNG operations. Bart has over 37 years’ experience in upstream oil and gas. Prior to joining Oil Search in 2019, Bart was Vice President Development at Shell, responsible for all subsurface, drilling and facilities activities between discovery and production for Shell’s operated conventional oil and gas assets. JOB SEARCH - OIL SEARCH Any resume, CV or similar document submitted to Oil Search Limited or any of its group companies via this website or by other means by any third party (excluding our PSA partners), including but not limited to any professional search firm or recruitment agency or consultant, will be considered unsolicited and will become the property of Oil Search. CONTACT US - OIL SEARCH Papuan Oil Search Limited 1 Bligh Street Sydney NSW 2000 Australia. GPO Box 2442 Sydney NSW 2001 Australia

HEALTH & SAFETY

This includes being prepared for emergencies. Each year, Oil Search’s internal audit function develops an annual Health, Safety and Environment audit plan. This is reviewed and approved by the Sustainability Committee. The audit plan is focused on key business risks identified through risk assessments, incidents, past audits and

new activities.

SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

MEDIA RELEASES

2021 Annual Meeting Expand/Collapse Sub Navigation. Media Toggle Navigation Item. Media POLICIES AND STANDARDS These are set out in the relevant policies, through which the Board directs the Company on key areas of importance that define how we operate. The commitments in these documents form the core of our internal governance structure. 'Our Way' is the Oil Search Management System that defines how we set our policies and procedures and

Company-wide

MEDIA RELEASES

2 May 2019 A Sustainable Future through collaboration: Oil Search meets Landowner Company Leaders

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

JOB SEARCH - OIL SEARCH Any resume, CV or similar document submitted to Oil Search Limited or any of its group companies via this website or by other means by any third party (excluding our PSA partners), including but not limited to any professional search firm or recruitment agency or consultant, will be considered unsolicited and will become the property of Oil Search.

DATA CENTRE

15,950. Energy intensity (GJ/'000 boe) Energy intensity of oil and gas production. 576. 500. 502. Investment in renewable energy (US$'000) Total amount invested in biomass. 9,348.

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides. PNG - OIL SEARCHPNG OIL AND GAS ACTOLIVE OIL PNGFREE OIL RIG SVG Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

SOCIAL RESPONSIBILITY REPORTS Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

JOB SEARCH - OIL SEARCH Any resume, CV or similar document submitted to Oil Search Limited or any of its group companies via this website or by other means by any third party (excluding our PSA partners), including but not limited to any professional search firm or recruitment agency or consultant, will be considered unsolicited and will become the property of Oil Search.

DATA CENTRE

15,950. Energy intensity (GJ/'000 boe) Energy intensity of oil and gas production. 576. 500. 502. Investment in renewable energy (US$'000) Total amount invested in biomass. 9,348.

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides. PNG - OIL SEARCHPNG OIL AND GAS ACTOLIVE OIL PNGFREE OIL RIG SVG Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

SOCIAL RESPONSIBILITY REPORTS Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8.

DATA CENTRE

15,950. Energy intensity (GJ/'000 boe) Energy intensity of oil and gas production. 576. 500. 502. Investment in renewable energy (US$'000) Total amount invested in biomass. 9,348.

SUSTAINABILITY

Sustainability is embedded across the business and sits at the core of all decisions. It is how we do business. Our Sustainability Strategy sees Oil Search focus its Sustainability efforts under a 7-pillar Sustainability Model for action; with a series of clear commitments on Climate; Environment; Community; Health and Safety; People, Integrity CONTACT US - OIL SEARCH Papuan Oil Search Limited 1 Bligh Street Sydney NSW 2000 Australia. GPO Box 2442 Sydney NSW 2001 Australia

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules.

OPERATED PRODUCTION

Operated production. Oil Search operates all of PNG's producing oil fields, which commenced production in the 1990s. Since acquiring operatorship of these mature fields in 2003, we have optimised production through new development wells, workovers and active reservoir management, together with achieving an overall reduction in

facility downtime.

MEET OUR PEOPLE

The Hides gas field, located in PDL 1, was discovered in 1987. Gas from this field is used to supply the Hides Gas-to-Electricity Project, which commenced in 1991 and is operated by Oil Search. The Hides GTE Project consists of a pipeline connecting the Hides 1 and Hides 2 wells to a small gas conditioning plant at the Hides

Production Facility

MEDIA RELEASES

2021 Annual Meeting Expand/Collapse Sub Navigation. Media Toggle Navigation Item. Media

ANNUAL REPORTS

Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

MEDIA RELEASES

2 May 2019 A Sustainable Future through collaboration: Oil Search meets Landowner Company Leaders

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

JOB SEARCH - OIL SEARCH Any resume, CV or similar document submitted to Oil Search Limited or any of its group companies via this website or by other means by any third party (excluding our PSA partners), including but not limited to any professional search firm or recruitment agency or consultant, will be considered unsolicited and will become the property of Oil Search.

DATA CENTRE

15,950. Energy intensity (GJ/'000 boe) Energy intensity of oil and gas production. 576. 500. 502. Investment in renewable energy (US$'000) Total amount invested in biomass. 9,348.

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides. PNG - OIL SEARCHPNG OIL AND GAS ACTOLIVE OIL PNGFREE OIL RIG SVG Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

SOCIAL RESPONSIBILITY REPORTS Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

HOME - OIL SEARCH

Oil Search operates all of PNG’s producing oil fields and holds a 29 per cent interest in the ExxonMobil-operated PNG LNG Project – a world class project exporting to major markets in Asia. We also hold leases in Alaska's Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the INVESTORS - OIL SEARCH 2020 Sustainability Report. This report, which includes a Climate Resilience Addendum, outlines Oil Search’s performance and progress against our sustainability targets and efforts to reduce GHG emissions. It reflects our absolute commitment to a sustainable future; targeting to reduce the GHG intensity of our operated assets

by more than 30%

CAREERS - OIL SEARCH Careers - Oil Search. Home. Careers. Our employees are key contributors to our success. We recognise and value our employees’ hard work, passion and commitment through a competitive remuneration structure with industry leading benefits, and by promoting and embedding a range of diversity and development initiatives in our

culture. Careers.

JOB SEARCH - OIL SEARCH Any resume, CV or similar document submitted to Oil Search Limited or any of its group companies via this website or by other means by any third party (excluding our PSA partners), including but not limited to any professional search firm or recruitment agency or consultant, will be considered unsolicited and will become the property of Oil Search.

DATA CENTRE

15,950. Energy intensity (GJ/'000 boe) Energy intensity of oil and gas production. 576. 500. 502. Investment in renewable energy (US$'000) Total amount invested in biomass. 9,348.

ALASKA - OIL SEARCH

Alaska. In early 2018, Oil Search acquired and assumed operatorship over a world-class portfolio of oil leases on the Alaskan North Slope, USA. The leases acquired contain the Nanushuk oil field in the Pikka Unit, one of the largest conventional oil discoveries made in the United States in the last 30 years. Alaska provides us with

significant

OIL SEARCH LEADERSHIP BEHAVIOURS The six Oil Search Leadership Behaviours describe how we expect our employees and contractors to work. We incorporate these behaviours into all employees’ annual performance assessments, graduate training, leadership development and recruitment guides. PNG - OIL SEARCHPNG OIL AND GAS ACTOLIVE OIL PNGFREE OIL RIG SVG Our Business. PNG. While having been an active explorer in PNG since the 1920s, Oil Search assumed operatorship of the Hides Gas-to-Electricity (GTE) Project in 1998 and all of PNG's producing oil fields in 2003. Since then, we have successfully mitigated the rate of decline from these mature fields, optimised production through

development

SHAREHOLDER ENQUIRIES Please contact Computershare for all shareholding and dividend related queries. Computershare Investor Services Pty Limited. GPO Box 2975

Melbourne VIC 3000

SOCIAL RESPONSIBILITY REPORTS Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

LICENCE INTERESTS

6. In 2020, Lagniappe Alaska LLC, an Affiliate of Armstrong Oil and Gas, LLC. assigned a 50% ownership in certain of these leases to Oil Search. 7. In 2020, Oil Search acquired a 36% ownership interest in leases acquired by North Slope Energy, LLC, an Affiliate of Armstrong Oil and Gas, LLC. 8.

DATA CENTRE

15,950. Energy intensity (GJ/'000 boe) Energy intensity of oil and gas production. 576. 500. 502. Investment in renewable energy (US$'000) Total amount invested in biomass. 9,348.

SUSTAINABILITY

Sustainability is embedded across the business and sits at the core of all decisions. It is how we do business. Our Sustainability Strategy sees Oil Search focus its Sustainability efforts under a 7-pillar Sustainability Model for action; with a series of clear commitments on Climate; Environment; Community; Health and Safety; People, Integrity CONTACT US - OIL SEARCH Papuan Oil Search Limited 1 Bligh Street Sydney NSW 2000 Australia. GPO Box 2442 Sydney NSW 2001 Australia

DIVIDEND SUMMARY

Dividend Reinvestment Plan. The Dividend Reinvestment Plan (“DRP”) gives eligible shareholders the opportunity to reinvest some or all of their Oil Search eligible dividends in additional Oil Search shares, free of brokerage and transaction costs, as described fully in this booklet which contains a summary of the DRP and the DRP rules.

OPERATED PRODUCTION

Operated production. Oil Search operates all of PNG's producing oil fields, which commenced production in the 1990s. Since acquiring operatorship of these mature fields in 2003, we have optimised production through new development wells, workovers and active reservoir management, together with achieving an overall reduction in

facility downtime.

MEET OUR PEOPLE

The Hides gas field, located in PDL 1, was discovered in 1987. Gas from this field is used to supply the Hides Gas-to-Electricity Project, which commenced in 1991 and is operated by Oil Search. The Hides GTE Project consists of a pipeline connecting the Hides 1 and Hides 2 wells to a small gas conditioning plant at the Hides

Production Facility

MEDIA RELEASES

2021 Annual Meeting Expand/Collapse Sub Navigation. Media Toggle Navigation Item. Media

ANNUAL REPORTS

Legal information and terms of use © 2016 Oil Search Limited All

Rights Reserved

MEDIA RELEASES

2 May 2019 A Sustainable Future through collaboration: Oil Search meets Landowner Company Leaders

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RISING TO THE CHALLENGE_ WHATEVER THE ENVIRONMENT

Annual Report 2019

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Oil Search commences operating cost reductions

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Computershare letter to security holders regarding 2019 final dividend paid 24 March 2020 Social Responsibility

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OUR HISTORY

With 90 years of experience, Oil Search is PNG's largest company and investor. With a clear strategy to future growth, we are working closely with joint venture partners, regulators, governments, landowners and communities to ensure long-term, mutually beneficial

outcomes.

INSPIRED LOCALLY

We work collaboratively with our joint venture partners, communities and governments to develop PNG’s resources in a responsible and

equitable manner.

Find out more about our PNG assets

ACHIEVING GLOBALLY

Oil Search's purchase of world class oil assets in Alaska’s North Slope (USA) is consistent with our stated strategy to pursue material, high-returning, international liquids opportunities to complement our high-quality PNG gas assets. Find out more about our Alaska assets

How We Work

SOCIAL RESPONSIBILITY Oil Search's commitment to social responsibility and sustainable development is fundamental to maintaining a stable operating

environment in PNG.

Learn about the ways we are ensuring a sustainable future

What We Do

OIL SEARCH FOUNDATION By working in close partnership with a range of stakeholders at the local and national level, Oil Search Foundation addresses the country’s significant challenges by delivering targeted programmes to improve the lives of Papua New Guineans. See how Oil Search Foundation is changing the lives of Papua New

Guineans

Careers

CAREERS AT OIL SEARCH Oil Search operates in some of the most extraordinary environments and terrain around the world. It is exploration, drilling, production and distribution on a large scale – but with a small company feel. Join the Oil Search team

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