1

INTERIM RESULTS

PRESENTATION

25 SEPTEMBER 2017

JOHN WARDLE

NICK HARRISON

A Latin American Producer & Explorer

www.amerisurresources.com

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These presentation materials do not constitute or form part of any offer for sale or subscriptionor any solicitation for any offer to buy or subscribe for any securities nor shall they or any partof them form the basis of or be relied upon in connection with any contract or commitmentwhatsoever. No responsibility or liability whatsoever is accepted by any person for any losshowsoever arising from any use of, or in connection with, these presentation materials or theircontents or otherwise arising in connection therewith.

These presentation materials may contain forward-looking statements relating to the futureprospects, developments and strategies of Amerisur Resources plc (the "Company"), whichare based on directors' current expectations and assumptions and involve known andunknown risks and uncertainties that could cause actual results, performance or events todiffer materially from those expressed or implied in such statements. Each forward-lookingstatement speaks only as of the date of the particular statement and, except as required bylaw or regulations to which the Company is subject, the Company disclaims any obligationto update any such forward-looking statement to reflect future events or developments.

DISCLAIMER

IMPORTANT NOTICE

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E&P COMPANY FOCUSED ON THE UNDER-EXPLORED PUTUMAYO REGION

Experienced Board and management team

• Strong, in-country management / operational team

Owner and operator of strategic export infrastructure, the OBA, delivering world-class operating margins

at $15/bbl opex and significant production growth potential

• Reliable, low cost route to commercialisation with technical capacity of 50,000 bbl/d to support future

growth

Extensive licence portfolio delivering exploration success, value creation & significant future drilling news

flow

• Opportunistic resource growth via corporate and asset acquisitions during the down cycle

• Up to 16 fully funded exploration and development wells planned in the next 18 months

• 1,497 MMBO unrisked resources

Robust financial position

• $29m cash at 30 June 2017, debt free, significant tax losses and positive operating cash flow

COMPANY OVERVIEW – INVESTMENT HIGHLIGHTS

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BRAZIL

ECUADOR

PERU

COLOMBIA

Pacific OceanLLANOS

MIDDLE MAGDALENA

Andaquies (Operator)

Working interest: 100%

Put-30 (Operator)

Working interest: 100%

Coati (Operator)

Working interest: 100% Temblon field, 60% exploration area

Mecaya

Working interest: 58% Put-9 (Operator)

Working interest: 100%

Terecay (Operator)

Working interest: 100%

Tacacho (Operator)

Working interest: 100%

Put-12 (Operator)

Working interest: 60%

Put-8 (Vetra Operator)

Working interest: 50%

PUTUMAYO

Platanillo (Operator)

Working interest: 100%

Fenix

Working interest: 100% In process of Relinquishment

CPO-5

Working interest: 30%

COMPANY OVERVIEW

EXPERIENCED COLOMBIAN OPERATOR

Market Statistics

Symbol (AIM) AMER

Market Capitalisation(close 22 Sept 2017)

£197m

Operational Statistics

2P Reserves 24.5 mmboe

Average Daily Production (August 2017)

5,834 BOPD

2017 Target Exit Production 7,000+ BOPD

Netbacks at $45 oil $30/bbl

Built and owns strategic OBA transfer line to Ecuador

Portfolio

Size 12 blocks, 984,000 Ha (Gross)

Prospects 26+ identified

Resources (Unrisked)

1,497 mmbo

*

OBA pipeline*

*Some interests awaiting approval by ANH

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STRENGTHENED AND REFRESHED BOARD AND MANAGEMENT TEAM

BOARD and MANAGEMENT

Giles Clarke, Chairman John Wardle, CEO Nick Harrison, CFO Douglas Ellenor, NEDStephen Foss, NED

Alex Snow, SIDChris Jenkins, NED Dana Coffield, NED

Carlos Martinez

Country Manager

Board:

In country team:

Johnnie Velasco

Operations ManagerFernando Rueda

Financial Manager

Edgar Herazo

Production Manager

Hernan Antolinez

Geological Manager

Recently appointed Directors:

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Leveraging our strategic position in the Putumayo basin through the drill bit

DELIVERING GROWTH THROUGH FOCUSSED PRODUCTION

INCREASES AND EXPLORATION SUCCESS

Growing our low cost production base and OBA throughput

OUR STRATEGY

Put-9

Working interest: 100%Size: 49,150,5 Ha

Platanillo

Working interest: 100%Size: 11,119.4 Ha

OBA pipeline*

*

Put-12

Working interest: 60%Size: 54,434 Ha

Put-8

Working interest: 50%Size: 41,604,6 Ha

0

100,000

200,000

300,000

400,000

500,000

600,000

Q4 2016 Q1 2017 Q2 2017 Q3 2017 (est) Q4 2017 (est)

OBA Throughput (Quarterly)

Delivering improved reliability and economics

(BO

PD

)

2017-2018 FOCUS

(BO

)

0

1000

2000

3000

4000

5000

6000

2016 H1 2016 H2 2017 H1 2017 H2

Half-year Production Growth (BOPD)

Achieved Estimated

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OBA – PIPELINE CAPACITY AND FUTURE STRATEGY

$15OPEX/BL @

7,000 BOPD

(including

transport costs)

6,332September average BO

operational days to date

OBA export achieved

THE OBA – STRATEGIC EXPORT INFRASTRUCTURE

Throughput increase strategy

Short Term:• Chiritza re-pumping station

• 3rd export pump in Colombia to

increase throughput to 1,200BOPH and

redundancy

• VHR spares & generation

• Cuyabeno pumps, metering

• Result: 10kBOPD+ available capacity

Medium Term:• Connection from Roda to Andes line

at Km22 (30 kBOPD available capacity)

Long Term:• RODA twinning or direct line to Lago

Agrio

Chiritza

Cuyabeno

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18 MONTHS WORK PROGRAMME, FULLY FUNDED AT $45 OIL

FOCUSSED ON CORE OBA AREA

CONTINUING WORK PROGRAMME

Platanillo: (Amerisur 100%, Operator)

Put 9: (Amerisur 100%, Operator)

Unrisked resource: 211.9 MMBOE (gross)

Work programme 3 wells

CAPEX $11m

Unrisked resource: 26MMBO (gross)

Work programme: 2-3 wells

CAPEX $10.5m

Significant upside potential:

• U and T Sand development –Pad 2N

• N Sand central anomaly

Work programme 5 wells - 2 development, 1 exploration, 2 appraisal

CAPEX $24.5m

Unrisked resource: 53.5 MMBOE

Work programme: 3 wells

CAPEX $17m

Unrisked resource: 142.3MMBO (net)

Work programme 2 wells and LTT

CAPEX $5m

Put-12: (Amerisur 60%, Operator)

Put-8: (Amerisur 50%)

CPO-5: (Amerisur 30%)

Put-9Working interest: 100%

PlatanilloWorking interest: 100%

OBA pipelineObjective is to tie back all oil to the OBA

*CPO-5Working interest: 30%

Put-12Working interest: 60%

Put-8Working interest: 50%

*

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Jan 2016: Platino Energy

Dec 2016: Talisman

Price paid: minimal costs

Unrisked prospective resources: 245.9MMBO

Price paid: $6m

Tax losses: $57m ($20m Net)

Unrisked prospective resources: 131.3MMBO

$/bl of prospective resources: NEGATIVE

Terecay

Andaquies

Coati PUT 8

PUT 30

PUT 9

Mecaya

Platanillo

PUT 12

Tacacho

LLANOS

COLOMBIA

MAP OF ACQUISITIONS

Price paid: $7m

Tax loses: $24m ($8.4m Net) Farm Out:+$7m

Unrisked prospective resources: 190MMBO

$/bl of prospective resources: NEGATIVE

SUCCESSFULLY DELIVERED ACCRETIVE STRATEGIC ACQUISTIONS

Price paid: $4.85m (Net $600k)

Unrisked prospective resources: 321MMBO $/bl of prospective resources: ±ZERO

Mar 2017: Pacific Exploration &

Production subsidiaries

MA

NA

GEM

EN

T’S A

CTI

ON

S

Exploration failure and tightening markets led

PetroDorado to seek a buyer. Amerisur rejected

3 of 5 blocks, acquiring only CPO-5 (Mariposa

light oil discovery) and key block Tacacho

(49.5%)

Private owner decided to exit Putumayo.

Opportunistic offer. Subsequently farmed out a

further 20% of Coati Exploration area for $7m

work commitment. Tax losses $8.4m Net to

Amerisur. Key position in Put-8

Repsol acquired Talisman and decided to exit

Putumayo. Opportunistic offer. Key starter

position in Put-9 plus outstanding 50% of Put-30

Pacific parent company restructured in Canada.

Amerisur made unsolicited approach and

offered a direct negotiation. 4 out of 6 Putumayo

blocks selected. $4.25m outstanding farm in

payment (PDSA to Pacific) cancelled by this

transaction. Achieved 100% in Put-9 and key

position in eastern Putumayo

June 2015: Petro Dorado South

America SA

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FINANCIALS

42m

1m

Cashflow H1 2017

0

5

10

15

20

25

30

35

40

45

Sales Operating

costs

Royalties Transport

costs

High prices

tariff

Admin

costs (UK &

Colombia)

EBITDA H1

2017

US$

EBITDA H1 2017

Average selling price approx. at a $4.5 discount to Brent

8m

0

10

20

30

40

50

60

Jan-16 May-16 Aug-16 Nov-16 Mar-17 Jun-17

Revenue per barrel - 2016 & 2017

Revenue per barrel Average Brent oil price

Operating netback per barrel ($)

11.4 4.8

15.8

12.9

11.2 29.6

0

5

10

15

20

25

30

35

40

45

50

FY 2016 H1 2017

Operating netback Operating costs Transport costs

Brought

forward cash

Jan 17

EBITDA Other w/c

movements

Asset

acquisitions

Capex Tax/financing Cash at 30

June 2017

5m

16m

1m 29m

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PRODUCTION

PRODUCTION

• H1 2017 average production

of 4,475 BOPD

• Average production for

August 5,834 BOPD

• FY 2017 exit rate of +7,000

BOPD driven by increased

production from the ongoing,

low-cost drilling programme

at Platanillo and CPO-5,

delivering FY 2017 average

production of 5,000 BOPD

• Focus is to increase

production to 20,000 BOPD in

the medium term

• Diversifying production base

from 1 to 3 fields by end of

2018

• Production to fund

exploration programme

2017 exit production

2017 production

6,300

7,000+

BO

PD

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

10,000

PR

OD

UC

TIO

N

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1 Growing Low Cost Production Base –focus on Putumayo core assets around OBA

▪ Prime position in under explored basin.

▪ Low cost onshore operation with short lead time from exploration to production

▪ Maximise value from producing assets

▪ Plan to increase production to 20,000 bopd in the medium term through ongoing development and exploration while

growing OBA throughput, diversifying production base from 1 to 3 fields by end of 2018

2 Own Strategic Export Infrastructure

▪ Amerisur’s OBA pipeline, direct from its Platanillo field to the Ecuadorian export pipeline system was commissioned in

October 2016

▪ Provides a reliable, low cost route (opex/bbl inc. transportation $15, netbacks of $30 at $45 oil) to commercialisation

with technical capacity of 50,000 to support future growth

▪ Ability to grow OBA throughput through focused investment

3 Extensive Growth Portfolio

▪ 12 blocks covering c.984,000 Ha (gross) predominantly in the prolific Putumayo - proven oil basin with light to heavy oil

gradation in excellent reservoirs, big field potential in Colombian terms

▪ Significant future upside at Platanillo – T and N sand

▪ Advance light oil prospects first, followed by heavy oil

▪ Exploration portfolio of more than 26 identified prospects targeting 1,497 mmbo of unrisked resources

▪ Up to 16 fully funded wells to the end of 2018

4 Robust Financial

Position

▪ Fully funded work programme at $45 oil and well positioned to pursue organic and inorganic growth – continuing to

consider acquisitions in Putumayo which have strong strategic fit

▪ Debt free balance sheet and cash of $29m as at 30 June 2017, positive operating cashflow

5 Experienced Board and Management Team

▪ Experienced and strengthened Board with CEO and management based in Colombia enabling streamlined decision

making

▪ Extensive experience of operating in country with strong community relations developed over the course of a decade

INVESTMENT HIGHLIGHTS

FINANCIALLY AND OPERATIONALLY WELL PLACED WITH A CLEAR STRATEGY TO MAXIMISE

POTENTIAL OF EXTENSIVE PORTFOLIO AND TO CONTINUE TO DELIVER SHAREHOLDER VALUE

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END