Pt Medco Energi Internasional TbkIDX: MEDC

Fact Book Q126

· Issued by Pt Medco Energi Internasional Tbk

MEDCOENERGI

Value. Focus. Growth.



Q1 2026 Fact Book



Contents

Financial Data Q1 2026 Consolidated Financials 4

Consolidated Capex Guidance 5

Operational Data Oil and Gas Production and Lifting 7

Reserves and Resources 8

Asset Portfolio 9 - 10

Simplified Funds Flow Structure 11 - 14

Active Gas Contracts 15 - 17

Debt Info Debt Maturity Profile: Bullet vs Installment Per 31 Mar 2026 19

ESG

Sustainability Report 21

Tracking Our Climate Commitments and ESG Performance 22

2 Value. Focus. Growth.

Financial Data





Balance Sheet (USD mn)

Q1 2026

Q4 2025 YoY ∆%

Cash and cash equivalents1

598

633

(5.5)

Investments

1,908

1,866

2.2

Fixed Assets

3,544

3,637

(2.5)

Total Assets

8,273

8,363

(1.1)

Total Liabilities

5,867

6,003

(2.3)

- Loans

1,708

1,715

(0.4)

- Bonds

1,812

1,932

(6.2)

- Other Liabilities

2,346

2,356

(0.4)

Equity

2,406

2,360

2.0

Q1 2026 Consolidated Financials

Financial Ratios (x)

Q1 2026

Q4 2025 YoY ∆%

Current Ratio

1.1

1.2

(4.9)

Debt to Equity

1.6

1.7

(5.6)

EBITDA to Interest

4.5

4.1

9.7

Net Debt to EBITDA

2.1

2.4

(12.2)

4 1 Includes restricted cash

Value. Focus. Growth.



Consolidated Capex Guidance

E&P1 Capex (USD mn)

E&P Capex

2022

2023

2024

2025

Q1 2026

2026

Guidance

Actual

Facilities

Development Drilling

Exploration

231

262

365

402

88

415

116

121

168

193

22

106

131

176

166

50

10

10

21

43

16

Power2 Capex (USD mn)

Power Capex

2022

2023

2024

2025

Q1 2026

2026

Guidance

Actual

Gas IPP

Geothermal

Solar PV & Other Renewables

33

72

71

35

2

15

29

31

27

23

1

3

40

36

6

1

1

1

8

6

0

1 2024 - 2026 included Oman 60 Capex

5 2 Medco Power Net Working Interest

Value. Focus. Growth.

Operational Data



Production YTD 2026

Oil

Gas

Total

mbopd

mmscfd

mboepd

2.5

352.8

65.9

2.4

99.3

21.7

9.4

79.7

24.5

1.4

41.6

9.4

0.4

16.1

3.3

0.0

18.5

3.2

2.6

2.9

3.1

0.0

13.8

2.4

0.3

15.2

3.1

0.0

6.7

1.2

0.8

2.3

1.2

0.0

3.7

0.7

19.9

652.6

139.7

12.2

8.6

13.8

6.3

0.0

6.3

0.0

0.0

0.0

18.5

8.7

20.1

Lifting YTD 2026

Oil

Gas

Total

mbopd

bbtupd

mboepd

2.5

332.8

60.2

2.5

109.4

21.5

9.7

69.5

21.8

1.4

39.5

8.2

0.4

9.9

2.2

0.0

17.4

3.0

2.6

0.0

2.6

0.0

11.8

2.0

0.3

16.1

3.1

0.0

6.8

1.2

0.5

2.0

0.8

0.0

3.5

0.6

20.0

618.7

127.3

12.2

8.1

13.6

6.6

0.0

6.6

0.0

0.0

0.0

18.8

8.1

20.2

Oil and Gas Production and Lifting

Asset

Working Interest

Indonesia Assets

Corridor

70.0%

Senoro Toili

30.0%

Block B Natuna

40.0%

South Sumatera Block

65.0%

Block A

85.0%

Madura

67.5%

Rimau

65.0%

Lematang

100.0%

Bangkanai

70.0%

Simenggaris

62.5%

Tarakan

100.0%

Sampang

45.0%

Total

International Assets

Oman 60 20.0%

Bualuang 100.0%

Yemen 9 25.0%

Total

Oman KSF

58.5%

Total Production - with Service Contract

8.9 0.0 8.9

8.9 0.0 8.9

38.8 626.8 147.5

38 661 159.8

Total All Production Service Contract

47.3 661.2 168.8

47.7 626.8 156.4

7 Value. Focus. Growth.



Reserves and Resources

As of 31 Mar 2026:

Classification

Proved Reserves

Oil

Gas

Total

mbbls

mmscf

mboe

Proved & Probable Reserves

Oil

Gas

Total

mbbls

mmscf

mboe

Contingent Resources

Oil

Gas

Total

mbbls

mmscf

mboe

Domestic

21,489

829,003 170,323

13,021

716,084 148,759

34,510

1,545,087

319,082

West Indonesia East & Central Indonesia

Total Domestic

International

International Asset 44,560 45,848 53,382

44,560

45,848

53,382

79,071

1,590,936

372,464

Total International

Grand Total

23,667

761,713 162,821

33,905

6,218 35,102

57,572

767,931

197,922

Domestic Proved Developed Reserves International Proved Developed Reserves

Total Proved Developed Reserves

31,581

1,280,929 261,863

20,940

993,694 209,673

52,522

2,274,623

471,537

67,532 59,795 79,038

67,532

59,795

79,038

120,054

2,334,418

550,575

33,224

2,093,995 402,549

17,950

984,035 196,944

51,175

3,078,030

599,493

14,406 3,105,057 554,396

14,406

3,105,057

554,396

65,581

6,183,087

1,153,889

FY 2025 2P Reserves Life Index (RLI)

Years

11.4

FY 2025 2P Reserves Replacement Ratio (RRR)

5 - Years Average (%)

206

FY 2025 2P Finding, Development and Acquisition Cost

5 - Years Average (USD/boe)

5.6

8 Value. Focus. Growth.



Asset Portfolio - Indonesia Assets

Asset

Working Interest

Expiry

Area (Km2)

Q1 2026 Production (MBOEPD)

Operator

Partner

Type of Contract

Profit Share to Contractor1 (%)

Crude Oil

Natural Gas

Corridor

70.0%

2043

2,095

65.9

MedcoEnergi

Pertamina Hulu Energi Corridor 30%

PSC Cost Recovery

22.29

39

Senoro-Toili

30.0%

2047

451

21.7

JOB Pertamina -

MedcoEnergi

Pertamina 50%

Tomori E&P Limited 20%

PSC Cost Recovery

35

40

South Natuna Sea Block B

40.0%

2028

11,155

24.5

MedcoEnergi

Medco Daya Natuna 35%

Prime Natuna Inc. 25%

PSC Cost Recovery

15

35

South Sumatra Block

65.0%

2033

3,279

9.4

MedcoEnergi

Medco Daya Makmur 35%

PSC Cost Recovery

12.5

27.5

Block A, Aceh

85.0%

2031

1,361

3.3

MedcoEnergi

Medco Daya Energi Nusantara 15%

PSC Cost Recovery

15

40

Madura Offshore - Meliwis

77.5%

2027

849

3.2

MedcoEnergi

Petronas 22.5%

PSC Cost Recovery

20

35

Madura Offshore - Peluang

and Maleo

67.5%

MedcoEnergi

Petronas 22.5%

Petrogas Pantai Madura 10%

PSC Cost Recovery

20

35

Rimau

60.0%

2043

1,101

3.1

MedcoEnergi

Bahtera Daya Makmur 35%

Sumsel Energi Rimau 5%

PSC Gross Split

58 - 61

48

Lematang

100.0%

2027

233

2.4

MedcoEnergi

-

PSC Cost Recovery

15

29.5

Bangkanai

70.0%

2033

1,385

3.1

MedcoEnergi

Saka Bangkanai Klemantan 30%

PSC Cost Recovery

15

35

Simenggaris2

62.5%

2028

546

1.2

JOB Pertamina -

MedcoEnergi

Pertamina Hulu Energi Simenggaris

37.5%

PSC Cost Recovery

15

35

Tarakan

100.0%

2042

179

1.2

MedcoEnergi

-

PSC Gross Split

58 - 63

65 - 67

Sampang

45.0%

2027

534

0.7

MedcoEnergi

Singapore Petroleum Sampang 40% Cue Sampang Energy Pty 15%

PSC Cost Recovery

20

35

Sakakemang

45.0%

2040

536

-

MedcoEnergi

PC Sakakemang B.V. (Petronas) 45% MOECO 10%

PSC Cost Recovery

25

35

North Sokang3

100.0%

2040

1,124

-

MedcoEnergi

-

PSC Cost Recovery

35

40

West Bangkanai3

70.0%

2043

5,463

-

MedcoEnergi

Saka Energi Bangkanai Barat 30%

PSC Cost Recovery

25

35

Beluga

100.0%

2053

8,472

-

MedcoEnergi

-

PSC Cost Recovery

40

45

Amanah

40.0%

2054

1,753

-

MedcoEnergi

Sele Raya Sejati 30%

KUFPEC Indonesia 30%

PSC Cost Recovery

40

45

Production Development Exploration

9

1 Effective Prior-Government tax and any potential DMO and any local government taxes.

2 In the process of divestment. Entered into a conditional SPA in Feb 2026.

3 PSC terminated in Nov 2025 and is currently pending government approval.

Value. Focus. Growth.



Asset Portfolio - International Assets

Production Development Exploration

1 Effective Prior-Government tax and any potential DMO and any local government taxes.

10 2 Existing PSC expires 22 Sep 2026. New 20-years PSC signed 31 march 2026, effective 23 Sep 2026

3 R/C ratio: Contractor's Revenue-Over-Cost ratio

4 Mexico Block 10&12 is in relinquishment process, waiting for government approval to close the relinquishment process.

Value. Focus. Growth.



Simplified Funds Flow Structure


Indonesian PSC Cost Recovery

Indonesian PSC Gross Split

Gross Revenue

FTP

Cost Recovery Profit Split

DMO & reimbursement

Taxable Income

Income Tax

Government Contractor

Share Share

Gross Revenue

Government Contractor

Split Split

DMO & reimbursement

Costs

Taxable Income

Income Tax

Government Contractor

Share Share

11 Value. Focus. Growth.



Simplified Funds Flow Structure Indonesian PSC Cost Recovery1 Indonesian PSC Gross Split

$0

$83

Contractor Split6

DMO & reimbursement4

Costs 50%3

Taxable Income

Income Tax5

Contractor Share

$50

$33 = 83 - 50

-$12

FTP 20%

Cost Recovery 50%3

$13

$11

Income Tax5

DMO & reimbursement4

Profit Split 30%

Gross Revenue

Government Share

Government

Split

17%

83%

$17

$12 = 33 * 37.6%

$12

Gross Revenue



$9 $11 = $20 * 56%2

$17

$0

$50

$11 = 28 * 37.6%

$28 = 11 + 17

Taxable Income

-$11

Government Share

Contractor Share

$33 $67 = 11+50+17-11

$29

$71 = 83-12

1 Typical Indonesia PSC Cost Recovery with 65:35 gas split in favor of Government 4 DMO obligation remains exist at 25% Contractor entitlement, but current practice in new PSC, Government reimburse at 100% market price

12 2 56% is Before Tax Gas Split for Contractor = 35% / (1-37.6%)

5 37.6% effective tax rate consist of 22% Corporate Income Tax and 20% Dividend Tax

Value. Focus. Growth.

3 Assume total cost (capex + opex) = 50% of gross revenue 6 83% split consists of 49% Base Split for Gas; 34% Variable Split for Medium Reserve, Onshore and Mature Infrastructure; with 0% Progressive Split



Simplified Funds Flow Structure Thailand Concession Oman EPSA Simplified Cost Recovery

Gross Revenue

Cost Recovery

Government Share

Contractor Share

Special Remuneratory

Benefit

Tax

Government Share

Royalty

Contractor Share

Gross Revenue



Profit Split



13 Value. Focus. Growth.



Simplified Funds Flow Structure

Varies with R/C Ratio

Royalty

Unused Cost Oil/ Gas

Profit Oil/Gas

Export Duty Oil

Supplementary

Payment

Research Cess

Payment

Income Tax

Government Share

Contractor Share

Gross Revenue

Varies with R/C Ratio

Cost Oil/Gas

Malaysian PSC

14 Value. Focus. Growth.



Active Gas Contracts (1)

No.

Asset

Customer

Agreement Date

Commitments

Expiry Date

Total Contract Quantity (TCQ)

Daily Contract Quantity (DCQ)

1

South Natuna Sea Block B

SembGas Singapore

1999-Jan-15

2,888 TBTU

DMR: 185.5 BBTUD (Block B: 90 BBTUD)

2028-Jul-15

2

South Natuna Sea Block B

SembGas Singapore

2023-Jun-05

105 TBTU

40 - 80 BBTUD

2028-Oct-15

3

South Natuna Sea Block B

PT PGN Tbk.

2025-May-21

5,780 TBTU

27 BBTUD

2026-Jun-30

4

Lematang

PT Meppo-Gen

2018-Nov-13

12,805 BBTU

10.8 - 11.6 BBTUD

2027-Dec-31

5

South Sumatera Block

PT Meppo-Gen

2018-Nov-13

27,330 BBTU

9.7 - 14.2 BBTUD

2027-Dec-31

6

Lematang & South Sumatra Block

PT Pupuk Sriwidjaja

2023-Sep-20

41,829 BBTU

5 - 17.63 BBTUD

2033-Nov-27

7

Lematang & South Sumatra Block

PT PLN (Persero)

2017-Sep-19

70,260 BBTU

20 BBTUD

2027-Jan-31

8

South Sumatra Block

PT Mitra Energi Buana

2006-Jul-24

26,172 BBTU

4 BBTUD

2027-Dec-31

9

South Sumatra Block

Medco E&P Rimau

2016-Jan-18

9,015 BBTU

2 BBTUD

2027-Dec-31

10

South Sumatra Block

Perusda Mura Energi

2009-Aug-04

6,039 BBTU

1.35 BBTUD

2027-Dec-31

11

South Sumatra Block

PT PGN (Jargas Palembang)

2022-Mar-15

1,932 MMSCF

0.40 MMSCFD

2033-Nov-27

12

South Sumatra Block

PT PGN (Jargas MUBA)

2018-May-04

871 BBTU

0.25 BBTUD

2027-Jul-20

13

South Sumatra Block

PT Pertamina (Jargas Muara Enim)

2019-Nov-15

855.25 MMSCF

0.25 MMSCFD

2027-Jul-20

14

South Sumatra Block

PT Pupuk Sriwidjaja

2021-Dec-01

45,225 BBTU

5 - 15 BBTUD

2033-Nov-27

15

South Sumatra Block

PT PGN Tbk.

2025-Feb-06

9,686 BBTU

9 BBTUD

2027-Dec-31

16

Simenggaris

PT Kayan LNG Nusantara

2020-May-20

47 TBTU

22 BBTUD

2028-Feb-23

15

Indexed Price GSA

Value. Focus. Growth.



Active Gas Contracts (2)

No.

Asset

Customer

Agreement Date

Commitments

Expiry Date

Total Contract Quantity (TCQ)

Daily Contract Quantity (DCQ)

17

Tarakan

PT PLN Energi Primer Indonesia

2022-Nov-25

2,990 BBTU

2.0 - 3.0 BBTUD

2030-Dec-31

18

Tarakan

PT PGN Tbk.

2024-Jun-21

982.2 MMSCF

0.3 MMSCFD

2030-Dec-31

19

Senoro-Toili

DS-LNG

2009-Jan-22

1,307,508 BBTU

277.5 BBTUD

2027-Dec-03

20

Senoro-Toili

PT Panca Amara Utama

2014-Mar-13

275,750 BBTU

69 BBTUD

2027-Dec-03

21

Senoro-Toili

PT PGN Tbk.

2023-Sep-22

645 BBTU

0.22 BBTUD

2027-Dec-03

22

Senoro-Toili

PT PLN (Persero)

2018-Feb-06

15.63 TBTU

5 BBTUD

2027-Dec-03

23

Block A, Aceh

PT Pertagas Niaga

2015-Jan-27

198 TBTU

54 BBTUD

2031-Aug-31

24

Bangkanai

PT PLN (Persero)

2019-Dec-20

130,000 TBTU

20 BBTUD

2033-Dec-29

25

Sampang

PT PLN Indonesia Power

2003-Jul-19

30.6 TBTU

17-13 BBTUD

2027-Dec-03

26

Madura Offshore - Peluang

PT Sarana Cepu Energi

2024-Jan-01

620 TBTU

0.9 - 1.1 BBTUD

2025-Dec-31

27

Madura Offshore - Meliwis

PT PGN Tbk.

2019-Feb-19

28.3 TBTU

13.7 - 22.2 BBTUD

2027-Dec-03

28

Madura Offshore - Maleo & Peluang

PT PGN Tbk.

2005-May-31

8.0 TBTU

8.5 BBTUD

2027-Dec-03

29

Oman 60

Government of Oman

2011-Oct-11

N/A

Max 90 MMSCFD

2041-Oct-11

16

Indexed Price GSA

Value. Focus. Growth.



Active Gas Contracts (Corridor)

No.

Asset

Customer

Agreement Date

Commitments

Expiry Date

Total Contract Quantity (TCQ)

Daily Contract Quantity (DCQ)

1

Corridor

Gas Supply Pte Ltd

2022-Nov-21

241 TBTU

118 - 136 BBTUD

2028-Dec-31

2

Corridor

PT PGN Tbk.

2023-Dec-19

482.3 TBTU

129 - 271 BBTUD

2028-Dec-31

3

Corridor

PGN Jargas & BBG

2021-Oct-14

Up to 14 TBTU

11 BBTUD

2028-Dec-31

4

Corridor

PT PUSRI

2016-May-25

251.4 TBTU

52 - 78 BBTUD

2028-Dec-31

5

Corridor

Energasindo Heksa Karya

2007-Oct-30

Up to 215.5 TBTU

25 - 30 BBTUD

2033-Dec-31

6

Corridor

PT PLN (Persero)

2015-May-04

Up to 79 TBTU

20 BBTUD

2028-Dec-19

7

Corridor

PT Pertamina Hulu Rokan

2021-Aug-06

203,8 TBTU

50 - 65 BBTUD

2026-Dec-31

17

Indexed Price GSA

Value. Focus. Growth.

Debt Info



Debt Maturity Profile1,2: Bullet vs Installment Per 31 Mar 2026

Restricted Group Debt (USD mn)

Unrestricted Group Debt (USD mn)

377

283

178

148

129

69

148

48

168

536

277

549

Bullet

Installment

655

697

605

IDR Bonds MPI Installment MPI Installment MEP Installment SRB

388

277

331

345

31

52 69 57

1

45 31 42

134

25

8

66

74

250

29

88

51

1 7

29

35

36

1 6 1 6 1 6

2026 2027 2028 2029 2030 2031

onwards

2026 2027 2028 2029 2030 2031

onwards

19

1 Debt numbers include derivatives and exclude unamortized cost

2 Consolidated average loan life 4.7 years

Value. Focus. Growth.

ESG