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No. 030/GEMS-CS/IV/2026 Jakarta, 10 April 2026
Kepada Yth.:
Direksi PT Bursa Efek Indonesia
Gedung Bursa Efek Indonesia Tower I
Jln. Jend. Sudirman Kav 52-53
Jakarta 10190
U.p. : : Kepala Divisi Penilaian Perusahaan 2) /
Head of Corporate Valuation Division 2
Perihal : Laporan Aktivitas Eksplorasi periode Q1 2026 Subject : Exploration Activity Q1 2026 Report
Dengan hormat, Sincerely,
Sehubungan dengan Peraturan PT Bursa Efek Indonesia In accordance to Indonesia Stock Exchange Regulation
Nomor I-E tanggal 12 Desember 2025 tentang Kewajiban No. I-E dated 12 December 2025 concerning
Penyampaian Informasi, maka dengan ini kami Information Submission Obligation, we hereby submit
sampaikan Laporan Aktivitas Eksplorasi Pertambangan the Exploration Activity for the period of Q1 2026 of the
periode Q1 2026 di lingkungan anak-anak Perusahaan Company’s subsidiaries as attached.
PT Golden Energy Mines Tbk (“Perseroan”) sebagaimana
terlampir.
Dalam hal terdapat perbedaan penafsiran In the event there is any difference of
informasi yang diumumkan dalam Bahasa Inggris dan interpreting the information notified in English
Bahasa Indonesia, maka informasi yang digunakan language and Indonesian language, the Indonesian
sebagai acuan adalah informasi dalam Bahasa language shall prevail.
Indonesia.
Demikian kami sampaikan. Atas perhatiannya kami Thank you for your attention and co-operation.
ucapkan terima kasih.
Hormat kami/Sincerely yours,
PT Golden Energy Mines Tbk
Sudin, SH
Corporate Secretary
Tembusan/Copies :
- Direksi Perseroan/Board of Directors of the Company.
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 2
1. PT Kuansing Inti Makmur (“KIM”) dan anak perusahaan
(KIM Blok) / and its subsidiaries (KIM Block)
Tidak ada kegiatan eksplorasi di area KIM Blok pada There is no exploration activity in the mine area of
periode Q1 2026. KIM Block for the period of Q1 2026.
2. PT Borneo Indobara (“BIB”)
2.1. Daerah Eksplorasi 2.1. Exploration Activity
Kegiatan pengeboran eksplorasi meliputi 3 kegiatan Exploration drilling activities include 3 main
utama, yaitu pengeboran eksplorasi preproduksi, activities, namely preproduction exploration
pengeboran eksplorasi pengembangan, dan drilling, development exploration drilling, and
pengeboran geoteknik. geotechnical drilling.
Kegiatan pengeboran preproduksi dilakukan untuk Preproduction drilling activities are carried
melengkapi data pemodelan geologi dan kualitas out to complement geological modeling data
batubara pada masing-masing area. Pengeboran and coal quality in each area. Development
eksplorasi pengembangan bertujuan untuk exploration drilling aims to obtain lithology
mendapatkan data litologi dan kualitas batubara and coal quality data for geological modeling
untuk pembuatan model geologi serta mendukung and to support the addition of new coal
penambahan sumberdaya batubara baru pada area resources in areas where exploration has
yang belum pernah dilakukan kegiatan eksplorasi. never been carried out. Geotechnical drilling
Kegiatan pengeboran geoteknik dilakukan untuk activities are carried out to determine the
mengetahui daya dukung tanah dan sifat fisik carrying capacity of the soil and the physical
batuan pada area pit penambangan dan disposal properties of the rock in the mining area and
serta di area project perusahaan. disposal area in the company.
Kegiatan pengeboran periode Q1 2026 dilakukan Drilling activities in Q1 2026 were carried out
pengeboran eksplorasi preproduksi di area by preproduction exploration in North
Girimulya Utara dan pengeboran geoteknik di area Girimulya and geotechnical drilling in
Sebambang bawah. Sebamban bawah.
2.2. Metode Pengeboran 2.2. Drilling Methods
Pada periode Q1 2026, pengeboran eksplorasi For the period of Q1 2026, preproduction
preproduksi dilakukan dengan metode open hole exploration drilling was carried out using
sedangkan pengeboran geoteknik dilakukan dengan open holes, while geotechnical drilling was
menggunakan metode SPT. Kegiatan geofisika carried out by SPT method. Geophysical
logging dilakukan di seluruh lubang bor yang telah logging activities are carried out in all drilled
selesai dilakukan untuk memastikan kedalaman top holes that have been completed to ensure
dan bottom batubara sehingga ketebalan batubara the depth of the top and bottom of the coal
dapat diketahui lebih akurat dan untuk mengetahui so that the thickness of the coal can be
varian dan karakteristik batuan non batubara known more accurately and to determine the
berdasarkan perekaman gelombang gamma ray dan characteristics of non-coal rock based on
density. recording gamma ray waves and density.
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 3
2.3. Pelaksanaan dan Pengawasan Kegiatan Eksplorasi 2.3. Exploration Activities Progress & Supervision
Kegiatan pengeboran eksplorasi dan geoteknik Exploration and geotechnical drilling activities
dilakukan oleh Departemen Survey, Geotech & carried out by the Survey, Geotech &
Exploration (SGE) BIB. Exploration (SGE) Department of BIB.
Untuk mendukung kegiatan pengeboran eksplorasi To support the preproduction exploration
preproduksi dan eksplorasi pengembangan berupa drilling and development exploration
pengeboran open hole dan coring digunakan 2 unit activities such as open hole and coring
rig inhouse yaitu 1 unit tipe Jacro 175 dan 1 unit tipe geotechnical drilling, units type of inhouse rig
Jacro 500. Untuk pengeboran geoteknik dengan were used, which are 1 unit Jacro 175 and 1
metode SPT digunakan 1 (satu) unit rig tipe Jacro unit Jacro 500. For the geotechnical drilling
200. Seluruh unit rig dioperasikan oleh drilling by SPT method, it used 1 unit jacro 200. All
operator BIB. rig units were operated by BIB drilling
operator.
Seluruh kegiatan pengeboran disupervisi langsung All drilling activities are directly supervised by
oleh Wellsite Geologist, Departemen SGE dan the Wellsite Geologist, SGE Department and
Evaluator Geologist Departemen Strategic, Plan & Geologist Evaluator, Strategic, Plan &
Optimization (SPO), seluruhnya dibawah Divisi Mine Optimization (SPO) Department, all under the
Development & Contract Management (MDC) BIB. Mine Development & Contract Management
(MDC) Division of BIB.
2.4. Kemajuan Eksplorasi 2.4. Exploration Progress
Kegiatan pengeboran eksplorasi selama periode Q1 Drilling exploration for the period of Q1 2026
2026 adalah sebagai berikut : are as follows :
Tabel 1.1. Kemajuan Pengeboran Ekplorasi dan Geoteknik periode Q1 2026/
Progress in Exploration and Geotechnical Drilling Period of Q1 2026
Lubang Geoteknik (m) / Lubang Eksplorasi (m) /
Geotech Drilling Exploration Drilling
Lokasi Jumlah Total kedalaman (m) / Jumlah Total kedalaman (m) /
Location lubang Total Depth lubang Total Depth
/ /
Total Drilling Logging Total Drilling Logging
Holes Holes
Girimulya Utara - - - 30 3.294 3.148,98
Sebamban Bawah 3 63 62,80
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 4
2.5. Biaya Eksplorasi 2.5. Drilling Cost
Untuk biaya eksplorasi selama periode Q1 2026 The exploration costs for the period of Q1
adalah sebagai berikut : 2026 are as follows :
Tabel 1.2. Biaya Pengeboran Eksplorasi dan Geoteknik RIG Inhouse periode Q1 2026 /
Exploration and Geotechnial Drilling Cost for the period of Q1 2026
Year to Date
Operating Expense
Anggaran / Plan (Rp) Realisasi / Realisation (Rp)
Biaya Pengeboran / Rp. 1.484.601.990,- Rp. 1.451.627.990,-
Drilling Cost
3. PT Trisula Kencana Sakti (TKS)
Tidak ada kegiatan eksplorasi di area TKS pada periode There is no exploration activity in the mine area of
Q1 2026. TKS for the period of Q1 2026.
4. PT Berkat Satria Abadi (BSA) dan PT Wahana Rimba
Lestari (WRL)
Tidak ada kegiatan eksplorasi di area BSA dan WRL pada There is no exploration activity in the mine area of
periode Q1 2026. BSA and WRL for the period of Q1 2026.
5. PT Barasentosa Lestari (BSL)
5.1. Daerah Eksplorasi 5.1. Daerah Eksplorasi
Kegiatan pengeboran eksplorasi BSL periode Q1 Drilling activities of BSL in Q1 2026 was
2026 dilakukan di area sebagai berikut: conducted in the following area:
a. Blok Muara Lakitan dengan tipe pengeboran a. Muara Lakitan Block area and the drilling
meliputi pengeboran open hole, coring (partial types included open hole, coring (partial)
coring) dan full coring untuk mendapatkan and full coring to collect samples for coal
sample kualitas batubara dan sample quality and geotechnical samples,
geoteknik, serta dilengkapi dengan pengukuran including geophysical logging
Geofisika Logging dan Pick Up Survey titik bor. measurements and drillhole pick up
b. Blok Belani pada area Disposal dan Low Wall survey.
dengan tipe pengeboran open hole dan coring b. Belani block area and the drilling types
bagian dari bor Geotek SPT. included open hole and partial coring for
SPT drilling.
5.2. Metode Pengeboran 5.2. Drilling Method
a. Pelaksanaan pengeboran pada blok Muara a. Drilling activities at Muara Lakitan Block is
Lakitan dilaksanakan dengan memakai sistem carried out using a grid system, with
grid, dengan jarak antara cross line 300-1.000 300-1,000 meter distance of cross line
meter dan jarak antar lubang bor 50-300 and 50-300 meter drill hole spacing,
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 5
meter, mengikuti jurus dan kemiringan (down follow the strike and dip of coal seam
dip) pelapisan batuan hingga kedalaman with maximum Depth around 60-150
maksimal 60-150 meter. Hal ini bertujuan meter. The purpose of grid system and
untuk memaksimalkan stripping ratio (SR) dan control maximum Dept for determine of
kemenerusan batubara. optimization stripping ratio (SR) and
continuity of coal.
b. Pelaksanaan pengeboran pada blok Belani b. Drilling activities at Belani Block was
dilaksanakan dengan memakai sistim grid, carried out using a grid system, with 50–
dengan jarak antara cross line 50-100 m dan 100-meter distance of cross line and 10 -
jarak antar lubang bor 10-75 meter, mengikuti 75-meter drillhole spacing, follow the
jurus dan kemiringan (down dip) perlapisan strike and dip of coal seam with
batuan hingga kedalaman maksimal 60-90 maximum Depth around 60-90 meter.
meter. Hal ini bertujuan untuk memaksimalkan The Purpose of grid system and control
stripping ratio (SR) dan kemenerusan batubara. maximum Depth for determine of
optimalization stripping ratio (SR) and
continuity of coal.
5.3. Pelaksanaan dan Pengawasan Kegiatan Eksplorasi 5.3 Implementation and Supervision of
Exploration Activities
Berikut adalah pelaksanaan dan pengawasan The following are the implementation and
kegiatan pengeboran BSL periode Q1 2026 adalah supervision of drilling activities of BSL for
sebagai berikut: the period of Q1 2026:
a. Blok Muara Lakitan dilakukan oleh PT a. Muara Lakitan Block were carried out
Indonesia Carbon Energy (ICE) dengan 3 by PT ICE with 3 rig units under the
unit rig di bawah supervisi Geologist supervision of the Geologist Section
Section Geology dan Geotech, Departemen Geology and Geotech, BSL's Mine
Mine Planing & Technical Service BSL. Planning & Technical Service
Department.
b. Blok Belani dilakukan oleh tim Eksplorasi b. Belani block were carried out by the
dengan 1 unit rig di bawah supervisi exploration team with 1 rig unit
Geologist Section Geology dan Geotech, under the supervision of Geologist
Departemen Mine Planing & Technical Section Geology and Geotech, BSL’s
Service BSL. Mine Planning & Tecknical Service
Department.
5.4. Kemajuan Eksplorasi 5.4. Drilling Progress
Selama periode Q1 2026 kegiatan pengeboran During Q1 2026, exploration drilling activities
eksplorasi di Blok Muara Lakitan dan Belani telah in Muara Lakitan and Belani Block have
menyelesaikan 40 lubang bor. Total kedalaman completed 40 drill holes. Total drill hole
lubang bor selama periode Q1 2026 adalah Depth in Q1 2026 were 3,649.75 meters as
3.649,75 meter rincian pada tabel 1.3. detailed in table 1.3.
Pengeboran dilakukan dengan tipe pengeboran Drilling was carried out using the partial
partial coring dan full coring dengan tujuan coring and full coring method with the aim of
mendapatkan sample batubara dan sample obtaining coal samples for quality analysis
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 6
batubara untuk dilakukan analisa kualitas dan and geotechnical samples for slope stability
sample geoteknik untuk kestabilan lereng tambang analysis of the mine and disposal areas.
dan disposal.
Tabel 1.3 Kemajuan Pengeboran Ekplorasi BSL Periode Q1 2026 /
BSL Drilling Exploration Progress for the period of Q1 2026
Lubang Eksplorasi (m) /
Exploration Drilling
Lokasi / Jumlah Total kedalaman (m) /
Location lubang / Total Depth
Total (m)
Total Coring Full Coring
Holes Open Holes
(Infill) (Geotech)
Muara Lakitan 38 2.034,91 818,19 736,50 3.589,60
Belani 2 2,20 57,95 60,15
5.3. Biaya Eksplorasi 5.5. Exploration Cost
Untuk biaya eksplorasi selama periode Q1 2026 The exploration costs for the period of Q1
adalah sebagai berikut : 2026 are as follows :
Tabel 1.4. Biaya Pengeboran Eksplorasi BSL periode Q1 2026 /
BSL Drilling Cost for the period of Q1 2026
Year to Date
Operating Expense
Anggaran / Plan (Rp) Realisasi / Realisation (Rp)
Biaya Pengeboran Muala Lakitan /
Rp. 4.431.663.542,83 Rp. 4.785.432.542,83
Muara Lakitan Drilling Cost BSL
Biaya Pengeboran Belani / Belani
Rp. 797,458,012,- Rp. 175.872.753,-
Drilling Cost BSL
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Names mentioned 17 people and organisations named in the text · linked when the evidence is strong
unresolved
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Indonesia Stock Exchange
p.1
unresolved
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PT Golden Energy Mines Tbk Sudin
p.1
unresolved
person
Sudin, SH
· Corporate Secretary
p.1
unresolved
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PT Kuansing Inti Makmur
p.2
unresolved
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Departemen Survey
p.3
unresolved
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Departemen SGE
p.3
unresolved
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Departemen Strategic
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PT Trisula Kencana Sakti
p.4
unresolved
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PT Berkat Satria Abadi
p.4
unresolved
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PT Wahana Rimba Lestari
p.4
unresolved
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PT Barasentosa Lestari
p.4
unresolved
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PT ICE
p.5
unresolved
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Departemen Mine Planing & Technical
p.5
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