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 Nomor Surat                           L9.013C-2026.159

 Nama Perusahaan                       Elnusa Tbk

 Kode Emiten                           ELSA

 Lampiran                              2
                                       Sumur Semberah-206 Lampaui Target Produksi, Elnusa Perkuat Rekam Jejak
 Perihal
                                       Operational Excellence di Bisnis Hulu


Dengan ini kami untuk dan atas nama perusahaan menyampaikan Laporan Informasi atau Fakta Material sebagai
berikut:

 Nama Emiten atau Perusahaan Publik            Elnusa Tbk

 Bidang Usaha                                  Jasa Energi



 Telepon                                       (021) 788-30850

 Faksimili                                     (021) 788-30883

 Alamat Surat Elektronik (email)               corporate@elnusa.co.id


 Tanggal Kejadian                              27 Agustus 2026
 Jenis Informasi atau Fakta Material           Sumur Semberah-206 Lampaui Target Produksi, Elnusa
                                               Perkuat Rekam Jejak Operational Excellence di Bisnis Hulu

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Uraian Informasi atau Fakta Material   Jakarta, 26 Agustus 2026 - PT Elnusa Tbk (IDX: ELSA),
                                       perusahaan jasa energi terintegrasi yang tergabung dalam
                                       Subholding Upstream Pertamina, kembali menunjukkan
                                       kapabilitas operational excellence pada layanan hulu migas
                                       melalui keberhasilan pengeboran Sumur Semberah-206
                                       (SEM-20-US) milik PT Pertamina Hulu Sanga-Sanga (PHSS)
                                       Zona 9 di Kutai Kartanegara, Kalimantan Timur. Bertindak
                                       sebagai drilling contractor melalui Rig EMR-001, Elnusa
                                       mendukung operasi pengeboran hingga uji produksi yang
                                       menghasilkan initial production lebih dari dua kali target awal.
                                       Kegiatan pengeboran yang dimulai pada 4 Juni 2026
                                       diselesaikan dalam 45 hari dan mencapai tahap uji produksi
                                       pada 19 Agustus 2026. Hasil pengujian mencatat initial
                                       production sebesar 5,36 MMSCFD gas dan 406 BOPD
                                       minyak, dibandingkan target awal sebesar 2,1 MMSCFD gas
                                       dan 175 BOPD minyak. Capaian tersebut setara sekitar 255%
                                       dari target gas dan 232% dari target minyak, sekaligus
                                       menunjukkan kontribusi nyata aktivitas pengeboran dalam
                                       membuka dan mengoptimalkan potensi produksi aset hulu.
                                       Corporate Secretary Elnusa, Rustam Aji, mengatakan bahwa
                                       keberhasilan tersebut mencerminkan positioning Elnusa
                                       sebagai solution partner yang tidak hanya berorientasi pada
                                       penyelesaian pekerjaan, tetapi juga pada penciptaan nilai dan
                                       peningkatan produktivitas aset pelanggan. "Bagi Elnusa,
                                       operational excellence bukan hanya mengenai kemampuan
                                       menyelesaikan pengeboran dengan aman dan andal. Nilai
                                       tambahnya terletak pada bagaimana kompetensi, aset,
                                       teknologi, dan pengalaman yang kami miliki dapat mendukung
                                       pelanggan mengoptimalkan potensi aset dan produksi. Hasil
                                       Sumur Semberah-206 menjadi salah satu bukti konkret dari
                                       kapabilitas tersebut," ujar Rustam.
                                       Keberhasilan operasi didukung kemampuan Elnusa
                                       mengoperasikan Rig EMR-001 untuk pengeboran berarah
                                       hingga kedalaman akhir 11.685 ftMD. Sumur Semberah-206
                                       menghasilkan produksi dari layer F083A, I089A, dan I072A
                                       dengan kondisi tekanan reservoir yang baik. Dalam
                                       pelaksanaannya, Elnusa mengintegrasikan keandalan rig,
                                       kompetensi kru, pengendalian operasi, serta disiplin eksekusi
                                       untuk menjaga kegiatan pengeboran berjalan efektif sesuai
                                       parameter operasi yang ditetapkan.
                                       Keandalan eksekusi juga ditopang oleh disiplin HSSE sebagai
                                       fondasi operasi Elnusa. Di tengah dinamika teknis termasuk
                                       kondisi well control, tim Elnusa melakukan penanganan secara
                                       cepat dan terkoordinasi dengan tetap mengedepankan
                                       keselamatan. Hingga pelaksanaan operasi, Rig EMR-001
                                       membukukan 75.600 safe man hours sejak tajak sumur,
                                       memperkuat rekam jejak Elnusa dalam menjalankan pekerjaan
                                       berisiko tinggi secara aman dan terkendali.
                                       Keberhasilan Semberah-206 semakin memperkuat rekam
                                       jejak layanan drilling Elnusa sebagai salah satu kompetensi
                                       strategis di segmen Upstream Oil & Gas Services. Kapabilitas
                                       tersebut dibangun melalui kombinasi aset yang andal,
                                       technical expertise, pengalaman operasi, teknologi, serta
                                       kemampuan mengintegrasikan berbagai layanan untuk
                                       menjawab kebutuhan pelanggan yang semakin kompleks.
                                       Kompetensi ini menjadi salah satu competitive advantage
                                       Elnusa dalam menangkap peluang dari aktivitas eksplorasi,
                                       pengembangan lapangan, dan optimalisasi produksi migas
                                       nasional.
                                       "Ke depan, kami akan terus meningkatkan produktivitas dan
                                       competitiveness layanan drilling melalui penguatan teknologi,
                                       kompetensi SDM, serta optimalisasi aset. Fokus kami adalah
                                       memastikan setiap kapabilitas yang dimiliki Elnusa dapat

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                                           menghasilkan customer value sekaligus sustainable business
                                           value, sehingga membuka ruang pertumbuhan bagi Perseroan
                                           sejalan dengan meningkatnya kebutuhan optimalisasi aset
                                           hulu migas," tambah Rustam.
                                           Melalui penguatan operational excellence di seluruh lini bisnis,
                                           Elnusa terus mempertegas perannya sebagai perusahaan jasa
                                           energi terintegrasi yang mampu menghadirkan solusi dari
                                           eksplorasi hingga produksi. Konsistensi tersebut menjadi
                                           bagian dari strategi Perseroan untuk memperkuat daya saing,
                                           memperluas peluang pertumbuhan, dan menciptakan nilai
                                           berkelanjutan bagi pelanggan serta pemegang saham,
                                           sekaligus mendukung peningkatan produksi dan ketahanan
                                           energi nasional.

                                           Sekilas Elnusa (IDX: ELSA)
                                           PT Elnusa Tbk (Elnusa) merupakan Anak Perusahaan PT
                                           Pertamina Hulu Energi (PHE) yang tergabung dalam
                                           Subholding Upstream Pertamina, bergerak dalam bidang jasa
                                           energi yang terintegrasi untuk memberikan solusi total.
                                           Ketangguhan dan inovasi telah menjadi karakter dasar Elnusa
                                           selama lebih dari 56 tahun dalam industri energi, memiliki
                                           kompetensi inti pada jasa hulu migas terintegrasi, penjualan
                                           barang dan jasa distribusi & logistik energi serta jasa
                                           penunjang migas. Lini jasa hulu migas terintegrasi meliputi
                                           jasa Geoscience & Reservoir (land, transition zone & marine
                                           serta data processing), jasa pengeboran & pemeliharaan
                                           lapangan migas (drilling & workover), jasa engineering,
                                           procurement, construction & operation maintenance (EPC-
                                           OM). Lini penjualan barang dan jasa distribusi & logistik energi
                                           meliputi jasa transportasi BBM, pengelolaan depot, dan
                                           penjualan chemical. Lini jasa penunjang migas meliputi jasa
                                           marine support, fabrikasi, hingga manajemen data. Elnusa
                                           terus berkomitmen menerapkan Tata Kelola Perusahaan
                                           sesuai dengan prinsip-prinsip GCG dan juga ESG untuk
                                           mewujudkan Perusahaan yang berdaya saing tinggi, terus
                                           tumbuh dan memberikan kebermanfaatan yang keberlanjutan
                                           untuk seluruh pemangku kepentingan. Informasi lebih lanjut
                                           dapat diakses pada www.elnusa.co.id

Dampak kejadian, informasi atau fakta      Tidak ada dampak
material tersebut terhadap kegiatan
operasional, hukum, kondisi keuangan,
atau kelangsungan usaha Emiten atau
Perusahaan Publik



Demikian untuk diketahui.


Hormat Kami,
Elnusa Tbk




Sevy Liana

Manager Corporate Governance & BOD Support




Elnusa Tbk
Graha Elnusa, Jl. TB Simatupang Kav. 1B, Jakarta 12560

Page 4
Telepon : (021) 788-30850, Fax : (021) 788-30883, www.elnusa.co.id



Nama Pengirim                     Sevy Liana

Jabatan                           Manager Corporate Governance & BOD Support
Tanggal dan Waktu                 27-08-2026 08:41

Lampiran                          1. Siaran Pers - Rekam jejak Operational Excellence.pdf


                                  2. Press Release - Operational Excellence.pdf


Dokumen ini merupakan dokumen resmi Elnusa Tbk yang tidak memerlukan tanda tangan karena dihasilkan secara
  elektronik oleh sistem pelaporan elektronik. Elnusa Tbk bertanggung jawab penuh atas informasi yang tertera
                                               didalam dokumen ini.

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Go To Indonesian Page

 Letter / Announcement No.           L9.013C-2026.159

 Issuer Name                         Elnusa Tbk

 Issuer Code                         ELSA

 Attachment                          2

 Subject                             Semberah-206 Well Exceeds Production Targets, Elnusa Strengthens Its
                                     Operational Excellence Track Record in the Upstream Business

The company hereby announce the Material Information or Facts Report as follows

 Name of Issuer or Public Company            Elnusa Tbk

 Business Activities                         Jasa Energi


 Telephone                                   (021) 788-30850

 Faximile                                    (021) 788-30883

 Email Address                               corporate@elnusa.co.id


 Date of Event                               27 August 2026

                                             Semberah-206 Well Exceeds Production Targets, Elnusa
 Type of Material Information or Facts       Strengthens Its Operational Excellence Track Record in the
                                             Upstream Business

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Description of Material Information or   Jakarta, August 26, 2026 - PT Elnusa Tbk (IDX: ELSA), an
Facts                                    integrated energy services company and a member of
                                         Pertamina Subholding Upstream, has once again
                                         demonstrated its operational excellence capabilities in
                                         upstream oil and gas services through the successful drilling of
                                         the Semberah-206 (SEM-20-US) Well, owned by PT
                                         Pertamina Hulu Sanga-Sanga (PHSS) Zone 9 in Kutai
                                         Kartanegara, East Kalimantan. Acting as the drilling contractor
                                         utilizing the EMR-001 Rig, Elnusa supported drilling operations
                                         up to the production testing phase, which yielded an initial
                                         production of more than double the initial target.
                                         The drilling activities, which commenced on June 4, 2026,
                                         were completed in 45 days and reached the production testing
                                         phase on August 19, 2026. The testing results recorded an
                                         initial production of 5.36 MMSCFD of gas and 406 BOPD of
                                         oil, compared to the initial targets of 2.1 MMSCFD of gas and
                                         175 BOPD of oil. This achievement is equivalent to
                                         approximately 255% of the gas target and 232% of the oil
                                         target, concurrently demonstrating the tangible contribution of
                                         drilling activities in unlocking and optimizing the production
                                         potential of upstream assets.
                                         Elnusa's Corporate Secretary, Rustam Aji, stated that this
                                         success reflects Elnusa's positioning as a solution partner
                                         oriented not only toward task completion but also toward value
                                         creation and the enhancement of customer asset productivity.
                                         "For Elnusa, operational excellence is not solely about the
                                         ability to complete drilling safely and reliably. The added value
                                         lies in how our competencies, assets, technologies, and
                                         experience can support customers in optimizing asset and
                                         production potential. The results of the Semberah-206 Well
                                         serve as concrete evidence of these capabilities," said
                                         Rustam.
                                         The operational success was supported by Elnusa's capability
                                         to operate the EMR-001 Rig for directional drilling to a final
                                         depth of 11,685 ftMD. The Semberah-206 Well generates
                                         production from layers F083A, I089A, and I072A with favorable
                                         reservoir pressure conditions. In its execution, Elnusa
                                         integrated rig reliability, crew competency, operational control,
                                         and execution discipline to ensure that drilling activities ran
                                         effectively according to the established operational
                                         parameters.
                                         Execution reliability was also underpinned by HSSE discipline
                                         as the foundation of Elnusa's operations. Amid technical
                                         dynamics, including well control conditions, the Elnusa team
                                         managed the situation swiftly and in a coordinated manner
                                         while continually prioritizing safety. Up to the operational
                                         execution, the EMR-001 Rig recorded 75,600 safe man-hours
                                         since the well spudding, strengthening Elnusa's track record in
                                         executing high-risk operations safely and under control.
                                         The success of Semberah-206 further solidifies the track
                                         record of Elnusa's drilling services as a strategic competency
                                         within the Upstream Oil & Gas Services segment. This
                                         capability is built upon a combination of reliable assets,
                                         technical expertise, operational experience, technology, and
                                         the ability to integrate various services to address increasingly
                                         complex customer needs. This competency serves as one of
                                         Elnusa's competitive advantages in capturing opportunities
                                         from exploration activities, field development, and the
                                         optimization of national oil and gas production.
                                         "Moving forward, we will continue to enhance the productivity
                                         and competitiveness of our drilling services by strengthening
                                         technology, human capital competencies, and asset
                                         optimization. Our focus is to ensure that every capability

Page 7
                                            possessed by Elnusa can generate customer value as well as
                                            sustainable business value, thereby unlocking growth space
                                            for the Company in line with the increasing need for upstream
                                            oil and gas asset optimization," added Rustam.
                                            By strengthening operational excellence across all business
                                            lines, Elnusa continues to reaffirm its role as an integrated
                                            energy services company capable of providing solutions from
                                            exploration to production. This consistency is part of the
                                            Company's strategy to strengthen competitiveness, expand
                                            growth opportunities, and create sustainable value for
                                            customers and shareholders, while simultaneously supporting
                                            the enhancement of national energy production and security.

                                            About Elnusa (IDX: ELSA)
                                            Elnusa is a subsidiary of PT Pertamina Hulu Energi (PHE),
                                            which is part of the Pertamina Upstream Subholding, operating
                                            in the field of integrated energy services to provide total
                                            solutions. Elnusa has a DNA of resilience and innovation for
                                            over 56 years in the energy industry, with core competencies
                                            in upstream oil and gas services, energy distribution and
                                            logistics services, as well as support services. The upstream
                                            oil and gas services line includes Geoscience & Reservoir
                                            services (land, transition zone & marine, as well as data
                                            processing), drilling & field maintenance services (drilling &
                                            workover), engineering, procurement, construction & operation
                                            maintenance (EPC-OM) services. The energy distribution and
                                            logistics services line includes fuel transportation services,
                                            depot management, and chemical sales. The support services
                                            line includes marine support services, fabrication, and data
                                            management. Elnusa is committed to implementing Corporate
                                            Governance in accordance with GCG principles to realize a
                                            highly competitive, continuously growing company and provide
                                            sustainability for all stakeholders. For more information, please
                                            visit www.elnusa.co.id.

 Impact of event, material information or   No impact
 facts towards Issuers or Public
 Company’s operational activities, legal,
 financial condition, or going concern




Thus to be informed accordingly.


Respectfully,
Elnusa Tbk




Sevy Liana

Manager Corporate Governance & BOD Support




Elnusa Tbk
Graha Elnusa, Jl. TB Simatupang Kav. 1B, Jakarta 12560
Phone : (021) 788-30850, Fax : (021) 788-30883, www.elnusa.co.id

Page 8
Sender Name                         Sevy Liana

Function                            Manager Corporate Governance & BOD Support

Date and Time                       27-08-2026 08:41

Attachment                         1. Siaran Pers - Rekam jejak Operational Excellence.pdf


                                   2. Press Release - Operational Excellence.pdf


  This is an official document of Elnusa Tbk that does not require a signature as it was generated electronically by
 the electronic reporting system. Elnusa Tbk is fully responsible for the information contained within this document.


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Names mentioned 6 people and organisations named in the text · linked when the evidence is strong

linked person Rustam Aji p.2 ×2
linked org PT Pertamina Hulu Energi p.3 ×3
possible org Elnusa Tbk · Nama Perusahaan p.1 ×17
unresolved org PT Pertamina Hulu Sanga-Sanga p.2 ×2
unresolved person Sevy Liana · Manager Corporate Governance & BOD Support p.3 ×2
unresolved org BOD Support Elnusa Tbk p.3 ×2

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