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Page 1 OCR 0.928
PT. INTI BANGUN SEJAHTERA, Tbk.

INNOVATIVE SOLUTION PROVIDER

No.: 049/IBST-CSY/VI/2026

Kepada Yth. / To:

Direksi PT Bursa Efek Indonesia/

Board of Directors of Indonesia Stock Exchange
Gedung Bursa Efek Indonesia Menara 1, Lt. 4

Jl. Jend. Sudirman Kav. 52-53

Jakarta 12190, Indonesia.

U.p. / Attn.

Bapak Adi Pratomo Aryanto

Jakarta, 10 Juni 2026

Kepala Penilaian Perusahaan 2 / Head of Listing 2 Division

Perihal / Re.

Laporan Hasil Paparan Publik Tahunan 2026 PT Inti Bangun Sejahtera Tbk

(“Perseroan”) / Report of 2026 Annual Public Expose Result of PT Inti
Bangun Sejahtera Tbk (the “Company”).

Dengan hormat,

Kami merujuk kepada butir 1II.3.3.4 Keputusan
Direksi BEI No. Kep-00087/BEI/12-2025 tanggal
diberlakukan 12 Desember 2025 tentang Perubahan
Peraturan No. I-E tentang Kewajiban Penyampaian
Informasi dan Surat Perseroan No. 040/1BST-
CSYN/2026 tanggal 19 Mei 2026 perihal
Keterbukaan Informasi atas Rencana
Penyelenggaraan Paparan Publik Tahunan 2026
Perseroan (“Public Expose”), bersama ini kami
informasikan bahwa Perseroan telah
menyelenggarakan Public Expose, dengan laporan
pelaksanaan sebagai berikut:

Dear Sir,

Referring to Point III.3.3.4 Decree of BEI No. Kep-
00087/BEI/12-2025, effective as of 12 December
2025, concerning the Amendment to Regulation
No. I-E regarding Information Disclosure
Obligations and the letter of the Company No.
040/IBST-CSY/V/2026 dated 19 May 2026
regarding Disclosure of Information on the Plan for
the 2026 Annual Public Expose of the Company
(“Public Expose”), we hereby inform you that the
Company has held the Public Expose with the
following report:

1. Pelaksanaan Public Expose / Details of Public Expose:

Hari/Tanggal
Day/Date
Waktu

Time
Tempat
Location

Jumat/Friday, 5 Juni/June 2026
Pkl. 11.00 — 11.30 WIB

Zoom Webinar

2. Manajemen Perseroan yang hadir pada saat pelaksanaan Public Expose /
The Management of the Company that attended the Public Expose:

Direktur Utama

President Director

Direktur

Director

Direktur

Director

Direktur & Sekretaris Perusahaan
Director & Corporate Secretary

Bapak/Mr. Ramadhan Kurnia Nusa
Bapak/Mr. Doni Wilaga Kusuma
Ibu/Mrs. Catherine Sembiring Pelawi

Ibu/Ms. Suciratin

Public Expose dihadiri juga oleh Bapak Adam Gifari, selaku Advisor — Group Investor Relations.

The Public Expose was also attended by Mr. Adam Gifari, as Advisor — Group Investo
Relations. e

Menara BCA Lantai 49
Jl. M.H. Thamrin No. 1,
Vakarta Pusat - 10310
Phone : 46221 23585549!
www.ibstower.com

PT: INTIIBANGUN SEJAHTERA, Tbk.
Page 2 OCR 0.949
PT. INTI BANGUN SEJAHTERA, Tbk.

INNOVATIVE SOLUTION PROVIDER

3. Daftar peserta yang hadir pada saat pelaksanaan Public Expose 2026 adalah sebagaimana
dilampirkan pada Lampiran 1 dari surat ini.

List of participants that attended the 2026 Public Expose is attached in Attachment 1 of this
letter.

4. Ringkasan pertanyaan dan jawaban yang disampaikan pada saat pelaksanaan Public Expose
2026 adalah sebagaimana dilampirkan pada Lampiran 2 surat ini.

Summary of guestions and answers discussed during the 2026 Public Expose is attached in
Attachment 2 of this letter.

Demikian penyampaian, atas perhatian dan Thus, we convey this information. Thank you for
kerjasamanya kami ucapkan terima kasih. your attention and cooperation.

Hormat kami /Yours faithfully,
PT Inti Bangun Sejahtera Tbk

Suciratin
Direktur & Sekretaris Perusahaan
Director & Corporate Secretary

Menara BCA Lantai 49
Jl. M.H. Thamrin No. 1

SEJAHTERA, Tbk.

www.ibstower.com

Page 3 OCR 0.841
PT. INTI BANGUN SEJAHTERA, Tbk.

INNOVATIVE SOLUTION PROVIDER

Lampiran/Attachment 1

DAFTAR HADIR PESERTA PAPARAN PUBLIK TAHUNAN 2026 /
LIST OF ATTENDANCE OF 2026 ANNUAL PUBLIC EXPOSE OF
PT INTI BANGUN SEJAHTERA TBK

: | Nama/Name 2 2 Media .
il Yuliana Hema Kontan
2 Muhammad Ghafur Fadillah Investor Daily
3 Satya Budi Ipotnews
4. Seno Sulistiyono Tribun News
5. Rizki Vauzi EmitenNews
6. Kiki Kompas.com
7 Taufan Sukma IDX Channel
8. William Investor
9. Deffandi Nasrul Investor
10. Daniel Investor
1. Gerdyan Hidayat Investor
12 Hafiyyan Bisnis Indonesia
13. Jeremy Geofany Investor
14. | Vla Sibarani Investor

PT. INTIIBANGUN SEJAHTERA, Tbk.

Menara BCA Lantai 49
JI- M.H: Thamrin No: 1,
Jakarta Pusat - 10310
Phone : 46221 23585549
www.ibstower.com
Page 4 OCR 0.922
PT. INTI BANGUN SEJAHTERA, Tbk.

INNOVATIVE SOLUTION PROVIDER

Lampiran / Attachment 2

RINGKASAN PERTANYAAN & JAWABAN PAPARAN PUBLIK TAHUNAN 2026 /
SUMMARY OF @UESTIONS & ANSWERS 2026 ANNUAL PUBLIC EXPOSE
PT INTI BANGUN SEJAHTERA Tbk

1. Ibu/Mrs. Yuliana Hema — Kontan
Pertanyaan 1 Sejauh ini Perseroan telah memiliki lebih dari 3.200 menara dan hampir 19.500
@uestion kilometer jaringan serat optik. Bagaimana strategi Perseroan untuk
mengoptimalkan pemanfaatan aset-aset tersebut?

The Company currently owns and operates more than 3,200
Telecommunications towers and approximately 19,500 kilometers of fiber optic
network. Could the Company elaborate on its strategies to optimize the
Utilization of these assets?

Jawaban 1 Fokus utama Perseroan saat ini adalah meningkatkan utilisasi dan produktivitas
Answer aset yang telah dimiliki. Untuk bisnis menara, Perseroan terus mendorong
peningkatan kolokasi dan penambahan penyewa pada lokasi-lokasi yang sudah
ada. Sementara untuk bisnis serat optik, kami berupaya meningkatkan
monetisasi jaringan melalui layanan connectivity, backhaul, metro-E, leased
line, serta berbagai solusi berbasis serat optik lainnya. Selain itu, dengan
adanya sinergi bersama Grup PT Profesional Telekomunikasi Indonesia
(“Protelindo”) dan Grup PT Iforte Solusi Infotek (“Iforte”) beserta anak-anak
perusahaan lainnya, Perseroan memiliki peluang yang lebih besar untuk
mengoptimalkan pemanfaatan aset secara terintegrasi, memperluas basis
pelanggan, serta meningkatkan efisiensi pengelolaan infrastruktur yang dimiliki.

The Company's current primary focus is to enhance the utilization and
productivity of its existing assets. In the tower business, the Company continues
to drive higher colocation rates and increase the number of tenants at existing
tower sites. Meanwhile, in the fiber optic business, the Company seeks to further
monetize its network through the provision of connectivity, backhaul, Metro-E,
leased line, and various other fiber-based solutions. In addition, through
synergies with PT Profesional Telekomunikasi Indonesia (“Protelindo”) Group
and PT Iforte Solusi Infotek (“Iforte”) Group, as well as their respective
subsidiaries, the Company has greater opportunities to optimize the integrated
Utilization of its assets, expand its customer base, and improve the efficiency of
its infrastructure management.

2. Bapak/Mr. Rizki Vauzi - EmitenNews
Pertanyaan 1 Sepanjang 2025, Perseroan mencatatkan peningkatan EBITDA yang kuat,
Guestion dengan marjin yang mencapai lebih dari 90Yo. Apa faktor utama yang
mendorong peningkatan profitabilitas tersebut?

Throughout 2025, the Company recorded strong EBITDA growth, with an
EBITDA margin exceeding 9046. What were the key factors that contributed to
this improvement in profitability?

Menara BCA Lantai 49
Jl: M.H. Thamrin No. 1,
Jakarta Pusat - 10310
Phone: 16221/23585549,
www.ibstower.com

PT. INTI BANGUN SEJAHTERA, Tbk.

Page 5 OCR 0.919
PT. INTI BANGUN SEJAHTERA, Tbk.

INNOVATIVE SOLUTION PROVIDER

Jawaban 1 Bergabungnya Perseroan ke dalam Grup Protelindo memberikan banyak

Answer manfaat strategis, baik dari sisi operasional, keuangan, maupun pengembangan
bisnis. Perseroan memperoleh akses terhadap skala usaha yang lebih besar,
penerapan best practice yang lebih luas, serta berbagai peluang sinergi yang
dapat meningkatkan efisiensi dan daya saing. Dampak positifnya mulai terlihat
pada perbaikan profitabilitas dan penguatan struktur keuangan Perseroan
sepanjang tahun 2025. Tercermin dengan adanya peningkatan EBITDA margin
dari 67,24 pada tahun 2024 menjadi 90,7Yo pada tahun 2025.

The Company's integration into the Protelindo Group has provided significant
strategic benefits across operational, financial, and business development
aspects. The Company has gained access to a larger scale of operations,
broader implementation of best practices, and various synergistic opportunities
that enhance efficiency and competitiveness. The positive impact of this
integration has begun to be reflected in the Company's improved profitability and
Strengthened financial position throughout 2025, as evidenced by the increase
in EBITDA margin from 67.24 in 2024 to 90.796 in 2025.

3. Bapak/Mr. Satya Budi - Ipotnews
Pertanyaan 1 Dalam pemaparan Pubex yang disampaikan, disebutkan bahwa Perseroan
Guestion akan mengembangkan jaringan Metro-E dan layanan berbasis serat optik.
Seberapa besar potensi kontribusi bisnis ini terhadap pendapatan perseroan
dalam beberapa tahun mendatang?

In the Public Expose presentation, the Company indicated its intention to expand
its Metro-E network and fiber optic-based services. How significant is the
potential contribution of these businesses to the Company's revenue in the

coming years?
Jawaban 1 Saat ini, bisnis non tower Perseroan menyumbang sekitar 2676 dari total
Answer pendapatan perusahaan (Fiber to the Tower/FTTT (2492), Fiber to the Homel

FTTH (196) dan Connectivity (1”6)). Kedepannya, Perseroan dan Manajemen
akan berupaya untuk meningkatkan aset menara dan serat optik serta
meningkatkan utilisasinya seperti tenancy ratio dan utilization ratio.

Currently, the Company's non-tower business contributes approximately 264 of
the Company's total revenue (comprising Fiber-to-the-Tower/ETTT (2496),
Fiber-to-the-Home /FTTH (196), and Connectivity services (146)). Going forward,
the Company and its Management will continue to expand its tower and fiber
optic assets while enhancing their utilization, including by improving key
operational metrics such as tenancy ratios and network utilization rates.

Menara BCA Lantai 49,
Jl. M.H. Thamrin No.1,
Jakarta Pusat - 10310
Phone : 46221 23585549
www.ibstower.com

PT: INTI BANGUN SEJAHTERA, Tbk.

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Names mentioned 16 people and organisations named in the text · linked when the evidence is strong

linked org Inti Bangun Sejahtera Tbk p.1 ×27
linked person Adam Gifari p.1 ×3
linked org PT Iforte Solusi Infotek p.4 ×3
possible org PT Bursa Efek Indonesia p.1 ×2
possible person Suciratin · Direktur & Sekretaris Perusahaan p.2
unresolved org Indonesia Stock Exchange p.1
unresolved person Adi Pratomo Aryanto p.1
unresolved person Ramadhan Kurnia Nusa Bapak p.1 ×2
unresolved person Doni Wilaga Kusuma Ibu p.1 ×2
unresolved person Catherine Sembiring Pelawi Ibu p.1 ×2
unresolved person Suciratin Public Expose p.1
unresolved person H. Thamrin p.1 ×4
unresolved org PT. INTIIBANGUN SEJAHTERA p.3
unresolved person Yuliana Hema p.4
unresolved person Rizki Vauzi p.4
unresolved person Satya Budi p.5

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