Scene 0 / 3 · HERO 07:00 WITA — Senin, 18 Mei 2026 · Ir. Hendra Santoso (President Director) buka laptop sebelum kopi pagi. Satu pane kaca untuk seluruh bisnis — Revenue YTD, EBITDA, Production, Cash. Dua warning naik: concentration risk 72% top-3 buyer, HBA Mei drop -5,2%. Dia drill-down 3 kali dalam 8 menit, sebelum pergi ke rapat manajemen. 07:00 WITA — Monday, 18 May 2026 · Mr. Hendra Santoso (President Director) opens his laptop before his morning coffee. One pane of glass for the entire business — Revenue YTD, EBITDA, Production, Cash. Two warnings surface: 72% top-3-buyer concentration risk and a -5.2% May HBA drop. He drills down three times in eight minutes before the management meeting.
Executive Boardroom · Senin 18/5/2026Executive Boardroom · Monday 18/5/2026
PT Karya Tambang Sejahtera · RKAB B-342/2025 · KaltimPT Karya Tambang Sejahtera · Annual Plan B-342/2025 · East Kalimantan
Ir. Hendra Santoso, MBA
President DirectorPresident Director
HS
Revenue YTDRevenue YTD
USD 42,3M
97% dari RKAB 2025 (USD 43,6 M)97% of Annual Plan (USD 43.6 M) +12% YoY
EBITDA MarginEBITDA Margin
31,2%
Q4 lalu 28,4% · target 30%Q4 last year 28.4% · target 30% +2,8pp
Production YTDProduction YTD
820kt ROM
102% plan · 2,0 Mt target 2026102% of plan · 2.0 Mt full-year target Ahead
Cash PositionCash Position
IDR 48,5B
DSO 42 hari (↓ dari 51)DSO 42 days (down from 51) Improving

Strategic WatchStrategic Watch

4 item memerlukan perhatian eksekutif4 items requiring executive attention
!
Concentration risk: Top-3 buyer = 72% revenueConcentration risk: Top-3 buyers = 72% of revenue
TNB 28% · EVN 24% · PLN 20% · target ≤60% akhir 2026TNB 28% · EVN 24% · PLN 20% · target ≤60% by end-2026
72%
!
HBA Mei turun -5,2% MoM ke USD 83,85/tMay HBA dropped -5.2% MoM to USD 83.85/t
4 shipment Mei impacted · settlement true-up Rabu 20/54 May shipments impacted · settlement true-up on Wed 20/5
-5,2%
i
RKAB 2025 realization 97,3% — on trackAnnual Plan 2025 realisation 97.3% — on track
SR drift +8,3% sudah trigger revisi (M4 Compliance)SR drift +8.3% already triggered a revision (M4 Compliance)
97,3%
i
IUP expiry 1.842 hari (5 tahun)IUP expires in 1,842 days (5 years)
Renewal prep kick-off disarankan Q3 2026Renewal preparation kick-off recommended Q3 2026
1.842d

Compliance Deadlines · 14 HariCompliance Deadlines · 14 days

5 kewajiban regulator aktif5 active regulatory obligations
20/5
MinerbaOne · Laporan AprilMinerbaOne · April report
ESDM
9 bab9 ch. OK
25/5
Royalty PNBP · AprilRoyalty PNBP · April
SIMPONI / Kemenkeu
IDR 1,24B OK
28/5
SIMBARA · Export manifestSIMBARA · Export manifest
Lot TNB Barge VITNB Barge VI lot
75,0kt Prep
31/5
AMDAL · Semi-annualAMDAL · Semi-annual
KLHK
H1 2026 Prep
02/6
BPJS Naker · iuran MeiBPJS Naker · May contribution
650 workforce650 workforce
IDR 287M Auto

Revenue & Production · 12 Bulan TerakhirRevenue & Production · Trailing 12 months

Mei 2026 month-to-dateMay 2026 month-to-date
USD 6M4M2M0
Jun'25
Jul
Aug
Sep
Oct
Nov
Dec
Jan'26
Feb
Mar
Apr
May MTD
Revenue USD MRevenue USD M Production kt ROMProduction kt ROM HBA Index USD/tHBA Index USD/t

Customer ConcentrationCustomer Concentration

Forward book 1,2 MtForward book 1.2 Mt
TNB Malaysia
28%
EVN Vietnam
24%
PLN (DMO)
20%
Adani Global
12%
Lain-lain (3)Others (3)
16%
⚠ Top-3 buyer = 72%. Target board 2026: diversifikasi ≤60% (add 2 buyer Vietnam + 1 India).⚠ Top-3 buyers = 72%. Board target 2026: diversify to ≤60% (add 2 Vietnam + 1 India buyer).

Safety & PeopleSafety & People

Rolling 12 bulanRolling 12 months
45
hari zero fatalitydays zero fatality
LTIFR0,6
CAPA terbukaOpen CAPA11 · 2⚠
Cert expiry 60dCert expiry 60d12
Contractor PamaContractor Pama94/100
PROPERBIRU

Financial Flash · Mei 2026 MTDFinancial Flash · May 2026 MTD

Drill-down: CFO View (Scene 1)Drill-down: CFO View (Scene 1)
Revenue
5,8M
USD · 18 hari18 days
OPEX
3,9M
USD · 67% of revenue
Royalty PNBP
350k
USD · 6% of revenue
EBITDA
1,5M
USD · 26% margin
FCF
1,1M
USD · setelah CAPEXafter CAPEX
AR > 60d: IDR 2,3 B (3 buyer) AP > 30d: IDR 890 M Inventory: IDR 14,0 B CAPEX YTD: IDR 18,0 B (fleet 12 + workshop 6)