Chapter 1

Business and Balance Sheet

PT Sarana Menara Nusantara (TOWR) is the largest of Indonesia's listed tower operators by revenue: a holding company whose one real asset is Protelindo, a portfolio of 36,247 towers leased to the country's mobile carriers under long-term, non-cancellable contracts. In FY2025 it earned Rp13.3 trillion of revenue at an 82% EBITDA margin and Rp3.7 trillion of net profit. Once a growth-stock favourite, the shares now trade near multi-year lows around six times earnings, after a 2025 recapitalization that cut leverage and lifted the controlling family's stake.

What the company owns

TOWR is a holding structure, not an operating business in its own right. Its principal asset is a 99.999999998% stake in PT Profesional Telekomunikasi Indonesia — Protelindo — which has run towers commercially since 2003 [1]. Protelindo owns steel and land, and rents vertical space on each tower to wireless operators. The model is a landlord's: at the end of 2025 the group carried 36,247 towers and roughly 185,000 km of fibre-optic network (including associate DATA), and describes the bulk of its business as sitting on non-cancellable long-term contracts that produce "predictable and recurring" cash flows [2].

The economics of that model turn on two numbers: how many towers you own, and how many tenants sit on each one. TOWR ended 2025 with 60,500 tenants across its towers — a tenancy ratio of 1.67 — with 53% of towers located in Java [3]. Because the incremental tenant on an existing tower costs the operator almost nothing to add, that ratio is the primary lever on margins; at 1.67 it sits below peers, which is either unused capacity or a structural limit, depending on where the industry goes.

Within Indonesia, TOWR is one of two clear leaders. By revenue its Rp13.3 trillion dwarfs the Rp6.9 trillion of listed peer Tower Bersama (TBIG) [4]. By tower count it runs second to state-linked Mitratel (MTEL), which reported 40,230 towers at year-end against TOWR's 36,247 [5]. Tower Bersama ended the year with 24,212 towers and 41,892 tenants [6].

Sources: TOWR Q4 FY2025 call [7]; Mitratel Q4 FY2025 [8]; Tower Bersama FY2025 AR [9].

How much it earns

The three-year record is one of steady, unspectacular growth. Revenue rose from Rp11.7 trillion in FY2023 to Rp13.3 trillion in FY2025 — about 6.5% a year — while EBITDA climbed from Rp10.0 trillion to Rp11.0 trillion and net profit from Rp3.3 trillion to Rp3.7 trillion [10]. FY2025 profit of Rp3.68 trillion was up 9.4% on the prior year [11].

Source: FY2025 Annual Report, Financial Highlights [12].

The margin is the striking part. EBITDA margins ran 85.0% / 84.0% / 82.3% across the three years, and net margin held near 27% [13]. The slow drift down in the EBITDA margin is worth flagging — it coincides with expansion into lower-margin fibre and non-tower services — but a business converting more than four-fifths of revenue into EBITDA is, structurally, a high-quality one. The steadiness matters more than the level for a landlord: it is what a book of non-cancellable leases is supposed to deliver.

Source: FY2025 Annual Report, Financial Highlights [14].

Who controls it

TOWR is a controlled company. At the end of 2025, two vehicles associated with the Hartono family — Indonesia's wealthiest, owners of the Djarum group and controlling shareholders of Bank Central Asia — held a combined 65.2% of the 59.1 billion shares outstanding: PT Sapta Adhikari Investama with 45.3% and PT Dwimuria Investama Andalan with 20.0% [15]. The public float is roughly a third; management holds only token stakes.

The interesting move sits between the two years. A year earlier the same family vehicles held 60.0% (Sapta 54.4%, Dwimuria 5.6%) of a smaller 51.0 billion-share base [16]. In 2025 the company issued roughly 8 billion new shares through a rights offering; the family took up almost all of them, raising its combined holding by about five percentage points while the share count grew. That is the opposite of a controlling owner cashing out into strength — it is one adding capital as the stock fell.

Source: Q4 FY2025 Financial Statements, Note 27 Share Capital (Dec-2025 and Dec-2024 columns) [17]. Public and combined figures derived from the same table.

Key management compensation is modest against the earnings base: the Board of Directors drew Rp100.4 billion and the Board of Commissioners Rp25.5 billion in aggregate for FY2024, together under 4% of that year's net profit [18]. A management and employee stock-option programme (MESOP) exists but is small, sourced from about 1.8% of capital in treasury shares [19].

The balance sheet, and the question of survival

A tower business is a leveraged business — the towers are long-lived, the leases are contracted, and operators fund the steel with debt against those cash flows. TOWR is no exception: it carried Rp44.6 trillion of bank loans and bonds at the end of 2025 against Rp27.1 trillion of equity [20]. For an investor whose first fear is bankruptcy, the direction of travel is what counts, and in 2025 it moved the right way.

The 2025 rights issue raised Rp5.5 trillion, and management used it — plus internally generated cash — to pay down more than it borrowed. Net debt to EBITDA fell to 3.74x from 4.6x a year earlier, net debt to equity dropped to 1.6x from 2.6x, and the average cost of borrowing came down to 6.0% from 6.5% as Bank Indonesia cut rates [21]. The group holds investment-grade ratings — BBB- from S&P and an AAA national-scale rating from Fitch — and interest cover of roughly 3.9x [22].

Source: FY2025 Annual Report, Key Ratios [23].

That does not make the leverage trivial — at 3.7x, net debt is still nearly four years of EBITDA, and a landlord this indebted has little tolerance for a sustained fall in occupancy. But the combination of contracted cash flows, investment-grade access to rupiah debt, a rate tailwind, and a controlling owner willing to inject equity places the near-term risk of financial distress low rather than acute. The counter-fact a sceptic should hold onto: the deleveraging leaned on Rp5.5 trillion of fresh equity, not purely on free cash flow, so the improvement is partly a one-time repair rather than proof the business self-funds its own debt reduction.

The stock, and what this report examines

The reason TOWR is worth a professional investor's time is the gap between that operating picture and the share price. The stock changes hands near Rp414, down from an intra-January high of Rp625 in 2026 and far below the levels it commanded when the market treated it as a growth compounder. At Rp414 against FY2025 earnings per share of Rp69, the shares trade at roughly six times earnings [24]; the equity is capitalised at around Rp24 trillion, and the enterprise at roughly six times EBITDA once net debt is added. Analyst consensus, for what it is worth, sits well above the price — a mean target near Rp685, some 65% higher.

Source: company share-price data feed (Yahoo Finance, TOWR.JK); first session shown (23 Jan) and month-end closes through 23 July 2026. Consensus target from analyst estimates feed (S&P Global), July 2026.

Which frames the question this report exists to answer, and that the chapters to follow test from different angles: whether TOWR's fall from a growth-stock premium to roughly six times earnings marks a permanent derating of a tower landlord hemmed in by a consolidating three-carrier market, or the mispricing of a deleveraged, cash-generative, family-controlled asset whose growth has slowed but not stopped. The bull points to margins, contracted cash flows, insider buying and a discounted multiple; the bear points to carrier mergers churning tenants off towers, a tenancy ratio that has not climbed, and leverage that still needs feeding. The evidence for each is what follows.