ISA stock holds support as revenue and EBITDA trends frame 2026

ISA (ISIN COC090000057) is best read through its latest operating numbers: the company reported COP 4.04 trillion in revenue in the first quarter of 2026, EBITDA of COP 3.08 trillion, and EBITDA margin of 76.2%, according to its investor relations materials at ISA investor relations. Those figures matter because they frame the stock around cash generation, regulated returns and capital discipline rather than short-term sentiment.

Revenue at COP 4.04 trillion

The first quarter of 2026 revenue of COP 4.04 trillion gives investors a concrete starting point for the year, while EBITDA of COP 3.08 trillion shows how much of that top line still converts into operating profit. The 76.2% EBITDA margin indicates a high-margin utility-style profile that can support valuation stability when growth slows.

EBITDA margin at 76.2%

A second number stands out: net debt was COP 24.4 trillion at 31 March 2026, versus COP 22.0 trillion a year earlier, which is an increase of COP 2.4 trillion. That comparison matters because higher leverage can weigh on flexibility even when earnings remain resilient.

ISA also reported that its investments reached COP 1.12 trillion in the first quarter of 2026, which helps explain why debt and EBITDA need to be read together. For a regulated infrastructure operator, the balance between investment and funding costs is often more important than a single quarter of headline revenue.

Debt rose to COP 24.4 trillion

The company said its revenue mix remains tied to transmission and infrastructure expansion, so the investment figure is not just a cost item but also a signal of future asset growth. That makes the first quarter of 2026 useful for investors looking at the company through a medium-term lens rather than a single trading session.

Transmission still drives ISA

ISA's business is built around energy transmission and related infrastructure, and that is exactly why the quarter's investment figure is material. COP 1.12 trillion of investment in the first quarter of 2026 suggests the company is still expanding the asset base that underpins future regulated income.

The same structure also helps explain why the market tends to focus on leverage and margin together: COP 24.4 trillion of net debt is not a trivial figure, but it sits alongside COP 3.08 trillion of EBITDA in the quarter. That ratio gives a more practical read on financial resilience than revenue alone.

Closing level matters

For the stock itself, the most useful market reference in this call is the latest dated operating backdrop rather than a live quote. The first quarter of 2026 numbers keep ISA in a zone where margin, debt and investment cadence remain the key variables for share performance.