SBA Communications Corporation (SBAC) | The Buildout — AI Infrastructure
The Verdict
SBA Communications owns wireless towers and the ground beneath them, and rents vertical space on those structures to wireless carriers under long-term contracts. That makes it a landlord, not a technology supplier. Its AI link is narrow and early: offering tower compounds — space, power, backhaul and zoning protection — as distributed locations for edge compute and low-latency AI inference. Management is not selling compute, and no edge revenue is broken out.
| Market Cap | — |
| Revenue (TTM) | $2.9B |
| Revenue Growth | +5.4% |
| EBITDA Margin (TTM) | 64.8% |
| Net Debt | $14.9B |
| Earnings Beats | 2 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Tower cash flow margins ran just under 80% company-wide in Q2 2026; the Q1 2026 domestic margin was 83.9%.
- The investment-grade transition is complete: $3.5B of notes issued in July 2026 at a 5.11% blended cash coupon, a new $2.5B unsecured revolver, and an S&P upgrade to BBB from BBB- in June 2026.
- The dividend is $1.25 a quarter, up about 13% year over year, and equals roughly 41% of the midpoint of the full-year AFFO outlook.
- New tower builds are accelerating — 99 in Q2 2026, up from 75 in Q1 — toward about 600 for the year, mostly in Central America and Tanzania.
- The spectrum calendar is now a fact: the FCC adopted the upper C-band plan on July 22, 2026, with 160 MHz auctioning from April 2027 and automatic license termination for missing the second build-out benchmark.
What We’re Watching
- US carrier spending: management flagged a renewed focus on cost control at larger customers, and US new lease and amendment billings slipped to about $9M in Q2 2026 from about $10M in Q1.
- EchoStar litigation: EchoStar asserts the bankruptcy code lets it haircut claims by 85%; management says it vehemently disagrees and expects recovery to cover many — not all — obligations. No dollar figure is disclosed.
- Refinancing: the $1.165B November 2026 ABS tranche carries a 1.631% coupon and is assumed refinanced at 5.25%, roughly $42M of additional annual interest on that tranche alone, by the source's arithmetic.
- Buyback resumption: management says it intends to resume share repurchases in the second half of 2026; no dollar amount or pace was specified.
The thesis is intact but not yet strengthening. The balance-sheet transformation is delivered and the churn drag is bounded. But the core US leasing line has not inflected, and every growth vector — edge compute, spectrum-driven amendments, direct-to-device — is dated years out on management's own words. The open question is whether the churn roll-off and the next amendment cycle arrive before the refinancing step-up absorbs the AFFO growth.
Earnings
SBA reported Q2 2026 revenue of $715.3M, up from $699.0M a year earlier, on a 75.4% gross margin. AFFO per share was $3.05, and net income attributable to SBA was $198.8M. Company-wide tower cash flow margin came in just under 80%.
| Metric | Q2 FY2026 | Q1 FY2026 | Q2 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $715M | $703M | $699M | +2.3% |
| Gross margin | 75.4% | 75.6% | 74.5% | +90bps |
| EBITDA | $515M | $424M | $405M | +27.2% |
| EPS | $1.87 | $1.74 | $2.09 | −10.6% |
| US new lease & amendment billings | ~$9M | ~$10M | n/a | — |
| New towers built | 99 | 75 | n/a | — |
we intend to resume share buybacks in the second half of this year— Brendan Cavanagh, President and Chief Executive Officer, August 3, 2026
Management tone: Management's tone shifted in several places. On capital allocation, buybacks moved from being described as an important part of the 2026 plan, with no meaningful first-quarter repurchases, to an intent to resume repurchases in the second half. On international churn, the prior quarter's peak-year framing softened to nearing the end, and management declined to commit on next year. On edge compute, management moved from declining to give timing to saying it feels more confident than at any point in the past. The company also flagged a renewed focus on cost control at US carriers, and itself described the guidance raise as mostly foreign exchange and interest.
Management Guidance
FY2026 guidance as last numerically disclosed (Q1 2026 update): site leasing revenue $2,649.0–$2,674.0M, site development revenue $190.0–$210.0M, total revenues $2,839.0–$2,884.0M, Tower Cash Flow $2,092.0–$2,112.0M, Adjusted EBITDA $1,921.0–$1,941.0M, net cash interest expense $492.0–$500.0M, AFFO $1,269.0–$1,317.0M and AFFO per share $11.93–$12.38. The FX assumptions were 5.05 Brazilian Reais, 2,560 Tanzanian Shillings and 16.40 South African Rand to the dollar for the last three quarters of 2026, on an assumed 106.4M diluted shares. In August 2026 management modestly raised site leasing revenue, AFFO and AFFO per share again, with stated drivers of higher straight-line revenue and improved net cash interest expense, and pointed to about 600 new tower builds and a $1.2B November ABS refinance assumed at 5.25%. No numeric ranges were published with the August update, and no 2027 leasing outlook was given.
Trajectory
Revenue has flattened: $699.0M in Q2 2025, $732.3M in Q3 2025, $719.6M in Q4 2025, $703.4M in Q1 2026 and $715.3M in Q2 2026. The composition is doing the work. In Q1 2026 domestic site leasing revenue fell 2.3% year over year — the 10-Q attributed the decline to Sprint, EchoStar and other lease non-renewals — while international site leasing revenue grew 32.6% reported, or 24.8% excluding FX. Because international carries lower margins, the blended tower cash flow margin drifted from 80.9% to 79.8% even though the international margin expanded. AFFO per share fell 4.7% year over year in Q1 2026 while Adjusted EBITDA rose roughly 4.5%, as interest expense and FX remeasurement consumed the operating growth.
The Model
The model projects FY+1 revenue of $2,864M and EBITDA of $1,856M, a 64.8% margin. For FY+2 it projects revenue of $2,965M and EBITDA of $1,915M, a 64.6% margin. That is roughly a $100M revenue step across the two years on an essentially flat EBITDA margin.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $2.8B | $2.9B | $3.0B |
| YoY Growth | — | +1.7% | +3.5% |
| EBITDA | $1.7B | $1.9B | $1.9B |
| EBITDA Margin | 61.3% | 64.8% | 64.6% |
Projections are the median of 5 independent model runs.
FY2026 guidance as last numerically disclosed (Q1 2026 update): site leasing revenue $2,649.0–$2,674.0M, site development revenue $190.0–$210.0M, total revenues $2,839.0–$2,884.0M, Tower Cash Flow $2,092.0–$2,112.0M, Adjusted EBITDA $1,921.0–$1,941.0M, net cash interest expense $492.0–$500.0M, AFFO $1,269.0–$1,317.0M and AFFO per share $11.93–$12.38. The FX assumptions were 5.05 Brazilian Reais, 2,560 Tanzanian Shillings and 16.40 South African Rand to the dollar for the last three quarters of 2026, on an assumed 106.4M diluted shares. In August 2026 management modestly raised site leasing revenue, AFFO and AFFO per share again, with stated drivers of higher straight-line revenue and improved net cash interest expense, and pointed to about 600 new tower builds and a $1.2B November ABS refinance assumed at 5.25%. No numeric ranges were published with the August update, and no 2027 leasing outlook was given.
What Could Go Right — and Wrong
- The churn trough arrives. Sprint and EchoStar churn are named and finite at $(56)–$(55)M and $(56)M for 2026, and management says international churn is nearing the end.
- The amendment cycle starts. AT&T's 600 MHz and T-Mobile's lower C-band are the nearer-term drivers, followed by the upper C-band auction in April 2027 with build-out rules that include automatic license termination.
- Edge compute converts. Roughly half the US portfolio is described as well suited, and management put a 12-month development clock on the conversations.
- International builds keep compounding at improving margins. About 600 builds are targeted for 2026, mostly Central America and Tanzania, with management saying risk-adjusted returns exceed its cost of capital often on day one.
- Financing costs land at or below assumptions. The investment-grade platform opens deeper markets, and the November 2026 ABS refinance is assumed at 5.25%.
- US carrier spending stays paused. Management flagged a renewed focus on cost control at larger customers.
- The refinancing step-up consumes AFFO growth. Near-dated maturities of $5.63B at roughly a 3.4% weighted coupon refinanced near current levels imply on the order of $100M a year of incremental cash interest, by the source's arithmetic.
- EchoStar resolves worse than the company expects. EchoStar asserts an 85% haircut, and the recovery is unquantified.
- International churn extends another year. Brazil is the largest swing factor, at $88.9M of Q1 2026 site leasing revenue.
- The growth vectors stay pre-revenue. Edge compute and the spectrum cycle are both dated years out by management.
Looking Ahead
The next twelve months are mostly a waiting period. Management's own tempering is explicit: most of what it discussed — spectrum, edge compute, direct-to-device — is longer term in its nature, over the next five-plus years, and is not expected to have a significant impact next year. What can move in the window is narrower: buyback resumption in the second half, the roughly 600-site build plan, the November ABS refinance, and whether edge conversations convert beyond trials.
- September 2026Investor conference appearances — CEO and CFO at Goldman, Citi, BofA and RBC events; second-half updates.
- End of Q3 2026Pending site purchases close — 56 sites under contract for $36.9M cash, expected to close.
- 2H26Buyback resumption — Management intends to resume repurchases; no quantum or pace given.
- November 2026$1.2B ABS refinance — Assumed refinanced at 5.25%; tests financing cost assumptions.
- FY2026About 600 tower builds — Mostly Central America, some Tanzania; rising each quarter.
- April 2027Upper C-band auction — 160 MHz offered; automatic termination for missed build-out.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $2.7B | $2.8B | $2.9B | +5.1% |
| Gross Margin | 77.3% | 63.8% | 63.9% | 1,358bps |
| EBITDA | $1.7B | $1.7B | $1.9B | +1.2% |
| EBITDA Margin | 63.6% | 61.3% | 64.8% | 234bps |
| Net Income | $749M | $1.1B | $991M | +40.6% |
| Free Cash Flow | $1.1B | $1.1B | $1.1B | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)63.9%
- EBITDA Margin (TTM)64.8%
- Net Margin (TTM)34.5%
- ROIC11.2%
- FCF Conversion56.5%
- SBC / Revenue2.9%
The Company
SBA Communications owns and operates wireless communications infrastructure — tower structures, rooftops and other structures that support antennas. It rents vertical space on those structures to wireless carriers under long-term contracts with built-in escalators. Site leasing produced 97.9% of FY2025 segment operating profit; site development, a US-only services line, produced the rest. That makes the company a landlord with carrier-grade counterparties, not a technology supplier.
The portfolio held 46,328 sites at December 31, 2025: 17,394 in the US and territories and 28,934 across 12 international markets in South America, Central America and Africa. The site counts understate the US — US sites generate 72.6% of FY2025 site leasing revenue, because US carriers pay far more rent per site. The company owns its Boca Raton, Florida headquarters, about 160,000 square feet, and runs an in-house ground-lease buyout function that has operated for 15 to 20 years.
Business Segments
Competitive Landscape
SBA's own 10-K frames competition as large independent tower companies including American Tower Corporation and Crown Castle International; a competitor filing quoted in the source adds Vertical Bridge, Telesites and Cellnex. On US new builds, management says competitors have been willing to accept returns SBA would not, keeping US build returns hard to justify. The company describes its tower compounds as benefiting from existing power, backhaul and zoning protection, while the Q1 2026 domestic revenue decline shows the corollary: when a carrier consolidates or exits, the revenue leaves.
- American Tower CorporationNamed in the 10-K as a large independent tower company, and AMT's own filing names SBAC as a competitor. AMT's CoreSite unit reported record leasing with 9 of the top 10 AI companies and 3 of the top 5 Neo clouds deployed in its facilities.
- Crown Castle InternationalNamed in the 10-K as a large independent tower company.
- Vertical BridgeNamed in a competitor filing quoted in the source; not discussed by SBA.
- Telesites S.A.B. de C.V.Named in a competitor filing quoted in the source; not discussed by SBA.
- Cellnex Telecom, S.A.Named in a competitor filing quoted in the source; not discussed by SBA.
Supply Chain
SBA sits between tower-structure and ground-lease suppliers on one side and three or four large US carriers plus international operators on the other. No company in the source's neighbour set mentions SBA by name, so the read-through is triangulation rather than confirmation.
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