SBA Communications Corporation (SBAC) | The Buildout — AI Infrastructure
The Verdict
SBA Communications owns and operates wireless communications infrastructure: towers, rooftops and other structures that support antennas for carrier networks. Its role in the AI buildout is as a potential host for distributed compute at macro tower sites, where smaller edge data centers could support AI inference and low-latency applications closer to end users.
| Market Cap | — |
| Revenue (TTM) | $2.9B |
| Revenue Growth | +6.3% |
| EBITDA Margin (TTM) | 61.3% |
| Net Debt | $15.1B |
| Earnings Beats | 2 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Site leasing generated 97.9% of FY2025 total segment operating profit, making the core a high-margin leasing model.
- Owned portfolio of 46,328 sites at December 31, 2025, including 17,394 U.S. sites and 28,934 international sites across 12 markets.
- Q2 2026 company-wide tower cash flow margin was just under 80%, with leverage at 6.4x net debt to adjusted EBITDA.
- Completed inaugural $3.5 billion investment-grade bond issuance in July 2026, S&P upgrade to BBB, and pro forma secured debt below 50% of total debt.
- International new tower builds reached 99 in Q2 2026 with full-year 2026 expectation around 600; management expects risk-adjusted returns to exceed cost of capital often on day one.
What We’re Watching
- U.S. application volumes are steady, not accelerating; Q2 guidance raise excluded adjusted EBITDA and leaned on straight-line revenue, FX, and interest expense.
- International churn is expected to peak in 2026, but Claro churn may still be ahead and timing is unresolved.
- Edge compute has no disclosed revenue and typical deployments are sub-1-megawatt; current tower sites are generally not set up for larger power loads.
- EchoStar/DISH litigation remains binary; all future recurring revenue has been removed from guidance.
The thesis remains intact but not inflecting: the core leasing business is stable and high-margin, the balance sheet strengthened, and management's tone on edge compute improved, while the operational story remains steady rather than accelerating. The key open question is whether edge compute or spectrum-driven carrier activity converts from options into disclosed revenue before churn overhangs clear.
Earnings
The source materials do not include Q2 2026 revenue or gross margin. SBA reported Q2 2026 net income attributable to SBA of $198.8 million, or $1.87 per share, AFFO per share of $3.05, and company-wide tower cash flow margin just under 80%.
| Metric | Q1 FY2026 | Q4 FY2025 | Q1 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $703M | $720M | $664M | +5.9% |
| Gross margin | 75.6% | 30.6% | 75.8% | -20bps |
| EBITDA | $424M | $470M | $400M | +6.0% |
| EPS | $1.74 | $3.47 | $2.04 | −14.7% |
| AFFO per share | $3.05 | n/a | n/a | — |
| Company-wide tower cash flow margin | just under 80% | approximately 80% | n/a | — |
We didn’t really change much … most of the stuff at the top end has changed slightly because of FX … basically, there’s no change in our outlook from what we gave last time, except for a couple of these specific things that occurred.— Brendan Cavanagh, CEO, August 3, 2026
Management tone: Management's tone shifted from more optimistic in Q1 2026 to calmer and more measured in Q2 2026. On the Q2 call, management repeatedly attributed the modest guidance raise to straight-line revenue, FX, and interest expense rather than an operational acceleration, and described core leasing as steady.
Management Guidance
Full-year 2026 guidance as updated in the Q2 press release includes site leasing revenue of $2,649.0 to $2,674.0 million, site development revenue of $190.0 to $210.0 million, total revenues of $2,839.0 to $2,884.0 million, tower cash flow of $2,092.0 to $2,112.0 million, adjusted EBITDA of $1,921.0 to $1,941.0 million, and AFFO per share of $11.93 to $12.38. The outlook assumes 106.4 million diluted shares and FX of 5.05 Brazilian Reais, 2,560 Tanzanian Shillings, and 16.40 South African Rand per U.S. dollar. The Q2 update did not raise adjusted EBITDA guidance per management commentary.
Trajectory
TTM revenue through Q1 FY2026 was $2,854.3 million, up 6.3% year over year, with TTM EBITDA of $1,749.8 million at a 61.3% margin and free cash flow of $1,018.2 million. Q1 FY2026 revenue was $703.4 million, up 5.9% year over year but down 2.3% sequentially, with domestic site leasing revenue of $450.3 million and international site leasing revenue of $205.8 million. The source attributes the domestic decline primarily to Sprint, EchoStar, and other lease non-renewals. Computed signals show revenue decelerating while gross and EBITDA margins expand.
The Model
The model projects FY+1 revenue of $2,878 million and EBITDA of $1,851 million at a 64.3% margin, rising to FY+2 revenue of $3,015 million and EBITDA of $1,942 million at a 64.4% margin. The FY+1 anchor is modest revenue growth above the trailing $2,854 million, with margin expansion carrying into FY+2.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $2.8B | $2.9B | $3.0B |
| YoY Growth | — | +2.2% | +4.8% |
| EBITDA | $1.7B | $1.9B | $1.9B |
| EBITDA Margin | 61.3% | 64.3% | 64.4% |
Projections are the median of 5 independent model runs.
Full-year 2026 guidance as updated in the Q2 press release includes site leasing revenue of $2,649.0 to $2,674.0 million, site development revenue of $190.0 to $210.0 million, total revenues of $2,839.0 to $2,884.0 million, tower cash flow of $2,092.0 to $2,112.0 million, adjusted EBITDA of $1,921.0 to $1,941.0 million, and AFFO per share of $11.93 to $12.38. The outlook assumes 106.4 million diluted shares and FX of 5.05 Brazilian Reais, 2,560 Tanzanian Shillings, and 16.40 South African Rand per U.S. dollar. The Q2 update did not raise adjusted EBITDA guidance per management commentary.
What Could Go Right — and Wrong
- A material edge-compute commercial agreement converts AI optionality into disclosed revenue.
- U.S. new lease and amendment billings break above the recent $9 to $10 million quarterly run-rate.
- International churn normalizes after 2026 and Millicom lease-up plus roughly 600 new builds sustain international revenue growth.
- Strict upper C-band build-out rules force carrier amendments and colocations after the April 2027 auction.
- EchoStar/DISH litigation resolves with cash recovery.
- U.S. carrier cost discipline keeps applications steady and domestic site leasing revenue remains soft.
- Claro or remaining large customers add another international churn wave beyond 2026.
- Edge compute stays sub-1-megawatt and trial-scale with no disclosed revenue.
- Spectrum timing slips, including 2.7 GHz and 4.4 GHz, delaying the demand uplift.
- EchoStar recovery is heavily haircut or absent.
Looking Ahead
The next 12 months depend less on quarterly revenue and more on whether buybacks resume, international builds keep climbing, and edge conversations turn concrete. The dated regulatory milestone is the April 2027 upper C-band auction, with strict build-out requirements that could shape carrier site activity.
- H2 2026Share buyback resumption — Management said it expects to resume buybacks after revolver paydown.
- Q3/Q4 2026New tower build cadence — Sequential build counts versus the roughly 600 full-year expectation.
- November 2026ABS maturity refinancing — Assumed $1.2 billion November ABS maturity refinanced at 5.25%.
- Next 12 monthsEdge compute trials develop — Management expects developments over the next 12 months with no specifics yet.
- April 2027Upper C-band auction — 160 MHz auction starts; strict 45% and 80% coverage build-out rules.
- 2028 or later2.7 GHz spectrum auction — Could be auctioned as early as 2028 after Congress and NOAA/FAA coordination.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $2.7B | $2.8B | $2.9B | +5.1% |
| Gross Margin | 77.3% | 63.8% | 63.6% | 1,358bps |
| EBITDA | $1.7B | $1.7B | $14.3B | +1.2% |
| EBITDA Margin | 63.6% | 61.3% | 61.3% | 234bps |
| Net Income | $749M | $1.1B | $1.0B | +40.6% |
| Free Cash Flow | $1.1B | $1.1B | $9.5B | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)63.6%
- EBITDA Margin (TTM)61.3%
- Net Margin (TTM)35.7%
- ROIC10.4%
- FCF Conversion58.2%
- SBC / Revenue2.8%
The Company
SBA Communications is an independent owner and operator of wireless communications infrastructure. Its core business is site leasing: towers, rooftops and other structures that support antennas used for wireless communications. Site leasing contributed 97.9% of total segment operating profit in FY2025. The portfolio comprises 17,394 sites in the United States and territories and 28,934 sites across 12 international markets, for 46,328 owned sites at December 31, 2025.
SBA operates largely as an owner of long-lived real estate assets, with site leasing revenue carrying high tower cash flow margins. Its smaller U.S.-only site development services business performs network pre-design, site audits, zoning and permitting, construction, antenna and radio installation, commissioning, and maintenance. Domestic sites generated 72.6% of FY2025 site leasing revenue. Customer concentration sits with T-Mobile at 31.1%, AT&T Wireless 20.3%, Verizon Wireless 15.1%, and Telefonica 19.7% in the latest listed year.
Business Segments
Competitive Landscape
SBA's 10-K names American Tower and Crown Castle as large independent tower companies competing in domestic site leasing. Management says U.S. tower M&A asking prices are much higher than its view of its own equity, so it sees buybacks as a better use of capital rather than competing for high-priced tower deals.
- American TowerDisclosed in 10-K as a large independent tower company. Read-through: AMT organic tenant billings growth about 2%, or about 4% ex-DISH, with U.S./Canada about +5% ex-DISH.
- Crown CastleDisclosed in 10-K as a large independent tower company. Not discussed further in source.
Supply Chain
SBA sits between carrier tenants and its owned tower sites. Neighbor read-throughs provide supplier signals, but no direct SBA supplier relationships are verified in the source.
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