Tower rents are steady, and share buybacks have returned
- SBAC owns thousands of towers and sites, making it a major landlord for wireless networks.
- Site leasing produced 98.5% of total segment operating profit in Q1 2026, driving the core story.
- A new 10-year Verizon master lease helps support U.S. revenue visibility.
- Management reinstated share repurchases for the second half of 2026 after paying down debt.
- The company cited edge computing for artificial intelligence as a new long-term growth driver.
- Customer churn remains a drag, with 2026 domestic cash site leasing churn guided at $132.0 million to $136.0 million.
A cleaner setup, not a clean one
SBAC is a simple business at its core. It owns tower space that wireless carriers need. The baseline case is that this rent base stays steady while carriers keep adding equipment to handle more mobile data.
The bull case improved in the second half of 2026. Management announced a return to share buybacks, showing confidence in the balance sheet. They also pointed to edge computing for artificial intelligence as a new reason carriers will need more power and fiber at tower sites. The newly added Millicom towers in Central America are also seeing stronger colocation demand than first expected. A colocation means a new tenant adds equipment to an existing tower, which is highly profitable.
The bear case is still real. Sprint, EchoStar, and Oi churn are all hitting the model in 2026. EchoStar is no longer just a possible tenant problem in guidance. SBAC removed the revenue and filed a lawsuit tied to non-payment. Management also warned that higher interest rates are hurting carrier willingness to spend at past levels.
This makes SBAC a transition story. If churn peaks in 2026 and fades in 2027, growth could look cleaner. The return of buybacks helps support the stock, but the company still needs U.S. carriers to increase network spending for growth to truly accelerate.
Renting scarce tower space
SBA Communications is a real estate investment trust, or REIT, focused on wireless infrastructure. A REIT owns income-producing property and must pay out much of its taxable income to shareholders. The property here is mainly macro towers, rooftops, and other sites that hold antennas.
Wireless carriers lease space on these sites under long-term contracts. Leases generally run for an initial term of five years to fifteen years, with renewal options. Many leases also have rent escalators, meaning rent can rise each year by contract or an inflation formula.
The model works best when a tower gets more tenants without much more cost. Once the tower is built, adding another carrier often costs less than building a new site. That is why colocation demand matters so much.
The weak points are also clear. Carrier mergers can remove duplicate network equipment, which creates lost rent or churn. High interest rates can slow carrier capital spending. SBAC also carries the burden of being a capital-heavy business, so debt costs and refinancing matter.
What SBAC sells
Domestic site leasing
This is the U.S. tower rent business. It benefits from long leases and the 10-year Verizon master lease, but 2026 includes Sprint and EchoStar churn.
International site leasing
This includes towers in South America, Central America, and Africa. Millicom assets are helping growth, while Brazil churn tied to Oi remains a 2026 drag.
Colocation leases
Colocation happens when another tenant adds equipment to an existing tower. It is attractive because SBAC can earn more rent from an asset it already owns.
Amendment leases
Amendments let current tenants add or change equipment. They are a normal part of wireless upgrades.
Site development services
This smaller U.S. business helps carriers with design, site work, zoning, construction, and equipment installation. It is more project-based than tower rent.
Profit comes from leasing
The mix is based on Q1 2026 segment operating profit disclosed in the March 31, 2026 Form 10-Q. Domestic and international site leasing together produced 98.5% of total segment operating profit, so services are a small side business.
What could break the story
2026 churn does not fade
High impact · Medium oddsSBAC expects domestic cash site leasing churn of $132.0 million to $136.0 million in 2026, partly from Sprint and EchoStar. It also expects international churn of $36.0 million to $40.0 million, partly from Oi wireline. The bull case needs these headwinds to peak and then ease.
Carrier capex stays weak
High impact · Medium oddsManagement said higher interest rates have hurt carrier ability and willingness to spend at prior levels. If the U.S. carriers slow new work, domestic organic growth may stay muted.
EchoStar recovery disappoints
Medium impact · Medium oddsSBAC removed EchoStar revenue from its 2026 outlook after non-payment and filed a lawsuit. This locked in a tenant loss unless SBAC recovers cash through litigation. The timing and amount remain open questions.
Edge computing delays
Low impact · Medium oddsManagement cited artificial intelligence edge computing as a new growth driver, but it may take years to translate into signed leases and measurable revenue.
International volatility offsets Millicom gains
Medium impact · Medium oddsThe Millicom tower purchase is helping Central America, and early colocation demand is ahead of expectations. But international markets also bring currency, political, regulatory, and consolidation risks. Brazil is still a key churn watchpoint.
In one breath
How does SBA Communications make money?
SBAC leases space on towers and other wireless sites to carriers. The carrier pays rent to place antennas and equipment on the site, often under long-term contracts with annual rent increases.
Why is churn such a big issue for SBAC in 2026?
Churn means a tenant cancels, does not renew, or reduces rent. In 2026, SBAC is dealing with Sprint consolidation, EchoStar non-payment, and Oi-related international churn.
Did SBAC stop buying back stock?
They paused buybacks in early 2026 to focus on paying down debt. However, management announced they would resume share repurchases in the second half of 2026 after improving their balance sheet.
Is SBAC mainly a U.S. company?
The U.S. is the largest profit source. Still, SBAC also owns and operates towers in South America, Central America, and Africa, with Brazil and Guatemala called out as large tower-count markets.
