AD Digital infrastructure · Tower leasing · Spectrum sales · Buyout catalyst · Thesis updated July 19, 2026

Buyout catalyst towers over Array’s core business

The near-term story is TDS’s non-binding bid to buy the minority shares it does not already own.
The standalone company owns 4,452 towers across 19 U.S. states.
Tower demand looks sticky, with only one tenant churn in Q1 2026.
DISH Wireless is a real problem because Array has reserved all DISH revenue due to non-payment.
Spectrum sales are still a key source of cash, including the pending Verizon sale and remaining C-band licenses.

01 Running thesis

The deal now drives the stock

Array is no longer a normal wireless carrier story. After selling its wireless operations to T-Mobile in August 2025, it is mainly a tower landlord with a large pile of spectrum assets to sell over time.

The biggest driver now is the May 2026 proposal from parent company TDS. TDS offered 0.86 TDS shares for each AD share it does not already own, tied to a proposed $10.40 per share special dividend. The proposal is non-binding, so investors cannot treat it as done.

The standalone business has some strengths. Array owns 4,452 towers in 19 U.S. states, and management said Q1 2026 had only one total tenant churn. That matters because tower landlords make better money when carriers stay and add equipment instead of leaving.

The bear case is also clear. T-Mobile is now the most important tenant, DISH Wireless is not paying as expected, and some spectrum sales still need regulatory approval. If the TDS deal falls apart, the stock may quickly trade more on slow tower growth and uncertain spectrum timing.

May 2026→Q1 2026 confirmed the new deal-driven thesis. TDS made a non-binding proposal to buy Array minority shares, while management said tower churn was only one tenant in the quarter.

May 2026▼Array excluded DISH Wireless from colocations and tower tenancy because collection was unlikely. Management also reserved all DISH revenue.

May 2026▲Spectrum monetization kept moving. The first group of T-Mobile 700 MHz licenses received approval and closed on May 5, 2026.

Feb 2026▲Array closed the AT&T spectrum sale for $1.018 billion in proceeds on January 13, 2026. That reduced risk around one major part of the spectrum backlog.

Aug 2025→The post-T-Mobile model became clearer. Array reset around tower leasing, T-Mobile site commitments, interim leases, and retained spectrum with no first C-band build-out deadline until 2029.

02 Business model

Rent the tower, sell the spectrum

Array makes operating revenue mainly by leasing space on owned towers. A carrier pays Array to put antennas and related gear on a tower. More tenants on the same tower can improve economics because the tower is already built.

T-Mobile is central to the model. After the T-Mobile transaction closed, Array had a 15-year master lease with T-Mobile on 2,015 sites, a 15-year extension on 600 existing sites, and interim leases on up to 1,800 sites for up to 30 months. Those interim sites are less certain because T-Mobile can cancel them under the agreement.

Array also owns wireless spectrum licenses. Spectrum is the right to use certain airwaves. Array is selling some licenses to carriers and still holds other spectrum, mainly C-band, that it wants to monetize when terms are attractive.

A third cash source is noncontrolling interests in wireless partnerships, mainly entities managed by Verizon and AT&T. These can generate income and cash distributions, but Array does not control those businesses.

03 Product portfolio

What Array owns

Cash cow

Tower colocation

Array leases space on 4,452 owned towers. The goal is to add more colocations, which means more paying tenants on the same tower base.

Steady

T-Mobile master lease sites

T-Mobile committed to 2,015 sites under a 15-year master lease. This gives Array a large anchor tenant, but it also raises customer concentration.

Option

T-Mobile interim tower sites

T-Mobile has interim leases on up to 1,800 sites for up to 30 months. These leases may create temporary cash flow, but they are not as durable as long-term committed sites.

Option

Retained spectrum

Array holds spectrum licenses it can sell or otherwise monetize. The remaining spectrum not under sale agreements had a book value of $1.5847 billion as of March 31, 2026.

Steady

Equity partnership interests

Array owns noncontrolling interests in wireless operating companies, mainly managed by Verizon and AT&T. These interests can provide earnings and cash distributions.

04 Business segments

Q1 revenue mix

Site rental98%modest

Services2%flat

For the three months ended March 31, 2026, continuing operating revenue was almost all tower site rental. This mix excludes gains on spectrum sales, equity earnings, and discontinued wireless operations.

05 Risk factors

What could break the thesis

TDS deal uncertainty

High impact · Medium odds

TDS’s offer is non-binding, and Array formed a special committee to review it. There is no guarantee the deal will be accepted, completed, or kept on the same terms. If investors price in the deal and it fails, the stock could reset lower.

We watchAny Array or TDS filing that changes the 0.86 exchange ratio, the $10.40 dividend condition, or the special committee recommendation.

T-Mobile concentration

High impact · Medium odds

T-Mobile is now the key tenant after the 2025 transaction. Its 15-year lease commitments help stabilize revenue, but they also make Array more dependent on one carrier. The 1,800 interim sites are weaker because T-Mobile can cancel them under the agreement.

We watchReported colocations, tower tenancy rate, and any update on T-Mobile interim site cancellations.

DISH non-payment

Medium impact · High odds

Array excludes DISH Wireless from colocations and tower tenancy because collection is unlikely. Management also said all DISH revenue has been reserved. That means reported tower metrics already reflect stress from this tenant.

We watchAny DISH payment recovery, lease settlement, write-off, or change in how Array counts DISH in tenancy.

Spectrum sale delays

High impact · Medium odds

Array is counting on spectrum monetization for major cash events. The Verizon AWS, Cellular, and PCS transaction remains subject to regulatory approval and other closing conditions. Some T-Mobile licenses also close in groups, so timing can move.

We watchFCC approvals and closing notices for the Verizon and remaining T-Mobile spectrum transactions.

C-band monetization risk

Medium impact · Medium odds

Array still owns unsold spectrum, mainly C-band. Management has said the first C-band build-out deadline does not apply until 2029, which reduces near-term forced spending risk. Still, waiting too long could hurt value if buyer demand weakens.

We watchUpdates on C-band sale talks, FCC build-out deadlines, and any retained spectrum carrying costs.

06 Quick answers

In one breath

What does Array Digital Infrastructure do now?

Array is mainly a tower leasing company. It owns 4,452 towers and leases space on them to wireless carriers and other tenants.

Why does the TDS proposal matter so much?

TDS already controls Array and has proposed buying the remaining public shares. Because the proposal includes a share exchange and a special dividend condition, the stock may trade more on deal terms than on tower results.

Is Array still a wireless carrier?

No. Array sold its wireless operations and selected spectrum assets to T-Mobile in August 2025. The continuing business is focused on towers, retained spectrum, and partnership interests.

What is the main operating metric to watch?

Watch tower tenancy rate and colocations. Array reported a 0.96 tenancy rate as of March 31, 2026, excluding interim T-Mobile sites and excluding DISH Wireless due to collection risk.