TMUS Stock: Insider Activity, Filings & Research
T-Mobile US, Inc. (TMUS) — Drillr’s hub for TMUS insider activity, SEC filings, earnings signals and AI research. Over the trailing 3 months, TMUS insiders filed 1 open-market buy and 3 sales (SEC Form 4). 1 published research article, SEC filings and AI analysis on Drillr.
TMUS insider trading activity (SEC Form 4)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 26, 2026 | Freier Jonofficer: Chief Operating Officer | Sell | 4,799 | $190.00 |
| May 4, 2026 | Katz Michael J.officer: Chief Bus. and Prod. Officer | Sell | 5,000 | $195.81 |
| May 4, 2026 | Almeida Andreofficer: Chief Broadband, Ent. & Emerg | Buy | 5,097 | $196.18 |
| May 4, 2026 | Drobac Daniel Jamesofficer: VP & Chief Accounting Officer | Tax | 37 | $196.06 |
| Mar 13, 2026 | Nelson Mark Wolfeofficer: Chief Legal Officer & GC | Grant | 86 | $211.58 |
| Mar 12, 2026 | Datar Srikant M.director | Sell | 1,000 | $218.25 |
| Mar 6, 2026 | Datar Srikant M.director | Sell | 3,291 | $221.10 |
| Feb 26, 2026 | Drobac Daniel Jamesofficer: VP & Chief Accounting Officer | Tax | 389 | $218.66 |
| Feb 25, 2026 | SIEVERT G MICHAELdirector | Sell | 1,089 | $221.85 |
| Feb 25, 2026 | Nelson Mark Wolfeofficer: Chief Legal Officer & GC | Sell | 2,329 | $222.38 |
| Feb 25, 2026 | SIEVERT G MICHAELdirector | Sell | 13,911 | $220.07 |
| Feb 23, 2026 | SIEVERT G MICHAELdirector | Sell | 80,000 | $214.94 |
| Feb 19, 2026 | Osvaldik Peterofficer: Chief Financial Officer | Sell | 27,000 | $214.86 |
| Feb 18, 2026 | Gopalan Srinidirector, officer: President and CEO | Grant | 60,031 | — |
| Feb 18, 2026 | Osvaldik Peterofficer: Chief Financial Officer | Grant | 12,287 | — |
Source: TMUS SEC Form 4 filings, latest May 26, 2026. For informational purposes only — not investment advice.
T-Mobile US, Inc. company profile
Overview
T-Mobile US, Inc. (NASDAQ:TMUS) is one of the largest wireless telecommunications carriers in the United States, serving over 108 million customers across postpaid, prepaid, and wholesale markets. Founded in 1994 and headquartered in Bellevue, Washington, the company went public in 2007. T-Mobile has transformed from a smaller challenger brand into a major industry player, particularly following its 2020 merger with Sprint, which created the third-largest wireless carrier in the U.S. The company operates under the T-Mobile and Metro by T-Mobile brands, providing voice, messaging, and data services throughout the United States, Puerto Rico, and the U.S. Virgin Islands.
Business
T-Mobile operates in the wireless telecommunications industry, which provides mobile communication services through cellular networks. The company's core business revolves around operating a nationwide wireless network infrastructure that enables customers to make phone calls, send text messages, and access high-speed internet data on their mobile devices. The company's primary service offering is wireless connectivity delivered through its extensive 5G and 4G LTE network infrastructure. This network consists of approximately 102,000 macro cell sites and 41,000 small cell/distributed antenna system sites that transmit radio signals to mobile devices. T-Mobile has positioned itself as a leader in 5G technology, which represents the fifth generation of wireless network technology offering significantly faster data speeds, lower latency, and greater capacity than previous generations. T-Mobile's business segments include: 1. Postpaid services (approximately 60-65% of revenue): Monthly subscription plans for consumers and businesses who pay after using services, typically offering higher-value customers with better credit profiles and lower churn rates. 2. Prepaid services (approximately 15-20% of revenue): Pay-in-advance plans marketed under the Metro by T-Mobile brand, targeting cost-conscious consumers and those with limited credit history. 3. Fixed wireless broadband (growing segment, approximately 5-10% of revenue): Home internet service delivered through 5G and 4G networks, competing with traditional cable and fiber providers by leveraging excess network capacity. 4. Business and enterprise services (approximately 10-15% of revenue): Specialized wireless solutions for corporations, government agencies, and small-to-medium businesses, including IoT connectivity and network slicing capabilities. The company also generates revenue from device sales, including smartphones, tablets, and accessories, though this represents a smaller margin business primarily used to acquire and retain customers.
Revenue model
T-Mobile generates revenue through multiple complementary business models centered around wireless network access and related services. The primary revenue stream comes from monthly service subscriptions, where customers pay recurring fees for access to voice, text, and data services. Postpaid customers typically pay $50-100+ per month per line depending on their plan, while prepaid customers pay $15-60 per month. The company has demonstrated consistent ability to grow average revenue per account (ARPA) through plan upgrades and additional services. Device sales represent another significant revenue source, though with lower margins. T-Mobile sells smartphones, tablets, and accessories both through financing plans and outright purchases. While device sales help acquire customers, the company focuses on the higher-margin service revenue for profitability. The company's fixed wireless broadband service charges $50-70 per month for home internet, leveraging excess capacity on existing cellular towers to compete with traditional internet service providers. This represents a high-margin expansion opportunity as it monetizes existing infrastructure investments. Several factors influence T-Mobile's profitability margins. Network efficiency improvements through 5G deployment and spectrum optimization reduce per-bit costs while enabling premium pricing for higher-speed services. Customer mix shifts toward postpaid and business customers improve average revenue and reduce churn. Scale economics from the Sprint merger have created cost synergies in network operations and customer acquisition. Margin pressures come from intense industry competition that can force promotional pricing, rising content and regulatory costs, spectrum acquisition expenses for maintaining network leadership, and device subsidies used to attract customers. Economic downturns can increase customer churn and shift demand toward lower-priced prepaid services, while technology transitions require significant capital investments before generating returns.
Competitive moat
T-Mobile's competitive moat primarily stems from its network infrastructure advantages and spectrum assets, though the strength of this moat is moderate given the oligopolistic nature of the telecommunications industry. The company's strongest defensive position comes from its 5G network leadership, where it has achieved superior coverage, speed, and capacity compared to competitors Verizon and AT&T. T-Mobile's mid-band spectrum portfolio, acquired largely through the Sprint merger, provides an optimal balance of coverage and capacity that is difficult for competitors to replicate quickly. The company's network consistently wins third-party performance tests and provides measurable customer experience advantages. Spectrum scarcity creates natural barriers to entry, as wireless spectrum is a finite government-regulated resource acquired through expensive auctions. T-Mobile's spectrum position, particularly in mid-band frequencies ideal for 5G, provides a sustainable advantage that competitors cannot easily overcome without significant capital investment and regulatory approval. The company benefits from switching costs as customers face inconvenience changing carriers, particularly business customers with complex service arrangements. Scale economies in network operations and customer acquisition create cost advantages over smaller competitors. However, T-Mobile's moat faces several limitations. The wireless industry is essentially a three-player oligopoly with Verizon and AT&T possessing comparable resources and customer bases. Technology disruption from satellite internet providers like Starlink (with whom T-Mobile has partnered) or future 6G standards could reshape competitive dynamics. Regulatory intervention in pricing or network access could reduce profitability. The company's network advantage, while currently strong, requires continuous capital investment to maintain and could erode if competitors successfully deploy competing technologies or acquire superior spectrum positions.
Risks & safety
T-Mobile demonstrates a moderate margin of safety with strong operational cash flow generation but elevated debt levels from the Sprint merger. **Liquidity and Solvency:** - Cash and short-term investments: $12.0 billion (Q1 2025) - Strong operating cash flow: $6.8 billion quarterly, $22.3 billion annually - Current ratio: 1.16, indicating adequate short-term liquidity - Debt-to-equity ratio: 1.98, reflecting significant leverage from merger financing - No immediate solvency concerns given strong cash generation **Valuation Metrics:** - P/E ratio: 25.8x (elevated but reasonable for growth profile) - EV/EBITDA: 13.1x (moderate premium to industry) - Price-to-book: 5.0x (high, reflecting intangible network assets) - Free cash flow yield: approximately 6% (reasonable for infrastructure business) **Other Considerations:** - Regulated industry provides revenue stability but limits pricing flexibility - High capital requirements for network maintenance and 5G deployment - Customer acquisition costs and device subsidies create earnings volatility - Strong competitive position but faces well-funded oligopolistic rivals
Recent development
Over the past few years, T-Mobile has executed several strategic initiatives focused on leveraging its network leadership position and expanding beyond traditional wireless services. The company has aggressively expanded its 5G network deployment, achieving nationwide coverage and superior performance metrics compared to competitors. T-Mobile became the first carrier to deploy 5G Advanced technology and has focused on network slicing capabilities that allow customized service levels for different applications, particularly targeting business and enterprise customers. Fixed wireless broadband expansion represents a major growth initiative, with T-Mobile reaching 6 million customers and targeting 12 million by 2028. The company leverages excess capacity on existing cellular infrastructure to provide home internet service, competing directly with cable and fiber providers in underserved markets. Strategic acquisitions have diversified T-Mobile's service portfolio. The company acquired Mint Mobile and Ultra Mobile to strengthen its prepaid offerings, and more recently announced partnerships with Lumos and MetroNet to enter the fiber internet market. These moves represent T-Mobile's evolution toward becoming a broader connectivity provider rather than purely a wireless carrier. Business and enterprise segment expansion has accelerated, with T-Mobile achieving record business customer additions and developing specialized solutions for government, healthcare, and enterprise clients. The company has introduced T-Priority service for first responders and expanded IoT connectivity offerings. Innovation initiatives include partnerships with Starlink for satellite connectivity, development of AI-powered network optimization and customer service tools, and the launch of the T-Life digital platform to enhance customer engagement and reduce service costs.
TMUS company profile · for informational purposes only — not investment advice.
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