Form 4: T-Mobile Director Sells Shares Under 10b5-1 Plan

T-Mobile US Director G. Michael Sievert sold a total of 15,000 shares of common stock in late February 2026 under a Rule 10b5-1 plan.

Summary

• G. Michael Sievert, a Director of T-Mobile US, Inc. (TMUS), reported sales of common stock.
• On February 23, 2026, Sievert sold 13,911 shares at a weighted average price of $220.07 per share, with individual transactions ranging from $220.00 to $220.56.
• On February 24, 2026, Sievert sold an additional 1,089 shares at a weighted average price of $221.85 per share, with individual transactions ranging from $220.83 to $222.95.
• These transactions were conducted pursuant to a contract, instruction, or written plan for the purchase or sale of equity securities, intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
• Following these sales, Sievert beneficially owns 125,695.945 shares of T-Mobile common stock.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event. The sales are routine insider transactions, likely for personal financial planning, and executed under a pre-arranged 10b5-1 plan, which typically reduces negative market interpretation.

Positives

• The sales were executed under a Rule 10b5-1 trading plan, indicating pre-scheduled transactions for personal financial planning rather than a reaction to recent company performance or outlook.

Negatives

• Insider selling, even under a 10b5-1 plan, can sometimes be perceived by the market as a lack of confidence, though this is often mitigated by the pre-planned nature of the transaction.

Industry Context

StockSavvy.ai notes that insider sales, particularly those executed under a Rule 10b5-1 plan, are a common practice for executives and directors for personal financial planning, diversification, and liquidity. Such transactions do not inherently signal a change in company fundamentals or management's long-term outlook for the telecommunications sector.

Stakeholder Impact

• Shareholders may observe a slight increase in available shares on the market, but the impact is generally minimal given the volume and the pre-planned nature of the transaction.

Key Dates

Keywords

T-Mobile, TMUS, G Michael Sievert, Insider Trading, Form 4, Stock Sale, Director, 10b5-1 Plan, Equity Transaction