Form 4: T-Mobile Director Sells $9.7M in Stock Under 10b5-1 Plan

T-Mobile US Director G. Michael Sievert sold 45,000 shares of common stock for approximately $9.7 million over two days in November 2025, executed under a pre-arranged 10b5-1 trading plan.

Summary

• G. Michael Sievert, a Director of T-Mobile US, Inc. (TMUS), sold a total of 45,000 shares of common stock over two separate transactions.
• On November 17, 2025, 22,500 shares were sold at a weighted average price of $216.97 per share, totaling approximately $4,881,825.
• On November 18, 2025, an additional 22,500 shares were sold at a weighted average price of $214.25 per share, totaling approximately $4,820,625.
• The total value of shares sold across both transactions is approximately $9,702,450.
• Following these transactions, Sievert beneficially owns 286,195.945 shares of T-Mobile common stock.
• These sales were conducted pursuant to a Rule 10b5-1 trading plan adopted by Sievert on November 14, 2024.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While an insider sale can sometimes be viewed negatively, the execution under a pre-arranged 10b5-1 plan mitigates concerns about the timing or motivation behind the sale, suggesting it is part of routine financial planning rather than a reaction to adverse company-specific news.

Positives

• The sales were executed under a Rule 10b5-1 trading plan, indicating pre-scheduled transactions rather than a reaction to immediate company news, which can mitigate concerns about insider trading.

Negatives

• A director selling a significant number of shares (45,000 shares) could be perceived negatively by some investors, potentially signaling a lack of confidence, although the 10b5-1 plan mitigates this interpretation.

Management Comments

• The price reported for the November 17, 2025 transaction is a weighted average sale price, with shares sold in multiple transactions ranging from $215.37 to $218.27. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price within this range upon request.
• The price reported for the November 18, 2025 transaction is a weighted average sale price, with shares sold in multiple transactions ranging from $212.24 to $216.88. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price within this range upon request.

Industry Context

Insider sales, particularly by directors, are common in the telecommunications industry as executives often receive equity as part of their compensation. The use of a Rule 10b5-1 plan is a standard practice to allow insiders to sell shares without concerns about insider trading, as the plan is established when the insider is not in possession of material non-public information.

Stakeholder Impact

• Shareholders may interpret the sale as a neutral event due to the 10b5-1 plan, or potentially a slight negative if they view any insider selling as a lack of confidence, regardless of the plan.

Key Dates

Keywords

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