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EdgarHawk

SIEVERT G MICHAEL

President and CEO

Director Officer
9 filings analyzed · 1 company · Latest 2026-02-25

Companies

Company Buys Sells Direction
T-Mobile US, Inc. TMUS 0 16 Net selling

Activity

February 2026
2026-02-25 T-Mobile US, Inc. TMUS
low
Sell
15,000 shares
$3,302,988
Significance 4/10

Director Sievert sold 15,000 TMUS shares for $3,302,988.42; holdings drop to 125.7K shares

Director G Michael Sievert executed 2 separate sales totaling 15,000 shares (15.0K shares) for $3,302,988.42 at an average price of $220.20 on February 23–24, 2026, reducing his holdings by 10.7% to 125.7K shares. At the current price of $218.66, the executed trades are underwater by approximately $21.05 per share, though this reflects post-transaction market movement rather than timing of the sale itself. The TMUS-specific track record shows 2 of 4 prior measurable sales were well-timed at the 90-day horizon, indicating a mixed historical pattern at this ticker. The company's fundamentals remain solid with $22.0B quarterly revenue, $2.7B net income, and 8.5% annual revenue growth, though the stock trades at a 19.8% discount to its 52-week high and is up 16.3% over the past 30 days—a recovery context in which a director chose to sell. Without evidence of coordinated activity or material non-public information, the transaction reflects a routine portfolio adjustment by a single director.

2026-02-23 T-Mobile US, Inc. TMUS
medium
Sell
80,000 shares
$17,195,200
Significance 5/10

Director G Michael Sievert sold 80,000 TMUS shares at $214.94 for $17.2M on 2026-02-19, reducing holdings -36.2%.

G Michael Sievert, a director at T-Mobile US, executed a substantial open-market sale of 80,000 shares on 2026-02-19 at $214.94, generating $17,195,200.00 in proceeds and cutting his holdings from 220.7K to 140.7K shares. This represents a -36.2% reduction in position size. At his prior trades at TMUS across 5 historical sales, 2 of 4 measured outcomes showed negative 90-day returns after the sale—consistent with well-timed selling before subsequent declines—though 2 also showed positive 90-day returns. His cross-ticker track record shows an avg 90d return of +4.1% after 20 prior sells with a 21.05% well-timed rate. The current stock price of $219.95 is -19.4% from the 52-week high of $272.83, and has gained +18.2% over the past 30 days since the sale date, suggesting the initial sale price outperformed near-term momentum. With revenue at $22.0B, net income of $2.7B, +8.5% annual growth, and a P/E of 21.03, the company maintains solid fundamentals; the magnitude of this single director sale should be evaluated in context of the broader $242.4B market capitalization and ongoing business performance.

November 2025
2025-11-19 T-Mobile US, Inc. TMUS
high
Sell
45,000 shares
$9,702,450
Significance 6/10

Director Michael Sievert sold 45,000 TMUS shares for $9,702,450 at $215.61 avg; holds 286,195 post-sale

Director G. Michael Sievert executed two separate sales totaling 45,000 shares (45.0K shares) for $9,702,450.00 on 2025-11-17 and 2025-11-18, reducing his holdings by 13.6% to 286,195 shares. The sales occurred at a blended average price of $215.61, well above the current price of $211.27, though notably below the 52-week high of $272.83 where the stock was -22.6%. His prior five trades at TMUS show a 3-of-5 well-timed rate at the 90-day mark, with recent August 2025 sales followed by significant declines (90d returns of -16.1% and -15.5%), suggesting pattern recognition of downturns. The timing here is relevant context: the stock has fallen 8.2% over 30 days and 18.2% over 90 days from recent peaks, and Sievert's execution at $215.61 positioned the sales above current levels, consistent with his demonstrated ability to exit before sustained weakness at this ticker.

August 2025
2025-08-20 T-Mobile US, Inc. TMUS
medium
Sell
45,000 shares
$11,536,875
Significance 5/10

T-Mobile CEO SIEVERT G MICHAEL sold 45,000 shares (45.0K) for $11,536,875.00 in 2 transactions Aug 18-19, retaining 336,221 shares post-sale.

SIEVERT G MICHAEL, President and CEO of T-Mobile US, Inc. (TMUS), executed 2 separate sales totaling 45,000 shares for $11,536,875.00 at an blended average price of $256.38 on August 18-19, 2025. The sale reduced his holdings by 11.8% to 336,221 shares. At his cross-ticker track record level, his 20 prior open-market sells averaged +0.3% over 30 days and +6.7% over 90 days, with a 90-day well-timed rate of 15.00%, suggesting mixed execution timing historically. At TMUS specifically, his 5 prior sales showed 2 of 5 as well-timed at the 90-day mark, indicating variable outcomes at this ticker. TMUS stock was trading at $259.01 at analysis date, 11.3% above its 30-day starting point, placing this sale into a rising 30-day context; however, the stock remains 5.1% below its 52-week high of $272.83.

May 2025
2025-05-21 T-Mobile US, Inc. TMUS
high
Sell
45,000 shares
$10,921,275
Significance 6/10

TMUS CEO Michael Sievert sells 45,000 shares for $10.9M across two days; stock down 9.3% in 90 days post-filing

Michael Sievert, President and CEO of T-Mobile US, Inc., executed 2 separate sales totaling 45,000 shares (45.0K shares) for $10,921,275.00 ($10.9M) on May 19–20, 2025, at an average price of $242.70, reducing his holdings by 10.6% to 381,221 shares (381.2K shares). The sales occurred as TMUS traded near its 52-week high ($272.83), with the stock currently down 5.0% over 30 days and down 9.3% over 90 days from the filing date. Looking at Sievert's prior TMUS-specific transactions, his 5 prior trades at this ticker show a timing pattern of 0 of 3 prior sells that were well-timed at the 90-day mark (returns ranged from -3.0% to +7.6% at 90 days), suggesting his exits at TMUS have not historically preceded downturns; however, the present transaction is recent and the 90-day outcome window remains open. The magnitude of the sale ($10.9M) and the timing relative to near-52-week-high prices merit monitoring as additional quarterly filings and TMUS performance data emerge.

February 2025
2025-02-27 T-Mobile US, Inc. TMUS
medium
Sell
45,000 shares
$12,007,125
Significance 5/10

T-Mobile CEO sold 45,000 shares over 2 days for $12.0M; 11.4% reduction in holdings after 19.5% 30-day climb.

Michael Sievert, President and CEO of T-Mobile US, Inc., executed two separate sales totaling 45,000 shares for $12,007,125.00 on 2025-02-25 and 2025-02-26 at blended average price of $266.82. The sale reduced his holdings from 393,813 shares to 348,813 shares, representing a net reduction of 11.4% of his pre-transaction position. The timing occurs after a sharp 30-day price appreciation of +19.5%, placing the stock at -2.5% from its 52-week high of $270.82, suggesting the CEO acted near recent peaks. His prior five trades at TMUS have shown no pattern of well-timed selling (0 of 5 prior sells were negative at the 90-day mark), and his cross-ticker track record shows a 90-day well-timed rate of only 11.76% with an average 90-day return of +8.1% following sales—both indicators that his historical sell timing has underperformed.

November 2024
2024-11-18 T-Mobile US, Inc. TMUS
medium
Sell
40,000 shares
$9,568,800
Significance 5/10

CEO Sievert sold 40,000 TMUS shares at $239.22 on 2024-11-14 for $9.6M; retains 318,124 shares post-sale.

G. Michael Sievert, President and CEO, sold 40,000 shares at $239.22 for a total value of $9,568,800.00, reducing his holdings by 11.2% from 358,124 to 318,124 shares. The transaction occurred near the 52-week high of $240.88 (at -1.6% discount), and at a price 1.0% above the current market price of $237.03. Examining his same-ticker trade history at TMUS, three prior measurable sales (2024-08-13, 2024-08--12, 2024-05-14) all showed positive 90-day returns (+22.2%, +20.9%, +19.7% respectively), indicating poorly-timed sells where the stock rose after each sale—a 0% well-timed rate on measurable outcomes at this ticker. His broader cross-ticker track record shows a 14.29% well-timed sell rate (1 of 7 sells produced negative 90-day returns), with an average 90-day return of +8.6% across all prior open-market sells. The recent sales on 2024-11-12 and 2024-11-11 are too recent to assess outcome, but the pattern of selling near cyclical highs without subsequent declines at this ticker suggests discretionary portfolio action rather than a negative signal on the company's fundamentals or near-term outlook.

2024-11-13 T-Mobile US, Inc. TMUS
medium
Sell
40,000 shares
$9,511,000
Significance 6/10

TMUS CEO Michael Sievert sells 40,000 shares for $9,511,000 at $237.78–$237.82 as stock touches 52-week high.

Michael Sievert, President and CEO of T-Mobile US, Inc., executed 2 separate sales totaling 40,000 shares for $9,511,000.00 over November 11–12, 2024, at a blended average price of $237.78. The stock is currently at $240.88, matching its 52-week high of $240.88, and has risen 11.6% over 30 days and 23.8% over 90 days. His same-ticker history at TMUS shows 5 prior sells, of which 0 were well-timed at the 90-day mark—his prior August sales netted +3.8% to +2.0% over 30 days and +22.2% to +20.9% over 90 days, indicating the stock continued to rise after each sale. This latest sale at price levels near the 52-week high, following a sustained rally, occurs in a context where the insider's prior TMUS sales have consistently been followed by further stock appreciation rather than declines.

August 2024
2024-08-14 T-Mobile US, Inc. TMUS
medium
Sell
40,000 shares
$7,792,600
Significance 6/10

TMUS CEO SIEVERT sold 40,000 shares for $7.8M (Aug 12-13); stock at 52-wk high; 5 prior TMUS sales all poorly-timed (positive 90d returns).

SIEVERT G MICHAEL, President and CEO, executed 2 separate sales totaling 40,000 shares for $7,792,600.00 at a blended average price of $194.82, reducing his position from 438,124 to 398,124 shares. The transactions occurred as TMUS traded near its 52-week high of $196.49 (current price), with the stock up 8.1% over 30 days and 20.1% over 90 days. Critically, across his 5 prior open-market sales at TMUS, the insider has exhibited a consistent pattern of poorly-timed exits: all 5 prior sales were followed by positive 90-day returns, indicating the stock rose after each sale. His cross-ticker track record shows a 16.67% well-timed rate with an average 90-day return of +6.4% following sells, whereas at TMUS specifically, his timing has been uniformly poor, with 0 of 5 prior sales well-timed. This persistent mismatch—selling before multi-month rallies—suggests either a structural timing challenge specific to TMUS or execution constraints unrelated to fundamental conviction about valuation.

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