Profile
| Role | Director |
|---|---|
| Notability | 30/100 |
Updated Jul 16, 2026
SIEVERT G MICHAEL has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $62.04M.
| Role | Director |
|---|---|
| Notability | 30/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-03 | ALK | ALASKA AIR GROUP, INC. | A — Grant or award | 4.3K | $44.52 | $190K |
| 2026-03-27 | SBUX | STARBUCKS CORP | A — Grant or award | 3.7K | $0.00 | |
| 2026-02-25 | TMUS | T-Mobile US, Inc. | S — Open-market sale | 1.1K | $221.85 | $242K |
| 2026-02-25 | TMUS | T-Mobile US, Inc. | S — Open-market sale | 13.9K | $220.07 | $3.06M |
| 2026-02-23 | TMUS | T-Mobile US, Inc. | S — Open-market sale | 80.0K | $214.94 | $17.20M |
| 2025-12-04 | TMUS | T-Mobile US, Inc. | G — Bona-fide gift | 65.5K | $0.00 | |
| 2025-08-18 | TMUS | T-Mobile US, Inc. | S — Open-market sale | 22.5K | $257.17 | $5.79M |
| 2025-08-18 | TMUS | T-Mobile US, Inc. | S — Open-market sale | 22.5K | $255.58 | $5.75M |
| 2025-05-19 | TMUS | T-Mobile US, Inc. | S — Open-market sale | 22.5K | $240.99 | $5.42M |
| 2025-05-19 | TMUS | T-Mobile US, Inc. | S — Open-market sale | 22.5K | $244.40 | $5.50M |
| 2025-04-01 | TMUS | T-Mobile US, Inc. | F — Tax withholding / forfeiture | 50.2K | $268.54 | $13.49M |
| 2025-04-01 | TMUS | T-Mobile US, Inc. | A — Grant or award | 127.6K | $0.00 | |
| 2024-11-18 | TMUS | T-Mobile US, Inc. | S — Open-market sale | 40.0K | $239.22 | $9.57M |
| 2024-11-13 | TMUS | T-Mobile US, Inc. | S — Open-market sale [10b5-1] | 20.0K | $237.82 | $4.76M |
| 2024-11-13 | TMUS | T-Mobile US, Inc. | S — Open-market sale [10b5-1] | 20.0K | $237.73 | $4.75M |
SIEVERT G MICHAEL is a corporate insider — currently tracked as Director of ALASKA AIR GROUP, INC. (ALK). InsiderAlpha tracks every SEC Form 4 filing in real time.
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 10 open-market sales ($62.04M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live SIEVERT G MICHAEL profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.