G. Michael Sievert is Director at ALASKA AIR GROUP, INC. (ALK). SEC records also connect Sievert to STARBUCKS CORP (SBUX) and T-Mobile US, Inc. (TMUS). Sievert has reported 12 insider filings with the SEC since 2024. The most recent filing was in June 2026.
Every role G. Michael Sievert has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
ALASKA AIR GROUP, INC. (ALK)1 filingUpdated Aug 30, 2026
G. Michael Sievert is Director of ALASKA AIR GROUP, INC. (ALK). 12 SEC Form 4 filings on record going back to 2024, most recently on 3 June 2026. Most recent open-market trade: sold $242K of TMUS on 25 February 2026. Lifetime open-market sales: $71.74M.
Every recent SEC Form 4 transaction G. Michael Sievert has reported, most recent first.
InsiderAlpha's records for G. Michael Sievert go back to 2024: 12 primary Form 4 filings, an average of 4.0 per year. 4 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Insiders who reported open-market trades in the last 12 months at the companies G. Michael Sievert files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
G. Michael Sievert is a corporate insider, tracked as Director of ALASKA AIR GROUP, INC. (ALK). InsiderAlpha holds 12 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
1 primary Form 4 filing in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases and 12 open-market sales ($71.74M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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$TMUS T-Mobile US, Inc.1.1K shares @ $221.85$242K