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Red Flags

Filings a company makes when something has gone wrong, or is about to: a missed reporting deadline (NT 10-K/Q), a delisting from its exchange (Form 25), a deregistration that ends SEC reporting altogether (Form 15), or an insider's notice of intent to sell restricted stock (Form 144). Any one can be routine — Form 144s are filed constantly, and a late filing is sometimes just a late filing — so what is worth reading here is the pattern and the timing.

Delistings · 6 Deregistrations · 1 Insider sale notices · 109
Info Freier Jon filed notice of proposed sale May 21, 2026

4,799 shares · $911,810 · via Fidelity Brokerage Services LLC · Officer

Notable Katz Michael J. filed notice of proposed sale May 01, 2026

5,000 shares · $979,033 · via Fidelity Brokerage Services LLC · Officer

114 more red-flag filings behind a free account

See every red-flag filing T-Mobile US, Inc. has made, with the filing behind each one.

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