TMUST-Mobile US

Communication · Wireless Telecom · Nasdaq

As America’s supercharged Un-carrier, we have disrupted the telecommunications industry by actively engaging with and listening to our customers and focusing on eliminating their pain points. 10-K, Item 1

Employees: 75,000
Headquarters: Bellevue, WA
Next results: around Feb 10, 2027

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Timeline

1 yr 2 yr 3 yr

Annual report (10-K)Quarterly report (10-Q)Current report (8-K)Auditor changeCEO, CFO, COO or CAO changeRestatementLate filing noticeInsider purchaseCluster buy (3+ insiders)SEC comment letterShare offering (S-3, 424B)

20252026

All 49 events

Oct 28, 20268-K Director or officer change 8-K item 5.02
Oct 28, 20268-K Quarterly results 8-K item 2.02
Oct 28, 202610-Q Quarterly report (10-Q) period ended Sep 30, 2026
Sep 3, 2026Officer CFO change (“T-Mobile” or the “Company”) announced that Peter Osvaldik, Chief Financial Officer of the Company, would retire from his role as Chief Financial Officer in February 2027.
Jul 23, 20268-K Quarterly results 8-K item 2.02
Jul 23, 202610-Q Quarterly report (10-Q) period ended Jun 30, 2026
Jul 7, 20268-K Director or officer change, Regulation FD disclosure 8-K items 5.02, 7.01
Jun 18, 20268-K Shareholder vote results 8-K item 5.07
May 4, 2026Buy Almeida Andre (Chief Broadband, Ent. & Emerg) bought $1.0M open-market purchase on May 1, 2026
Apr 30, 2026Offering Shelf registration: shares and other securities, amount not fixed S-3ASR · Debt Securities T-Mobile US, Inc. (the “Company”), may, from time to time, offer to sell, in one or more offerings, the securities described in this prospectus.
Apr 28, 20268-K Quarterly results 8-K item 2.02
Apr 28, 202610-Q Quarterly report (10-Q) period ended Mar 31, 2026
Apr 23, 20268-K Other events 8-K item 8.01
Mar 31, 20268-K Other events 8-K item 8.01
Mar 27, 20268-K Director or officer change 8-K item 5.02
Feb 19, 20268-K Other events 8-K item 8.01
Feb 11, 20268-K Quarterly results 8-K item 2.02
Feb 11, 20268-K Regulation FD disclosure 8-K item 7.01
Feb 11, 202610-K Annual report (10-K) period ended Dec 31, 2025
Jan 12, 20268-K Other events 8-K item 8.01
Jan 6, 20268-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
Dec 11, 20258-K Other events 8-K item 8.01
Dec 9, 20258-K Director or officer change 8-K item 5.02
Oct 23, 20258-K Quarterly results 8-K item 2.02
Oct 23, 202510-Q Quarterly report (10-Q) period ended Sep 30, 2025
Oct 9, 20258-K Other events 8-K item 8.01
Sep 24, 20258-K Director or officer change 8-K item 5.02
Sep 22, 20258-K Director or officer change, Regulation FD disclosure 8-K items 5.02, 7.01
Sep 4, 20258-K Regulation FD disclosure 8-K item 7.01
Aug 25, 20258-K Director or officer change 8-K item 5.02
Aug 5, 20258-K Other events 8-K item 8.01
Jul 23, 20258-K Quarterly results 8-K item 2.02
Jul 23, 202510-Q Quarterly report (10-Q) period ended Jun 30, 2025
Jul 2, 20258-K Other events 8-K item 8.01
Jun 16, 20258-K Other events 8-K item 8.01
Jun 10, 20258-K Shareholder vote results 8-K item 5.07
Apr 24, 20258-K Quarterly results 8-K item 2.02
Apr 24, 202510-Q Quarterly report (10-Q) period ended Mar 31, 2025
Apr 11, 20258-K Director or officer change 8-K item 5.02
Apr 3, 20258-K Director or officer change 8-K item 5.02
Mar 27, 20258-K Other events 8-K item 8.01
Mar 21, 20258-K Director or officer change 8-K item 5.02
Feb 21, 20258-K Director or officer change 8-K item 5.02
Feb 11, 20258-K Other events 8-K item 8.01
Jan 31, 202510-K Annual report (10-K) period ended Dec 31, 2024
Jan 29, 20258-K Quarterly results 8-K item 2.02
Jan 27, 20258-K Director or officer change, Regulation FD disclosure 8-K items 5.02, 7.01
Dec 13, 20248-K Regulation FD disclosure, Other events 8-K items 7.01, 8.01
Dec 10, 20248-K Regulation FD disclosure 8-K item 7.01

From the SEC filing index. Insider purchases go back 180 days (the Form 4s downloaded).

Every filing TMUS made with the SEC since Feb 27, 2020, newest first, linked to the document on sec.gov. Press releases with quarterly results are attached to the 8-Ks marked "Quarterly results".

All 1009 Annual & quarterly 28 Current reports (8-K) 151 Insiders 608 Proxy & votes 15 Big owners (13D/13G) 52 Shares & debt offered 66 SEC letters 20 Other 69

Filed	Form	What it is	Period
Apr 27, 2026	DEFA14A	Extra proxy material		all files
Apr 27, 2026	DEF 14A	Proxy statement	Jun 16, 2026	all files
Apr 18, 2025	DEFA14A	Extra proxy material		all files
Apr 18, 2025	DEF 14A	Proxy statement	Jun 6, 2025	all files
Apr 26, 2024	DEFA14A	Extra proxy material		all files
Apr 26, 2024	DEF 14A	Proxy statement	Jun 12, 2024	all files
Apr 28, 2023	DEFA14A	Extra proxy material		all files
Apr 28, 2023	DEF 14A	Proxy statement		all files
Apr 27, 2022	DEFA14A	Extra proxy material		all files
Apr 27, 2022	DEF 14A	Proxy statement	Jun 15, 2022	all files
Apr 21, 2021	DEFA14A	Extra proxy material		all files
Apr 21, 2021	DEF 14A	Proxy statement	Jun 3, 2021	all files
May 20, 2020	PX14A6G	Shareholder's proxy letter		all files
Apr 21, 2020	DEFA14A	Extra proxy material		all files
Apr 21, 2020	DEF 14A	Proxy statement	Jun 4, 2020	all files

From SEC's filing index (data.sec.gov submissions).

Work on TMUS in a spreadsheet: Excel workbook (a sheet per section, ten years by column, charts, links to the filings) · CSV. For a Google Sheet that stays up to date, paste =IMPORTDATA("https://tickdelta.com/company/TMUS/export.csv") into a cell.