Company Analysis

Telephone and Data Systems Inc. (TDS)

NYSE: TDS · Telephone Communications (No Radiotelephone) · Chicago, IL · filing with the SEC since 1997
Grade4.3
◀ Past 3.6● Present 4.2▶ Future 4.8

Filings

324 filings since 2017 beside 494 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026
Due nextLarge accelerated filer
10-K Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends. by Mar 1, 2027
10-Q Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end. by May 10, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 37 days after the quarter ended. The proxy statement was last filed Apr 8, 2026.

Filings a yearinsider forms included
89679566776810873
20192020202120222023202420252026

2026 counts to Nov 13, 2026.

Officer or director change (8-K item 5.02): 13 times in the last 36 months, the newest Mar 24, 2026.
Insider forms 494

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 6, 2026 10-Q Quarterly report Sep 30, 2026
Nov 6, 2026 8-K items 2.02, 9.01 Results released · Current report
Sep 2, 2026 SCHEDULE 13D/A Activist holder update, amended
Sep 2, 2026 8-K items 8.01, 9.01 Other event · Current report Sep 1, 2026
Sep 2, 2026 SCHEDULE 13D/A Activist holder update, amended
Aug 11, 2026 SCHEDULE 13G/A Large holder update, amended
Aug 7, 2026 10-Q Quarterly report Jun 30, 2026
Aug 7, 2026 8-K items 2.02, 9.01 Results released · Current report
Jun 2, 2026 11-K Employee plan annual report Dec 31, 2025
Jun 1, 2026 8-K items 2.01, 8.01 Purchase or sale of a business completed; Other event · Current report
May 26, 2026 8-K item 5.07 Shareholder vote · Current report May 21, 2026
May 8, 2026 10-Q Quarterly report Mar 31, 2026
May 8, 2026 8-K items 2.02, 9.01 Results released · Current report
May 8, 2026 SCHEDULE 13D/A Activist holder update, amended
May 8, 2026 425 Merger communication
May 8, 2026 8-K items 8.01, 9.01 Other event · Current report May 7, 2026
May 8, 2026 SCHEDULE 13D/A Activist holder update, amended
Apr 29, 2026 SCHEDULE 13G Large holder notice
Apr 27, 2026 SCHEDULE 13G/A Large holder update, amended
Apr 8, 2026 ARS Annual report to shareholders Dec 31, 2025
Apr 8, 2026 DEFA14A Extra proxy material
Apr 8, 2026 DEF 14A Proxy statement May 21, 2026
Mar 27, 2026 SCHEDULE 13G/A Large holder update, amended
Mar 24, 2026 8-K items 5.02, 9.01 Officer or director change · Current report Mar 18, 2026
Mar 13, 2026 PRE 14A Preliminary proxy statement May 21, 2026
Mar 13, 2026 8-K item 5.02 Officer or director change · Current report Mar 10, 2026
Feb 24, 2026 10-K Annual report Dec 31, 2025
Feb 20, 2026 8-K items 2.02, 9.01 Results released · Current report
Jan 30, 2026 SCHEDULE 13G/A Large holder update, amended
Jan 13, 2026 8-K items 2.01, 8.01 Purchase or sale of a business completed; Other event · Current report
Dec 12, 2025 8-K items 1.01, 9.01 Major agreement signed · Current report Dec 8, 2025
Nov 13, 2025 DEFA14A Extra proxy material
Nov 7, 2025 10-Q Quarterly report Sep 30, 2025
Nov 7, 2025 8-K items 2.02, 9.01 Results released · Current report
Oct 15, 2025 SCHEDULE 13G/A Large holder update, amended
Aug 22, 2025 8-K item 1.02 Major agreement ended · Current report Aug 19, 2025
Aug 18, 2025 SCHEDULE 13G/A Large holder update, amended
Aug 11, 2025 10-Q Quarterly report Jun 30, 2025
Aug 11, 2025 8-K items 2.02, 9.01 Results released · Current report
Aug 6, 2025 SCHEDULE 13G Large holder notice
40 of 324 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton TDS · research, not advice