# EDGAR Filing Document

**Accession Number:** 0001051512
**File Stem:** 0001051512-26-000025
**Filing Date:** 2026-4
**Character Count:** 3285
**Document Hash:** 1e54d6fc506424f66bfbea4d88c0f343
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001051512-26-000025.hdr.sgml**: 20260408

**ACCESSION NUMBER**: 0001051512-26-000025

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 8

**FILED AS OF DATE**: 20260408

**DATE AS OF CHANGE**: 20260408

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TELEPHONE & DATA SYSTEMS INC /DE/
- **CENTRAL INDEX KEY:** 0001051512
- **STANDARD INDUSTRIAL CLASSIFICATION:** TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 362669023
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14157
- **FILM NUMBER:** 26846667

**BUSINESS ADDRESS:**
- **STREET 1:** 30 NORTH LASALLE STREET
- **STREET 2:** STE 4000
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60602
- **BUSINESS PHONE:** 3126301900

**MAIL ADDRESS:**
- **STREET 1:** 30 NORTH LASALLE STREET
- **STREET 2:** STE 4000
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60602

---

| | |
|:---|:---|
| **UNITED STATES** | **UNITED STATES** |
| **SECURITIES AND EXCHANGE COMMISSION** | **SECURITIES AND EXCHANGE COMMISSION** |
| **Washington, D.C. 20549** | **Washington, D.C. 20549** |
| **SCHEDULE 14A** | **SCHEDULE 14A** |
| **Proxy Statement Pursuant to Section 14(a) of** | **Proxy Statement Pursuant to Section 14(a) of** |
| **the Securities Exchange Act of 1934 (Amendment No.)** | **the Securities Exchange Act of 1934 (Amendment No.)** |
| Filed by the Registrant ☒ | Filed by the Registrant ☒ |
| Filed by a Party other than the Registrant ☐ | Filed by a Party other than the Registrant ☐ |
| Check the appropriate box: | Check the appropriate box: |
| ☐ | Preliminary Proxy Statement |
| ☐ | **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))** |
| ☐ | Definitive Proxy Statement |
| ☒ | Definitive Additional Materials |
| ☐ | Soliciting Material Pursuant to §240.14a-12 |
| **Telephone and Data Systems, Inc.** | **Telephone and Data Systems, Inc.** |
| (Name of Registrant as Specified In Its Charter) | (Name of Registrant as Specified In Its Charter) |
| (Name of Person(s) Filing Proxy Statement, If other than the Registrant) | (Name of Person(s) Filing Proxy Statement, If other than the Registrant) |
| Payment of Filing Fee (Check all boxes that apply): | Payment of Filing Fee (Check all boxes that apply): |
| ☒ | No fee required. |
| ☐ | Fee paid previously with preliminary materials. |
| ☐ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

---

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