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| UNITED STATES | |
| SECURITIES AND EXCHANGE COMMISSION | |
| Washington, D.C. 20549 | |
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| SCHEDULE 14A | |
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| Proxy Statement Pursuant to Section 14(a) of | |
| the Securities Exchange Act of 1934 (Amendment No. ) | |
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| Filed by the Registrant ☒ | |
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| Filed by a Party other than the Registrant ☐ | |
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| 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 | |
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| Telephone and Data Systems, Inc. | |
| (Name of Registrant as Specified In Its Charter) | |
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| (Name of Person(s) Filing Proxy Statement, If other than the Registrant) | |
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| 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. | |
