Please wait



Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Checkbox not checked   Rule 13d-1(b)
Checkbox not checked   Rule 13d-1(c)
Checkbox not checked   Rule 13d-1(d)


X0202 SCHEDULE 13D/A 0000913115 XXXXXXXX LIVE 12 Common Shares ($0.01 par value) 05/07/2026 false 0001051512 879433829 Telephone and Data Systems, Inc. 30 North LaSalle Suite 4000 Chicago IL 60602 Walter C. D. Carlson 312-630-1900 30 North LaSalle Street Suite 4000 Chicago IL 60602 0000913115 N The Trustees of Amendment and Restatement (dated as of April 22, 2005) of Voting Trust under Agreement dated as of June 30, 1989 a OO N DE 0.00 13517699.00 0.00 13517699.00 13517699.00 N 11.9 OO 1. Shared voting and dispositive power and the aggregate amount beneficially owned by the reporting persons includes (i) 7,213,594 Series A Common Shares that have ten votes per share on all matters and are convertible on a share-for-share basis into Common Shares and (ii) 6,304,105 Common Shares. All of the Shares are held by the reporting persons as trustees of a Voting Trust. 2. Reporting persons may be deemed to hold approximately 95.6% of the outstanding Series A Common Shares of the Issuer and approximately 5.9% of the outstanding Common Shares of the Issuer for a combined total of approximately 11.9% of the Issuer's outstanding classes of capital stock and approximately 56.8% of the voting power on an aggregate basis. For all purposes in this Schedule 13D/A, the share amounts and percentages are based on 106,308,092 Common Shares and 7,542,212 Series A Common Shares issued and outstanding as of March 31, 2026. Common Shares ($0.01 par value) Telephone and Data Systems, Inc. 30 North LaSalle Suite 4000 Chicago IL 60602 This Amendment No. 12 to Schedule 13D is being filed pursuant to Section 13(d)(2) of the Securities Exchange Act of 1934, as amended, by a majority of the Trustees of the Voting Trust under the Amendment and Restatement (dated as of April 22, 2005) of Voting Trust Agreement Dated as of June 30, 1989. This Schedule 13D reports the ownership of Common Shares, par value $0.01 per share ("TDS Common Shares"), and Series A Common Shares, par value $0.01 per share ("TDS Series A Common Shares"), that are convertible on a share-for-share basis into TDS Common Shares, of Telephone and Data Systems, Inc., a Delaware corporation (the "Issuer"). This Amendment No. 12 to Schedule 13D is being filed by a majority of the trustees (all four trustees collectively referred to herein as, the "Trustees") of the Amendment and Restatement (dated as of April 22, 2005) of Voting Trust under Agreement Dated as of June 30, 1989 (the "Voting Trust"), concerning their direct and indirect beneficial ownership of TDS Common Shares. The information required under paragraph (a) with respect to the Trustees is set forth in Appendix A hereto, and incorporated herein by reference. The principal business address of the Voting Trust is c/o Walter C. D. Carlson, Telephone and Data Systems, Inc., 30 North LaSalle Street, Suite 4000, Chicago, Illinois 60602. The information required under paragraph (b) with respect to the Trustees is set forth in Appendix A hereto, and incorporated herein by reference. The Voting Trust holds TDS Common Shares and TDS Series A Common Shares and was created to facilitate long-standing relationships among the trust's certificate holders. Under the terms of the Voting Trust, the Trustees hold and vote the TDS Series A Common Shares and TDS Common Shares held in the trust. The information required under paragraph (c) with respect to the Trustees is set forth in Appendix A hereto, and incorporated herein by reference. During the last five years, neither the Voting Trust nor any of the Trustees identified in Appendix A hereto has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). During the last five years, neither the Voting Trust nor any of the Trustees thereof identified in Appendix A hereto was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction, and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. The Voting Trust is organized under Delaware law. The information required under paragraph (f) with respect to the Trustees is set forth in Appendix A hereto, and incorporated herein by reference. The information contained in Item 4 below is incorporated herein by reference. On May 7, 2026, the Issuer delivered to the board of directors (the "Array Board") of Array Digital Infrastructure, Inc. (formerly known as United States Cellular Corporation), a Delaware corporation ("Array"), a letter setting forth a non-binding proposal to acquire all of the outstanding Common Shares, par value $1.00 per share, of Array ("Array Common Shares") that are not owned by the Issuer (the "Proposal"). A copy of the Proposal is filed herewith as Exhibit 2, and the information set forth in the Proposal is incorporated herein by reference. In connection with the Proposal, the Issuer expects to engage in discussions with the Array Board (including any Special Committee formed by the Array Board) or their representatives. The Proposal may result in one or more of the transactions, events or actions specified in clauses (a) through (j) of Item 4 of Schedule 13D. No assurances can be given that the transaction contemplated by the Proposal or any other potential transaction involving the Issuer and Array will be consummated, or if a transaction is undertaken, as to its terms or timing. The Trustees do not intend to update this Schedule 13D regarding the Proposal until a definitive agreement has been reached, or an update is otherwise required under applicable law. The Trustees intend to maintain the ability to keep or dispose of the voting control of the Issuer. If and to the extent that Array remains a publicly-traded company, the Trustees intend that the Issuer maintain the ability to keep or dispose of the voting control of Array. The Trustees also retain the right to change their intent, to acquire additional securities from time to time or to dispose of all or part of the securities beneficially owned by the Voting Trust in any manner permitted by the terms of the Voting Trust and/or applicable law. As of the end of the trading day on March 31, 2026, pursuant to Rule 13d-3(d)(1)(i), the Voting Trust and each of the Trustees may be deemed to beneficially own an aggregate of 6,304,105 TDS Common Shares, and 7,213,594 TDS Series A Common Shares held by the Voting Trust that are convertible into 7,213,594 TDS Common Shares. See Appendix B hereto for additional TDS Common Shares beneficially owned by each of the Trustees. The following information is provided with respect to the shares held by the Voting Trust. See Appendix B hereto for information with respect to other shares beneficially owned by each of the Trustees. (i) Sole Power to Vote or Direct the Vote: None. (ii) Shared Power to Vote or Direct the Vote: The Voting Trust is the direct beneficial owner of TDS Common Shares and TDS Series A Common Shares that are convertible on a share-for-share basis into TDS Common Shares. The Voting Trust may be deemed to hold approximately 95.6% of the outstanding TDS Series A Common Shares and approximately 5.9% of the outstanding TDS Common Shares for a combined total of approximately 11.9% of the Issuer's outstanding classes of capital stock and approximately 56.8% of the voting power on an aggregate basis. The holders of TDS Common Shares are entitled to elect four of the current twelve directors of the Issuer. The Trustees hold 5.9% of the voting power in the election of such four directors. In addition, the holders of TDS Common Shares have votes per share that are subject to adjustment in matters other than the election of directors. The TDS Common Shares held by the Voting Trust represent approximately 2.6% of the combined voting power in matters other than the election of directors. The holders of TDS Series A Common Shares are entitled to elect eight of the current twelve directors of the Issuer. The reporting persons hold 95.6% of the voting power in the election of such eight directors. The TDS Series A Common Shares also have ten votes per share in matters other than the election of directors. The TDS Series A Common Shares held by the Voting Trust represent approximately 54.2% of the total combined voting power in matters other than the election of directors. As a result of the foregoing, the Voting Trust elects a majority of the directors and directs a majority of the combined voting power of the Issuer in matters other than the election of directors. (iii) Sole Power to Dispose or Direct the Disposition: None. (iv) Shared Power to Dispose or Direct the Disposition: The information contained in Item 5(b)(ii) above is incorporated herein by reference. Except as disclosed below, no transactions were effected during the past sixty days in TDS Common Shares or TDS Series A Common Shares by the Voting Trust or the Trustees. (i) On March 23, 2026, Prudence E. Carlson sold 5,811 Common Shares pursuant to a Rule 10b5-1 Plan. (ii) Transactions as a result of participation in TDS' Automatic Dividend Reinvestment Plans (under which the Voting Trust acquired 967 Series A Common Shares and 716 Common Shares at a per share price equal to $40.35 during the past 60 days). Except as disclosed below, no other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, TDS Common Shares or TDS Series A Common Shares beneficially owned by the Voting Trust. Under the terms of the Voting Trust, except to the extent necessary to pay Voting Trust expenses, all cash dividends are distributed to the beneficiaries of the Voting Trust. The Trustees do not have the power to sell any TDS Common Shares or TDS Series A Common Shares deposited by a certificate holder without the consent of such certificate holder. Not applicable. The Voting Trust was created to facilitate long-standing relationships among the trust's certificate holders. Under the terms of the Voting Trust, the Trustees hold and vote the TDS Series A Common Shares and TDS Common Shares held in the trust. The information contained in Item 5(b)(ii) above is incorporated herein by reference. Exhibit 1: Joint Filing Agreement and Signatures Exhibit 2: Letter, dated May 7, 2026, from the Issuer to the Array Board Appendix A Appendix B The Trustees of Amendment and Restatement (dated as of April 22, 2005) of Voting Trust under Agreement dated as of June 30, 1989 See Exhibit 1 See Exhibit 1 05/08/2026