Sec Form 4 Filing - CARLSON LEROY T JR @ TELEPHONE & DATA SYSTEMS INC /DE/ - 2024-08-08

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person CARLSON LEROY T JR 2. Issuer Name and Ticker or Trading Symbol TELEPHONE & DATA SYSTEMS INC /DE/ [ TDS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 30 N. LASALLE STREET, SUITE 4000 3. Date of Earliest Transaction (MM/DD/YY) 08/08/2024 (Street) CHICAGO, IL60602 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Shares 08/08/2024 G( 1 ) 472,356.53 D $ 0 0 D Common Shares 08/08/2024 G( 1 ) V 472,356.53 A $ 0 472,356.53 I By Trust Common Shares 08/08/2024 G( 1 ) 111,940.19 D $ 0 1,812,451 ( 2 ) I By Voting Trust Common Shares 08/08/2024 G( 1 ) V 111,940.19 A $ 0 1,812,451 ( 2 ) I By Voting Trust Common Shares 08/08/2024 G( 1 ) 178,686.15 D $ 0 1,812,451 ( 2 ) I By Voting Trust Common Shares 08/08/2024 G( 1 ) V 178,686.15 A $ 0 1,812,451 ( 2 ) I By Voting Trust Common Shares 08/08/2024 G( 1 ) 105,521.32 D $ 0 0 I By Wife Common Shares 08/08/2024 G( 1 ) V 105,521.32 A $ 0 105,521.32 I By Wife's Trust Common Shares 211,758 I By Trust Common 78,943 I By Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Series A Common Shares ( 3 ) 08/08/2024 G( 1 ) 18,104.18 ( 3 ) ( 3 ) Common Shares 18,104.18 $ 0 0 D Series A Common Shares ( 3 ) 08/08/2024 G( 1 ) V 18,104.18 ( 3 ) ( 3 ) Common Shares 18,104.18 $ 0 18,104.18 I By Trust Series A Common Shares ( 3 ) 08/08/2024 G( 1 ) 58,426.43 ( 3 ) ( 3 ) Common Shares 58,426.43 $ 0 1,978,228 ( 4 ) I By Voting Trust Series A Common Shares ( 3 ) 08/08/2024 G( 1 ) V 58,426.43 ( 3 ) ( 3 ) Common Shares 58,426.43 $ 0 1,978,228 ( 4 ) I By Voting Trust Series A Common Shares ( 3 ) 08/08/2024 G( 1 ) 2,088.53 ( 3 ) ( 3 ) Common Shares 2,088.53 $ 0 1,978,228 ( 4 ) I By Voting Trust Series A Common Shares ( 3 ) 08/08/2024 G( 1 ) V 2,088.53 ( 3 ) ( 3 ) Common Shares 2,088.53 $ 0 1,978,228 ( 4 ) I By Voting Trust Series A Common Shares ( 3 ) 08/08/2024 G( 1 ) 296.91 ( 3 ) ( 3 ) Common Shares 296.91 $ 0 0 I By Wife Series A Common Shares ( 3 ) 08/08/2024 G( 1 ) V 296.91 ( 3 ) ( 3 ) Common Shares 296.91 $ 0 296.91 I By Wife's Trust Series A Common Shares ( 3 ) ( 3 ) ( 3 ) Common Shares 11,424 11,424 I By Trust Series A Common Shares ( 3 ) ( 3 ) ( 3 ) Common Shares 12,734 12,734 I By Trust

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other CARLSON LEROY T JR 30 N. LASALLE STREET, SUITE 4000 CHICAGO, IL60602 X President and CEO Signatures Julie D. Mathews, by power of atty 08/09/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Reporting person and his spouse each gifted to their trusts. ( 2 )Reporting person is a member of the Voting Trust which separately files on Forms 4 for the issuer. The Common Shares reported are held by reporting person and his family members that have a pecuniary interest in such shares. Includes 693,549 Common Shares held by a family partnership of which reporting person is a general partner. ( 3 )Series A Common shares are convertible, on a share-for-share basis, into Common Shares. ( 4 )Reporting person is a member of the Voting Trust which separately files on Forms 4 for the issuer. The Common Shares reported are held by reporting person and his family members that have a pecuniary interest in such shares. Includes 756,093 Common Shares held by a family partnership of which reporting person is a general partner.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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