Exhibit 24

                           LIMITED POWER OF ATTORNEY

                               February 22, 2024

Know all by these presents, that the undersigned hereby makes, constitutes and
appoints each of Lauren Fisher and Marc Sher as the undersigned's true and
lawful attorney-in-fact, with full power and authority as hereinafter described
on behalf of and in the name, place and stead of the undersigned to:

1.    Prepare, execute, acknowledge, deliver and file Forms 144, Schedules 13G
      or 13D, and Forms 3, 4, and 5 (including any amendments thereto),
      including applications for Form ID, and any actions or documents necessary
      to facilitate the timely filing of notices of proposed sales and
      beneficial ownership reports, with respect to the securities of TEGNA
      Inc., a Delaware corporation (the "Company"), with the United States
      Securities and Exchange Commission, any national securities exchanges and
      the Company, as considered necessary or advisable under Rule 144
      promulgated under the Securities Act of 1933, as amended from time to time
      (the "Securities Act") and/or Sections 13(d) and 16(a) of the Securities
      Exchange Act of 1934 and the rules and regulations promulgated thereunder,
      as amended from time to time (the "Exchange Act");

2.    Seek or obtain, as the undersigned's representative and on the
      undersigned's behalf, information on transactions in the Company's
      securities from any third party, including brokers, employee benefit plan
      administrators and trustees, and the undersigned hereby authorizes any
      such person to release any such information to the undersigned and
      approves and ratifies any such release of information; and

3.    Perform any and all other acts which in the discretion of the
      attorney-in-fact are necessary or desirable for and on behalf of the
      undersigned in connection with the foregoing.

The undersigned acknowledges that:

1.    This Limited Power of Attorney authorizes, but does not require, each
      attorney-in-fact to act in his or her discretion on information provided
      to each such attorney-in-fact without independent verification of such

2.    Any documents prepared and/or executed by an attorney-in-fact on behalf of
      the undersigned pursuant to this Limited Power of Attorney will be in such
      form and will contain such information and disclosure as each such
      attorney-in-fact, in his or her discretion, deems necessary or desirable;

3.    None of the Company or any such attorney-in-fact assumes (i) any liability
      for the undersigned's responsibility to comply with the requirements of
      the Exchange Act, (ii) any liability of the undersigned for any failure to
      comply with such requirements, or (iii) any obligation or liability of the
      undersigned for profit disgorgement under Section 13 or 16 of the Exchange
      Act; and

4.    This Limited Power of Attorney does not relieve the undersigned from
      responsibility for compliance with the undersigned's obligations under the
      Securities Act or the Exchange Act, including without limitation the
      reporting requirements under Rule 144 under the Securities Act or Sections
      13(d) and 16 of the Exchange Act. The undersigned hereby gives and grants
      each attorney-in-fact full power and authority to do and perform all and
      every act and thing whatsoever requisite, necessary or appropriate to be
      done in and about the foregoing matters as fully to all intents and
      purposes as the undersigned might or could do if present, hereby ratifying
      all that each such attorney-in-fact of, for and on behalf of the
      undersigned, shall lawfully do or cause to be done by virtue of this
      Limited Power of Attorney.

This Limited Power of Attorney shall remain in full force and effect until
revoked by the undersigned in a signed writing delivered to each

IN WITNESS WHEREOF, the undersigned hereto has caused this Limited Power of
Attorney to be duly executed as of the day and year first above written.

                             By: /s/ Thomas R. Cox
                             Name: Thomas R. Cox

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