SECTION 16 OF THE
SECURITIES EXCHANGE ACT OF 1934

POWER OF ATTORNEY


KNOW ALL MEN BY THESE PRESENTS THAT I, Vincenzo J. Vena,
Chief Executive Officer of Union Pacific Corporation, a Utah
corporation (the "Company"), do hereby appoint Craig V. Richardson,
John A. Menicucci, Jr., Trevor L. Kingston and Nicole M. Deardorff,
and each of them acting individually, as my true and lawful
attorney-in-fact, each with power to act without the other in full
power of substitution, to execute, deliver and file, for and on my
behalf, and in my name and in my capacity as an officer of Union
Pacific Corporation, any and all Forms 3, Forms 4 or Forms 5 under
Section 16 of the Securities Exchange Act of 1934 and the rules
and interpretations promulgated thereunder, and any other documents
in support thereof or supplemental or amendatory thereto, with
respect to the ownership by or attributable to me, directly or
indirectly, of equity securities of the Company, or derivative
securities relating thereto, hereby granting to such attorneys and
each of them full power and authority to do and perform each and
every act and thing whatsoever as such attorney or attorneys
may deem necessary or advisable to carry out fully the intent
of the foregoing as I might or could do personally or in my
capacity as an officer, hereby ratifying and confirming all
acts and things which such attorney or attorneys may do or cause
to be done by virtue of this Power of Attorney.

IN WITNESS WHEREOF, I have executed this Power of Attorney as of
August 14, 2023.


/s/ Vincenzo J. Vena
__________________________________
Vincenzo J. Vena