Bond Union Pacific Railroad 3.25% ( US907818FK90 ) in USD

Union Pacific Railroad

69.032 % ▲

United States

US907818FK90 ( in USD )

3.25% per year ( payment 2 times a year)

05/02/2050

Prospectus brochure of the bond Union Pacific US907818FK90 en USD 3.25%, maturity 05/02/2050

2 000 USD

1 750 000 000 USD

907818FK9

A- ( Upper medium grade - Investment-grade )

A3 ( Upper medium grade - Investment-grade )

05/08/2025 ( In 88 days )

Union Pacific Railroad is a major Class I freight railroad operating in the western two-thirds of the United States.

The Bond issued by Union Pacific Railroad ( United States ) , in USD, with the ISIN code US907818FK90, pays a coupon of 3.25% per year.
The coupons are paid 2 times per year and the Bond maturity is 05/02/2050

The Bond issued by Union Pacific Railroad ( United States ) , in USD, with the ISIN code US907818FK90, was rated A3 ( Upper medium grade - Investment-grade ) by Moody's credit rating agency.

The Bond issued by Union Pacific Railroad ( United States ) , in USD, with the ISIN code US907818FK90, was rated A- ( Upper medium grade - Investment-grade ) by Standard & Poor's ( S&P ) credit rating agency.

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CALCULATION OF REGISTRATION FEE

Amount
Maximum
Maximum
Title of Each Class of
to be
Offering Price
Aggregate
Amount of
Securities to be Registered

Registered

Per Unit

Offering Price

Registration Fee(1)
3.250% Senior Notes due 2050

$750,000,000

94.451%

$708,382,500

$91,948.05

(1)
Calculated in accordance with Rule 457(r) under the Securities Act of 1933.
Table of Contents
Filed Pursuant to Rule 424(b)(5)
Registration Number 333-222979

Prospectus Supplement
(To Prospectus Dated February 12, 2018)

$750,000,000 3.250% Notes due 2050

Union Pacific Corporation (the "Company") is offering $750,000,000 aggregate principal amount of 3.250% notes due 2050 (the "notes"). The notes
will mature on February 5, 2050. The notes offered hereby form a part of the series of our currently outstanding 3.250% notes due 2050 and have the same
terms as the existing notes of this series issued by us on January 31, 2020 (the "existing notes"), except the issue date. The notes will have the same CUSIP
and ISIN numbers as the existing notes and will trade interchangeably with the existing notes immediately upon settlement. The notes offered hereby and
the existing notes previously issued by us will constitute a single series under the indenture for all purposes. Upon issuance of the notes, the aggregate
principal amount outstanding of our 3.250% notes due 2050 will be $1,750,000,000.
We will pay interest on the notes semi-annually in arrears on each February 5 and August 5, commencing August 5, 2020.
We may redeem some or all of the notes at any time and from time to time at the redemption price described in this prospectus supplement under the
heading "Description of the Notes--Optional Redemption." There is no sinking fund for the notes. If we experience a change of control repurchase event,
we may be required to offer to purchase the notes from holders. See "Description of the Notes--Change of Control Repurchase Event."
Investing in our notes involves risks. See "Risk Factors" beginning on page S-2 of this prospectus supplement and on page 3 of the
accompanying prospectus.

Price to
Underwriting
Proceeds to the Company

Public(1)

Discount

before expenses

Per Note

94.451%
0.750%

93.701%
Total

$708,382,500
$ 5,625,000
$
702,757,500

(1)
Plus accrued interest (a) totaling $4,536,458.33 (accrued from January 31, 2020 (the date of issuance of the existing notes) to April 7, 2020) and
(b) from April 7, 2020, if any.
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or
determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a
criminal offense.
Delivery of the notes, in book-entry form only through The Depository Trust Company ("DTC"), will be made on or about April 7, 2020. Beneficial
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interests in the notes will be shown on, and transfers thereof will be effected only through, records maintained by DTC and its direct and indirect
participants, including Clearstream Banking, société anonyme, and Euroclear Bank S.A./N.V., as operator of the Euroclear system.

Joint Book-Running Managers

BofA Securities

SunTrust Robinson Humphrey

US Bancorp
Co-Managers

Mizuho Securities

PNC Capital Markets LLC

The date of this prospectus supplement is March 31, 2020.
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We are solely responsible for the information contained in this prospectus supplement and the accompanying prospectus. We have not authorized
anyone to provide you with different information. We do not take responsibility for any other information that others may give you. This prospectus
supplement and the accompanying prospectus are not an offer to sell or a solicitation of an offer to buy the securities in any jurisdiction or under any
circumstances in which the offer or sale is unlawful. You should not assume that the information contained in this prospectus supplement and the
accompanying prospectus is accurate as of any date other than the date of this prospectus supplement or the date of such information.
TABLE OF CONTENTS
Prospectus Supplement

Page
THE COMPANY
S-1
RECENT DEVELOPMENTS
S-1
RISK FACTORS
S-2
USE OF PROCEEDS
S-4
DESCRIPTION OF THE NOTES
S-5
UNITED STATES TAXATION
S-11
UNDERWRITING
S-12
LEGAL MATTERS
S-18
WHERE YOU CAN FIND MORE INFORMATION
S-19
INCORPORATION BY REFERENCE
S-20
EXPERTS
S-21
Prospectus

Page
ABOUT THIS PROSPECTUS

1
CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

1
THE COMPANY

2
RISK FACTORS

3
RATIO OF EARNINGS TO FIXED CHARGES

3
USE OF PROCEEDS

3
DESCRIPTION OF DEBT SECURITIES

3
DESCRIPTION OF PREFERRED STOCK

12
DESCRIPTION OF COMMON STOCK

15
DESCRIPTION OF SECURITIES WARRANTS

17
PLAN OF DISTRIBUTION

19
LEGAL MATTERS

19
WHERE YOU CAN FIND MORE INFORMATION

19
INCORPORATION BY REFERENCE

19
EXPERTS

20
The terms "Union Pacific," "Company," "we," "us" and "our" used in this prospectus supplement refer to Union Pacific Corporation (together with
its subsidiaries) unless the context otherwise requires.
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THE COMPANY
Overview
Union Pacific Corporation owns Union Pacific Railroad Company, its principal operating subsidiary and one of America's most recognized
companies. Union Pacific Railroad Company links 23 states in the western two-thirds of the country by rail, providing a critical link in the global supply
chain. Union Pacific Railroad Company's diversified business mix includes Bulk, Industrial and Premium. Union Pacific Railroad Company serves many
of the fastest-growing U.S. population centers, operates from all major West Coast and Gulf Coast ports to eastern gateways, connects with Canada's rail
systems and is the only railroad serving all six major Mexico gateways.
Our executive offices are located at 1400 Douglas Street, Omaha, Nebraska 68179, and our telephone number is (402) 544-5000. We will, upon
request, provide without charge to each person to whom this prospectus supplement and the accompanying prospectus are delivered, a copy of any or all of
the documents incorporated or deemed to be incorporated by reference into this prospectus supplement or the accompanying prospectus (other than exhibits
to such documents, unless such exhibits are specifically incorporated by reference into such documents). Written or oral requests should be directed to:
Union Pacific Corporation, 1400 Douglas Street, Omaha, Nebraska 68179, Attention: Corporate Secretary (telephone (402) 544-5000).
RECENT DEVELOPMENTS
The Company is providing an update regarding the ongoing COVID-19 coronavirus pandemic. The Cybersecurity and Infrastructure Security
Agency under the U.S. Department of Homeland Security has identified the Company as part of the United States critical infrastructure and the Company
continues to work to provide safe, efficient and reliable transportation services for its employees, customers, and communities. Despite these efforts, the
impact of the COVID-19 pandemic on the Company's 2020 financial and operating results, which may be material, is highly uncertain and depends on
numerous factors including but not limited to the impact of federal, state and local government regulations; the effect of the pandemic's economic impact
on demand for the Company's services; and potential disruption to global supply chains.

S-1
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RISK FACTORS
An investment in the notes involves a number of risks, including those described below and those incorporated by reference into this prospectus
supplement. You should carefully consider these risk factors and the other information included or incorporated by reference in this prospectus supplement
and the accompanying prospectus before you decide to purchase any notes.
Risks Relating to the Notes
The indenture does not restrict the amount of additional indebtedness that we may incur.
The indenture governing the notes does not place any limitation on the amount of unsecured indebtedness that we may incur. Our incurrence of
additional indebtedness may have important consequences for you as a holder of the notes, including making it more difficult for us to satisfy our
obligations with respect to the notes, reducing the market price of the notes and causing a risk that the credit rating of the notes will be lowered or
withdrawn. If we incur any additional indebtedness that ranks equally with the notes, the holders of that debt will be entitled to share ratably with the
holders of the notes and our existing unsecured debt in any proceeds distributed in connection with any insolvency, liquidation, reorganization, dissolution
or other winding up of our business.
There are limited covenants and protections in the indenture.
While the indenture and the notes contain terms intended to provide protection to holders upon the occurrence of certain events involving significant
corporate transactions, these terms are limited and may not be sufficient to protect your investment in the notes. For example, there are no financial
covenants in the indenture or any limitation to the amount of indebtedness that we may incur. In addition, the provisions in the indenture and the notes may
not protect you from certain important corporate events, such as a leveraged recapitalization (which would increase the level of our indebtedness),
reorganization, restructuring or another similar transaction.
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We may be unable to generate the cash flow to service our debt obligations, including the notes.
We cannot assure you that our future cash flow will be sufficient to allow us to meet our payment obligations on our debt, including the notes. Our
ability to generate cash flow from operations to make scheduled payments on our debt, including the notes, will depend on our future financial and
operating performance, which will be affected by a range of economic, competitive and business factors. We cannot control many of these factors, such as
general economic and financial conditions in the U.S. railroad industry, regulatory developments, downturns in the economy in general or the initiatives of
our competitors. Our ability to generate cash flow to meet our payment obligations under our debt, including the notes, may also depend on our successful
implementation of our operating and growth strategies. We cannot assure you that we will be able to implement our strategies or that the anticipated results
of our strategies will be realized. If we do not generate sufficient cash flow to satisfy our obligations under our debt, including the notes, we may have to
seek additional capital or undertake alternative financing plans, such as refinancing or restructuring our debt, or selling assets. Any of these actions could
result in unanticipated costs, disrupt the implementation of our business or otherwise hinder our performance. Moreover, we may not be able to take any of
these actions on commercially reasonable terms, or at all. Our inability to generate sufficient cash flow or to raise additional capital in order to satisfy our
obligations under our debt, including the notes, or to refinance them on commercially reasonable terms, would have a material adverse effect on our
business, financial condition and results of operations.
The notes will be unsecured and effectively subordinated to our future secured debt.
Holders of any secured indebtedness that we may incur will have claims that are prior to your claims as holders of the notes to the extent of the value
of the assets securing the secured indebtedness. The notes will be

S-2
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effectively subordinated to all of our future secured indebtedness to the extent of the value of the collateral. In the event of any distribution or payment of
our assets in any foreclosure, dissolution, winding-up, liquidation, reorganization or other bankruptcy proceeding, holders of secured indebtedness will
have prior claims to those of our assets that constitute their collateral. Holders of the notes will participate ratably with all holders of our unsecured
indebtedness that is deemed to be of the same class as the notes, and potentially with all of our other general creditors, based upon the respective amounts
owed to each holder or creditor, in our remaining assets. In any of the foregoing events, we cannot assure you that there will be sufficient assets to pay
amounts due on the notes. As a result, holders of the notes may receive less, ratably, than holders of secured indebtedness.
The notes will be structurally subordinated to all existing and future liabilities of our subsidiaries.
The notes will be structurally subordinated to all existing and future liabilities, including trade payables, of our subsidiaries, and the claims of
creditors of our subsidiaries, including trade creditors, will have priority as to the assets and cash flows of our subsidiaries. In the event of a bankruptcy,
liquidation, dissolution, reorganization or similar proceeding of any of our subsidiaries, holders of their liabilities, including their trade creditors, will
generally be entitled to payment on their claims from assets of those subsidiaries before any assets are made available for distribution to us. None of our
subsidiaries will guarantee the notes at the time of issuance.
We may not have sufficient funds, or the ability to raise sufficient funds, to satisfy our obligation to offer to repurchase the notes upon a change of
control triggering event.
Upon a change of control triggering event, as that term is defined in "Description of the Notes--Change of Control Repurchase Event" of this
prospectus supplement, we will be required to make an offer in cash to repurchase all or any part of each holder's notes at a price equal to 101% of the
aggregate principal amount of the notes repurchased, plus accrued and unpaid interest, if any. The source of funds for any such repurchase would be our
available cash or cash generated from operations or other sources, including borrowings, sales of equity or funds provided by a new controlling person or
entity. We cannot assure you that sufficient funds will be available at the time of any change of control triggering event to repurchase all tendered notes
pursuant to this requirement. Our failure to offer to repurchase notes, or to repurchase notes tendered, following a change of control triggering event will
result in a default under the indenture governing the notes.
Our credit ratings may not reflect the risks of investing in the notes.
Our credit ratings are an assessment by rating agencies of our ability to pay our debts when due. Consequently, real or anticipated changes in our
credit ratings may affect the market price of the notes. These credit ratings may not reflect the potential impact of risks relating to the structure or
marketing of the notes. Agency ratings are not a recommendation to buy, sell or hold any security and may be revised or withdrawn at any time by the
issuing organization. Each agency's rating should be evaluated independently of any other agency's rating. We do not, and the underwriters do not,
undertake any obligation to maintain the ratings or to advise holders of the notes of any change in ratings.
There may not be an active trading market for the notes.
The notes will constitute a further issuance under the indenture governing the existing notes and will constitute a single series under the indenture for
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all purposes. While certain of the underwriters may currently make a market in the existing notes, there is no guarantee that such trading market will be
maintained. If an active trading market is not maintained, the market price and liquidity of the notes may be adversely affected. In that case you may not be
able to sell your notes at a particular time or you may not be able to sell the notes at a favorable price.
No assurance can be given that there will be an active trading market for the notes.

S-3
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USE OF PROCEEDS
We expect to use the net proceeds from this offering for general corporate purposes, including the repurchase of common stock pursuant to our share
repurchase program.

S-4
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DESCRIPTION OF THE NOTES
The following description of the notes offered hereby supplements, and to the extent inconsistent therewith replaces, the description of the general
terms and provisions of the debt securities set forth in the accompanying prospectus, to which description reference is hereby made.
General
The notes are initially being offered in the principal amount of $750,000,000, will bear interest at 3.250% per annum, and will mature on February 5,
2050. Interest on the notes will be payable semi-annually on February 5 and August 5 of each year, commencing on August 5, 2020, to the persons in
whose name the note is registered, subject to certain exceptions as provided in the Indenture (as defined below), at the close of business on January 20 and
July 20, as the case may be (whether or not a Business Day), immediately preceding such February 5 and August 5. Interest payable on August 5, 2020 (the
first interest payment date for the notes offered hereby) will include interest accrued from January 31, 2020. We may, without the consent of the holders,
increase the principal amount of the notes in the future, on the same terms and conditions (except for the price to public, issue date and, if applicable, the
initial interest payment date), and with the same CUSIP and ISIN numbers, as the notes being offered hereby. We will not issue any such additional notes
unless the further notes trade interchangeably with the notes being offered hereby for U.S. federal income tax purposes. Interest on the notes will be paid
on the basis of a 360-day year consisting of twelve 30-day months. The notes will be issued under an indenture dated as of April 1, 1999 (as amended or
supplemented, the "Indenture"), between The Bank of New York Mellon Trust Company, N.A., as successor to The Bank of New York Mellon (formerly
known as The Bank of New York), as successor to JPMorgan Chase Bank, N.A. (formerly The Chase Manhattan Bank), as trustee (the "Trustee"), and us.
We previously issued $1,000,000,000 aggregate principal amount of 3.250% notes due 2050 (the "existing notes"), all of which will remain
outstanding following this offering. The notes will form a part of the series of the existing notes and will have the same terms as the existing notes other
than the issue date. The notes will have the same CUSIP and ISIN numbers as the existing notes and will trade interchangeably with the existing notes
immediately upon settlement. The notes and the existing notes will constitute a single series under the Indenture for all purposes. Upon issuance of the
notes, the aggregate principal amount outstanding of our 3.250% notes due 2050 will be $1,750,000,000. Unless the context requires otherwise, for all
purposes of the Indenture and this "Description of the Notes," references to the notes include the notes offered hereby and the existing notes.
The notes are senior, unsecured securities and will rank on parity with all of our other unsecured and unsubordinated indebtedness. As a holding
company, we have no material assets other than our ownership of the common stock of our subsidiaries. We will rely primarily upon distributions and
other amounts received from our subsidiaries to meet the payment obligations under the notes. Our subsidiaries are separate and distinct legal entities and
have no obligation, contingent or otherwise, to pay amounts due under the notes or to otherwise make any funds available to us. This includes the payment
of dividends or other distributions or the extension of loans or advances. Further, the ability of our subsidiaries to make any payments to us would be
dependent upon the terms of any credit facilities or other debt instruments of the subsidiaries and upon the subsidiaries' earnings, which are subject to
various business and other risks. In a bankruptcy or insolvency proceeding, claims of holders of the notes would be satisfied solely from our equity
interests in our subsidiaries remaining after the satisfaction of claims of creditors of the subsidiaries. Accordingly, the notes will be effectively subordinated
to existing and future liabilities of our subsidiaries to their respective creditors.
Optional Redemption
At any time and from time to time, the notes will be redeemable in whole or in part, at our option, at a redemption price equal to the greater of (i)
100% of the principal amount of the notes to be redeemed and (ii) the

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sum of the present values of the remaining scheduled payments of principal and interest on the notes to be redeemed that would be due if the notes matured
on the Par Call Date (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semi-annual basis (assuming a 360
day year consisting of twelve 30-day months) at the then-current Treasury Rate, plus 20 basis points, plus accrued and unpaid interest on the principal
amount of such notes being redeemed to the date of redemption; provided that if we redeem the notes on or after the Par Call Date, the redemption price for
the notes will be equal to 100% of the principal amount of the notes to be redeemed plus accrued and unpaid interest on the principal amount of such notes
being redeemed to the date of redemption.
For purposes of the foregoing, the following definitions are applicable:
"Treasury Rate" means, with respect to the notes, on any redemption date, the rate per annum equal to the semi-annual equivalent yield to maturity
of the related Comparable Treasury Issue, calculated using a price for that Comparable Treasury Issue (expressed as a percentage of its principal amount)
equal to the Comparable Treasury Price for such redemption date. The Treasury Rate shall be calculated on the third Business Day preceding the
redemption date.
"Business Day" means any calendar day that is not a Saturday, Sunday or legal holiday in New York, New York and on which banking institutions
and trust companies are open for business in New York, New York.
"Comparable Treasury Issue" means the United States Treasury security selected by an Independent Investment Banker as having a maturity
comparable to the remaining term of the notes to be redeemed (assuming, for this purpose, that the notes matured on the Par Call Date) that would be
utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable
maturity to the remaining term of the notes.
"Comparable Treasury Price" means, with respect to any redemption date, the average of the Reference Treasury Dealer Quotations for such
redemption date.
"Independent Investment Banker" means, each of Barclays Capital Inc., Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Morgan
Stanley & Co. LLC or their respective successors as appointed by us, or, if such firms are unwilling or unable to select the Comparable Treasury Issue, an
independent investment banking institution of national standing appointed by us.
"Par Call Date" means August 5, 2049, the date that is six months prior to the maturity date of the notes.
"Reference Treasury Dealer" means (a) each of Barclays Capital Inc., Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Morgan
Stanley & Co. LLC and their respective successors and affiliates; provided, however, that if any of the foregoing is not at the time a primary U.S.
Government securities dealer in New York City (a "Primary Treasury Dealer"), we shall substitute therefor another Primary Treasury Dealer; and (b) any
other Primary Treasury Dealer selected by the Independent Investment Banker after consultation with us.
"Reference Treasury Dealer Quotations" means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined
by the Independent Investment Banker, of the bid and asked prices for the related Comparable Treasury Issue (expressed in each case as a percentage of its
principal amount) quoted in writing to the Independent Investment Banker by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the
third Business Day preceding such redemption date.
Notice of the redemption will be transmitted to holders of the notes to be redeemed at least 30 and not more than 60 days prior to the date fixed for
redemption. If we elect to redeem fewer than all of the notes, in the case where the notes are issued in definitive form, not more than 60 days prior to the
redemption date, the particular

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notes or portions thereof for redemption from the outstanding notes not previously called for redemption shall be selected by the Trustee by lot; or, in the
case where the notes are represented by one or more global securities, beneficial interests in the notes will be selected for redemption by the applicable
depositary in accordance with its standard procedures therefor.
Change of Control Repurchase Event
If a change of control repurchase event occurs with respect the notes, unless we have exercised our right to redeem the notes as described above, we
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will be required to make an offer to each holder of the notes to repurchase all or any part (in integral multiples of $1,000) of that holder's notes at a
repurchase price in cash equal to 101% of the aggregate principal amount of the notes repurchased plus any accrued and unpaid interest on the notes
repurchased to, but not including, the date of repurchase. Within 30 days following a change of control repurchase event with respect to the notes or, at our
option, prior to a change of control, but after the public announcement of the change of control, we will deliver a notice to each holder of the notes, with a
copy to the Trustee, describing the transaction or transactions that constitute or may constitute the change of control repurchase event and offering to
repurchase the notes on the payment date specified in the notice, which date will be no earlier than 30 days and no later than 60 days from the date such
notice is sent. The notice shall, if sent prior to the date of consummation of the change of control, state that the offer to purchase is conditioned on a change
of control repurchase event occurring as to the notes on or prior to the payment date specified in the notice. We will comply with the requirements of Rule
14e-1 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any other securities laws and regulations thereunder to the extent
those laws and regulations are applicable in connection with the repurchase of the notes as a result of a change of control repurchase event. To the extent
that the provisions of any securities laws or regulations conflict with the change of control repurchase event provisions of the notes, we will comply with
the applicable securities laws and regulations and will not be deemed to have breached our obligations under the change of control repurchase event
provisions of the notes by virtue of such conflict.
On the repurchase date following a change of control repurchase event with respect the notes, we will, to the extent lawful:

(1)
accept for payment all of the notes or portions of the notes properly tendered pursuant to our offer;

(2)
deposit with the Trustee an amount equal to the aggregate purchase price in respect of all of the notes or portions of the notes properly

tendered; and

(3)
deliver or cause to be delivered to the paying agent the notes properly accepted, together with an officers' certificate stating the aggregate

principal amount of notes being purchased by us and that all conditions precedent provided for in the Indenture to the repurchase offer and to
the repurchase by us of the notes pursuant to the repurchase offer have been complied with.
The paying agent will promptly deliver to each holder of notes properly tendered the purchase price for the notes, and the Trustee will promptly
authenticate and deliver (or cause to be transferred by book-entry) to each holder a new note of the same series equal in principal amount to any
unpurchased portion of any notes surrendered; provided that each new note will be in a principal amount of an integral multiple of $1,000.
We will not be required to make an offer to repurchase the notes of a series upon a change of control repurchase event with respect to such series if a
third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by us and such third party
purchases all notes of such series properly tendered and not withdrawn under its offer.
For purposes of the foregoing discussion of a repurchase at the option of holders, the following definitions are applicable:
"below investment grade ratings event" means, with respect to the notes, on any day within the 60 day period (which period shall be extended so
long as the rating of the notes is under publicly announced

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consideration for a possible downgrade by any of the rating agencies) after the earlier of (1) the occurrence of a change of control; or (2) public notice of
the occurrence of a change of control or the intention by Union Pacific to effect a change of control, the notes are rated below investment grade by each of
the rating agencies. Notwithstanding the foregoing, a below investment grade ratings event otherwise arising by virtue of a particular reduction in rating
shall not be deemed to have occurred in respect of a particular change of control (and thus shall not be deemed a below investment grade ratings event for
purposes of the definition of change of control repurchase event hereunder) if the rating agencies making the reduction in rating to which this definition
would otherwise apply do not announce or publicly confirm or inform the Trustee in writing at our request that the reduction was the result, in whole or in
part, of any event or circumstance comprised of or arising as a result of, or in respect of, the applicable change of control (whether or not the applicable
change of control shall have occurred at the time of the ratings event).
"change of control" means the consummation of any transaction (including, without limitation, any merger or consolidation) the result of which is
that any "person" or "group" (as those terms are used in Section 13(d)(3) of the Exchange Act), other than Union Pacific or our subsidiaries, becomes the
beneficial owner (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, of more than 50% of the combined voting power of
our voting stock or other voting stock into which our voting stock is reclassified, consolidated, exchanged or changed, measured by voting power rather
than number of shares.
"change of control repurchase event" means, with respect to the notes, the occurrence of both a change of control and a below investment grade
ratings event.
"investment grade" means a rating of Baa3 or better by Moody's (or its equivalent under any successor rating categories of Moody's); a rating of
BBB- or better by S&P (or its equivalent under any successor rating categories of S&P); and the equivalent investment grade credit rating from any
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additional rating agency or rating agencies selected by us.
"Moody's" means Moody's Investors Service, Inc. and its successors.
"rating agency" means (1) each of Moody's and S&P; and (2) if either of Moody's or S&P ceases to rate the notes or fails to make a rating of those
notes publicly available for reasons outside of our control, a "nationally recognized statistical rating organization" within the meaning of Rule 17g-1 under
the Exchange Act, selected by us (as certified by a resolution of our board of directors) as a replacement agency for Moody's or S&P, or both of them, as
the case may be.
"S&P" means S&P Global Ratings, a division of S&P Global Inc., and its successors.
"voting stock" of any specified "person" (as that term is used in Section 13(d)(3) of the Exchange Act) as of any date means the capital stock of such
person that is at the time entitled to vote generally in the election of the board of directors of such person.
The change of control repurchase event feature of the notes may in certain circumstances make more difficult or discourage a sale or takeover of
Union Pacific and, thus, the removal of incumbent management. We could, in the future, enter into certain transactions, including asset sales, acquisitions,
refinancings or other recapitalizations, that would not constitute a change of control repurchase event under the notes, but that could increase the amount of
indebtedness outstanding at such time or otherwise affect our capital structure or credit ratings on the notes.
We may not have sufficient funds to repurchase all of the notes upon a change of control repurchase event.
Sinking Fund
There is no provision for a sinking fund for the notes.

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Defeasance
Under certain circumstances, we will be deemed to have discharged the entire indebtedness on all of the outstanding notes by defeasance. See
"Description of Debt Securities--Defeasance of the Indentures and Debt Securities" in the accompanying prospectus for a description of the terms of any
such defeasance and the tax consequences thereof. The provisions of Section 403 of the Indenture relating to defeasance and discharge of indebtedness will
apply to the notes.
Book-Entry System
The notes will be issued in the form of one or more fully registered global securities ("Global Securities") that will be deposited with, or on behalf
of, The Depository Trust Company ("DTC" or the "Depository") and registered in the name of the Depository's nominee.
Upon the issuance of a Global Security, the Depository will credit, on its book-entry registration and transfer system, the principal amount of the
notes represented by such Global Security to the accounts of institutions that have accounts with the Depository or its nominee ("Participants"). The
accounts to be credited will be designated by the underwriters, dealers or agents. Ownership of beneficial interests in a Global Security will be shown on,
and the transfer of that ownership will be effected only through, records maintained by the Depository (with respect to Participants' interests), the
Participants and others such as banks, brokers, dealers and trust companies that clear through or maintain a custodial relationship with Participants, either
directly or indirectly ("indirect participants"). The laws of some states may require that certain persons take physical delivery in definitive form of
securities which they own. Consequently, such persons may be prohibited from purchasing beneficial interests in a Global Security from any beneficial
owner or otherwise.
So long as the Depository's nominee is the registered owner of a Global Security, such nominee for all purposes will be considered the sole owner or
holder of the notes represented by such Global Security for all purposes under the Indenture. Except as provided below, owners of beneficial interests in a
Global Security will not be entitled to have any of the notes represented by such Global Security registered in their names, will not receive or be entitled to
receive physical delivery of the notes in definitive form and will not be considered the owners or holders thereof under the Indenture. Accordingly, each
person owning a beneficial interest in a Global Security must rely on the procedures of the Depository and, if such person is not a Participant, on the
procedures of the Participant and, if applicable, the indirect participant through which such person owns its interest, to exercise any rights of a holder under
the Indenture. We understand that under existing practice, in the event that we request any action of the holders or a beneficial owner desires to take any
action a holder is entitled to take, the Depository would act upon the instructions of, or authorize, the Participant to take such action.
We expect that the Depository or its nominee, upon receipt of any payment of principal or interest, will immediately credit the accounts of the
Participants with such payments in amounts proportionate to their respective beneficial interests in the principal amount of such Global Security as shown
on the records of the Depository or such nominee.
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If DTC is at any time unwilling, unable or ineligible to continue as depositary for a Global Security and a successor depositary is not appointed by
the Company within 90 days, we will issue certificated notes in definitive form in exchange for such Global Security. In addition, we may at any time
determine not to have the notes represented by a Global Security, and, in such event, will issue (subject to the procedures of the Depository) certificated
notes in definitive form in exchange for such Global Security. In either instance, an owner of a beneficial interest in a Global Security will be entitled to
physical delivery of certificated notes in definitive form equal in principal amount to such beneficial interest in such Global Security and to have such
certificated notes registered in its name. Certificated notes so issued in definitive form will be issued in denominations of $1,000 and integral multiples
thereof and will be issued in registered form only, without coupons.

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See "Description of Debt Securities" in the accompanying prospectus for additional information concerning the notes, the Indenture and the book-
entry system.

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UNITED STATES TAXATION
Qualified Reopening
The notes offered hereby will be issued in a "qualified reopening" of the existing notes for U.S. federal income tax purposes. Accordingly, the notes
offered hereby will be considered to have the same issue date and issue price as the existing notes.
Pre-issuance Accrued Interest
A portion of the price paid for the notes offered hereby is allocable to interest that accrued prior to the date such notes were purchased (the
"pre-issuance accrued interest"). On the first interest payment date, a portion of the interest received in an amount equal to the pre-issuance accrued
interest will be treated as a return of the pre-issuance accrued interest and not as a payment of interest on such notes. The amount treated as a return of
pre-issuance accrued interest is not taxable when received but reduces the holder's tax basis in such notes by a corresponding amount (in the same manner
as would a payment of principal).
Amortizable Premium
For U.S. federal income tax purposes, the notes offered hereby will be considered to be issued at par, even though, considered separately, such notes
may be issued at a premium equal to the excess of the offering price of such notes (excluding pre-issuance accrued interest) over their principal amount.
Generally, a holder that is a "United States person" within the meaning of the Internal Revenue Code of 1986, as amended (a "U.S. Holder"), may
elect to amortize such premium as an offset to stated interest income in respect of the notes offered hereby, using a constant yield method prescribed under
applicable Treasury regulations, over the remaining term of such notes, subject to certain limitations. If a U.S. Holder elects to amortize the premium, such
U.S. Holder must reduce the basis in such notes by the amount of the aggregate amortization deductions allowable for the premium.
If a U.S. Holder makes an election to amortize bond premium, it will apply to all debt instruments, other than debt instruments the interest on which
is excludible from gross income, that it owns at the beginning of the first taxable year to which the election applies, and to all debt instruments that it
thereafter acquires. A U.S. Holder may not revoke an election to amortize bond premium without the consent of the Internal Revenue Service. If a U.S.
Holder does not elect to amortize the premium, that premium will decrease the gain or increase the loss that would otherwise be recognized on disposition
of the notes offered hereby.
The rules relating to amortizable premium, the determination of the accrual period for any such premium and the effect of an election to amortize
premium are complex, and prospective investors should consult their own tax advisor regarding the application of these rules in their particular
circumstances.

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UNDERWRITING
BofA Securities, Inc., SunTrust Robinson Humphrey, Inc. and U.S. Bancorp Investments, Inc. are acting as joint book-running managers for the
offering and BofA Securities, Inc. is acting as representative for the underwriters named below. Under the terms and subject to the conditions contained in
an underwriting agreement dated March 31, 2020, we have agreed to sell to the underwriters, and each underwriter has severally agreed to purchase, the
aggregate principal amount of the notes set forth opposite their names in the following table:

Principal
Amount of the
Underwriter

Notes

BofA Securities, Inc.

$
510,000,000
SunTrust Robinson Humphrey, Inc.

82,500,000
U.S. Bancorp Investments, Inc.

82,500,000
Mizuho Securities USA LLC

37,500,000
PNC Capital Markets LLC

37,500,000

Total

$
750,000,000

The underwriting agreement provides that the underwriters are obligated to purchase all of the notes if any are purchased.
The underwriters propose to offer the notes at the public offering price on the cover page of this prospectus supplement and may offer notes to certain
other broker-dealers at those prices less selling concessions of 0.450%, of the notes. The underwriters and such broker-dealers may allow discounts of
0.300% of the principal amount of the notes on sales to other broker-dealers. After the initial public offering the representative may change the public
offering prices and concessions and discounts to broker-dealers.
The following table shows the underwriting discount that we are to pay to the underwriters in connection with this offering (expressed as a
percentage of the principal amount of the notes):

Paid by Union
Pacific

Corporation
Per Note

0.750%
We estimate that our out-of-pocket expenses (excluding the underwriting discount) for this offering will be approximately $100,000.
We do not intend to apply for the notes to be listed on any securities exchange or to arrange for the notes to be quoted on any quotation system. The
underwriters may continue to make a secondary market for the notes. However, they are not obligated to do so and may discontinue making a secondary
market for the notes at any time without notice. No assurance can be given as to how liquid the trading market for the notes will be.
We have agreed to indemnify the several underwriters against liabilities under the Securities Act of 1933, as amended, or contribute to payments
which the underwriters may be required to make in that respect.
In connection with the offering, the underwriters may engage in stabilizing transactions, syndicate covering transactions and penalty bids in
accordance with Regulation M under the Exchange Act.

· Stabilizing transactions permit bids to purchase the underlying security so long as the stabilizing bids do not exceed a specified

maximum.

· Over-allotment involves sales by the underwriters of the notes in excess of the principal amount of the notes the underwriters are

obligated to purchase, which creates a syndicate short position.

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· Syndicate covering transactions involve purchases of the notes in the open market after the distribution has been completed in order to
cover syndicate short positions. A short position is more likely to be created if the underwriters are concerned that there may be

downward pressure on the price of the notes in the open market after pricing that could adversely affect investors who purchase in the
offering.

· Penalty bids permit the representative to reclaim a selling concession from a syndicate member when the notes originally sold by the

syndicate member are purchased in a stabilizing transaction or a syndicate covering transaction to cover syndicate short positions.
These stabilizing transactions, syndicate covering transactions and penalty bids may have the effect of raising or maintaining the market price of the
notes or preventing or retarding a decline in the market price of the notes. As a result, the price of the notes may be higher than the price that might
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