10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2010

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number 1-6075

UNION PACIFIC CORPORATION

(Exact name of registrant as specified in its charter)

UTAH	13-2626465
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

1400 DOUGLAS STREET, OMAHA, NEBRASKA

(Address of principal executive offices)

68179

(Zip Code)

(402) 544-5000

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

þ  Yes     ¨  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

þ  Yes     ¨  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  þ    Accelerated filer  ¨    Non-accelerated filer  ¨    Smaller reporting company  ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).

¨  Yes     þ  No

As of April 16, 2010, there were 506,122,839 shares of the Registrant’s Common Stock outstanding.

TABLE OF CONTENTS

UNION PACIFIC CORPORATION

AND SUBSIDIARY COMPANIES

PART I. FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements:
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) For the Three Months Ended March 31, 2010 and 2009	3
CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Unaudited) At March 31, 2010 and December 31, 2009	4
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) For the Three Months Ended March 31, 2010 and 2009	5
CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN COMMON SHAREHOLDERS’ EQUITY (Unaudited)     For the Three Months Ended March 31, 2010 and 2009	6
NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)	7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	21
Item 3. Quantitative and Qualitative Disclosures About Market Risk	33
Item 4. Controls and Procedures	33
PART II. OTHER INFORMATION
Item 1. Legal Proceedings	33
Item 1A. Risk Factors	35
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	35
Item 3. Defaults Upon Senior Securities	35
Item 5. Other Information	35
Item 6. Exhibits	36
Signatures	37
Certifications

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PART I. FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements

Condensed Consolidated Statements of Income (Unaudited)

Union Pacific Corporation and Subsidiary Companies

Millions, Except Per Share Amounts, for the Three Months Ended March 31,	2010			2009
				(Adjusted)*
Operating revenues:
Freight revenues	$	3,755		$	3,240
Other revenues		210			175
Total operating revenues		3,965			3,415
Operating expenses:
Compensation and benefits		1,059			1,070
Fuel		583			386
Purchased services and materials		432			404
Depreciation		367			341
Equipment and other rents		290			317
Other		246			226
Total operating expenses		2,977			2,744
Operating income		988			671
Other income (Note 7)		1			23
Interest expense		(155	)		(141	)
Income before income taxes		834			553
Income taxes		(318	)		(191	)
Net income	$	516		$	362
Share and Per Share (Note 9):
Earnings per share – basic	$	1.02		$	0.72
Earnings per share – diluted	$	1.01		$	0.72
Weighted average number of shares – basic		504.5			502.7
Weighted average number of shares – diluted		508.7			504.6
Dividends declared per share	$	0.27		$	0.27

* Certain amounts have been adjusted for the retrospective change in accounting principle for rail grinding (See Note 3).

The accompanying notes are an integral part of these unaudited Condensed Consolidated Financial Statements.

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Condensed Consolidated Statements of Financial Position (Unaudited)

Union Pacific Corporation and Subsidiary Companies

Millions, Except Per Share Amounts	Mar. 31, 2010			Dec. 31, 2009
				(Adjusted)*
Assets
Current assets:
Cash and cash equivalents	$	1,753		$	1,850
Accounts receivable, net (Note 2)		1,218			666
Materials and supplies		506			475
Current deferred income taxes		355			339
Other current assets		280			350
Total current assets		4,112			3,680
Investments		1,036			1,036
Net properties (Note 11)		37,301			37,202
Other assets		263			266
Total assets	$	42,712		$	42,184
Liabilities and Common Shareholders’ Equity
Current liabilities:
Accounts payable and other current liabilities (Note 12)	$	2,670		$	2,470
Debt due within one year (Note 14)		239			212
Total current liabilities		2,909			2,682
Debt due after one year (Note 14)		9,480			9,636
Deferred income taxes		11,116			11,044
Other long-term liabilities		1,994			2,021
Commitments and contingencies (Note 15)
Total liabilities		25,499			25,383
Common shareholders’ equity:
Common shares, $2.50 par value, 800,000,000 authorized;
553,967,438 and 553,497,981 issued; 506,104,823 and 505,039,952
outstanding, respectively		1,385			1,384
Paid-in-surplus		3,959			3,968
Retained earnings		15,406			15,027
Treasury stock		(2,889	)		(2,924	)
Accumulated other comprehensive loss (Note 10)		(648	)		(654	)
Total common shareholders’ equity		17,213			16,801
Total liabilities and common shareholders’ equity	$	42,712		$	42,184

* Certain amounts have been adjusted for the retrospective change in accounting principle for rail grinding (See Note 3).

The accompanying notes are an integral part of these unaudited Condensed Consolidated Financial Statements.

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Condensed Consolidated Statements of Cash Flows (Unaudited)

Union Pacific Corporation and Subsidiary Companies

Millions, for the Three Months Ended March 31,	2010		2009
				(Adjusted)*
Operating Activities
Net income	$	516	$	362
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation		367		341
Deferred income taxes and unrecognized tax benefits		54		19
Net gain on non-operating asset dispositions		(4)		(6)
Other operating activities, net		36		(10)
Changes in current assets and liabilities:
Accounts receivable, net (Note 2)		(552)		46
Materials and supplies		(31)		4
Other current assets		70		(23)
Accounts payable and other current liabilities		200		(15)
Cash provided by operating activities		656		718
Investing Activities
Capital investments		(461)		(521)
Proceeds from asset sales		12		12
Acquisition of equipment pending financing		-		(113)
Other investing activities, net		(46)		(6)
Cash used in investing activities		(495)		(628)
Financing Activities
Debt issued (Note 2)		400		843
Debt repaid		(531)		(581)
Dividends paid		(135)		(136)
Other financing activities, net		8		1
Cash provided by/(used in) financing activities		(258)		127
Net change in cash and cash equivalents		(97)		217
Cash and cash equivalents at beginning of year		1,850		1,249
Cash and cash equivalents at end of period	$	1,753	$	1,466
Supplemental Cash Flow Information
Non-cash investing and financing activities:
Cash dividends declared but not yet paid	$	133	$	132
Capital investments accrued but not yet paid		60		72
Cash (paid)/refunded for:
Interest, net of amounts capitalized	$	(218)	$	(188)
Income taxes		136		59

* Certain amounts have been adjusted for the retrospective change in accounting principle for rail grinding (See Note 3).

The accompanying notes are an integral part of these unaudited Condensed Consolidated Financial Statements.

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Condensed Consolidated Statements of Changes in Common Shareholders’ Equity (Unaudited)

Union Pacific Corporation and Subsidiary Companies

Millions, Except Per Share Amounts	Common Shares	Treasury Shares		Common Shares	Paid-in- Surplus		Retained Earnings		Treasury Stock		AOCI [a]			Total
Balance at December 31, 2008	552.8	(49.6	)	$1,382	$3,949		$13,813		$(2,993	)	$	(704	)	$	15,447
Cumulative effect of change in accounting principle (Note 3)				-	-		(132	)	-			-			(132	)
Balance at January 1, 2009	552.8	(49.6	)	$1,382	$3,949		$13,681		$(2,993	)	$	(704	)	$	15,315
Comprehensive income:
Net income				-	-		362		-			-			362
Other comp. loss				-	-		-		-			(26	)		(26	)
Total comp. income/(loss) (Note 10)				-	-		362		-			(26	)		336
Conversion, stock option exercises, forfeitures, and other	0.7	0.2		2	(6	)	-		10			-			6
Cash dividends declared ($0.27 per share)	-	-		-	-		(135	)	-			-			(135	)
Balance at March 31, 2009	553.5	(49.4	)	$1,384	$3,943		$13,908		$(2,983	)	$	(730	)	$	15,522
.
Balance at December 31, 2009	553.5	(48.5	)	$1,384	$3,968		$15,167		$(2,924	)	$	(654	)	$	16,941
Cumulative effect of change in accounting principle (Note 3)				-	-		(140	)	-			-			(140	)
Balance at January 1, 2010	553.5	(48.5	)	$1,384	$3,968		$15,027		$(2,924	)	$	(654	)	$	16,801
Comprehensive income:
Net income				-	-		516		-			-			516
Other comp. income				-	-		-		-			6			6
Total comp. income (Note 10)				-	-		516		-			6			522
Conversion, stock option exercises, forfeitures, and other	0.5	0.6		1	(9	)	-		35			-			27
Cash dividends declared ($0.27 per share)	-	-		-	-		(137	)	-			-			(137	)
Balance at March 31, 2010	554.0	(47.9	)	$1,385	$3,959		$15,406		$(2,889	)	$	(648	)	$	17,213

[a] AOCI = Accumulated Other Comprehensive Income/(Loss) (See Note 10)

The accompanying notes are an integral part of these unaudited Condensed Consolidated Financial Statements.

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UNION PACIFIC CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

For purposes of this report, unless the context otherwise requires, all references herein to the “Corporation”, “UPC”, “we”, “us”, and “our” mean Union Pacific Corporation and its subsidiaries, including Union Pacific Railroad Company, which will be separately referred to herein as “UPRR” or the “Railroad”.

1. Basis of Presentation – Our Condensed Consolidated Financial Statements are unaudited and reflect all adjustments (consisting only of normal and recurring adjustments) that are, in the opinion of management, necessary for their fair presentation in conformity with accounting principles generally accepted in the United States of America. Our Consolidated Statement of Financial Position at December 31, 2009, is derived from audited financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with our Consolidated Financial Statements and notes thereto contained in our 2009 Annual Report on Form 10-K. The results of operations for the three months ended March 31, 2010, are not necessarily indicative of the results for the entire year ending December 31, 2010.

The Consolidated Financial Statements are presented in accordance with accounting principles generally accepted in the United States of America (GAAP) as codified in the Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC).

2. Adoption of New Accounting Pronouncement – In June 2009, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2009-16, Accounting for Transfers of Financial Assets (ASU 2009-16). ASU 2009-16 limits the circumstances in which transferred financial assets can be derecognized and requires enhanced disclosures regarding transfers of financial assets and a transferor’s continuing involvement with transferred financial assets. We adopted the authoritative accounting guidance on January 1, 2010. As a result, we no longer account for the value of the outstanding undivided interest held by investors under our receivables securitization facility as a sale. In addition, transfers of receivables occurring on or after January 1, 2010 are reflected as debt issued in our Condensed Consolidated Statements of Cash Flows and recognized as debt due after one year in our Condensed Consolidated Statements of Financial Position. See the discussion of our receivables securitization facility in Note 14.

3. Change in Accounting Principle – Effective January 1, 2010, we changed our accounting policy for rail grinding costs from a capitalization method, under which we capitalized the cost of rail grinding and depreciated such capitalized costs, to a direct expense method, under which we expense rail grinding costs as incurred. The expense as incurred method is preferable, as it eliminates the subjectivity in determining the period of benefit associated with rail grinding over which to depreciate the associated capitalized costs. This change was reflected as a change in accounting principle from an acceptable accounting principle to a preferable accounting principle. The application of the change in accounting principle is presented retrospectively to all periods presented.

The effects of the adjustments from 1992 (the year we started capitalizing rail grinding) to January 1, 2009 resulted in an adjustment to decrease net properties, deferred income taxes, and shareholders’ equity by $213 million, $81 million, and $132 million, respectively.

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The following tables show the effects of the change in our policy for rail grinding costs on the Condensed Consolidated Financial Statements:

Condensed Consolidated Statements of Income

	For the Three Months Ended March 31, 2010								For the Three Months Ended March 31, 2009
Millions, Except Per Share Amounts	Computed under Prior Method			Impact of Adjustment		As Reported			As Originally Reported			Impact of Adjustment		As Adjusted
Purchased services & materials	$	424		$	8	$	432		$	399		$	5	$	404
Depreciation	$	371		$	(4)	$	367		$	345		$	(4)	$	341
Total operating expenses	$	2,973		$	4	$	2,977		$	2,743		$	1	$	2,744
Operating income	$	992		$	(4)	$	988		$	672		$	(1)	$	671
Income before income taxes	$	838		$	(4)	$	834		$	554		$	(1)	$	553
Income taxes	$	(320)		$	2	$	(318	)	$	(192	)	$	1	$	(191)
Net income	$	518		$	(2)	$	516		$	362		$	-	$	362
Earnings per share – basic	$	1.03		$	(0.01)	$	1.02		$	0.72		$	-	$	0.72
Earnings per share – diluted	$	1.02		$	(0.01)	$	1.01		$	0.72		$	-	$	0.72
Condensed Consolidated Statements of Financial Position
	March 31, 2010								December 31, 2009
Millions	Computed under Prior Method			Impact of Adjustment		As Reported			As Originally Reported			Impact of Adjustment		As Adjusted
Net properties	$	37,531		$	(230)	$	37,301		$	37,428		$	(226)	$	37,202
Total assets	$	42,942		$	(230)	$	42,712		$	42,410		$	(226)	$	42,184
Deferred income taxes	$	11,204		$	(88)	$	11,116		$	11,130		$	(86)	$	11,044
Total liabilities	$	25,587		$	(88)	$	25,499		$	25,469		$	(86)	$	25,383
Retained earnings	$	15,548		$	(142)	$	15,406		$	15,167		$	(140)	$	15,027
Total common shareholders’ equity	$	17,355		$	(142)	$	17,213		$	16,941		$	(140)	$	16,801
Total liabilities & common shareholders’ equity	$	42,942		$	(230)	$	42,712		$	42,410		$	(226)	$	42,184
Condensed Consolidated Statements of Cash Flows
	For the Three Months Ended March 31, 2010								For the Three Months Ended March 31, 2009
Millions	Computed under Prior Method			Impact of Adjustment		As Reported			As Originally Reported			Impact of Adjustment		As Adjusted
Net income	$	518		$	(2)	$	516		$	362		$	-	$	362
Depreciation	$	371		$	(4)	$	367		$	345		$	(4)	$	341
Deferred income taxes & unrecognized tax benefits	$	56		$	(2)	$	54		$	20		$	(1)	$	19
Cash provided by operating activities	$	664		$	(8)	$	656		$	723		$	(5)	$	718
Capital investments	$	(469	)	$	8	$	(461	)	$	(526	)	$	5	$	(521)
Cash used in investing activities	$	(503	)	$	8	$	(495	)	$	(633	)	$	5	$	(628)

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4. Operations and Segmentation – The Railroad, along with its subsidiaries and rail affiliates, is our one reportable operating segment. Although revenue is analyzed by commodity group, we analyze the net financial results of the Railroad as one segment due to the integrated nature of our rail network. The following table provides freight revenue by commodity group:

Millions, for the Three Months Ended March 31,	2010		2009
Agricultural	$	730	$	661
Automotive		305		162
Chemicals		587		513
Energy		844		807
Industrial Products		598		546
Intermodal		691		551
Total freight revenues	$	3,755	$	3,240
Other revenues		210		175
Total operating revenues	$	3,965	$	3,415

Although our revenues are principally derived from customers domiciled in the United States, the ultimate points of origination or destination for some products transported are outside the United States.

5. Stock-Based Compensation – We have several stock-based compensation plans under which employees and non-employee directors receive stock options, nonvested retention shares, and nonvested stock units. We refer to the nonvested shares and stock units collectively as “retention awards”. We have elected to issue treasury shares to cover option exercises and stock unit vestings, while new shares are issued when retention shares vest. Information regarding stock-based compensation appears in the table below:

Millions, for the Three Months Ended March 31,	2010		2009
Stock-based compensation, before tax:
Stock options	$	4	$	4
Retention awards		13		8
Total stock-based compensation, before tax	$	17	$	12
Total stock-based compensation, after tax	$	11	$	8
Excess tax benefits from equity compensation plans	$	9	$	2

Stock Options – We estimate the fair value of our stock option awards using the Black-Scholes option pricing model. Groups of employees and non-employee directors that have similar historical and expected exercise behavior are considered separately for valuation purposes. The table below shows the year-to-date weighted-average assumptions used for valuation purposes:

Weighted-Average Assumptions, for the Three Months Ended March 31,	2010	2009
Risk-free interest rate	2.4%	1.9%
Dividend yield	1.8%	2.3%
Expected life (years)	5.4	5.1
Volatility	35.2%	31.3%
Weighted-average grant-date fair value of options granted	$18.26	$11.33

The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant; the dividend yield is calculated as the ratio of dividends paid per share of common stock to the stock price on the date of grant; the expected life is based on historical and expected exercise behavior; and volatility is based on the historical volatility of our stock price over the expected life of the option.

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A summary of stock option activity during the three months ended March 31, 2010 is presented below:

	Shares (thous.)		Weighted- Average Exercise Price	Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value (millions)
Outstanding at January 1, 2010	12,699		$        42.27	5.5 yrs.	$        275
Granted	788		60.98
Exercised	(559	)	35.42	N/A	N/A
Forfeited or expired	(11	)	53.61	N/A	N/A
Outstanding at March 31, 2010	12,917		$        43.70	5.6 yrs.	$        383
Vested or expected to vest at March 31, 2010	12,841		$        43.60	5.6 yrs.	$        382
Options exercisable at March 31, 2010	10,404		$        41.04	4.8 yrs.	$        336

Stock options are granted at the closing price on the date of grant, have ten-year contractual terms, and vest no later than three years from the date of grant. None of the stock options outstanding at March 31, 2010 are subject to performance or market-based vesting conditions.

At March 31, 2010, there was $32 million of unrecognized compensation expense related to nonvested stock options, which is expected to be recognized over a weighted-average period of 1.7 years. Additional information regarding stock option exercises appears in the table below:

Millions, for the Three Months Ended March 31,	2010		2009
Intrinsic value of stock options exercised	$	18	$	1
Cash received from option exercises		23		-
Treasury shares repurchased for employee payroll taxes		(6)		-
Tax benefit realized from option exercises		7		-
Aggregate grant-date fair value of stock options vested		19		29

Retention Awards – The fair value of retention awards is based on the closing price of the stock on the grant date. Dividends and dividend equivalents are paid to participants during the vesting periods.

Changes in our retention awards during the three months ended March 31, 2010 were as follows:

	Shares (thous.)	Weighted-Average Grant-Date Fair Value
Nonvested at January 1, 2010	2,719	$        50.13
Granted	597	60.98
Vested	(558)	43.08
Forfeited	(13)	53.22
Nonvested at March 31, 2010	2,745	$        53.91

Retention awards are granted at no cost to the employee or non-employee director and vest over periods lasting up to four years. At March 31, 2010, there was $91 million of total unrecognized compensation expense related to nonvested retention awards, which is expected to be recognized over a weighted-average period of 2.4 years.

Performance Retention Awards – In February 2010, our Board of Directors approved performance stock unit grants. Other than different performance targets, the basic terms of these performance stock units are identical to those granted in January 2008 and February 2009, including using annual return on invested capital (ROIC) as the performance measure. Additionally, a change was made in February 2009 to an underlying assumption used in connection with calculating a component of ROIC. As a result, a lower discount rate (an assumed interest rate) will be used in both the numerator and denominator when calculating the present value of our future operating lease payments to reflect changes to interest rates and our financing costs. This rate will be consistent with the methodology used to calculate our adjusted

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debt-to-capital ratio. We used this new discount rate to calculate ROIC in connection with determining awards of performance stock units granted in 2009 and 2010. For performance stock units granted in 2008, we will continue calculating ROIC with the methodology and assumptions in effect when the performance stock units were granted.

Stock units awarded to selected employees under these grants are subject to continued employment for 37 months and the attainment of certain levels of ROIC. We expense the fair value of the units that are probable of being earned based on our forecasted ROIC over the 3-year performance period. We measure the fair value of these performance stock units based upon the closing price of the underlying common stock as of the date of grant, reduced by the present value of estimated future dividends. Dividend equivalents are paid to participants only after the units are earned.

The assumptions used to calculate the present value of estimated future dividends related to the February 2010 grant were as follows:

For the Three Months Ended March 31,	2010
Dividend per share per quarter	$	0.27
Risk-free interest rate at date of grant		2.4%

Changes in our performance retention awards during the three months ended March 31, 2010 were as follows:

	Shares (thous.)	Weighted-Average Grant-Date Fair Value
Nonvested at January 1, 2010	1,060	$        50.88
Granted	473	60.98
Vested	(215)	46.92
Forfeited	(99)	47.36
Nonvested at March 31, 2010	1,219	$        55.78

At March 31, 2010, there was $45 million of total unrecognized compensation expense related to nonvested performance retention awards, which is expected to be recognized over a weighted-average period of 2.0 years. This expense is subject to achievement of the ROIC levels established for the performance stock unit grants.

6. Retirement Plans

Pension and Other Postretirement Benefits

Pension Plans – We provide defined benefit retirement income to eligible non-union employees through qualified and non-qualified (supplemental) pension plans. Qualified and non-qualified pension benefits are based on years of service and the highest compensation during the latest years of employment, with specific reductions made for early retirements.

Other Postretirement Benefits (OPEB) – We provide defined contribution medical and life insurance benefits for eligible retirees. These benefits are funded as medical claims and life insurance premiums are paid.

Expense

Both pension and OPEB expense are determined based upon the annual service cost of benefits (the actuarial cost of benefits earned during a period) and the interest cost on those liabilities, less the expected return on plan assets. The expected long-term rate of return on plan assets is applied to a calculated value of plan assets that recognizes changes in fair value over a five-year period. This practice is intended to reduce year-to-year volatility in pension expense, but it can have the effect of delaying the recognition of differences between actual returns on assets and expected returns based on long-term rate of return assumptions. Differences in actual experience in relation to assumptions are not recognized in net income immediately, but are deferred and, if necessary, amortized as pension or OPEB expense.

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The components of our net periodic pension and OPEB cost/(benefit) were as follows for the three months ended March 31:

	Pension				OPEB
Millions	2010		2009		2010		2009
Service cost	$	11	$	10	$	1	$	1
Interest cost		35		34		4		6
Expected return on plan assets		(45)		(40)		-		-
Amortization of:
Prior service cost/(credit)		1		2		(11)		(9)
Actuarial loss		11		6		3		4
Net periodic benefit cost/(benefit)	$	13	$	12	$	(3)	$	2

Cash Contributions

For the three months ended March 31, 2010, we have made no cash contributions to the qualified pension plan. Any additional contributions made during 2010 will be based on cash generated from operations and financial market considerations.

7. Other Income – Other income included the following:

Millions, for the Three Months Ended March 31,	2010		2009
Rental income	$	20	$	20
Net gain on non-operating asset dispositions		4		6
Interest income		1		2
Receivable securitization fees [a]		-		(3)
Early extinguishment of debt		(16)		-
Non-operating environmental costs and other		(8)		(2)
Total	$	1	$	23

[a] Receivable securitization fees totaling $2 million for the first quarter of 2010 are now classified as interest expense. See Note 2 and Note 14 for further discussion.

8. Income Taxes – Internal Revenue Service (IRS) examinations have been completed and settled for all years prior to 1999, and the statute of limitations bars any additional tax assessments. Some interest calculations remain open back to 1986. The IRS has completed its examinations and issued notices of deficiency for tax years 1999 through 2006. We disagree with many of their proposed adjustments, and we are at IRS Appeals for these years. The IRS is examining our federal income tax returns for 2007 and 2008. Additionally, some of our state income tax returns for 2003-2006 are under examination.

At March 31, 2010, our liability for unrecognized tax benefits was $61 million, of which we classified $4 million as current.

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9. Earnings Per Share

The following table provides a reconciliation between basic and diluted earnings per share:

Millions, Except Per Share Amounts, for the Three Months Ended March 31,	2010		2009
			(Adjusted)*
Net income	$	516	$	362
Weighted-average number of shares outstanding:
Basic		504.5		502.7
Dilutive effect of stock options		3.0		1.0
Dilutive effect of retention shares and units		1.2		0.9
Diluted		508.7		504.6
Earnings per share – basic	$	1.02	$	0.72
Earnings per share – diluted	$	1.01	$	0.72
Stock options excluded as their inclusion would be antidilutive		0.5		7.1

* Certain amounts have been adjusted for the retrospective change in accounting principle for rail grinding (See Note 3).

10. Comprehensive Income/(Loss) – Comprehensive income/(loss) was as follows:

Millions, for the Three Months Ended March 31,	2010		2009
			(Adjusted)*
Net income	$	516	$	362
Other comprehensive income/(loss):
Defined benefit plans		3		(13)
Foreign currency translation		2		(13)
Derivatives		1		-
Total other comprehensive income/(loss) [a]		6		(26)
Total comprehensive income	$	522	$	336

* Certain amounts have been adjusted for the retrospective change in accounting principle for rail grinding (See Note 3).

[a] Net of deferred taxes of $1 million and $9 million during the three months ended March 31, 2010 and 2009, respectively.

The after-tax components of accumulated other comprehensive loss were as follows:

Millions	Mar. 31, 2010		Dec. 31, 009
Defined benefit plans	$	(612)	$	(615)
Foreign currency translation		(33)		(35)
Derivatives		(3)		(4)
Total	$	(648)	$	(654)

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11. Properties

The following table lists the major categories of property and equipment, as well as the average composite depreciation rate for each category:

Millions, Except Percentages As of March 31, 2010	Cost		Accumulated Depreciation	Net Book Value		Depreciation Rate for 2010
Land	$	4,900	$       N/A	$	4,900	N/A
Road:
Rail and other track material [a]		11,669	4,445		7,224	3.0%
Ties		7,347	1,799		5,548	2.8%
Ballast		3,882	888		2,994	3.0%
Other [b]		13,005	2,250		10,755	2.5%
Total road		35,903	9,382		26,521	2.8%
Equipment:
Locomotives		6,150	2,541		3,609	5.6%
Freight cars		1,861	1,010		851	3.6%
Work equipment and other		169	34		135	4.4%
Total equipment		8,180	3,585		4,595	5.1%
Technology and other		527	204		323	13.0%
Construction in progress		962	-		962	N/A
Total	$	50,472	$  13,171	$	37,301	N/A
Millions, Except Percentages As of December 31, 2009 (Adjusted)*	Cost		Accumulated Depreciation	Net Book Value		Depreciation Rate for 2009
Land	$	4,891	$       N/A	$	4,891	N/A
Road:
Rail and other track material [a]		11,584	4,414		7,170	3.6%
Ties		7,254	1,767		5,487	2.7%
Ballast		3,841	869		2,972	2.9%
Other [b]		12,988	2,237		10,751	2.4%
Total road		35,667	9,287		26,380	2.9%
Equipment:
Locomotives		6,156	2,470		3,686	5.0%
Freight cars		1,885	1,015		870	4.2%
Work equipment and other		168	32		136	3.6%
Total equipment		8,209	3,517		4,692	4.8%
Technology and other		477	204		273	12.5%
Construction in progress		966	-		966	N/A
Total	$	50,210	$  13,008	$	37,202	N/A

* Certain amounts have been adjusted for the retrospective change in accounting principle for rail grinding (See Note 3).

[a] Depreciation rate includes a weighted-average composite rate for rail in high-density traffic corridors.

[b] Other includes grading, bridges and tunnels, signals, buildings, and other road assets.

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12. Accounts Payable and Other Current Liabilities

Millions	Mar. 31, 2010		Dec. 31, 2009
Accounts payable	$	685	$	612
Income and other taxes		447		224
Accrued casualty costs		373		379
Accrued wages and vacation		346		339
Dividends and interest		285		347
Equipment rents payable		88		89
Other		446		480
Total accounts payable and other current liabilities	$	2,670	$	2,470

13. Financial Instruments

Strategy and Risk – We may use derivative financial instruments in limited instances for other than trading purposes to assist in managing our overall exposure to fluctuations in interest rates and fuel prices. We are not a party to leveraged derivatives and, by policy, do not use derivative financial instruments for speculative purposes. Derivative financial instruments qualifying for hedge accounting must maintain a specified level of effectiveness between the hedging instrument and the item being hedged, both at inception and throughout the hedged period. We formally document the nature and relationships between the hedging instruments and hedged items at inception, as well as our risk-management objectives, strategies for undertaking the various hedge transactions, and method of assessing hedge effectiveness. Changes in the fair market value of derivative financial instruments that do not qualify for hedge accounting are charged to earnings. We may use swaps, collars, futures, and/or forward contracts to mitigate the risk of adverse movements in interest rates and fuel prices; however, the use of these derivative financial instruments may limit future benefits from favorable price movements.

Market and Credit Risk – We address market risk related to derivative financial instruments by selecting instruments with value fluctuations that highly correlate with the underlying hedged item. We manage credit risk related to derivative financial instruments, which is minimal, by requiring high credit standards for counterparties and periodic settlements. At March 31, 2010 and December 31, 2009, we were not required to provide collateral, nor had we received collateral, relating to our hedging activities.

Determination of Fair Value – We determine the fair values of our derivative financial instrument positions based upon current fair values as quoted by recognized dealers or the present value of expected future cash flows.

Interest Rate Fair Value Hedges – We manage our overall exposure to fluctuations in interest rates by adjusting the proportion of fixed and floating rate debt instruments within our debt portfolio over a given period. We generally manage the mix of fixed and floating rate debt through the issuance of targeted amounts of each as debt matures or as we require incremental borrowings. We employ derivatives, primarily swaps, as one of the tools to obtain the targeted mix. In addition, we also obtain flexibility in managing interest costs and the interest rate mix within our debt portfolio by evaluating the issuance of and managing outstanding callable fixed-rate debt securities.

Swaps allow us to convert debt from fixed rates to variable rates and thereby hedge the risk of changes in the debt’s fair value attributable to the changes in interest rates. We account for swaps as fair value hedges using the short-cut method; therefore, we do not record any ineffectiveness within our Condensed Consolidated Financial Statements.

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The following is a summary of our interest rate derivatives qualifying as fair value hedges:

Millions, Except Percentages	Mar. 31, 2010		Dec. 31, 2009
Amount of debt hedged	$	-	$	250
Percentage of total debt portfolio		-		3%
Gross fair value asset position	$	-	$	15

On February 25, 2010, we elected to terminate an interest rate swap agreement with a notional amount of $250 million prior to the scheduled maturity and received cash of $20 million (which is comprised of $16 million for the fair value of the swap that was terminated and $4 million of accrued but unpaid interest receivable). We designated the swap agreement as a fair value hedge, and as such the unamortized adjustment to debt for the change in fair value of the swap remains classified as debt due after one year in our Condensed Consolidated Statements of Financial Position and will be amortized to interest expense through April 15, 2012. As of March 31, 2010, we do not have any interest rate fair value hedges outstanding.

Interest Rate Cash Flow Hedges – We report changes in the fair value of cash flow hedges in accumulated other comprehensive loss until the hedged item affects earnings. At March 31, 2010 and December 31, 2009, we had reductions of $3 million recorded as an accumulated other comprehensive loss that is being amortized on a straight-line basis through September 30, 2014. As of March 31, 2010 and December 31, 2009, we had no interest rate cash flow hedges outstanding.

Earnings Impact – Our use of derivative financial instruments had the following impact on pre-tax income for the three months ended:

Millions	Mar. 31, 2010		Mar. 31, 2009
Decrease in interest expense from interest rate hedging	$	2	$	2
Increase in pre-tax income	$	2	$	2

14. Debt

Credit Facilities – On March 31, 2010, we had $1.9 billion of credit available under our revolving credit facility (the facility). The facility is designated for general corporate purposes and supports the issuance of commercial paper. We did not draw on the facility during the three months ended March 31, 2010. Commitment fees and interest rates payable under the facility are similar to fees and rates available to comparably rated, investment-grade borrowers. The facility allows for borrowings at floating rates based on London Interbank Offered Rates, plus a spread, depending upon our senior unsecured debt ratings. The facility requires Union Pacific Corporation to maintain a debt-to-net-worth coverage ratio as a condition to making a borrowing. At March 31, 2010 and December 31, 2009 (and at all times during the first quarter), we were in compliance with this covenant.

The definition of debt used for purposes of calculating the debt-to-net-worth coverage ratio includes, among other things, certain credit arrangements, capital leases, guarantees and unfunded and vested pension benefits under Title IV of ERISA. At March 31, 2010, the debt-to-net-worth coverage ratio allowed us to carry up to $34.4 billion of debt (as defined in the facility), and we had $10.3 billion of debt (as defined in the facility) outstanding at that date. Under our current capital plans, we expect to continue to satisfy the debt-to-net-worth coverage ratio; however, many factors beyond our reasonable control could affect our ability to comply with this provision in the future. The facility does not include any other financial restrictions, credit rating triggers (other than rating-dependent pricing), or any other provision that could require us to post collateral. The facility also includes a $75 million cross-default provision and a change-of-control provision. The term of the facility will expire in April 2012, and we currently intend to replace the facility with a substantially similar credit agreement on or before the expiration date, which is consistent with our past practices with respect to our credit facilities.

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At March 31, 2010, we had no commercial paper outstanding. Outstanding commercial paper balances are supported by our revolving credit facility but do not reduce the amount of borrowings available under the facility. During the three months ended March 31, 2010, we did not issue or repay any commercial paper.

Receivables Securitization Facility – As discussed in Note 2, we adopted new accounting guidance on January 1, 2010. As a result, we no longer account for the value of the outstanding undivided interest held by investors under our receivables securitization facility as a sale. In addition, transfers of receivables occurring on or after January 1, 2010 are reflected as debt issued in our Condensed Consolidated Statements of Cash Flows, and the value of the outstanding undivided interest held by investors at March 31, 2010 is accounted for as a secured borrowing and is included in our Condensed Consolidated Statements of Financial Position as debt due after one year.

Under the receivables securitization facility, the Railroad sells most of its accounts receivable to Union Pacific Receivables, Inc. (UPRI), a bankruptcy-remote subsidiary. UPRI may subsequently transfer, without recourse on a 364-day revolving basis, an undivided interest in eligible accounts receivable to investors. The total capacity to transfer undivided interests to investors under the facility was $600 million at March 31, 2010 and December 31, 2009, respectively. The value of the outstanding undivided interest held by investors under the facility was $100 million and $400 million at March 31, 2010 and December 31, 2009, respectively. The value of the undivided interest held by investors was supported by $1,006 million and $817 million of accounts receivable at March 31, 2010 and December 31, 2009, respectively. At March 31, 2010 and December 31, 2009, the value of the interest retained by UPRI was $1,006 million and $417 million, respectively. This retained interest is included in accounts receivable, net in our Condensed Consolidated Statements of Financial Position.

The value of the outstanding undivided interest held by investors could fluctuate based upon the availability of eligible receivables and is directly affected by changing business volumes and credit risks, including default and dilution. If default or dilution ratios increase one percent, the value of the outstanding undivided interest held by investors would not change as of March 31, 2010. Should our credit rating fall below investment grade, the value of the outstanding undivided interest held by investors would be reduced, and, in certain cases, the investors would have the right to discontinue the facility.

The Railroad services the sold receivables; however, the Railroad does not recognize any servicing asset or liability as the servicing fees adequately compensate the Railroad for these responsibilities. The Railroad collected approximately $3.7 billion and $3.5 billion during the three months ended March 31, 2010 and 2009, respectively. UPRI used certain of these proceeds to purchase new receivables under the facility.

The costs of the receivables securitization facility include interest, which will vary based on prevailing commercial paper rates, program fees paid to banks, commercial paper issuing costs, and fees for unused commitment availability. The costs of the receivables securitization facility are included in interest expense and were $2 million for the three months ended March 31, 2010. Prior to adoption of the new accounting guidance, the costs of the receivables securitization facility were included in other income and were $3 million for the three months ended March 31, 2009.

The investors have no recourse to the Railroad’s other assets except for customary warranty and indemnity claims. Creditors of the Railroad do not have recourse to the assets of UPRI.

Shelf Registration Statement and Significant New Borrowings – We filed a new shelf registration statement, which became effective February 10, 2010. Our Board of Directors authorized the issuance of up to $3 billion of debt securities, replacing the $2.25 billion of authority remaining under our shelf registration filed in March 2007. Under the shelf registration, we may issue, from time to time, any combination of debt securities, preferred stock, common stock, or warrants for debt securities or preferred stock in one or more offerings. We have no immediate plans to issue equity securities; however, we will continue to explore opportunities to replace existing debt or access capital through issuances of debt securities under our shelf registration, and, therefore, we may issue additional debt securities at any time.

As of March 31, 2010, and December 31, 2009, we reclassified as long-term debt approximately $830 million and $320 million, respectively, of debt due within one year that we intend to refinance. This

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reclassification reflects our ability and intent to refinance any short-term borrowings and certain current maturities of long-term debt on a long-term basis.

Debt Redemption – On March 22, 2010, we redeemed $175 million of our 6.5% notes due April 15, 2012. The redemption resulted in an early extinguishment charge of $16 million in the first quarter of 2010. In addition, we reduced the amount of the outstanding undivided interest under our receivables securitization facility from $400 million to $100 million during the first quarter of 2010.

Fair Value of Debt Instruments – The fair value of our short- and long-term debt was estimated using quoted market prices, where available, or current borrowing rates. At March 31, 2010, the fair value of total debt was $10.6 billion, approximately $906 million more than the carrying value. At December 31, 2009, the fair value of total debt was $10.8 billion, approximately $945 million more than the carrying value. At March 31, 2010 and December 31, 2009, approximately $320 million of fixed-rate debt securities contained call provisions that allowed us to retire the debt instruments prior to final maturity, with the payment of fixed call premiums, or in certain cases, at par.

15. Commitments and Contingencies

Asserted and Unasserted Claims – Various claims and lawsuits are pending against us and certain of our subsidiaries. We cannot fully determine the effect of all asserted and unasserted claims on our consolidated results of operations, financial condition, or liquidity; however, to the extent possible, where asserted and unasserted claims are considered probable and where such claims can be reasonably estimated, we have recorded a liability. We do not expect that any known lawsuits, claims, environmental costs, commitments, contingent liabilities, or guarantees will have a material adverse effect on our consolidated results of operations, financial condition, or liquidity after taking into account liabilities and insurance recoveries previously recorded for these matters.

Personal Injury – The cost of personal injuries to employees and others related to our activities is charged to expense based on estimates of the ultimate cost and number of incidents each year. We use third-party actuaries to assist us in measuring the expense and liability, including unasserted claims. The Federal Employers’ Liability Act (FELA) governs compensation for work-related accidents. Under FELA, damages are assessed based on a finding of fault through litigation or out-of-court settlements. We offer a comprehensive variety of services and rehabilitation programs for employees who are injured at work.

Our personal injury liability is discounted to present value using applicable U.S. Treasury rates. Approximately 87% of the recorded liability related to asserted claims, and approximately 13% related to unasserted claims at March 31, 2010. Estimates can vary over time due to evolving trends in litigation.

Our personal injury liability activity was as follows:

Millions, for the Three Months Ended March 31,	2010			2009
Beginning balance	$	545		$	621
Accruals		30			54
Payments		(42	)		(40	)
Ending balance at March 31	$	533		$	635
Current portion, ending balance at March 31	$	158		$	186

Asbestos – We are a defendant in a number of lawsuits in which current and former employees and other parties allege exposure to asbestos. Additionally, we have received claims for asbestos exposure that have not been litigated. The claims and lawsuits (collectively referred to as “claims”) allege occupational illness resulting from exposure to asbestos-containing products. In most cases, the claimants do not have credible medical evidence of physical impairment resulting from the alleged exposures. Additionally, most claims filed against us do not specify an amount of alleged damages.

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Our asbestos-related liability activity was as follows:

Millions, for the Three Months Ended March 31,	2010		2009
Beginning balance	$	174	$	213
Accruals		-		-
Payments		(5)		(3)
Ending balance at March 31	$	169	$	210
Current portion, ending balance at March 31	$	13	$	12

We have insurance coverage for a portion of the costs incurred to resolve asbestos-related claims, and we have recognized an asset for estimated insurance recoveries at March 31, 2010, and December 31, 2009.

We believe that our estimates of liability for asbestos-related claims and insurance recoveries are reasonable and probable. The amounts recorded for asbestos-related liabilities and related insurance recoveries were based on currently known facts. However, future events, such as the number of new claims to be filed each year, average settlement costs, and insurance coverage issues, could cause the actual costs and insurance recoveries to be higher or lower than the projected amounts. Estimates also may vary in the future if strategies, activities, and outcomes of asbestos litigation materially change; federal and state laws governing asbestos litigation increase or decrease the probability or amount of compensation of claimants; and there are material changes with respect to payments made to claimants by other defendants.

Environmental Costs – We are subject to federal, state, and local environmental laws and regulations. We identified 301 sites at which we are or may be liable for remediation costs associated with alleged contamination or for violations of environmental requirements. This includes 31 sites that are the subject of actions taken by the U.S. government, 17 of which are currently on the Superfund National Priorities List. Certain federal legislation imposes joint and several liability for the remediation of identified sites; consequently, our ultimate environmental liability may include costs relating to activities of other parties, in addition to costs relating to our own activities at each site.

When an environmental issue has been identified with respect to property owned, leased, or otherwise used in our business, we and our consultants perform environmental assessments on the property. We expense the cost of the assessments as incurred. We accrue the cost of remediation where our obligation is probable and such costs can be reasonably estimated. We do not discount our environmental liabilities when the timing of the anticipated cash payments is not fixed or readily determinable. At March 31, 2010, approximately 12% of our environmental liability was discounted at 3.69%, while approximately 12% of our environmental liability was discounted at 3.4% at December 31, 2009.

Our environmental liability activity was as follows:

Millions, for the Three Months Ended March 31,	2010		2009
Beginning balance	$	217	$	209
Accruals		13		3
Payments		(8)		(14)
Ending balance at March 31	$	222	$	198
Current portion, ending balance at March 31	$	82	$	58

The environmental liability includes future costs for remediation and restoration of sites, as well as ongoing monitoring costs, but excludes any anticipated recoveries from third parties. Cost estimates are based on information available for each site, financial viability of other potentially responsible parties, and existing technology, laws, and regulations. The ultimate liability for remediation is difficult to determine because of the number of potentially responsible parties, site-specific cost sharing arrangements with other potentially responsible parties, the degree of contamination by various wastes, the scarcity and

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quality of volumetric data related to many of the sites, and the speculative nature of remediation costs. Estimates of liability may vary over time due to changes in federal, state, and local laws governing environmental remediation. Current obligations are not expected to have a material adverse effect on our consolidated results of operations, financial condition, or liquidity.

Guarantees – At March 31, 2010, we were contingently liable for $392 million in guarantees. We have recorded a liability of $3 million for the fair value of these obligations as of March 31, 2010, and December 31, 2009. We entered into these contingent guarantees in the normal course of business, and they include guaranteed obligations related to our headquarters building, equipment financings, and affiliated operations. The final guarantee expires in 2022. We are not aware of any existing event of default that would require us to satisfy these guarantees. We do not expect that these guarantees will have a material adverse effect on our consolidated financial condition, results of operations, or liquidity.

Indemnities – Our maximum potential exposure under indemnification arrangements, including certain tax indemnifications, can range from a specified dollar amount to an unlimited amount, depending on the nature of the transactions and the agreements. Due to uncertainty as to whether claims will be made or how they will be resolved, we cannot reasonably determine the probability of an adverse claim or reasonably estimate any adverse liability or the total maximum exposure under these indemnification arrangements. We do not have any reason to believe that we will be required to make any material payments under these indemnity provisions.

16. Share Repurchase Program – On May 1, 2008, our Board of Directors authorized the repurchase of 40 million common shares by March 31, 2011. Management’s assessments of market conditions and other pertinent facts guide the timing and volume of all repurchases. If we elect to make repurchases of our common stock under this program in 2010, we expect to fund such repurchases through cash generated from operations, the sale or lease of various operating and non-operating properties, debt issuances, and cash on hand. During the three months ended March 31, 2010 and 2009, we did not repurchase shares under this program. Repurchased shares are recorded in treasury stock at cost, which includes any applicable commissions and fees.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

UNION PACIFIC CORPORATION AND SUBSIDIARY COMPANIES

RESULTS OF OPERATIONS

Three Months Ended March 31, 2010 Compared to

Three Months Ended March 31, 2009

For purposes of this report, unless the context otherwise requires, all references herein to “UPC”, “Corporation”, “we”, “us”, and “our” shall mean Union Pacific Corporation and its subsidiaries, including Union Pacific Railroad Company, which we separately refer to as “UPRR” or the “Railroad”.

The following discussion should be read in conjunction with the Condensed Consolidated Financial Statements and applicable notes to the Condensed Consolidated Financial Statements, Item 1, and other information included in this report. Our Condensed Consolidated Financial Statements are unaudited and reflect all adjustments (consisting only of normal and recurring adjustments) that are, in the opinion of management, necessary for their fair presentation in conformity with accounting principles generally accepted in the United States of America (GAAP).

The Railroad, along with its subsidiaries and rail affiliates, is our one reportable business segment. Although revenue is analyzed by commodity, we analyze the net financial results of the Railroad as one segment due to the integrated nature of the rail network.

Available Information

Our Internet website is www.up.com. We make available free of charge on our website (under the “Investors” caption link) our Annual Reports on Form 10-K; our Quarterly Reports on Form 10-Q; eXtensible Business Reporting Language (XBRL) documents for our 2009 Annual Report on Form 10-K and our 2009 Quarterly Reports on Form 10-Q for the second and third quarters; our current reports on Form 8-K; our proxy statements; Forms 3, 4, and 5, filed on behalf of directors and executive officers; and amendments to such reports filed or furnished pursuant to the Securities Exchange Act of 1934, as amended (the Exchange Act), as soon as reasonably practicable after such material is electronically filed with, or furnished to, the Securities and Exchange Commission (SEC). We also make available on our website previously filed SEC reports and exhibits via a link to EDGAR on the SEC’s Internet site at www.sec.gov. Additionally, our corporate governance materials, including By-Laws, Board Committee charters, governance guidelines and policies, and codes of conduct and ethics for directors, officers, and employees are available on our website. From time to time, the corporate governance materials on our website may be updated as necessary to comply with rules issued by the SEC and the New York Stock Exchange or as desirable to promote the effective and efficient governance of our company. Any security holder wishing to receive, without charge, a copy of any of our SEC filings or corporate governance materials should send a written request to: Secretary, Union Pacific Corporation, 1400 Douglas Street, Omaha, NE 68179.

References to our website address in this report, including references in Management’s Discussion and Analysis of Financial Condition and Results of Operations, Item 2, are provided as a convenience and do not constitute, and should not be deemed, an incorporation by reference of the information contained on, or available through, the website. Therefore, such information should not be considered part of this report.

Critical Accounting Policies and Estimates

We base our discussion and analysis of our financial condition and results of operations upon our Condensed Consolidated Financial Statements. The preparation of these financial statements requires estimation and judgment that affect the reported amounts of revenues, expenses, assets, and liabilities. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. If these estimates differ materially from actual results, the impact on the Condensed Consolidated Financial Statements may be material. Our critical accounting policies are available in Item 7 of our 2009 Annual Report on Form 10-K. There have not been any significant changes with respect to these policies during the first three months of 2010.

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Change in Accounting Principle

Effective January 1, 2010, we changed our accounting policy for rail grinding costs from a capitalization method, under which we have capitalized the cost of rail grinding and depreciated such capitalized costs, to a direct expense method, under which we expense rail grinding costs as incurred. The expense as incurred method is preferable, as it eliminates the subjectivity in determining the period of benefit associated with rail grinding over which to depreciate the associated capitalized costs. This change was reflected as a change in accounting principle from an acceptable accounting principle to a preferable accounting principle (See Part II. Item 6. Exhibit 18). All prior period financial information presented herein has been adjusted to reflect the retrospective application of the change in our method of accounting for rail grinding costs, as more fully discussed in Item 1, Note 3 of our Condensed Consolidated Financial Statements.

RESULTS OF OPERATIONS

QUARTERLY SUMMARY

We reported earnings of $1.01 per diluted share on net income of $516 million in the first quarter of 2010 compared to earnings of $0.72 per diluted share on net income of $362 million for the first quarter of 2009. Freight revenues increased $515 million in the first quarter compared to the same period of 2009 driven by volume growth of 13%, higher fuel surcharges, and core pricing gains. Demand for our services increased compared to the first quarter of 2009, which was substantially impacted by the recessionary economy. Consistent with the prior year, we continued company-wide efforts to improve efficiency and reduce costs, in addition to adjusting our resources to reflect current demand levels. Although volume increased from levels in the first quarter of 2009, we leveraged this additional traffic with enhancements to our transportation plan, which improved asset utilization and minimized operational cost increases. As of March 31, 2010, we had 22% of our road locomotives and 14% of our freight car inventory in storage or maintained off-line, compared to 24% and 26%, respectively, at March 31, 2009. Additionally, these demand-driven resource adjustments and our productivity initiatives combined to reduce our workforce by 6%. These actions coupled with the volume growth and improved pricing also drove the higher earnings in the first quarter of 2010 versus 2009.

As reported to the Association of American Railroads (AAR), average train speed decreased 4% and average terminal dwell time increased 7% during the first quarter of 2010 compared to 2009. Additionally, average rail car inventory decreased 3% due to better freight car utilization and cycle times. The decrease in train speed and increased terminal dwell resulted primarily from severe winter weather and track maintenance and improvement programs. Overall, we continued operating a fluid and efficient network in the first quarter of 2010.

Operating Revenues

Millions, for the Three Months Ended March 31,	2010		2009		% Change
Freight revenues	$	3,755	$	3,240	16%
Other revenues		210		175	20
Total	$	3,965	$	3,415	16%

Freight revenues are revenues generated by transporting freight or other materials from our six commodity groups. Freight revenues vary with volume (carloads) and average revenue per car (ARC). Changes in price, traffic mix, and fuel surcharges drive ARC. We provide some of our customers with contractual incentives for meeting or exceeding specified cumulative volumes or shipping to and from specific locations, which we record as a reduction to freight revenues based on the actual or projected future shipments. We recognize freight revenues on a percentage-of-completion basis as freight moves from origin to destination. We allocate freight revenues between reporting periods based on the relative transit time in each reporting period and recognize expenses as we incur them.

Other revenues include revenues earned by our subsidiaries, revenues from our commuter rail operations, and accessorial revenues, which we earn when customers retain equipment owned or

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controlled by us or when we perform additional services such as switching or storage. We recognize other revenues as we perform services or meet contractual obligations.

Freight revenues for all six commodity groups increased during the first quarter of 2010 as a result of economic improvements in certain market sectors. Volume levels increased for five of the six commodity groups, with particularly strong growth in automotive and intermodal shipments. Energy shipments declined compared to the first quarter of 2009. Higher fuel surcharges due to higher fuel prices and volume growth also increased freight revenues in the first quarter 2010 compared to 2009. ARC increased 3% during the period driven by core pricing gains and higher fuel cost recoveries. Fuel cost recoveries include fuel surcharge revenue and the impact of resetting the base fuel price for certain traffic, which is described below in more detail.

Our fuel surcharge programs (excluding index-based contract escalators that contain some provision for fuel) generated $256 million in freight revenues in the first quarter of 2010. Increases in both fuel prices and volume levels drove the higher fuel surcharge amounts in the period. Additionally, fuel surcharge revenue is not entirely comparable to prior periods due to implementation of new mileage-based fuel surcharge programs. In April 2007, we converted regulated traffic, which represents approximately 20% of our current revenue base, to mileage-based fuel surcharge programs. In addition, we continue to convert portions of our non-regulated traffic to mileage-based fuel surcharge programs. At the time of introduction, we also reset the base fuel price at which the new mileage-based fuel surcharges take effect. Resetting the fuel price at which the fuel surcharge begins, in conjunction with rebasing the affected transportation rates to include a portion of what had been in the fuel surcharge, did not materially change our freight revenue as higher base rates offset lower fuel surcharge revenue.

The following tables summarize the year-over-year changes in freight revenues, revenue carloads, and ARC by commodity type:

Freight Revenues
Millions,					%
for the Three Months Ended March 31,		2010		2009	Change
Agricultural	$	730	$	661	10%
Automotive		305		162	88
Chemicals		587		513	14
Energy		844		807	5
Industrial Products		598		546	10
Intermodal		691		551	25
Total	$	3,755	$	3,240	16%
Revenue Carloads
Thousands,					%
for the Three Months Ended March 31,		2010		2009	Change
Agricultural		228		212	8%
Automotive		151		97	56
Chemicals		203		180	13
Energy		516		521	(1)
Industrial Products		242		222	9
Intermodal		742		615	21
Total		2,082		1,847	13%

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Average Revenue per Car					%
for the Three Months Ended March 31,		2010		2009	Change
Agricultural	$	3,202	$	3,116	3%
Automotive		2,022		1,675	21
Chemicals		2,893		2,843	2
Energy		1,636		1,550	6
Industrial Products		2,474		2,459	1
Intermodal		930		897	4
Average	$	1,804	$	1,755	3%

Agricultural Products – Higher volume, fuel surcharges, and price improvements increased agricultural freight revenue in the first quarter of 2010 versus 2009. Stronger export demand in the Gulf region increased shipments of wheat and food grains compared to weak demand in the first quarter of 2009. In addition, increased demand in export markets in the Pacific Northwest and conversions from truck to rail for Midwest processor shipments drove a 6% increase in corn and feed grain shipments. Continued growth in ethanol shipments and new business in feed and animal protein shipments also increased agricultural shipments in the first quarter of 2010 compared to 2009.

Automotive – A 67% and 42% increase in shipments of finished vehicles and auto parts, respectively, combined with core pricing gains and fuel surcharges drove higher freight revenue in the first quarter of 2010 compared to 2009. Economic conditions in the first quarter of 2009 led to poor sales and reduced vehicle production, which in turn reduced shipments of finished vehicles and parts during the period.

Chemicals – Higher volume levels, price improvements, and fuel surcharges increased freight revenue from chemicals in the first quarter of 2010 versus 2009. Reduced inventories and delayed purchases from 2009 drove a 39% increase in fertilizer shipments during the quarter. A modest rebound in market conditions and more normalized inventory levels positively impacted shipments of industrial chemicals in the first quarter of 2010 compared to 2009, driving volume levels up 14%.

Energy – Core pricing gains and higher fuel surcharges increased freight revenue from energy shipments in the first quarter of 2010 versus 2009. Lower volume partially offset these increases. Shipments from the Colorado and Utah mines were down 5% as reduced traffic to eastern markets more than offset increased shipments to Mexico and the West Coast. Conversely, shipments from the Southern Powder River Basin of Wyoming were up 1% in the first quarter of 2010 compared to 2009 as severe winter weather and modest improvement in economic conditions increased energy demand. High inventory levels carried over from 2009 partially offset these increases.

Industrial Products – Volume gains, higher fuel surcharges, and core pricing improvement increased freight revenue from industrial products in the first quarter of 2010 versus 2009. A federal government remediation program involving removal of uranium mill tailings from the Moab, Utah area drove an increase in short-haul hazardous waste shipments in the first quarter of 2010 versus 2009. Shipments under this new program began in the second quarter of 2009. Steel shipments also increased due to improving economic conditions while shipments of non-metallic minerals (primarily frac sand) grew in response to heightened natural gas drilling activity.

Intermodal – Increased volumes and higher fuel surcharges drove the increase in freight revenue from intermodal shipments in the first quarter of 2010 versus 2009. Volume from domestic and international traffic increased 33% and 12% in the first quarter of 2010 compared to 2009, reflecting improvements in economic conditions. A new contract with Hub Group, Inc., which included additional shipments, was executed in the second quarter of 2009 and contributed to the increase in domestic shipments. In addition, improved service and competitive rates drove market share gains as shipments were converted from truck to rail. Increased import traffic due to inventory restocking and consumer demand generated growth in international shipments.

Mexico Business – Each of our commodity groups include revenue from shipments to and from Mexico. Revenue from Mexico business increased 33% to $364 million in the first quarter of 2010 versus 2009. Volume grew in all six commodity groups, up 31% in aggregate during the first quarter of 2010, with substantial increases in automotive, energy, and intermodal shipments.

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Operating Expenses

Millions,					%
for the Three Months Ended March 31,		2010		2009	Change
Compensation and benefits	$	1,059	$	1,070	(1)%
Fuel		583		386	51
Purchased services and materials		432		404	7
Depreciation		367		341	8
Equipment and other rents		290		317	(9)
Other		246		226	9
Total	$	2,977	$	2,744	8%

Operating expenses increased $233 million in the first quarter of 2010 versus 2009. Our fuel price per gallon rose 43% during the period, accounting for $171 million of the increase. Wage and benefit inflation, depreciation, and volume-related costs also drove higher expenses during the period. In addition, a one-time payment related to a transaction with CSX Intermodal, Inc. increased Other operating expenses during the quarter. Cost savings from productivity improvements and better resource utilization partially offset these increases.

Compensation and Benefits – Compensation and benefits include wages, payroll taxes, health and welfare costs, pension costs, other postretirement benefits, and incentive costs. Ongoing productivity initiatives led to a 6% decline in our workforce, saving $83 million in the first quarter of 2010 compared to 2009. Conversely, general wage and benefit inflation and volume-related expenses mostly offset these reductions in the first quarter.

Fuel – Fuel includes locomotive fuel and gasoline for highway and non-highway vehicles and heavy equipment. Higher diesel fuel prices, which averaged $2.16 per gallon (including taxes and transportation costs) in the first quarter of 2010 compared to $1.51 per gallon in the same period in 2009, increased expenses by $171 million. Volume, as measured by gross ton-miles, increased 9% in the first quarter versus 2009, driving expenses up by $31 million compared to 2009. Conversely, the use of newer, more fuel efficient locomotives, our fuel conservation programs, and efficient network operations drove a 4% improvement in our fuel consumption rate resulting in $14 million of cost savings.

Purchased Services and Materials – Purchased services and materials expense includes the costs of services purchased from outside contractors; materials used to maintain the Railroad’s lines, structures, and equipment; costs of operating facilities jointly used by UPRR and other railroads; transportation and lodging for train crew employees; trucking and contracting costs for intermodal containers; leased automobile maintenance expenses; and tools and supplies. Increased contract services expense (including equipment maintenance) of $33 million primarily contributed to the higher expenses in the first quarter of 2010. A decrease in activity for locomotive and freight car maintenance drove lower material costs, partially offsetting these increases.

Depreciation – The majority of depreciation relates to road property, including rail, ties, ballast, and other track material. A higher depreciable asset base, reflecting higher capital spending in recent years, increased depreciation expense in the first quarter of 2010. Costs also increased $15 million in the first quarter of 2010 due to the restructuring of certain locomotive leases in the second quarter of 2009. Lower depreciation rates for rail and other track material partially offset the increase. The lower rates, which became effective January 1, 2010, resulted from reduced track usage (based on lower gross ton-miles) in 2009.

Equipment and Other Rents – Equipment and other rents expense primarily includes rental expense that the Railroad pays for freight cars owned by other railroads or private companies; freight car, intermodal, and locomotive leases; other specialty equipment leases; and office and other rentals. The restructuring of locomotive leases (completed in May 2009) reduced lease expense by $22 million in the first quarter of 2010. Lower lease expense for freight cars and intermodal containers also contributed to the decrease in costs. Short-term freight rental expense increased in the first quarter of 2010 compared to 2009, reflecting increased shipments of finished vehicles and intermodal containers.

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Other – Other expenses include personal injury, freight and property damage, insurance, environmental, bad debt, state and local taxes, utilities, telephone and cellular, employee travel, computer software, and other general expenses. Other costs were higher in the first quarter of 2010 compared to the first quarter of 2009, primarily driven by a one-time payment of $45 million related to a transaction with CSXI. Reduced personal injury expense due to continued improvements in our safety experience and lower expenses for bad debts driven by improved economic conditions partially offset these increases.

Non-Operating Items

Millions,					%
for the Three Months Ended March 31,		2010		2009	Change
Other income	$	1	$	23	(96)%
Interest expense		(155)		(141)	10
Income taxes		(318)		(191)	66

Other Income – Other income decreased in the first quarter of 2010 compared to 2009 due to premiums paid for early debt redemption, higher environmental remediation costs associated with non-operating properties, and lower gains from real estate sales.

Interest Expense – Interest expense increased in the first quarter 2010 versus 2009 due to higher weighted-average debt levels. In the first quarter of 2010, our weighted-average debt level was $10.0 billion (including the restructuring of locomotive leases in May 2009), compared to $9.0 billion in the first quarter of 2009. Our effective interest rate was 6.2% in both the first quarter of 2010 and 2009.

Income Taxes – Income taxes were $127 million higher in the first quarter of 2010 compared to 2009, due to an increase in pre-tax income. Our effective tax rates were 38.1% and 34.5% in the first quarter of 2010 and 2009, respectively. The lower 2009 effective rate was primarily due to California legislation that changed how we determine the amount of our income subject to California tax. This change reduced our effective tax rate by 2.5% in the first quarter of 2009.

OTHER OPERATING/PERFORMANCE AND FINANCIAL STATISTICS

We report key Railroad performance measures weekly to the Association of American Railroads (AAR), including carloads, average daily inventory of rail cars on our system, average train speed, and average terminal dwell time. We provide this data on our website at www.up.com/investors/reports/index.shtml.

Operating/Performance Statistics

Railroad performance measures reported to the AAR, as well as other performance measures, are included in the table below:

			%
For the Three Months Ended March 31,	2010	2009	Change
Average train speed (miles per hour)	26.2	27.2	(4) %
Average terminal dwell time (hours)	26.1	24.3	7 %
Average rail car inventory (thousands)	277.5	286.4	(3) %
Gross ton-miles (billions)	224.7	206.6	9 %
Revenue ton-miles (billions)	126.8	118.4	7 %
Operating ratio	75.1	80.4	(5.3) pt
Employees (average)	42,130	44,997	(6) %
Customer satisfaction index	87	87	- pt

Average Train Speed – Average train speed is calculated by dividing train miles by hours operated on our main lines between terminals. Severe winter weather and track maintenance and improvement programs were the main drivers of the 4% decline in average train speed in the first quarter of 2010 compared to 2009.

Average Rail Car Inventory – Average rail car inventory is the daily average number of rail cars on our lines, including rail cars in storage. Lower average rail car inventory reduces congestion in our yards and

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sidings, which increases train speed, reduces average terminal dwell time, and improves rail car utilization. Average rail car inventory decreased 3% in the first quarter of 2010 compared to 2009 driven by improved freight car utilization, cycle times, terminations of expired rail car leases, and the retirement of old rail cars.

Average Terminal Dwell Time – Average terminal dwell time is the average time that a rail car spends at our terminals. Lower average terminal dwell time improves asset utilization and service. Average terminal dwell time increased 7% during the first quarter of 2010 compared to 2009 driven by severe winter weather.

Gross and Revenue Ton-Miles – Gross ton-miles are calculated by multiplying the weight of loaded or empty freight cars by the number of miles hauled. Revenue ton-miles are calculated by multiplying the weight of freight by the number of tariff miles. Gross and revenue-ton-miles increased 9% and 7%, respectively, in the first quarter of 2010 compared to 2009, due to a 13% increase in carloads. Commodity mix changes (notably automotive and intermodal shipments, which were 56% and 21% higher in 2010, respectively, compared to 2009) drove the variance in year-over-year growth between gross ton-miles and revenue ton-miles compared to growth in carloads.

Operating Ratio – Operating ratio is defined as our operating expense as a percentage of operating revenues. Our operating ratio improved 5.3 points to 75.1% in the first quarter of 2010. Volume increases, core pricing gains, network management initiatives, and improved productivity drove the improvement and more than offset the impact of higher fuel prices.

Employees – Productivity initiatives reduced employee levels throughout the company in the first quarter of 2010 versus 2009. Although volume increased 13%, the additional volumes were leveraged through network and other productivity initiatives contributing to a lower full-time equivalent train and engine force level. Improved productivity within the support organizations also reduced force levels during the period compared to 2009.

Customer Satisfaction Index – The customer satisfaction survey asks customers to rate how satisfied they are with our performance over the last 12 months on a variety of attributes. A higher score indicates higher customer satisfaction. The survey results in the first quarter of 2010 generally reflect customer recognition of our service.

Debt to Capital / Adjusted Debt to Capital

Millions, Except Percentages		Mar. 31, 2010		Dec. 31, 2009
Debt (a)	$	9,719	$	9,848
Equity		17,213		16,801
Capital (b)	$	26,932	$	26,649
Debt to capital (a/b)		36.1%		37.0%
Millions, Except Percentages		Mar. 31, 2010		Dec. 31, 2009
Debt	$	9,719	$	9,848
Value of sold receivables		-		400
Debt including value of sold receivables		9,719		10,248
Net present value of operating leases		3,519		3,672
Unfunded pension and OPEB		456		456
Adjusted debt (a)		13,694		14,376
Equity		17,213		16,801
Adjusted capital (b)	$	30,907	$	31,177
Adjusted debt to capital (a/b)		44.3%		46.1%

Adjusted debt to capital is a non-GAAP financial measure under SEC Regulation G and Item 10 of SEC Regulation S-K. We believe this measure is important to management and investors in evaluating the

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total amount of leverage in our capital structure, including off-balance sheet lease obligations, which we generally incur in connection with financing the acquisition of locomotives and freight cars and certain facilities. Effective January 1, 2010, the value of the outstanding undivided interest held by investors under our receivables securitization facility is included in our Condensed Consolidated Statement of Financial Position as debt due after one year. At March 31, 2010, that amount was $100 million. Operating leases were discounted using 6.2% at March 31, 2010 and 6.3% at December 31, 2009, respectively. The lower discount rate reflects changes to interest rates and our current financing costs. We monitor the ratio of adjusted debt to capital as we manage our capital structure to balance cost-effective and efficient access to the capital markets with the Corporation’s overall cost of capital. Adjusted debt to capital should be considered in addition to, rather than as a substitute for, debt to capital. The tables above provide a reconciliation from debt to capital to adjusted debt to capital.

LIQUIDITY AND CAPITAL RESOURCES

Financial Condition

Cash Flows
Millions, for the Three Months Ended March 31,		2010		2009
Cash provided by operating activities	$	656	$	718
Cash used in investing activities		(495)		(628)
Cash provided by/(used in) financing activities		(258)		127
Net change in cash and cash equivalents	$	(97)	$	217

Cash Provided by Operating Activities – The change in accounting treatment for our receivable securitization facility from a sale of undivided interests (recorded as an operating activity) to a secured borrowing (recorded as a financing activity) decreased cash provided by operating activities by $400 million in the first quarter of 2010. Higher net income and lower income tax payments in the first three months of 2010 compared to 2009 mostly offset the decrease.

Cash Used in Investing Activities – Lower capital investments decreased cash used in investing activities. In addition, in the first three months of 2009, we purchased equipment totaling $113 million that was pending financing at March 31, 2009.

The table below details cash capital investments.

Millions,
for the Three Months Ended March 31,		2010		2009
Rail and other track material	$	134	$	151
Ties		108		120
Ballast		48		51
Other [a]		49		71
Total road infrastructure replacements		339		393
Line expansion and other capacity projects		19		57
Commercial facilities		31		10
Total capacity and commercial facilities		50		67
Locomotives and freight cars		16		25
Positive train control		13		2
Technology and other		43		34
Total cash capital investments	$	461	$	521

[a] Other includes bridges and tunnels, signals, other road assets, and road work equipment.

Cash Used in Financing Activities – Cash used in financing activities increased in the first three months of 2010 due to a net debt reduction of $131 million compared to a net debt increase of $262 million in 2009.

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Free Cash Flow – Free cash flow is defined as cash provided by operating activities less cash used in investing and dividends paid. Free cash flow is a non-GAAP financial measure under SEC Regulation G. We believe free cash flow is important to management and investors in evaluating our financial performance and measures our ability to generate cash without incurring additional external financings. Free cash flow should be considered in addition to, rather than as a substitute for, cash provided by operating activities. The table below reconciles cash provided by operating activities (GAAP measure) to free cash flow (non-GAAP measure).

Millions,
for the Three Months Ended March 31,		2010		2009
Cash provided by operating activities	$	656	$	718
Receivables securitization facility [a]		400		84
Cash provided by operating activities excl. receivables securitization facility		1,056		802
Cash used in investing activities		(495)		(628)
Dividends paid		(135)		(136)
Free cash flow	$	426	$	38

[a] Effective January 1, 2010, new accounting guidance requires us to account for receivables transferred under our receivables securitization facility as secured borrowings in our Condensed Consolidated Statements of Financial Position and as financing activities in our Condensed Consolidated Statements of Cash Flows. The receivables securitization facility line in the above table is included in our free cash flow calculation to adjust cash provided by operating activities as though our receivables securitization facility had been accounted for under the new accounting guidance for all periods presented.

Financing Activities

Credit Facilities – On March 31, 2010, we had $1.9 billion of credit available under our revolving credit facility (the facility). The facility is designated for general corporate purposes and supports the issuance of commercial paper. We did not draw on the facility during the three months ended March 31, 2010. Commitment fees and interest rates payable under the facility are similar to fees and rates available to comparably rated, investment-grade borrowers. The facility allows for borrowings at floating rates based on London Interbank Offered Rates, plus a spread, depending upon our senior unsecured debt ratings. The facility requires Union Pacific Corporation to maintain a debt-to-net-worth coverage ratio as a condition to making a borrowing. At March 31, 2010 and December 31, 2009 (and at all times during the first quarter), we were in compliance with this covenant.

The definition of debt used for purposes of calculating the debt-to-net-worth coverage ratio includes, among other things, certain credit arrangements, capital leases, guarantees and unfunded and vested pension benefits under Title IV of ERISA. At March 31, 2010, the debt-to-net-worth coverage ratio allowed us to carry up to $34.4 billion of debt (as defined in the facility), and we had $10.3 billion of debt (as defined in the facility) outstanding at that date. Under our current capital plans, we expect to continue to satisfy the debt-to-net-worth coverage ratio; however, many factors beyond our reasonable control could affect our ability to comply with this provision in the future. The facility does not include any other financial restrictions, credit rating triggers (other than rating-dependent pricing), or any other provision that could require us to post collateral. The facility also includes a $75 million cross-default provision and a change-of-control provision. The term of the facility will expire in April 2012, and we currently intend to replace the facility with a substantially similar credit agreement on or before the expiration date, which is consistent with our past practices with respect to our credit facilities.

At March 31, 2010 we had no commercial paper outstanding. During the three months ended March 31, 2010, we did not issue or repay any commercial paper.

Receivables Securitization Facility – In June 2009, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2009-16, Accounting for Transfers of Financial Assets (ASU 2009-16). ASU 2009-16 limits the circumstances in which transferred financial assets can be derecognized and requires enhanced disclosures regarding transfers of financial assets and a transferor’s continuing involvement with transferred financial assets. We adopted the authoritative accounting guidance on January 1, 2010. As a result, we no longer account for the value of the outstanding undivided interest held by investors under our receivables securitization facility as a sale. In addition,

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transfers of receivables occurring on or after January 1, 2010 are reflected as debt issued in our Condensed Consolidated Statements of Cash Flows, and the value of the outstanding undivided interest held by investors at March 31, 2010 is accounted for as a secured borrowing and is included in our Condensed Consolidated Statements of Financial Position as debt due after one year.

Under the receivables securitization facility, the Railroad sells most of its accounts receivable to Union Pacific Receivables, Inc. (UPRI), a bankruptcy-remote subsidiary. UPRI may subsequently transfer, without recourse on a 364-day revolving basis, an undivided interest in eligible accounts receivable to investors. The total capacity to transfer undivided interests to investors under the facility was $600 million at March 31, 2010 and December 31, 2009, respectively. The value of the outstanding undivided interest held by investors under the facility was $100 million and $400 million at March 31, 2010 and December 31, 2009, respectively. The value of the undivided interest held by investors was supported by $1,006 million and $817 million of accounts receivable at March 31, 2010 and December 31, 2009, respectively. At March 31, 2010 and December 31, 2009, the value of the interest retained by UPRI was $1,006 million and $417 million, respectively. This retained interest is included in accounts receivable, net in our Condensed Consolidated Statements of Financial Position.

The value of the outstanding undivided interest held by investors could fluctuate based upon the availability of eligible receivables and is directly affected by changing business volumes and credit risks, including default and dilution. If default or dilution ratios increase one percent, the value of the outstanding undivided interest held by investors would not change as of March 31, 2010. Should our credit rating fall below investment grade, the value of the outstanding undivided interest held by investors would be reduced, and, in certain cases, the investors would have the right to discontinue the facility.

The Railroad services the sold receivables; however, the Railroad does not recognize any servicing asset or liability as the servicing fees adequately compensate the Railroad for these responsibilities. The Railroad collected approximately $3.7 billion and $3.5 billion during the three months ended March 31, 2010 and 2009, respectively. UPRI used certain of these proceeds to purchase new receivables under the facility.

The costs of the receivables securitization facility include interest, which will vary based on prevailing commercial paper rates, program fees paid to banks, commercial paper issuing costs, and fees for unused commitment availability. The costs of the receivables securitization facility are included in interest expense and were $2 million for the three months ended March 31, 2010. Prior to adoption of the new accounting guidance, the costs of the receivables securitization facility were included in other income and were $3 million for the three months ended March 31, 2009.

The investors have no recourse to the Railroad’s other assets except for customary warranty and indemnity claims. Creditors of the Railroad do not have recourse to the assets of UPRI.

Shelf Registration Statement and Significant New Borrowings – We filed a new shelf registration statement, which became effective February 10, 2010. Our Board of Directors authorized the issuance of up to $3 billion of debt securities, replacing the $2.25 billion of authority remaining under our shelf registration filed in March 2007. Under the shelf registration, we may issue, from time to time, any combination of debt securities, preferred stock, common stock, or warrants for debt securities or preferred stock in one or more offerings. We have no immediate plans to issue equity securities; however, we will continue to explore opportunities to replace existing debt or access capital through issuances of debt securities under our shelf registration, and, therefore, we may issue additional debt securities at any time.

As of March 31, 2010, and December 31, 2009, we reclassified as long-term debt approximately $830 million and $320 million, respectively, of debt due within one year that we intend to refinance. This reclassification reflects our ability and intent to refinance any short-term borrowings and certain current maturities of long-term debt on a long-term basis.

Debt Redemption – On March 22, 2010, we redeemed $175 million of our 6.5% notes due April 15, 2012. The redemption resulted in an early extinguishment charge of $16 million in the first quarter of 2010. In addition, we reduced the amount of the outstanding undivided interest under our receivables securitization facility from $400 million to $100 million during the first quarter of 2010.

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Share Repurchase Program – On May 1, 2008, our Board of Directors authorized the repurchase of 40 million common shares by March 31, 2011. Management’s assessments of market conditions and other pertinent facts guide the timing and volume of all repurchases. If we elect to make repurchases of our common stock under this program in 2010, we expect to fund such repurchases through cash generated from operations, the sale or lease of various operating and non-operating properties, debt issuances, and cash on hand. During the three months ended March 31, 2010 and 2009, we did not repurchase shares under this program. Repurchased shares are recorded in treasury stock at cost, which includes any applicable commissions and fees.

Off-Balance Sheet Arrangements, Contractual Obligations, and Commercial Commitments

As described in the notes to the Condensed Consolidated Financial Statements and as referenced in the tables below, we have contractual obligations and commercial commitments that may affect our financial condition. However, based on our assessment of the underlying provisions and circumstances of our contractual obligations and commercial commitments, including material sources of off-balance sheet and structured finance arrangements, there is no known trend, demand, commitment, event, or uncertainty that is reasonably likely to occur that would have a material adverse effect on our consolidated results of operations, financial condition, or liquidity. In addition, our commercial obligations, financings, and commitments are customary transactions that are similar to those of other comparable corporations, particularly within the transportation industry.

The following tables identify material obligations and commitments as of March 31, 2010:

Contractual Obligations Millions		Total		Apr. 1 through Dec. 31, 2010		Payments Due by Dec. 31,
						2011		2012		2013		2014		After 2014		Other
Debt [a]	$	12,397	$	772	$	896	$	914	$	986	$	966	$	7,863	$	-
Operating leases [b]		5,069		337		568		487		424		354		2,899		-
Capital lease obligations [c]		2,902		201		292		251		256		268		1,634		-
Purchase obligations [d]		2,693		460		356		217		221		200		1,207		32
Other postretirement benefits [e]		425		31		42		43		43		44		222		-
Income tax contingencies [f]		61		4		-		-		-		-		-		57
Total contractual obligations	$	23,547	$	1,805	$	2,154	$	1,912	$	1,930	$	1,832	$	13,825	$	89

[a] Excludes capital lease obligations of $2,019 million, and unamortized discount of $(97) million. Includes an interest component of $4,600 million.

[b] Includes leases for locomotives, rail cars, other equipment, and real estate.

[c] Represents total obligations, including interest component of $883 million.

[d] Purchase obligations include locomotive maintenance contracts; purchase commitments for ties, ballast, and rail; and agreements to purchase other goods and services. For amounts where we can not reasonably estimate the year of settlement, they are reflected in the Other column.

[e] Includes estimated other postretirement, medical, and life insurance payments and payments made under the unfunded pension plan for the next ten years. No amounts are included for funded pension as no contributions are currently required.

[f] Future cash flows for income tax contingencies reflect the recorded liability for unrecognized tax benefits, including interest and penalties, as of March 31, 2010. Where we can reasonably estimate the years in which these liabilities may be settled, this is shown in the table. For amounts where we can not reasonably estimate the year of settlement, they are reflected in the Other column.

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Other Commercial Commitments Millions		Total		Apr. 1 through Dec. 31, 2010		Amount of Commitment Expiration by Dec.  31,
						2011		2012		2013		2014		After 2014
Credit facilities [a]	$	1,900	$	-	$	-	$	1,900	$		$	-	$	-
Receivables securitization facility [b]		600		600		-		-		-		-		-
Guarantees [c]		392		9		74		22		8		214		65
Standby letters of credit [d]		22		9		13		-		-		-		-
Total commercial commitments	$	2,914	$	618	$	87	$	1,922	$	8	$	214	$	65

[a] None of the credit facility was used as of March 31, 2010.

[b] $100 million of the receivables securitization facility was utilized at March 31, 2010, which is accounted for as debt. The full program matures in August 2010.

[c] Includes guaranteed obligations related to our headquarters building, equipment financings, and affiliated operations.

[d] None of the letters of credit were drawn upon as of March 31, 2010.

OTHER MATTERS

Asserted and Unasserted Claims – Various claims and lawsuits are pending against us and certain of our subsidiaries. We cannot fully determine the effect of all asserted and unasserted claims on our consolidated results of operations, financial condition, or liquidity; however, to the extent possible, where asserted and unasserted claims are considered probable and where such claims can be reasonably estimated, we have recorded a liability. We do not expect that any known lawsuits, claims, environmental costs, commitments, contingent liabilities, or guarantees will have a material adverse effect on our consolidated results of operations, financial condition, or liquidity after taking into account liabilities and insurance recoveries previously recorded for these matters.

Indemnities – Our maximum potential exposure under indemnification arrangements, including certain tax indemnifications, can range from a specified dollar amount to an unlimited amount, depending on the nature of the transactions and the agreements. Due to uncertainty as to whether claims will be made or how they will be resolved, we cannot reasonably determine the probability of an adverse claim or reasonably estimate any adverse liability or the total maximum exposure under these indemnification arrangements. We do not have any reason to believe that we will be required to make any material payments under these indemnity provisions.

CAUTIONARY INFORMATION

Certain statements in this report, and statements in other reports or information filed or to be filed with the SEC (as well as information included in oral statements or other written statements made or to be made by us), are, or will be, forward-looking statements as defined by the Securities Act of 1933 and the Securities Exchange Act of 1934. These forward-looking statements and information include, without limitation, the statements and information set forth under the caption “Liquidity and Capital Resources” in Item 2, and any other statements or information in this report regarding: expectations as to operational or service improvements; expectations regarding the effectiveness of steps taken or to be taken to improve operations, service, infrastructure improvements, and transportation plan modifications; expectations as to cost savings, revenue growth, and earnings; the time by which goals, targets, or objectives will be achieved; projections, predictions, expectations, estimates, or forecasts as to our business, financial and operational results, future economic performance, and general economic conditions; proposed new products and services; estimates of costs relating to environmental remediation and restoration; expectations that claims, litigation, environmental costs, commitments, contingent liabilities, labor negotiations or agreements, or other matters will not have a material adverse effect on our consolidated results of operations, financial condition, or liquidity and any other similar expressions concerning matters that are not historical facts.

Forward-looking statements and information reflect the good faith consideration by management of currently available information, and may be based on underlying assumptions believed to be reasonable under the circumstances. However, such information and assumptions (and, therefore, such forward-looking statements and information) are or may be subject to variables or unknown or unforeseeable

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events or circumstances over which management has little or no influence or control. The Risk Factors in Item 1A of our 2009 Annual Report on Form 10-K, filed February 5, 2010, could affect our future results and could cause those results or other outcomes to differ materially from those expressed or implied in the forward-looking statements, and this report, including this Item 2, should be read in conjunction with these Risk Factors. To the extent circumstances require or we deem it otherwise necessary, we will update or amend these risk factors in a Form 10-Q or Form 8-K. Information regarding new risk factors or material changes to our risk factors, if any, is set forth in Item 1A of Part II of this report. Forward-looking statements should not be read as a guarantee of future performance or results, and will not necessarily be accurate indications of the times that, or by which, such performance or results will be achieved. Forward-looking information is subject to risks and uncertainties that could cause actual performance or results to differ materially from those expressed in the statements.

Forward-looking statements speak only as of the date the statement was made. We assume no obligation to update forward-looking information to reflect actual results, changes in assumptions or changes in other factors affecting forward-looking information. If we do update one or more forward-looking statements, no inference should be drawn that we will make additional updates with respect thereto or with respect to other forward-looking statements.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

There were no material changes to the Quantitative and Qualitative Disclosures About Market Risk previously disclosed in our 2009 Annual Report on Form 10-K.

Item 4. Controls and Procedures

As of the end of the period covered by this report, the Corporation carried out an evaluation, under the supervision and with the participation of the Corporation’s management, including the Corporation’s Chief Executive Officer (CEO) and Executive Vice President – Finance and Chief Financial Officer (CFO), of the effectiveness of the design and operation of the Corporation’s disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. Based upon that evaluation, the CEO and the CFO concluded that, as of the end of the period covered by this report, the Corporation’s disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time periods specified by the SEC, and that such information is accumulated and communicated to management, including the CEO and CFO, as appropriate, to allow timely decisions regarding required disclosure.

Additionally, the CEO and CFO determined that there have been no changes to the Corporation’s internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) during the last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Corporation’s internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we are involved in legal proceedings, claims, and litigation that occur in connection with our business. We routinely assess our liabilities and contingencies in connection with these matters based upon the latest available information and, when necessary, we seek input from our third-party advisors when making these assessments. Consistent with SEC rules and requirements, we describe below material pending legal proceedings (other than ordinary routine litigation incidental to our business), material proceedings known to be contemplated by governmental authorities, other proceedings arising under federal, state, or local environmental laws and regulations (including governmental proceedings involving potential fines, penalties, or other monetary sanctions in excess of $100,000) and such other pending matters that we may determine to be appropriate.

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Environmental Matters

As we reported in our Quarterly Report on Form 10-Q for the quarter ended June 30, 2008, the Railroad received notice from the United States Department of Justice (DOJ) on May 8, 2008, indicating its intent to file suit for civil penalties in connection with a March 6, 2005 derailment near Kamela, Oregon. The derailment resulted in the release of approximately 900 gallons of diesel fuel from ruptured fuel tanks of derailed refrigerator cars. Some of this fuel entered Dry Creek, a tributary to the Grande Ronde River. Additionally, on June 9, 2009, the Oregon Department of Environmental Quality notified the Railroad that it would be seeking $40,000 in civil penalties under state law in connection with this incident. In February 2010, a settlement was reached and a consent judgment entered by the United States District Court for the District of Oregon, under which the Railroad agreed to pay the United States a civil penalty of $100,000 and the State of Oregon a civil penalty of $40,000 in full settlement of their claims in connection with this matter.

During the first quarter of 2010, we received notices from Environmental Protection Agency (EPA) Region 8 and DOJ alleging that we may be liable under federal environmental laws for violating the Clean Water Act and the Oil Pollution Prevention Act relating to derailments and spills and UPRR’s Spill Prevention Countermeasure and Control Plans (SPCC) and its Stormwater Pollution Prevention Plans (SWPPP) in Colorado, Utah, and Wyoming. We cannot predict the ultimate impact of these proceedings because we are continuing to investigate and negotiate with the EPA Region 8 and DOJ. The amount of the proposed penalty, although uncertain, could exceed $100,000.

We received notices from the EPA and state environmental agencies alleging that we are or may be liable under federal or state environmental laws for remediation costs at various sites throughout the United States, including sites on the Superfund National Priorities List or state superfund lists. We cannot predict the ultimate impact of these proceedings and suits because of the number of potentially responsible parties involved, the degree of contamination by various wastes, the scarcity and quality of volumetric data related to many of the sites, and the speculative nature of remediation costs.

Other Matters

As we reported in our Quarterly Report on Form 10-Q for the quarter ended June 30, 2007, 20 small rail shippers (many of whom are represented by the same law firms) filed virtually identical antitrust lawsuits in various federal district courts against us and four other Class I railroads in the U.S. The original plaintiff filed the first of these claims in the U.S. District Court in New Jersey on May 14, 2007, and the additional plaintiffs filed claims in district courts in various states, including Florida, Illinois, Alabama, Pennsylvania, and the District of Columbia. These suits allege that the named railroads engaged in price-fixing by establishing common fuel surcharges for certain rail traffic.

We received additional complaints following the initial claim, increasing the total number of complaints to 30. In addition to suits filed by direct purchasers of rail transportation, a few of the suits involve plaintiffs alleging that they are or were indirect purchasers of rail transportation and seek to represent a purported class of indirect purchasers of rail transportation that paid fuel surcharges. These complaints added allegations under state antitrust and consumer protection laws. On November 6, 2007, the Judicial Panel on Multidistrict Litigation ordered that all of the rail fuel surcharge cases be transferred to Judge Paul Friedman of the U.S. District Court in the District of Columbia for coordinated or consolidated pretrial proceedings. Subsequently, the direct purchaser plaintiffs and the indirect purchaser plaintiffs filed Consolidated Amended Class Action Complaints against UPRR and three other Class I railroads.

One additional shipper filed a separate anti-trust suit during 2008. Subsequently, the shipper voluntarily dismissed the action without prejudice.

On October 10, 2008, Judge Friedman heard oral arguments with respect to the defendant railroads’ motions to dismiss. In a ruling on November 7, 2008, Judge Friedman denied the motion with respect to the direct purchasers’ complaint, and pretrial proceedings are underway in that case. On December 31, 2008, Judge Friedman ruled that the allegations of the indirect purchasers based upon state antitrust, consumer protection and unjust enrichment laws must be dismissed. He also ruled, however, that the plaintiffs can proceed with their claim for injunctive relief under the federal antitrust laws, which is identical to a claim by the direct purchaser plaintiffs. The indirect purchasers appealed Judge Friedman’s ruling to the U.S. Court of Appeals for the District of Columbia. On April 16, 2010, the U.S. Court of Appeals for

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the District of Columbia affirmed Judge Friedman’s ruling dismissing the indirect purchasers’ claims based on various state laws.

We deny the allegations that our fuel surcharge programs violate the antitrust laws or any other laws. We believe that these lawsuits are without merit, and we will vigorously defend our actions. Therefore, we currently believe that these matters will not have a material adverse effect on any of our results of operations, financial condition, and liquidity.

Item 1A. Risk Factors

There were no material changes from the risk factors previously disclosed in our 2009 Annual Report on Form 10-K.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Purchases of Equity Securities – The following table presents common stock repurchases during each month for the first quarter of 2010:

Period	Total Number of Shares Purchased [a]	Average Price Paid Per Share	Total Number of Shares Purchased as Part of a Publicly Announced Plan or Program [b]	Maximum Number of Shares That May Yet Be Purchased Under the Plan or Program [b]
Jan. 1 through Jan. 31	129,628	$        62.94	-	32,577,090
Feb. 1 through Feb. 28	7,276	62.48	-	32,577,090
Mar. 1 through Mar. 31	27,463	72.87	-	32,577,090
Total	164,367	$        64.58	-	N/A

[a] Total number of shares purchased during the quarter represents shares delivered or attested to UPC by employees to pay stock option exercise prices, satisfy excess tax withholding obligations for stock option exercises or vesting of retention units, and pay withholding obligations for vesting of retention shares.

[b] On May 1, 2008, our Board of Directors authorized repurchases of up to 40 million shares of our common stock through March 31, 2011. We did not repurchase any shares under this publicly announced plan during 2009. These repurchases may be made on the open market or through other transactions. Our management has sole discretion with respect to determining the timing and amount of these transactions.

Dividend Restrictions – Our revolving credit facility includes a debt-to-net worth covenant that, under certain circumstances, restricts the payment of cash dividends to our shareholders. The amount of retained earnings available for dividends was $12.1 billion and $11.7 billion at March 31, 2010 and December 31, 2009, respectively.

Item 3. Defaults Upon Senior Securities

None.

Item 5. Other Information

None.

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Item 6. Exhibits

Exhibit No.	Description
Filed with this Statement
12	Ratio of Earnings to Fixed Charges for the Three Months Ended March 31, 2010 and 2009.
18	Independent Registered Public Accounting Firm’s Preferability Letter dated April 23, 2010, Regarding Change in Accounting Principle.
31(a)	Certifications Pursuant to Rule 13a-14(a), of the Exchange Act, as Adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - James R. Young.
31(b)	Certifications Pursuant to Rule 13a-14(a), of the Exchange Act, as Adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 - Robert M. Knight, Jr.
32	Certifications Pursuant to 18 U.S.C. Section 1350, as Adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 - James R. Young and Robert M. Knight, Jr.
101	eXtensible Business Reporting Language (XBRL) documents submitted electronically: 101.INS (XBRL Instance Document), 101.SCH (XBRL Taxonomy Extension Schema Document), 101.CAL (XBRL Calculation Linkbase Document), 101.LAB (XBRL Taxonomy Label Linkbase Document), 101.DEF (XBRL Taxonomy Definition Linkbase Document) and 101.PRE (XBRL Taxonomy Presentation Linkbase Document). The following financial and related information from Union Pacific Corporation’s Quarterly Report on Form 10-Q for the period ended March 31, 2010 (filed with the SEC on April 23, 2010), is formatted in XBRL and submitted electronically herewith: (i) Consolidated Statements of Income for the periods ended March 31, 2010 and 2009, (ii) Consolidated Statements of Financial Position at March 31, 2010 and December 31, 2009, (iii) Consolidated Statements of Cash Flows for the periods ended March 31, 2010 and 2009, (iv) Consolidated Statements of Changes in Common Shareholders’ Equity for the periods ended March 31, 2010 and 2009, and (v) the Notes to the Consolidated Financial Statements, tagged as blocks of text.
Incorporated by Reference
3(a)	By-Laws of UPC, as amended, effective May 14, 2009, are incorporated herein by reference to Exhibit 3.2 to the Corporation’s Current Report on Form 8-K dated May 15, 2009.
3(b)	Revised Articles of Incorporation of UPC, as amended through May 1, 2008, are incorporated herein by reference to Exhibit 3(a) to the Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2008.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Dated: April 23, 2010

		UNION PACIFIC CORPORATION
		(Registrant)
By	/s/ Robert M. Knight, Jr.
	Robert M. Knight, Jr.
	Executive Vice President – Finance and Chief Financial Officer
	(Principal Financial Officer)
By	/s/ Jeffrey P. Totusek
	Jeffrey P. Totusek
	Vice President and Controller
	(Principal Accounting Officer)

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EX-12

Exhibit 12

RATIO OF EARNINGS TO FIXED CHARGES (Unaudited)

Union Pacific Corporation and Subsidiary Companies

Millions, Except for Ratios
for the Three Months Ended March 31,	2010	2009
		(Adjusted)*
Fixed charges:
Interest expense including amortization of debt discount	$          155	$          141
Portion of rentals representing an interest factor	35	42
Total fixed charges	$          190	$          183
Earnings available for fixed charges:
Net income	$          516	$          362
Equity earnings net of distributions	4	(2)
Income taxes	318	191
Fixed charges	190	183
Earnings available for fixed charges	$        1,028	$          734
Ratio of earnings to fixed charges	5.4	4.0

* Certain amounts have been adjusted for the retrospective change in accounting principle for rail grinding (See Note 3 in Item I, Notes to the Condensed Consolidated Financial Statements).

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EX-18

Exhibit 18

April 23, 2010

Union Pacific Corporation

1400 Douglas Street

Omaha, Nebraska 68179

Dear Sirs/Madams:

At your request, we have read the description included in your Quarterly Report on Form 10-Q to the Securities and Exchange Commission for the quarter ended March 31, 2010, of the facts relating to the change in accounting policy for rail grinding costs from a capitalization method to a direct expense method. We believe, on the basis of the facts so set forth and other information furnished to us by appropriate officials of Union Pacific Corporation and Subsidiary Companies (the Corporation), that the accounting change described in your Form 10-Q is to an alternative accounting principle that is preferable under the circumstances.

We have not audited any consolidated financial statements of the Corporation as of any date or for any period subsequent to December 31, 2009. Therefore, we are unable to express, and we do not express, an opinion on the facts set forth in the above-mentioned Form 10-Q, on the related information furnished to us by officials of the Corporation, or on the financial position, results of operations, or cash flows of Union Pacific Corporation and Subsidiary Companies as of any date or for any period subsequent to December 31, 2009.

Yours truly,

Omaha, Nebraska

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EX-31.(A)

Exhibit 31(a)

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

I, James R. Young, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Union Pacific Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 23, 2010

/s/ James R. Young

James R. Young

Chairman, President and

Chief Executive Officer

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EX-31.(B)

Exhibit 31(b)

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

I, Robert M. Knight, Jr., certify that:

1. I have reviewed this quarterly report on Form 10-Q of Union Pacific Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: April 23, 2010

/s/ Robert M. Knight, Jr.

Robert M. Knight, Jr.

Executive Vice President – Finance and

Chief Financial Officer

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EX-32

Exhibit 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the accompanying quarterly report of Union Pacific Corporation (the Corporation) on Form 10-Q for the period ending March 31, 2010, as filed with the Securities and Exchange Commission on the date hereof (the Report), I, James R. Young, Chairman, President and Chief Executive Officer of the Corporation, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

By: /s/ James R. Young

James R. Young

Chairman, President and

Chief Executive Officer

Union Pacific Corporation

April 23, 2010

A signed original of this written statement required by Section 906 has been provided to the Corporation and will be retained by the Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the accompanying quarterly report of Union Pacific Corporation (the Corporation) on Form 10-Q for the period ending March 31, 2010, as filed with the Securities and Exchange Commission on the date hereof (the Report), I, Robert M. Knight, Jr., Executive Vice President - Finance and Chief Financial Officer of the Corporation, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

By: /s/ Robert M. Knight, Jr.

Robert M. Knight, Jr.

Executive Vice President - Finance and

Chief Financial Officer

Union Pacific Corporation

April 23, 2010

A signed original of this written statement required by Section 906 has been provided to the Corporation and will be retained by the Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

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