11-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 11-K

(Mark One)

x	ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934
	For the fiscal year ended December 31, 2014

	OR
o	TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 1-815

THRIFT AND SAVINGS PLAN FOR EMPLOYEES OF SENTINEL TRANSPORTATION, LLC

(Full title of plan)

E. I. DU PONT DE NEMOURS AND COMPANY

1007 Market Street

Wilmington, Delaware 19898

(Name of issuer of the securities held pursuant to the Plan

and the address of its principal executive office)

THRIFT AND SAVINGS PLAN FOR EMPLOYEES OF SENTINEL TRANSPORTATION, LLC

TABLE OF CONTENTS

	Page
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM	1
FINANCIAL STATEMENTS:
Statements of Net Assets Available for Benefits as of December 31, 2014 and 2013	2
Statement of Changes in Net Assets Available for Benefits for the Year Ended December 31, 2014	3
Notes to the Financial Statements	4
SUPPLEMENTAL SCHEDULE*:
Schedule of Assets (Held at End of Year) as of December 31, 2014	19
EXHIBIT INDEX	20
SIGNATURE	21

______________________________________

* All other schedules required by Section 2520.103-10 of the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974 have been omitted because they are not applicable.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Tothe Administrator of

Thrift and Savings Plan for Employees of Sentinel Transportation, LLC

In our opinion, the accompanying statements of net assets available for benefits and the related statement of changes in net assets available for benefits present fairly, in all material respects, the net assets available for benefits of Thrift and Savings Plan for Employees of Sentinel Transportation, LLC (the “Plan”) atDecember 31, 2014and December 31, 2013, and the changes in net assets available for benefits for the year ended December 31, 2014 in conformity with accounting principles generally accepted in the United States of America. These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

The supplemental Schedule of Assets (Held at End of Year) as of December 31, 2014has been subjected to audit procedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental schedule is the responsibility of the Plan’s management. Our audit procedures included determining whether the supplemental schedule reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental schedule. In forming our opinion on the supplemental schedule, we evaluated whether the supplemental schedule, including its form and content, is presented in conformity with the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974.In our opinion, the Schedule of Assets (Held at End of Year) is fairly stated, in all material respects, in relation to the financial statements as a whole.

/s/ PricewaterhouseCoopers LLP

Philadelphia, Pennsylvania

June 22, 2015

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THRIFT AND SAVINGS PLAN FOR EMPLOYEES OF SENTINEL TRANSPORTATION, LLC

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS

AS OF DECEMBER 31, 2014 AND 2013

	2014			2013
Assets:
Investments at fair value:
Plan interest in DuPont and Related Companies Defined Contribution Plan Master Trust	$	49,742,469		$	48,890,969
Mutual funds	708,047			873,679
Common stock	5,300,328			4,866,540
Total investments	55,750,844			54,631,188
Receivables:
Employer’s contributions	2,372,157			2,022,326
Accrued income	13,911			13,907
Notes receivable from participants	2,237,693			2,025,205
Total receivables	4,623,761			4,061,438
Cash	120,900			85,224
Net assets available for benefits, at fair value	60,495,505			58,777,850
Adjustment from fair value to contract value for fully benefit-responsive investment contracts held in Master Trust	(466,037		)	(294,789		)
Net assets available for benefits	$	60,029,468		$	58,483,061

See Notes to the Financial Statements beginning on page 4.

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THRIFT AND SAVINGS PLAN FOR EMPLOYEES OF SENTINEL TRANSPORTATION, LLC

STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS

FOR THE YEAR ENDED DECEMBER 31, 2014

	2014
Additions:
Investment income:
Net investment gain from interest in DuPont and Related Companies Defined Contribution Plan Master Trust	$	2,266,525
Net appreciation in fair value of investments	630,465
Dividend income	173,112
Total investment income	3,070,102
Contributions:
Employer’s contributions	4,532,582
Participants’ contributions	2,788,779
Rollovers	76,395
Total contributions	7,397,756
Interest from notes receivable from participants	87,743
Total additions	10,555,601
Deductions:
Benefits paid to participants	8,878,151
Administrative expenses	131,043
Total deductions	9,009,194
Net increase	1,546,407
Net assets available for benefits:
Beginning of year	58,483,061
End of year	$	60,029,468

See Notes to the Financial Statements beginning on page 4.

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THRIFT AND SAVINGS PLAN FOR EMPLOYEES OF SENTINEL TRANSPORTATION, LLC

NOTES TO THE FINANCIAL STATEMENTS

AS OF DECEMBER 31, 2014 AND 2013, AND FOR THE YEAR ENDED DECEMBER 31, 2014

NOTE 1 — DESCRIPTION OF THE PLAN

The following description of the Thrift and Savings Plan for Employees of Sentinel Transportation, LLC (the "Plan") is provided for general purposes only. Participants should refer to the Plan agreement for a more complete description of the Plan's provisions.

General

The Plan is a defined contribution plan subject to the provisions of the Employee Retirement Income Security Act of 1974 ("ERISA"), as amended, and the Internal Revenue Code ("IRC"). The Plan is a tax-qualified, contributory profit sharing plan. The Plan is available to eligible employees of Sentinel Transportation, LLC (the "Company"), a joint venture whose members are DuPont (80%) and Phillips 66 (20%), as well as employees of affiliated companies that have adopted the Plan.

Administration

The Plan Administrator is the Employee Benefit Board, whose members are appointed by the Board of Managers. The Employee Benefit Board has responsibility for selecting and overseeing the Plan investments and determining the Plan's valuation policies utilizing information provided by the investment advisers, custodians and insurance companies.  The Employee Benefit Plans Board holds authority to appoint trustees and has designated Bank of America, N.A. ("Bank of America") and Northern Trust Corporation ("Northern Trust") as trustees for the Plan. Bank of America is the trustee for the balances in company stocks and mutual funds including the participant-directed brokerage account and also provides recordkeeping and participant services. The Plan entered into a Master Trust Agreement with Northern Trust to establish the DuPont and Related Companies Defined Contribution Plan Master Trust (the "Master Trust"). See Note 4 for further information.

Participation

Regular employees are eligible to participate in the Plan on the first day of the calendar month following their date of hire as an employee. Employees of affiliated companies that have adopted the Plan, who have previously met the eligibility requirements of the Plan, are also eligible to participate in the Plan.

Contributions

Eligible employees may participate in the Plan by authorizing the Company to make a payroll contribution under the Plan ranging from 1% to 100% of bi-weekly compensation. The amount contributed will be deposited into a before-tax account. Participants' bi-weekly contributions up to 6% are called basic deposits. The Company will contribute an amount equal to 100% of the participant's bi-weekly basic deposits. Participants are automatically enrolled in the Plan at a 3% before-tax savings rate and increased 1% annually, up to a maximum of 6% of pay, if no action is taken by the employee within 90 days from the date of hire. Under automatic enrollment, the participant assets are invested in accordance with a managed account feature offered by Bank of America. The participant may elect not to participate in the plan at any time. All of the above participants' and Company contributions are subject to regulatory and Plan limitations.

The Plan provides for discretionary retirement savings contributions to participants hired on or after January 1, 2004. The retirement savings contributions for the year ended December 31, 2014 were $2,372,157. The retirement savings contributions are allocated based on the ratio that the participant's compensation bears to the total compensation of all eligible participants.

Participant Accounts

Each participant's account is credited with the participant's contribution and allocations of (a) the Company's contributions and (b) Plan earnings. Allocations are based on the ratio of the balance of that participant's investment option account to the sum of the balances of all participants' investment option accounts. The benefit to which a participant is entitled is the benefit that can be provided from the participant's vested account.

Investments

Participants direct the investment of their contribution into various investment options offered by the Plan. The Plan currently offers 5 passively managed index funds, 6 actively managed custom-designed funds, 11 target retirement funds, DuPont common stock, a stable value fund and a self-directed brokerage account where participants can choose from approximately 2,200 funds from 100 mutual fund families.

In previous years, the ConocoPhillips Stock Fund was closed to new investments by Plan participants. Plan participants may not invest additional contributions or request a fund transfer into this fund. However, they may transfer out of this fund at any time.

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In 2012, Phillips 66 separated from ConocoPhillips and as a result, the ConocoPhillips Stock Fund was split into the ConocoPhillips Stock Fund and Phillips 66 Stock Fund. The Phillips 66 Stock Fund is closed to new investments by Plan participants.

Vesting

Participant contributions and the Company's matching contributions are fully and immediately vested. Retirement savings contributions become fully vested after any of the following circumstances:

• The participant has completed at least three years of service with the Company;

• The participant reaches normal retirement age while working for the Company;

• The participant terminates employment with the Company due to becoming totally disabled while working for the Company;

• The participant's job with the Company is eliminated;

• The participant's spouse is transferred by the Company to an employment location outside the immediate geographic area while the participant is working for the Company, and the participant terminates employment with the Company.

Notes Receivable from Participants

Participants may borrow up to one-half of their non-forfeitable account balances subject to a minimum of $1,000 up to a maximum equal to the lesser of $50,000 or 50% of their vested account balance. The loans are executed by promissory notes and have a minimum term of 1 year and a maximum term of 5 years, except for qualified residential loans, which have a maximum term of 10 years. The loans bear an interest rate equal to the average rate charged by selected major banks to prime customers for secured loans. The loans are repaid over the term in installments of principal and interest by deduction from pay. A participant also has the right to repay the loan in full at any time without penalty. At December 31, 2014, the loan interest rates ranged from 4.25% to 9.25%.

Payment of Benefits

Participants may request a full distribution of their accounts when they terminate employment with the Company and all affiliates. However, the retirement savings contributions will be paid only to the extent that they are vested in the employee's account. On separation from service, a participant also may elect to receive the value of their account balance in installment payments. Required minimum distributions will begin in April of the calendar year following the later of the year in which the participant attains age 70^1/2 or the year following retirement or termination of employment.

Forfeited Accounts

At December 31, 2014 and 2013, forfeited nonvested accounts totaled $121,525 and $93,287, respectively. Forfeitures can be used, as defined by the Plan, to pay administrative expenses and to reduce the amount of future employer contributions.  During the year ended December 31, 2014, forfeited accounts were used to offset the employer's discretionary retirement savings contributions and reinstate participant’s accounts in the amounts of $92,028 and $1,598, respectively.

Administrative Expenses

Administrative expenses, including, but not limited to, record-keeping expenses, trustee fees and transactional costs may be paid by the Plan, at the election of the Plan Administrator. Expenses paid by the Plan for the year ended December 31, 2014 were $131,043, which excludes expenses paid by the Master Trust. Brokerage fees, transfer taxes, investment fees and other expenses incidental to the purchase and sale of securities and investments shall be included in the cost of such securities or investments, or deducted from the sales proceeds, as the case may be.

NOTE 2 — SIGNIFICANT ACCOUNTING POLICIES

Basis of Accounting

The accompanying financial statements of the Plan have been prepared on the accrual basis of accounting in accordance with generally accepted accounting principles in the United States of America (“GAAP”).

Fully Benefit-Responsive Investment Contracts

Investment contracts held by a defined contribution plan are required to be reported at fair value. However, contract value is the relevant measurement attributable for that portion of the net assets available for benefits of a defined contribution plan attributable to fully benefit-responsive investment contracts because contract value is the amount participants would receive if they were to initiate permitted transactions under the terms of the Plan. Contract value represents contributions made under the contracts, plus earnings, less participants withdrawals and administrative expenses. The Statements of Net Assets Available for Benefits presents

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the fair value of the investment contracts as well as the adjustment of the fully benefit-responsive investment contracts from fair value to contract value. The Statement of Changes in Net Assets Available for Benefits is prepared on a contract value basis.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and changes therein and disclosure of contingent assets and liabilities.  Actual results could differ from those estimates.

Risks and Uncertainties

The Plan utilizes various investment options, which include investments in any combination of equities, fixed income securities, individual guaranteed investment contracts (“GICs”), currency and commodities, futures, forwards, options and swaps. Investment securities, in general, are exposed to various risks, such as interest rate risk, credit risk, and overall market volatility. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such change could materially affect participants' account balances and the amounts reported in the financial statements.

Investment Valuation and Income Recognition

The Plan's investments are stated at fair value. Fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Company stocks are valued at the year-end market price of the common stocks. The mutual funds include the participant-directed brokerage account which consists of shares of registered investment companies comprised of equity and fixed income funds and, is valued at the net asset value of shares held by the Plan at year-end.

Net appreciation (or depreciation) includes the Plan's gains and losses on investments bought and sold as well as held during the year.

Purchases and sales of investments are recorded on a trade-date basis. Realized gains and losses on the sale of company stocks are based on average cost of the securities sold. Interest income is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date. Capital gain distributions are included in dividend income.

Notes Receivable from Participants

Notes receivable from participants are measured at their unpaid principal balance plus any accrued but unpaid interest.  Delinquent participant loans are recorded as distributions based on the terms of the Plan document.

Payment of Benefits

Benefit payments to participants are recorded upon distribution. Amounts allocated to accounts of persons who have elected to withdraw from the Plan, but have not yet been paid, were $120,567 and $20,435 at December 31, 2014 and 2013, respectively.

Recent Accounting Pronouncements

In May 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update No. 2015-07, "Fair Value Measurement (Topic 820)- Disclosures for Investments in Certain Entities that Calculate Net Asset Value per Share or its Equivalent." This guidance removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. The guidance also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using the net asset value per share practical expedient. Rather, those disclosures are limited to investments for which the entity has elected to measure the fair value using that practical expedient. The guidance is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. A reporting entity should apply the amendments retrospectively to all periods presented and earlier application is permitted. Plan management is currently evaluating the impact of adopting this guidance.

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NOTE 3 — INVESTMENTS

Investments that represent 5% or more of the net assets available for benefits as of December 31, 2014 and 2013 consist of the Plan’s interest in the Master Trust and investment in DuPont common stock. See Note 4 for further information.

During 2014, the Plan’s investments (including gains and losses on investments bought and sold, as well as held during the year) appreciated in value as follows:

	2014
Common stock	$	585,061
Mutual funds	45,404
Net appreciation in fair value of investments	$	630,465

For the year ended December 31, 2014, the Plan's net investment gain from interest in the Master Trust amounted to $2,266,525.

NOTE 4 — INTEREST IN MASTER TRUST

The objective of the Master Trust is to allow participants from affiliated plans to invest in several custom designed investment choices through separately managed accounts. The Master Trust contains several actively managed investments pools and commingled index funds offered to participants as “core investment options” and “age-targeted options”.  The investment pools are administered by different investment managers through separately managed accounts at Northern Trust.  The Master Trust also includes the Master Trust Stable Value Fund (the "Stable Value Fund"). DuPont Capital Management Corporation ("DCMC"), a registered investment adviser and wholly-owned subsidiary of DuPont, has the responsibility to oversee the investments' managers and evaluate the funds' performances under the Master Trust, except for the Stable Value Fund, which is managed by DCMC.

At December 31, 2014, the Master Trust includes the assets of the following plans:

• DuPont Retirement Savings Plan

• DuPont 401(k) and Profit Sharing Plan

• Thrift and Savings Plan for Employees of Sentinel Transportation, LLC

To participate in the Master Trust, affiliates who sponsor qualified savings plans and who have adopted the Master Trust Agreement are required to make payments to Northern Trust of designated portions of employees’ savings and other contributions by the affiliate. Investment income relating to the Master Trust is allocated based on the individual Plan’s specific interest within the Master Trust. The Plan’s interest in the Master Trust was 0.49% and 0.51% as of December 31, 2014 and 2013, respectively.

Master Trust Investments

The investments of the Master Trust are reported at fair value. Purchases and sales of the investments within the Master Trust are reflected on a trade-date basis. Dividend income is recorded on the ex-dividend date. Interest income is recorded on the accrual basis.

Cash and short-term investments include cash and short-term interest-bearing investments with initial maturities of three months or less. Such amounts are recorded at cost, plus accrued interest, which approximate fair value.

Mutual funds are valued at the net asset value of shares held by the Master Trust at year-end. Units held in common collective trusts (“CCT's”) are valued at the net asset value as reported by the CCTs’ trustee as a practical expedient to estimate fair value.

Common stock, preferred stock, options and futures traded in active markets on national and international securities exchanges are valued at closing prices on the last business day of each period presented. Securities traded in markets that are not considered active are valued based on quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency.

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Fixed income securities are valued using pricing models maximizing the use of observable inputs for similar securities. This includes basing value on yields currently available on comparable securities of issuers with similar credit ratings.

Forward foreign currency contracts are valued at fair value, as determined by Northern Trust (or independent third parties on behalf of the Master Trust), using quoted forward foreign currency exchange rates. At the end of each period presented, open contracts are valued at the current forward foreign currency exchange rates, and the change in market value is recorded as an unrealized gain or loss. When the contract is closed or delivery taken, the Master Trust records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed.

Swap contracts are valued at fair value, as determined by Northern Trust (or independent third parties on behalf of the Master Trust) utilizing pricing models and taking into consideration exchange quotations on underlying instruments, dealer quotations and other market information.

Investments denominated in currencies other than the United States dollar are converted using exchange rates prevailing at the end of the periods presented. Purchases and sales of such investments are translated at the rate of exchange on the respective dates of such transactions.

Description of the Master Trust’s Investment Contracts

The Master Trust holds three types of investment contracts that are fully benefit-responsive.  In accordance with GAAP, an investment contract is generally required to be reported at fair value, rather than contract value, to the extent it is fully benefit-responsive. The Master Trust holds traditional GICs, synthetic GICs and separate account GICs. For traditional GICs, contract value approximates fair value. The fair value of synthetic and separate account GICs are determined using the market price of the underlying securities and the fair value of the investment contract (“wrapper”).  The underlying fixed income securities of the separate accounts and synthetic GICs are valued on the basis of valuation furnished by approved independent pricing sources. The fair value of the wrappers for the GICs are determined by taking the difference between the actual wrap fee of the contract and the price at which the wrapper would issue an identical contract under current market conditions.  That change in fees is applied to the year-end book value of the contract to determine the wrapper contract’s fair value.

The Stable Value Fund invests in traditional GICs, synthetic GICs and separate account GICs.  Traditional GICs are comprised of assets held in the issuing company’s general account and are backed by the full faith and credit of the issuer. For synthetic GICs, the Master Trust owns the underlying investments, whereas for the separate account GICs, the Master Trust receives title to the annuity contract, but not the direct title to the assets in the separate account.Synthetic and separate account GICs are backed by fixed income assets. The underlying investments held within the synthetic GICs are comprised of DCMC sponsored GEM Trusts and a PIMCO managed separate account fixed income portfolio and a DCMC managed Futures Overlay account.  The GEM Trusts are commingled fixed income portfolios managed by DCMC and additional investment managers hired by DCMC that invest in high quality fixed income securities across the short, intermediate and core sectors.  The underlying investments wrapped within the separate account contracts are managed by third party fixed income managers and include securities diversified across the broad fixed income market, such as, but not limited to, corporate bonds, mortgage related securities, government bonds, asset-backed securities, cash, cash equivalents, and certain non-leveraged derivatives. The DCMC managed Futures Overlay account is used to reduce the duration of the DCMC Stable Value Global Wrap Tier-5 contracts and consequently of the stable value funds that participate in the contracts.  The overlay will be implemented either through a commingled account or separate accounts for each stable value fund.  The duration reduction will be achieved through short futures positions.  The overlay account will hold the short futures positions and cash or cash equivalents.  The account will not always be active; it will only be active when DCMC decides to provide protection to its funds against rising rates through duration reduction.

For traditional GICs, the insurer maintains the assets in a general account.  Regardless of the performance of the general account assets, a traditional GIC will provide a fixed rate of return as negotiated when the contract is purchased.  Synthetic GICs, backed by underlying assets, are designed to provide principal protection and accrued interest over a specified period of time (i.e., period of time before the crediting rate reset) through benefit-responsive wrapper contracts issued by a third party assuming that the underlying assets meet the requirements of the GIC.  Separate account GICs are investment contracts invested in insurance company separate accounts established for the sole benefit of Stable Value Fund participants. The synthetic and separate account GICS are wrapped by the financially responsible insurance company. The Master Trust participates in the underlying experience of the separate account via future periodic rate resets.

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Traditional GICs expose the Plan through the Stable Value Fund to direct credit risk associated with each contract issuer.  To mitigate this risk, effective June 2014, the investment guidelines were updated to prohibit DCMC from purchasing contracts from issuers with a credit rating lower than A1.  In addition, on an ongoing basis, the weighted average credit rating of all contracts must be A1 or higher at all times. Further, on an ongoing basis, at purchase, no single traditional GIC issuer may represent more than 10% of the total Stable Value Fund and no more than 30% of the Stable Value Fund may be invested in Traditional GICs at any time. For the year ended December 31, 2013, the investment guidelines prohibited DCMC from purchasing contracts with issuers with a credit rating lower than Aa3/AA. In addition, the weighted average credit credit of all contracts must have been A3/A- or higher at all times and no single traditional GIC issuer could represent more than 5% of the Stable Value Fund. Additionally, DCMC continually monitors the issuers of these investments through external credit rating agencies.  DCMC monitors credit rating history, downgrade/upgrade notifications, and analyst reports for all current and potential issuers.  There are no reserves against contract value for credit risk of the contract issuer or otherwise.

The crediting rates for synthetic and separate account GICs are reset periodically throughout the year and are based on the performance of the portfolio of assets underlying these contracts. Inputs used to determine the crediting rate include each contract’s portfolio market value of fixed income assets, current yield-to-maturity, duration (similar to weighted average life) and market value relative to contract value. All contracts have a guaranteed rate of at least 0% or higher with respect to determining interest rate resets.

The crediting interest rates on all investment contracts ranged from 0.01% to 3.73% for the year ended December 31, 2014 and from 0.01% to 5.83% for the year ended December 31, 2013.  The weighted average credited interest rate of return of the investment contracts based on the interest rate credited to participants was 1.99% and 2.50% for the years ended December 31, 2014 and 2013, respectively.  The weighted average yield of the investment contracts based on the actual earnings of underlying assets in the Master Trust was 2.10% and 2.33% for the years ended December 31, 2014 and 2013, respectively.

 Participants may ordinarily direct the withdrawal or transfer of all or a portion of their investment at contract value for plan permitted benefit payments. Certain events may limit the ability of the Plan to transact at contract value with the issuer. Such events include the following: (i) amendments to the Plan documents (including complete or partial Plan termination or merger with another plan); (ii) changes to the Plan’s prohibition on competing investment options or deletion of equity wash provisions; (iii) bankruptcy of the Plan sponsor or other Plan sponsor events (i.e. divestitures or spin-offs of a subsidiary) which cause a significant withdrawal from the Plan or (iv) the failure of the Master Trust to qualify for exemption from federal income taxes or any required prohibited transaction exemption under ERISA. The Plan Administrator does not believe that the occurrence of any such value event, which would limit the Plan’s ability to transact at contract value, is probable.

Based on certain events specified in fully benefit-responsive investment contracts, both the Plan/Master Trust and issuers of such investment contracts are permitted to terminate the investment contracts. If applicable, such terminations can occur prior to the scheduled maturity date.

Examples of termination events that permit issuers to terminate investment contracts include the following:

• The Plan Sponsor’s receipt of a final determination notice from the Internal Revenue Service (“IRS”) that the Plan does not qualify under Section 401(a) of the IRC.

• The Master Trust ceases to be exempt from federal income taxation under Section 501(a) of the IRC.

• The Plan/Master Trust or its representative breaches material obligations under the investment contract such as a failure to satisfy its fee payment obligations.

• The Plan/Master Trust or its representative makes a material misrepresentation.

• The Plan/Master Trust makes a material amendment to the Plan/Master Trust and/or the amendment adversely impacts the issuer.

• The Plan/Master Trust, without the issuer’s consent, attempts to assign its interest in the investment contract.

• The balance of the contract value is zero or immaterial.

• Mutual consent.

• The termination event is not cured within a reasonable time period, i.e., 30 days.

For synthetic and separate account GICs, additional termination events include the following:

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• The investment manager of the underlying securities is replaced without the prior written consent by the issuer.

• The underlying securities are managed in a way that does not comply with the investment guidelines.

At termination, the contract value is adjusted to reflect a discounted value based on surrender charges or other penalties for GICs.

If the issuer of a synthetic or separate account GIC chooses to terminate the contract, assuming no breach of contract by the contract holder, the issuer is contractually obligated to deliver to the contract holder either book value or market value, whichever is greater at the time of termination, less any unpaid fees or charges. If the contract holder chooses to terminate the contract, they can choose to receive a cash value payout equal to the market value of the assets, or, if the market value is less than the book value, they can choose to enter into a wind-down phase designed to immunize the difference between market and book values over a time period agreed upon by both parties. The contract holder can choose to replace the contract issuer with a new issuer at any time, provided that all involved parties agree to the terms of transition.

Financial Instruments with Off-Balance-Sheet Risk in the Master Trust

In accordance with the investment strategy of the managed accounts, the Master Trust’s investment managers execute transactions in various financial instruments that may give rise to varying degrees of off-balance-sheet market and credit risk. These instruments can be executed on an exchange or negotiated in the over-the-counter market. These financial instruments include futures, forward settlement contracts, swap and option contracts.

Swap contracts include interest rate swap contracts which involve an agreement to exchange periodic interest payment streams (typically fixed vs. variable) calculated on an agreed upon periodic interest rate multiplied by a predetermined notional principal amount.

The Master Trust invests in financial futures contracts solely for the purpose of hedging its existing portfolio securities, or securities that the Master Trust intends to purchase, against fluctuations in fair value caused by changes in prevailing market interest rates. Upon entering into a financial futures contract, the Master Trust is required to pledge to the broker an amount of cash, U.S. government securities, or other assets equal to a certain percentage of the contract amount (initial margin deposit). Subsequent payments, known as variation margin, are made or received by the Master Trust each day, depending on the daily fluctuations in the fair value of the underlying security. The Master Trust recognizes a gain or loss equal to the daily variation margin. If market conditions move unexpectedly, the Master Trust may not achieve the anticipated benefits of the financial futures contracts and may realize a loss. The use of futures transactions involves the risk of imperfect correlation in movements in the price of futures contracts, interest rates, and the underlying hedged assets.

Market risk arises from the potential for changes in value of financial instruments resulting from fluctuations in interest and foreign exchange rates and in prices of debt and equity securities. The gross notional (or contractual) amounts used to express the volume of these transactions do not necessarily represent the amounts potentially subject to market risk. In many cases, these financial instruments serve to reduce, rather than increase, the Master Trust’s exposure to losses from market or other risks. In addition, the measurement of market risk is meaningful only when all related and offsetting transactions are identified. The Master Trust’s investment managers generally limit the Master Trust’s market risk by holding or purchasing offsetting positions.

As a writer of option contracts, the Master Trust receives a premium to become obligated to buy or sell financial instruments for a period of time at the holder’s option. During this period, the Master Trust bears the risk of an unfavorable change in the market value of the financial instrument underlying the option, but has no credit risk, as the counterparty has no performance obligation to the Master Trust once it has paid its cash premium.

The Master Trust is subject to credit risk of counterparty nonperformance on derivative contracts in a gain position, except for written options, which obligate the Master Trust to perform and do not give rise to any counterparty credit risk.

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The following presents the Master Trust’s net assets at December 31, 2014 and 2013:

	2014			2013
Assets:
Investments, at fair value:
Common stocks	$	1,812,391,877		$	1,687,664,312
Preferred stocks	3,693,202			6,279,983
Fixed income securities	95,382,946			76,977,994
Mutual funds	95,006,769			101,257,451
CCT's	3,086,954,708			2,409,055,908
Investment contracts	5,093,249,016			5,282,523,462
Short term investments	35,696,010			27,366,332
Total investments	10,222,374,528			9,591,125,442
Cash	228,059			256,159
Receivables for securities sold	5,158,300			3,287,129
Unrealized gain on foreign exchange contracts	870,828			—
Accrued income	3,641,262			2,750,296
Other assets	40,213			30,955
Total assets	10,232,313,190			9,597,449,981
Liabilities:
Payables for securities purchased	134,876,176			12,350,730
Unrealized loss on foreign exchange contracts	—			435,101
Accrued expenses and other liabilities	5,440,999			6,596,623
Total liabilities	140,317,175			19,382,454
Master Trust net assets, at fair value	10,091,996,015			9,578,067,527
Adjustment from fair value to contract value for fully benefit-responsive investment contracts	(99,117,405		)	(57,745,778		)
Master Trust net assets	$	9,992,878,610		$	9,520,321,749

11

The following presents the net investment gain for the Master Trust for the year ended December 31, 2014:

	2014
Change in net appreciation (depreciation) in fair value of investments:
Investments, at fair value:
Common stocks	$	89,825,661
Preferred stocks	(1,476,017		)
Mutual funds	(1,881,200		)
Fixed income securities	3,214,918
CCT's	237,209,940
Other	(9,155		)
Short term investments	(123,564		)
Net gain on swap agreements	13,533
Net gain on foreign exchange contracts	2,942,274
Net loss on futures contracts	(373,165		)
Net increase from investments	329,343,225
Investment income (expense):
Interest income	110,183,109
Dividend income	28,680,840
Administrative expenses	(14,643,081		)
Net investment gain	$	453,564,093

Investments of the Master Trust that represent 5% or more of the Master Trust assets as of December 31, 2014 and 2013 were as follows:

	2014		2013
Underlying Assets of Synthetic GICs:
GEM Trust Opportunistic 3	$	626,943,970	*
ING Life Insurance & Annuity Co.	504,636,885		*
Transamerica Stable Value Solutions	504,636,885		*
Separate Account GICs:
Prudential Retirement & Annuity Co.	$	1,262,449,312	$	1,234,796,631
Massachusetts Mutual Life Ins Co.	*		516,721,353
Metropolitan Life Insurance Co.	666,894,864		653,315,956
CCT:
Northern Trust Collective S&P 500 Equity Index Fund	970,778,874		731,498,416

______________________________________

* Investment holdings did not meet the 5% threshold.

12

NOTE 5—FAIR VALUE MEASUREMENTS

Accounting Standards Codification 820, Fair Value Measurements and Disclosures, provides a framework for measuring fair value. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value, as follows: Level 1, which refers to securities valued using unadjusted quoted prices from active markets for identical assets; Level 2, which refers to securities not traded on an active market but for which observable market inputs are readily available; and Level 3, which refers to securities valued based on significant unobservable inputs. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

Fair value calculations may not be indicative of net realizable value or reflective of future fair values. Furthermore, although the Plan believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

The estimated value of the insurance company separate accounts and synthetic contracts is net asset value, exclusive of the adjustment to contract value. The insurance company separate accounts and synthetic contracts are considered Level 2. The use of net asset value as fair value is deemed appropriate as the separate account GICs do not have finite lives, unfunded commitments relating to these types of investments, or significant restrictions or redemptions.

13

The following table sets forth by level, within the fair value hierarchy, the Plan’s and the Master Trust’s assets and liabilities at fair value as of December 31, 2014:

	Investments at Fair Value as of December 31, 2014
	Level 1		Level 2		Level 3		Total
Plan’s investments, excluding interest in Master Trust:
Common stocks	$	5,300,328	$	—	$	—	$	5,300,328
Mutual funds1	708,047		—		—		708,047
Total Plan’s investments	$	6,008,375	$	—	$	—	$	6,008,375
Master Trust’s investments:
Common stocks:
International common stocks	$	434,585,942	$	—	$	—	$	434,585,942
Large-cap domestic common stocks	710,835,858		—		—		710,835,858
Mid-cap domestic common stocks	508,763,805		—		—		508,763,805
Small-cap domestic common stocks	158,206,272		—		—		158,206,272
Total common stocks	1,812,391,877		—		—		1,812,391,877
Investment contracts:
Separate account GICs	—		3,062,767,163		—		3,062,767,163
Traditional GICs	—		303,640,061		—		303,640,061
Wrapper contracts	—		422,963		—		422,963
Underlying assets on synthetic GICs:					—
Pooled separate account	—		326,527,655		—		326,527,655
Commingled funds	—		1,399,891,174		—		1,399,891,174
Total investment contracts	—		5,093,249,016		—		5,093,249,016
Preferred stocks	3,693,202		—		—		3,693,202
Fixed income securities	—		95,382,946		—		95,382,946
Mutual funds	95,006,769		—		—		95,006,769
CCT's	—		3,086,954,708		—		3,086,954,708
Short term investments	—		35,696,010		—		35,696,010
Total Master Trust investment assets	1,911,091,848		8,311,282,680		—		10,222,374,528
Other financial instruments2	—		885,910		—		885,910
Total Master Trust assets	$	1,911,091,848	$	8,312,168,590	$	—	$	10,223,260,438

 ______________________________________

¹    Mutual funds include the participant-directed brokerage account.

²Other financial instruments include forwards, futures, options and swaps.

14

The following table sets forth by level, within the fair value hierarchy, the Plan’s and the Master Trust’s assets and liabilities at fair value as of December 31, 2013:

	Investments at Fair Value as of December 31, 2013
	Level 1		Level 2			Level 3		Total
Plan’s investments, excluding interest in Master Trust:
Common stocks	$	4,866,540	$	—		$	—	$	4,866,540
Mutual funds1	873,679		—			—		873,679
Total Plan’s investments	$	5,740,219	$	—		$	—	$	5,740,219
Master Trust’s investments:
Common stocks:
International common stocks	$	443,425,821	$	—		$	—	$	443,425,821
Large-cap domestic common stocks	629,543,723		—			—		629,543,723
Mid-cap domestic common stocks	473,880,029		—			—		473,880,029
Small-cap domestic common stocks	140,814,739		—			—		140,814,739
Total common stocks	1,687,664,312		—			—		1,687,664,312
Investment contracts:
Separate account GICs	—		3,103,601,994			—		3,103,601,994
Traditional GICs	—		424,776,891			—		424,776,891
Wrapper contracts	—		432,575			—		432,575
Underlying assets on synthetic GICs:						—
Pooled separate account	—		370,941,112			—		370,941,112
Commingled funds	—		1,382,770,890			—		1,382,770,890
Total investment contracts	—		5,282,523,462			—		5,282,523,462
Preferred stocks	6,279,983		—			—		6,279,983
Fixed income securities	—		76,977,994			—		76,977,994
Mutual funds	101,257,451		—			—		101,257,451
CCT's	—		2,409,055,908			—		2,409,055,908
Short term investments	—		27,366,332			—		27,366,332
Total Master Trust investment assets	1,795,201,746		7,795,923,696			—		9,591,125,442
Other financial instruments2	—		(406,583		)	—		(406,583		)
Total Master Trust assets	$	1,795,201,746	$	7,795,517,113		$	—	$	9,590,718,859

 ______________________________________

¹    Mutual funds include the participant-directed brokerage account.

²    Other financial instruments include forwards, futures, and options.

For the years ended December 31, 2014 and 2013, there were no significant transfers in or out of Levels 1, 2 or 3.

15

NOTE 6 — CONOCOPHILLIPS STOCK

In 1998, DuPont announced that the Board of Directors had approved a plan to divest DuPont's 100% owned petroleum business, Conoco, Inc., which was completed through a tax-free split-off in August 1999. DuPont exchanged its shares of Conoco, Inc. Class B common stock for shares of DuPont common stock. Plan participants had the option to exchange shares of DuPont common stock, which were held in their participant accounts. For each share of DuPont common stock exchanged, the participants received an appropriate number of shares of Conoco Class B common stock. Accordingly, the Conoco Class B Stock Fund was created as an investment fund of the Plan. No additional shares of Conoco Class B common stock may be purchased by Plan participants through payroll deductions, fund transfers or the reinvestment of dividends. Dividends earned on Conoco Class B common stock are distributed pro-rata to the investment options in participants' accounts based upon their current investment elections. In August 2002, the Conoco Stock Fund became ConocoPhillips Stock Fund. In April 2012, Phillips 66 separated from ConocoPhillips and as a result, the ConocoPhillips Stock Fund was split into the ConocoPhillips Stock Fund and Phillips 66 Stock Fund.

The balance on the Statements of Net Assets Available for Benefits within Common stocks related to the ConocoPhillips stock and Phillips 66 Stock Fund was $223,250 and $117,976 at December 31, 2014 and $304,776 and $165,404 at December 31, 2013, respectively.

NOTE 7 — RELATED PARTY TRANSACTIONS

Certain Plan investments are shares of mutual funds and units of CCT's managed by Northern Trust and Bank of America, which also serve as trustees. In addition, the Plan offers DuPont common stock as an investment option. At December 31, 2014, the Plan held 67,069 shares of DuPont common stock valued at $4,959,102.  At December 31, 2013, the Plan held 67,668 shares of DuPont common stock valued at $4,396,360.  During the year ended December 31, 2014, the Plan purchased and sold $1,273,494 and $1,304,046 of DuPont common stock, respectively, and received dividends of $126,443. Additionally, during the year ended December 31, 2014, DuPont common stock appreciated in value by $593,917. Transactions in these investments qualify as party-in-interest transactions which are exempt from the prohibited transaction rules of ERISA.

The Stable Value Fund assets held by the Plan are managed by DCMC, under the terms of an investment management agreement between DCMC and the Company. DCMC hires additional investment managers to manage a portion of the fixed income assets backing synthetic GICs allocated to the Stable Value Fund. The amount of DCMC fees accrued and paid by the Stable Value Fund was approximately $585,482 for the year ended December 31, 2014.  DCMC fee amounts relate to the Master Trust and are allocated to the plans within the Master Trust based on each plan’s proportional interest in the Stable Value Fund. These fees qualify as party-in-interest transactions, which are exempt from prohibited transaction rules of ERISA.

NOTE 8—PLAN TERMINATION

Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA.  In the event of Plan termination, participants would become 100% vested in the retirement savings contributions.

NOTE 9 — TAX STATUS

The Plan is a qualified plan pursuant to Section 401(a) of the Internal Revenue Code ("IRC") and the related trust is exempt from federal taxation under Section 501(a) of the IRC. A favorable tax determination letter from the IRS dated July 12, 2012, covering the Plan and amendments through January 14, 2010, has been received by the Plan. The Plan administrator believes that the Plan is designed and is currently operated in accordance with the applicable requirements of the IRC. Therefore, no provision for income taxes has been included in the Plan's financial statements.

GAAP requires plan management to evaluate tax positions taken by the plan and recognize a tax liability if the plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. The Plan administrator has analyzed the tax positions taken by the plan and has concluded that as of December 31, 2014, there are no uncertain positions taken, or expected to be taken, that would require recognition of a liability or disclosure in the financial statements. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress. The Plan Administrator believes the Plan is no longer subject to initiation of any new income tax examinations for years prior to 2011.

16

NOTE 10 — RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500

Amounts allocated to withdrawing participants are recorded on the Form 5500 for benefit claims that have been processed and approved for payment prior to December 31^st but are not yet paid as of that date. The following is a reconciliation of net assets available for benefits per the financial statements at December 31, 2014 and 2013 to the Form 5500:

	2014			2013
Net assets available for benefits per the financial statements	$	60,029,468		$	58,483,061
Amounts allocated to withdrawing participants	(120,567		)	(20,435		)
Loan balances considered deemed distributions	(25,520		)	(61,288		)
Adjustment from fair value to contract value for fully benefit-responsive investment contracts held in Master Trust	466,037			294,789
Net assets available for benefits per the Form 5500	$	60,349,418		$	58,696,127

The following is a reconciliation of notes receivable from participants per the financial statements for the year ended December 31, 2014 to total income per the Form 5500:

	2014			2013
Notes receivable from participants per the financial statements	$	2,237,693		$	2,025,205
Loan balances considered deemed distributions	(25,520		)	(61,288		)
Notes receivable from participants per the Form 5500	$	2,212,173		$	1,963,917

The following is a reconciliation of total additions per the financial statements for the year ended December 31, 2014 to total income per the Form 5500:

	2014
Total additions per the financial statements	$	10,555,601
2014 adjustment from fair value to contract value for fully benefit-responsive investment contracts held in Master Trust	466,037
2013 adjustment from fair value to contract value for fully benefit-responsive investment contracts held in Master Trust	(294,789		)
Total income per the Form 5500	$	10,726,849

The following is a reconciliation of total deductions per the financial statements to total expenses per the Form 5500 for the year ended December 31, 2014:

	2014
Total deductions per the financial statements	$	9,009,194
Amounts allocated to withdrawing participants at December 31, 2014	120,567
Amounts allocated to withdrawing participants at December 31, 2013	(20,435		)
Current year cumulative deemed distributions	25,520
Prior year cumulative deemed distributions	(61,288		)
Total expenses per the Form 5500	$	9,073,558

17

NOTE 11 — SUBSEQUENT EVENTS

In October 2013, DuPont announced it intends to separate its Performance Chemicals segment through a U.S. tax-free spin-off to shareholders, subject to customary closing conditions. The new public company will be named the Chemours Company ("Chemours"). DuPont expects to complete the separation on July 1, 2015, subject to final approval from DuPont's Board of Directors. As a result of the separation, participants will receive one share of common stock of Chemours for every five shares of DuPont common stock they hold in the Plan on June 30, 2015.

As a result of the Chemours separation, Sentinel will exit the Master Trust on June 30, 2015.

18

THRIFT AND SAVINGS PLAN FOR EMPLOYEES OF SENTINEL TRANSPORTATION, LLC

SUPPLEMENTAL SCHEDULE

SCHEDULE OF ASSETS (HELD AT END OF YEAR) AS OF DECEMBER 31, 2014

ATTACHMENT TO FORM 5500, SCHEDULE H, PART IV, LINE I

	(b)	(c)	(d)	(e)
(a)	Identity of Issue	Description of Investment	Cost	Current Value
*	DuPont Common Stock	Common stock	**	$	4,959,102
	ConocoPhillips Stock	Common stock	**	223,250
	Phillips 66 Stock	Common stock	**	117,976
*	Plan interest in the DuPont and Related Companies Defined Contribution Plan Master Trust	Master Trust	**	49,742,469
*	Participant-directed Brokerage Account	Brokerage account	**	708,047
*	Notes receivable from participants	4.25% - 9.25% - Maturing from January 2015 - May 2024	**	2,212,173
	Total Assets Held At End of Year			$	57,963,017

 ______________________________________

*	Party-in-interest
**	Cost not required for participant-directed investments

19

EXHIBIT INDEX

Exhibit Number	Description
23.1	Consent of Independent Registered Public Accounting Firm

20

SIGNATURE

The Plan. Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

Thrift and Savings Plan for Employees of

Sentinel Transportation, LLC

/s/ Marilyn Shaw

Marilyn Shaw

VP, Human Resources

June 22, 2015

21

EX-23.1

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-129494) of E. I. du Pont de Nemours and Company of our report dated June 22, 2015 relating to the financial statements and supplemental schedule of the Thrift and Savings Plan for Employees of Sentinel Transportation, LLC, which appears in this Form 11-K.

/s/ PricewaterhouseCoopers LLP

Philadelphia, Pennsylvania

June 22, 2015