Table of Contents Index to Financial Statements Utilizing the fair value hierarchy described in  Note 7 , the Company’s fair value measurement of pension plan assets at December 31, 2017 was as follows: (in millions) Total Quoted Prices in Active Markets for Identical Assets  (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured within fair value hierarchy Equity securities: U.S. large cap growth equity  (1) $ 7  $ 7  $ – $ – U.S. large cap value equity  (2) 8  8  – – U.S. small cap equity  (3) 3  3  – – Non-U.S. equity  (4) 30  30  – – Emerging markets equity  (5) 5  5  – – Fixed income  (6) 27  27  – – Cash and cash equivalents 3  3  – – Total measured within fair value hierarchy $ 83 $ 83 $ – $ – Measured at net asset value  (8) Equity securities: U.S. large cap core equity  (9) 18  Total measured at net asset value $ 18 Total plan assets at fair value $ 101 The Company’s pension plan assets that are classified as Level 1 are the investments comprised of either cash or investments in open-ended mutual funds which produce a daily net asset value that is validated with a sufficient level of observable activity to support classification of the fair value measurement as Level 1. Due to the Company’s implementation of Accounting Standards Update No. 2015-07, assets measured using net asset value as a practical expedient have not been classified in the fair value hierarchy. No concentration of risk arising within or across categories of plan assets exists due to any significant investments in a single entity, industry, country or investment fund. The Southwestern Energy Company 2013 Incentive Plan was adopted in February 2013, approved by stockholders in May 2013 and amended and restated per stockholders’ approval in May 2016 and further amended in May 2017 (the “2013 Plan”). The 2013 Plan provides for the compensation of officers, key employees and eligible non-employee directors of the Company and its subsidiaries. The 2013 Plan provides for grants of options, stock appreciation rights, and shares of restricted stock and restricted stock units to employees, officers and directors that, in the aggregate, do not exceed 52,700,000 shares. The types of incentives that may be awarded are comprehensive and are intended to enable the Company’s Board of Directors to structure the most appropriate incentives and to address changes in income tax laws which may be enacted over the term of the 2013 Plan. (13) STOCK-BASED COMPENSATION 113 (1) Mutual fund that seeks to invest in a diversified portfolio of stocks with price appreciation growth opportunities. (2) Mutual fund that seeks to invest in a diversified portfolio of stocks that will increase in value over the long-term as well as provide current income. (3) Mutual fund that seeks to invest in a diversified portfolio of stocks with small market capitalizations. (4) Mutual funds that invest primarily in equity securities of companies domiciled outside of the United States, primarily in developed markets. (5) An institutional fund that invests primarily in the equity securities of companies domiciled in emerging markets. (6) Institutional funds that seek an investment return that approximates, as closely as practicable, before expenses, the performance of the Barclays U.S. Intermediate Credit Bond Index over the long term and the Barclays Long U.S. Corporate Bond Index over the long-term. (7) Includes approximately $21 million for anticipated lump sum distributions resulting from the Fayetteville Shale sale in December 2018. (8) Plan assets for which fair value was measured using net asset value as a practical expedient. (9) An institutional fund that seeks to replicate the performance of the S&P 500 Index before fees.