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## NOTES TO CONSOLIDATED FINANCIAL STATEMENTS OF AMERICAN AIRLINES, INC. 

As of December 31, 2019, there was $108 million of unrecognized compensation cost related to RSUs. These costs are expected to be recognized over a weighted average period of one year. The total fair value of RSUs vested during the years ended December 31, 2019, 2018 and 2017 was $68 million, $91 million and $123 million, respectively. 

## 14. Valuation and Qualifying Accounts (in millions) 

<img src='content_image/1044503.jpg'>

## 15. Quarterly Financial Data (Unaudited) 

Unaudited summarized financial data by quarter for 2019 and 2018 (in millions): 

<img src='content_image/1044502.jpg'>

American’s fourth quarter 2019 results include $108 million of total pre-tax net special items that principally included $85 million of merger integration expenses and $39 million of fleet restructuring expenses, offset in part by $42 million of mark-to-market net unrealized gains associated with certain equity and other investments. 

American’s fourth quarter 2018 results include $190 million of total pre-tax net special items that principally included $94 million of fleet restructuring expenses, $81 million of merger integration expenses, $37 million of severance costs associated with reductions of management and support staff team members, $22 million of mark-to-market net unrealized losses associated with certain equity investments, offset in part by a $37 million net credit resulting from mark-to-market adjustments on bankruptcy obligations. 

