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## Benefit Obligations, Fair Value of Plan Assets and Funded Status 

The following tables provide a reconciliation of the changes in the pension and retiree medical and other postretirement benefits obligations, fair value of plan assets and a statement of funded status as of December 31, 2019 and 2018: 

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$^{(1)}$ The 2019 and 2018 pension actuarial (gain) loss primarily relates to changes in American’s weighted average discount rate and mortality assumption and, in 2018, changes to American’s retirement rate assumptions. 

$^{(2)}$ The 2019 retiree medical and other postretirement benefits actuarial loss primarily relates to changes in American’s weighted average discount rate assumption and plan experience adjustments. 

The 2018 retiree medical and other postretirement benefits actuarial gain primarily relates to changes in American’s weighted average discount rate, medical trend and per capita claims assumptions. 

$^{(3)}$ During 2019, American contributed $1.2 billion to its defined benefit pension plans, including supplemental contributions of $444 million and a $780 million minimum required contribution. During 2018, American contributed $472 million to its defined benefit pension plans, including supplemental contributions of $433 million and a $39 million minimum required contribution. 

