Merck & Co., Inc. (MRK) › Operating IncomeMerck & Co., Inc. (MRK) — Operating IncomeAnnual figures by fiscal year, from SEC filings.No annual Operating Income data is available for this company yet.Other metrics: RevenueCost of RevenueGross ProfitNet IncomeEPS (Diluted)Total AssetsTotal LiabilitiesShareholders' EquityCash & EquivalentsOperating Cash FlowCapital ExpendituresShares OutstandingDividends Per Share