Revenues were $2.7 billion in the fourth quarter, $9.5 billion in 2021Operating margin was 4.5% in the fourth quarter, 5.4% in 2021Segment operating margin1 was 6.0% in the fourth quarter, 7.2% in 2021Diluted earnings per share was $2.99 in the fourth quarter, $13.50 in 2021Pension adjusted diluted earnings per share1 was $2.84 in the fourth quarter, $13.03 in 2021 NEWPORT NEWS, Va., Feb. 10, 2022 (GLOBE NEWSWIRE) — Huntington Ingalls Industries (NYSE:HII) reported fourth quarter 2021 revenues


