Lumentum Records $1.01B Revenue but $7.2B GAAP Loss in Q4

Lumentum posted Q4 FY2026 revenue of $1.01 billion — a fiscal-year high — alongside a $7.2 billion GAAP net loss, per its August 11 release. GAAP includes all charges, non-operating and otherwise. The prior quarter showed $144.2 million in GAAP net income. A loss this large against record sales likely reflects a goodwill or asset impairment. Full 10-K filing is pending.