Lumentum Holdings Inc.
Close on Nov 2, 2026Market cap $61.39BP/E –Yield –
Lumentum Non-GAAP Research & Development (R&D) Expense by Quarter
Non-GAAP Research & Development (R&D) Expense ($M)
Lumentum Non-GAAP Research & Development (R&D) Expense: $87.5M in Q4 FY26, up 29.4% from a year earlier. That is the highest of the 39 quarters on record here.
Where the Q4 FY26 figure comes from
“|| Research and development on non-GAAP basis | $ | 87.5 | $ | 78.4 | $ | 67.6 | $ | 304.8 | $ | 256.0”
Source: SEC Form 8-K EX-99.1 (FY2026Q4 Earnings Release, filed 2026-08-11, 0001628280-26-055726) ↗
Reported in SEC Form 8-K EX-99.1.
Quarterly history
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Cite this data
StockData. (2026). Lumentum Non-GAAP Research & Development (R&D) Expense ($M), quarterly Q2 FY17–Q4 FY26 [Data set]. Compiled from Lumentum SEC filings and investor materials. https://stockdatahq.com/stocks/lite/kpis/nongaap-rd
See every metric in the Lumentum KPI table. Data updated Nov 2, 2026.