Filing Flows › Corning (GLW) › Q3 2025
Corning (GLW) Q3 2025 earnings results (third quarter 2025)
10-Q filed Oct 31, 2025
Corning (GLW) reported revenue of $4.1B for the third quarter 2025 (Q3 2025), +21% from a year earlier and +6% from the quarter before. Operating margin was 14.4%, net earnings $430M (10.5% of revenue).
Corning, Q3 2025: revenue $4.1B (+21% year over year), operating margin 14.4%, net earnings $430M, operating cash flow $784M. The chart follows the revenue to costs, profit and cash.
| Q3 2025 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $4.1B | +6% | +21% |
| Gross profit | $1.5B | +9% | +34% |
| Operating profit | $589M | +3% | +95% |
| Net earnings | $430M | -8% | — |
| Operating cash flow | $784M | +11% | +12% |
| Free cash flow | $450M | +12% | -7% |
What changed
Revenue was $4.1B in Q3 2025, up 21% year over year and up 6% from the previous quarter. Optical communications products was the largest line at 40% of revenue. Optical communications products added $0.41B year over year (up 33%), 57% of the total change.
Gross margin was 37.1%, up 3.5 points from a year earlier. Operating profit was $0.59B, a 14.4% margin (up 5.5 points year over year). Of the extra revenue versus a year earlier, 40% reached operating profit, above the 9% margin then. Operating expenses grew 11% against revenue growth of 21%. The fastest-growing cost line was SG&A (+22%). Net earnings were $0.43B. The effective tax rate was 14.5%.
Operating cash flow was $0.78B (up 12% year over year), 167% of net income including minority interests. Non-cash charges added back $0.34B of depreciation and amortization and $0.10B of share-based compensation. Working capital and other items used $0.12B. Capital expenditures of $0.33B left free cash flow of $0.45B.
Questions
What was Corning's revenue in the third quarter 2025?
Corning (GLW) reported revenue of $4.1B for the third quarter 2025 (Q3 2025), +21% from a year earlier and +6% from the quarter before.
Was Corning profitable in the third quarter 2025?
Operating profit was $589M (14.4% of revenue) and net earnings $430M.
Source: Corning 10-Q on SEC EDGAR.