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Reportable Segments (Tables)

9 Months Ended

Sep. 30, 2025

Segment Reporting [Abstract]

Schedule of Differences between Reported Amount and Reporting Currency Denominated Amount

Constant-currency rates used are as follows and are applied to the respective periods presented and to all foreign exchange exposures during the period, even though the Company may be less than 100% hedged:

Currency

Japanese yen

South Korean won

Chinese yuan

New Taiwan dollar

Mexican peso

Euro

2024 Rate

¥107

₩1,175

¥6.7

NT$31

MX$20

€0.81

2025 Rate

¥120

₩1,250

¥6.9

NT$31

MX$21

€0.88

Schedule of Segment Reporting Information, by Segment

The following provides selected segment information as described above:

Segment information (in millions):

			Optical Communications						Display						Specialty Materials						Automotive						Life Sciences						Hemlock and Emerging Growth Businesses						Total
Three months ended September 30, 2025
Segment net sales			$	1,652					$	939					$	621					$	454					$	242					$	364					$	4,272
Less:
Research, development and     engineering expenses (1)			75						23						71						38						6						20						233
Depreciation (2)			66						105						37						40						15						41						304
Other segment items (3)			1,131						495						371						290						200						300						2,787
Income tax provision (4)			85						66						29						18						5						4						207
Segment net income (loss)			$	295					$	250					$	113					$	68					$	16					$	(1)					$	741
Capital expenditures			$	129					$	95					$	55					$	29					$	5					$	49					$	362
Three months ended September 30, 2024
Segment net sales			$	1,246					$	1,015					$	548					$	430					$	244					$	250					$	3,733
Less:
Research, development and     engineering expenses (1)			71						29						69						43						5						31						248
Depreciation (2)			69						110						39						44						17						29						308
Other segment items (3)			882						516						348						278						203						173						2,400
Income tax provision (4)			49						75						20						14						4						5						167
Segment net income			$	175					$	285					$	72					$	51					$	15					$	12					$	610
Capital expenditures			$	49					$	45					$	13					$	20					$	2					$	55					$	184
Nine months ended September 30, 2025
Segment net sales			$	4,573					$	2,742					$	1,667					$	1,354					$	726					$	934					$	11,996
Less:
Research, development and     engineering expenses (1)			228						72						206						108						19						69						702
Depreciation (2)			200						315						111						122						46						109						903
Other segment items (3)			3,187						1,426						1,011						852						601						781						7,858
Income tax provision (4)			215						193						71						57						13						2						551
Segment net income (loss)			$	743					$	736					$	268					$	215					$	47					$	(27)					$	1,982
Capital expenditures			$	313					$	206					$	131					$	71					$	11					$	192					$	924
Nine months ended September 30, 2024
Segment net sales			$	3,289					$	2,901					$	1,503					$	1,400					$	729					$	773					$	10,595
Less:
Research, development and     engineering expenses (1)			202						83						186						122						17						76						686
Depreciation (2)			201						336						115						131						51						84						918
Other segment items (3)			2,350						1,542						975						893						604						565						6,929
Income tax provision (4)			118						196						48						54						12						16						444
Segment net income			$	418					$	744					$	179					$	200					$	45					$	32					$	1,618
Capital expenditures			$	133					$	179					$	73					$	41					$	10					$	147					$	583

(1)Research, development and engineering expenses include direct project spending that is identifiable to a segment.

(2)Depreciation expense for Corning’s reportable segments includes an allocation of depreciation of corporate property not specifically identifiable to a segment.

(3)Other segment items for each reportable segment primarily include the cost of materials, salaries, wages and benefits, including variable compensation, and selling, general and administrative expenses.

(4)Income tax provision reflects a tax rate of 21%.

Segment information, continued (in millions):

			Optical Communications						Display						Specialty Materials						Automotive						Life Sciences						Hemlock and Emerging Growth Businesses						Total
September 30, 2025
Investment in affiliated companies,    at equity			$	4					$	100					$	17																	$	179					$	300
Segment assets (1)			$	3,958					$	6,750					$	2,643					$	2,443					$	799					$	2,927					$	19,520
December 31, 2024
Investment in affiliated companies,    at equity			$	4					$	90					$	15																	$	181					$	290
Segment assets (1)			$	3,506					$	6,596					$	2,489					$	2,366					$	800					$	1,869					$	17,626

(1)Segment assets include inventory, accounts receivable, property, plant and equipment, net of accumulated depreciation and associated equity companies.

Schedule of Reconciliation of Revenue from Segments to Consolidated

The following table presents a reconciliation of net sales of reportable segments to consolidated net sales (in millions):

			Three months ended September 30,												Nine months ended September 30,
			2025						2024						2025						2024
Net sales of reportable segments			$	3,908					$	3,483					$	11,062					$	9,822
Net sales of Hemlock and Emerging Growth Businesses			364						250						934						773
Impact of constant-currency reporting (1)			(172)						(342)						(582)						(978)
Consolidated net sales			$	4,100					$	3,391					$	11,414					$	9,617

(1)Amount primarily represents the impact of foreign currency adjustments in the Display segment.

Schedule of Reconciliation of Net Income (Loss) from Segments to Consolidated

The following table presents a reconciliation of net income of reportable segments to consolidated net income (loss) (in millions):

			Three months ended September 30,												Nine months ended September 30,
			2025						2024						2025						2024
Net income of reportable segments			$	742					$	598					$	2,009					$	1,586
Net (loss) income of Hemlock and Emerging Growth Businesses			(1)						12						(27)						32
Unallocated amounts:
Impact of constant-currency reporting			(157)						(258)						(496)						(751)
Translated earnings contract gain (loss), net			33						(157)						63						(91)
Translation gain (loss) on foreign denominated debt, net			4						(107)						(66)						28
Litigation, regulatory and other legal matters			(50)						(16)						(57)						(11)
Research, development, and engineering expenses (1)			(47)						(39)						(124)						(121)
Amortization of intangibles			(27)						(31)						(83)						(91)
Interest expense, net			(62)						(63)						(197)						(189)
Income tax benefit			127						164						332						320
Severance charges									(43)						(2)						(46)
Capacity optimization and other charges and credits (2)			(16)						(91)						(8)						(217)
Other corporate items			(76)						(64)						(189)						(197)
Net income (loss)			$	470					$	(95)					$	1,155					$	252

(1)Amount does not include research, development and engineering expense related to severance changes.

(2)Amount includes charges associated with impairment losses, asset write-offs, accelerated depreciation, disposal costs and inventory write-downs. Refer to Note 2 (Restructuring, Impairment and Other Charges and Credits) for additional information.

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