Groowe Groowe BETA / Newsroom
⏱ News is delayed by 15 minutes. Sign in for real-time access. Sign in

Form 8-K

sec.gov

8-K — CORNING INC /NY

Accession: 0000024741-26-000198

Filed: 2026-04-28

Period: 2026-04-28

CIK: 0000024741

SIC: 3357 (DRAWING AND INSULATING NONFERROUS WIRE)

Item: Results of Operations and Financial Condition

Item: Regulation FD Disclosure

Documents

8-K — glw-20260428.htm (Primary)

EX-99.1 (glw-20260328xex991xq12026.htm)

EX-99.2 (glw-xsegmentrecastxq12026x.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: glw-20260428.htm · Sequence: 1

glw-20260428

0000024741CORNING INC /NYfalse00000247412026-04-282026-04-280000024741us-gaap:CommonStockMember2026-04-282026-04-280000024741glw:A3.875NotesDue2026Member2026-04-282026-04-280000024741glw:A4.125NotesDue2031Member2026-04-282026-04-28

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report: (Date of earliest event reported) April 28, 2026

CORNING INCORPORATED

(Exact name of registrant as specified in its charter)

Commission file number: 1-3247

New York 16-0393470

(State or other jurisdiction of incorporation)  (I.R.S. Employer Identification No.)

One Riverfront Plaza, Corning, New York

14831

(Address of principal executive offices)   (Zip Code)

607-974-9000

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class   Trading Symbol(s)   Name of each exchange on which registered

Common Stock, $0.50 par value per share   GLW   New York Stock Exchange

3.875% Notes due 2026   GLW26   New York Stock Exchange

4.125% Notes due 2031   GLW31   New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 ((§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company      o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.       o

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 2.02. Results of Operations and Financial Condition

The Corning Incorporated press release dated April 28, 2026 regarding its financial results for the first-quarter ended March 31, 2026 is attached hereto as Exhibit 99.1.

The comparative segment information included within Exhibit 99.2 has been recast to conform to the changes in our segment reporting and as detailed within Item 7.01 in this Current Report on Form 8-K.

In accordance with General Instruction B.2 of Form 8-K, the information in this Current Report on Form 8-K, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 7.01 Regulation FD Disclosure

Unaudited financial information recast for changes in segments.

Effective in the first quarter of fiscal 2026, the Company revised its segment structure. This revision corresponds with changes in how our businesses are managed, which align with how our chief operating decision maker (“CODM”) reviews performance and allocates resources. As a result, the Company began managing its Display and Specialty Materials businesses as a single operating segment, referred to as Glass Innovations, and its Hemlock Semiconductor Group, solar wafer, and solar module businesses as a single operating segment, referred to as Solar. In addition, the Company's Life Sciences business does not meet the quantitative threshold for separate reporting and therefore is no longer reported as a separate segment and is included together with all other businesses that do not meet the quantitative threshold for separate reporting within Life Sciences and Emerging Growth Businesses. Optical Communications and Automotive remain unchanged and continue to be reported as separate reportable segments.

As a result of the above changes, the Company has determined it has four reportable segments for financial reporting purposes, organized primarily based on product offerings, as follows:

•Optical Communications – manufactures carrier network and enterprise network components for the telecommunications industry; the carrier network group consists primarily of products and solutions for optical-based communications infrastructure for services such as video, data and voice communications; the enterprise network group consists primarily of optical-based communication networks, including hyperscale data centers, sold to businesses, governments and individuals for their own use.

•Glass Innovations – utilizes proprietary glassmaking, forming, strengthening, finishing, and optical fabrication processes, including large-scale flat-glass melting and precision finishing technologies, to manufacture glass substrates for LCD and OLED displays and specialty glass, glass-ceramic, fluoride crystal, and other precision materials and components for consumer electronics, semiconductor, aerospace and defense, telecommunications, commercial, and industrial applications.

•Automotive – manufactures ceramic substrates and filter products for emissions control systems in mobile applications; as well as technical glass and optic products and solutions for the interior and exterior of vehicles.

•Solar – manufactures silicon materials and products for semiconductor and solar applications, including hyper-pure polysilicon produced by our Hemlock Semiconductor business, solar wafers, and solar modules. The segment's products serve customers across the semiconductor and solar markets globally from a manufacturing footprint in the United States.

All other businesses that do not meet the quantitative threshold for separate reporting have been grouped as Life Sciences and Emerging Growth Businesses.

These changes reflect the Company’s internal management structure and align with the information regularly reviewed by the CODM.

Because the operating results of the new segments for prior years will not be reported until the Form 10-Q is filed for each quarter of 2026, and the Form 10-K for 2026, management wants to provide information in advance to investors to enhance understanding of operating performance of the Company’s adjusted segments. Therefore, Exhibit 99.2 to this Current Report on Form 8-K presents selected quarterly and annual unaudited financial information recast for changes in segments for the years ended December 31, 2025 and 2024 to supplement financial disclosures included in the Company’s previously filed reports and to recast previously disclosed segment financial information under the new reporting structure.

The recast of the previous segment financial information is provided voluntarily to investors and is not required by accounting principles generally accepted in the United States of America (“GAAP”); it is not a restatement of previous financial statements and does not affect the Company’s GAAP consolidated reported net income, earnings per share, operating income, or total assets or liabilities for any of the previously reported periods. This information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01. Financial Statements and Exhibits

(d) Exhibit

99.1

Press Release dated April 28, 2026, issued by Corning Incorporated

99.2

Unaudited Financial Information Recast for Changes in Segments

104 Cover Page Interactive File (the cover page tags are embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

CORNING INCORPORATED

Registrant

Date: April 28, 2026

By /s/ Stefan Becker

Stefan Becker

Senior Vice President and Corporate Controller

EX-99.1

EX-99.1

Filename: glw-20260328xex991xq12026.htm · Sequence: 2

Document

Exhibit 99.1

News Release

FOR RELEASE — April 28, 2026

Corning Announces Strong First-Quarter 2026 Financial Results (1)

CORNING, N.Y. — Corning Incorporated (NYSE: GLW) today announced its first-quarter 2026 results and provided its outlook for second-quarter 2026.

News Summary:

•First-quarter core sales grew 18% to $4.35 billion, and core EPS grew 30% to $0.70 versus Q1-2025.

•Robust demand for Gen AI products and the ramp of new solar products drove Q1 growth.

•Optical Communications sales grew 36%, and Solar sales were up 80% year over year.

•Two additional hyperscale customers entered into large, long-term agreements with Corning.

•Deals are similar in size and duration to the recently announced multiyear, up-to-$6 billion agreement with Meta.

•Agreements highlight customers’ commitment to develop, innovate, and manufacture the critical technologies that power next-generation AI data centers in the United States.

•Corning plans to upgrade and extend its Springboard plan through 2030 and introduce a new Market-Access Platform at the company’s May 6 NYC investor event.

•Optical Communications’ new Photonics Market-Access Platform will serve Gen AI OEM customers.

•For the second quarter, management expects to grow core sales about 14% year over year to approximately $4.6 billion and core EPS about 25% year over year to a range of $0.73-$0.77.

•Second-quarter guidance includes an extended maintenance shutdown at Corning’s solar wafer facility, including the transition to a permanent power system while the company repairs, upgrades, and modifies production equipment to increase throughput in future quarters. This will cause an additional $30 million of expense in Q2 versus Q1 and is included in guidance.

(1) First-quarter GAAP results: Sales were $4.14 billion, gross margin was 36.9%, operating margin was 15.4%, EPS was $0.43, and operating cash flow was $362 million.

Wendell P. Weeks, chairman, chief executive officer, and president, said, “Our strong first-quarter results continued the powerful trajectory of our Springboard plan. Versus Springboard’s Q4-2023 starting point, we grew core sales 33% and core EPS 79%, and we expanded core operating margin and core ROIC by 390 basis points and 470 basis points, respectively. Additionally, we finalized two more hyperscaler deals similar in size and duration to our recently announced multiyear, up-to-$6 billion agreement with Meta. In total, we have powerful momentum across our Market-Access Platforms.”

1

Corning Reports First-Quarter 2026 Financial Results

Page 2

Weeks continued, “Based on strong demand for our innovations, we plan to upgrade and extend our Springboard plan through 2030 at our May 6 investor event. We will introduce our new Photonics Market-Access Platform and explain the underlying technical and demand trends driving our Gen AI product development.”

Ed Schlesinger, executive vice president and chief financial officer, said, “Our first-quarter results show continued excellent performance on our Springboard plan. We delivered our eighth consecutive quarter of year‑over‑year growth, with core sales up 18% led by Optical Communications and our new Solar business, which was up 80%. Our solar ramp continues with our polysilicon business performing above our 20% corporate operating margin target in the first quarter, and our module business is on track to cross over in the second quarter. We continued to enhance the company's financial profile, growing core EPS 30% year over year, while expanding core operating margin 220 basis points, core gross margin 120 basis points, and core ROIC 190 basis points.”

Schlesinger continued, “In the second quarter, we expect to grow core sales about 14% year over year to approximately $4.6 billion and to grow core EPS about 25% year over year to a range of $0.73 to $0.77. We have built into our second-quarter forecast an extended maintenance shutdown at our solar wafer facility, including the transition to a permanent power system while we repair, upgrade, and modify our production equipment to increase throughput in future quarters. This will cause an additional $30 million of expense versus the first quarter.”

First-Quarter 2026 Financial Highlights:

•GAAP sales were $4.14 billion, up 20% year over year. Core sales were $4.35 billion, up 18% year over year.

•GAAP EPS was $0.43, up 139% year over year. Core EPS was $0.70, up 30% year over year. Differences between GAAP and core EPS include constant currency adjustments as well as primarily non-cash items, including acquisition-related costs; discrete tax items and other tax-related adjustments; and restructuring, impairment, and other charges and credits.

•GAAP gross margin was 36.9%. Core gross margin expanded 120 basis points to 39.1%.

•GAAP operating margin was 15.4%. Core operating margin was 20.2%.

•GAAP operating cash flow was $362 million, and adjusted free cash flow was $188 million.

Second-Quarter 2026 Outlook:

•For the second quarter, management expects to grow core sales about 14% year over year to approximately $4.6 billion and core EPS about 25% year over year to a range of $0.73-$0.77.

•Second-quarter guidance includes an extended maintenance shutdown at Corning’s solar wafer facility, including the transition to a permanent power system while the company repairs, upgrades, and modifies production equipment to increase throughput in future quarters. This will cause an additional $30 million of expense in Q2 versus Q1 and is included in guidance.

2

Corning Reports First-Quarter 2026 Financial Results

Page 3

First-Quarter 2026 Results and Comparisons

(In millions, except per-share amounts)

Results (GAAP)

Q1 2026

Q4 2025

Q1 2025

Q/Q Y/Y

Net Sales $4,144  $4,215  $3,452  (2 %) 20 %

Net Income (1)

$371  $540  $157  (31 %) 136 %

Diluted EPS $0.43  $0.62  $0.18  (31 %) 139 %

(1)Represents GAAP net income attributable to Corning Incorporated.

Core Results (Non-GAAP)(1)

Q1 2026

Q4 2025

Q1 2025

Q/Q Y/Y

Core Sales $4,345  $4,412  $3,679  (2 %) 18 %

Core Net Income $612  $624  $467  (2 %) 31 %

Core EPS $0.70  $0.72  $0.54  (3 %) 30 %

(1)Core performance measures are non-GAAP financial measures. The reconciliation between GAAP and non-GAAP measures is provided in the tables following this news release as well as on the company’s website.

3

Corning Reports First-Quarter 2026 Financial Results

Page 4

First-Quarter 2026 Segment Results

(In millions)

The first-quarter results below are prepared on a basis consistent with Corning’s segment reporting as presented in the company’s consolidated financial statements.

Effective in the first quarter of 2026, Corning revised its segment reporting structure to align with its current operating and management structure. As a result, the company created a Glass Innovations segment, combining its former Display and Specialty Materials segments. Corning also created a Solar segment, which includes Hemlock Semiconductor Group and the company’s solar wafer and module manufacturing businesses. Optical Communications and Automotive remain unchanged. All other results will be grouped as Life Sciences and Emerging Growth Businesses. Prior-period results have been recast to conform to the current presentation.

Optical Communications

Q1 2026

Q4 2025

Q1 2025

Q/Q Y/Y

Net Sales $1,846  $1,701  $1,355  9 % 36 %

Net Income $387  $305  $201  27 % 93 %

Glass Innovations

Q1 2026

Q4 2025

Q1 2025

Q/Q Y/Y

Net Sales $1,420  $1,499  $1,406  (5 %) 1 %

Net Income $324  $356  $317  (9 %) 2 %

Automotive

Q1 2026

Q4 2025

Q1 2025

Q/Q Y/Y

Net Sales $437  $440  $440  (1 %) (1 %)

Net Income $70  $63  $68  11 % 3 %

Solar

Q1 2026

Q4 2025

Q1 2025

Q/Q Y/Y

Net Sales $370  $475  $206  (22 %) 80 %

Net Income $7  $30  $27  (77 %) (74 %)

Life Sciences and Emerging Growth Businesses

Q1 2026

Q4 2025

Q1 2025

Q/Q Y/Y

Net Sales $272  $297  $272  (8 %) — %

Net Loss ($24) ($15) ($30) (60 %) 20 %

4

Corning Reports First-Quarter 2026 Financial Results

Page 5

Upcoming Investor Events

On Wednesday, May 6, Corning Incorporated will host investors and analysts at the New York Stock Exchange, starting at 9 a.m. ET. Corning will also attend the J.P. Morgan 2026 Global Technology, Media, and Communications Conference on May 19. In addition, the company will schedule management visits to investor offices in select cities. Visit the company’s Investor Relations website for up-to-date information.

First-Quarter Conference Call Information

The company will host its first-quarter conference call on Tuesday, April 28, at 8:30 a.m. ET. To participate, individuals may preregister here prior to the start of the call. Once the required fields are completed, click “Register.” A telephone number and PIN will be auto generated and will pop up on screen. Participants will have the choice to “Dial In” or have the system “Call Me.” A confirmation email will also be sent with specific dial-in information. To listen to a live audio webcast of the call, go to the company’s Investor Relations events page and follow the instructions.

Presentation of Information in this News Release

This news release includes non-GAAP financial measures. Non-GAAP financial measures are not in accordance with, or an alternative to, GAAP. Corning’s non-GAAP financial measures exclude the impact of items that are driven by general economic conditions and events that do not reflect the underlying fundamentals and trends in the company’s operations. The company believes presenting non-GAAP financial measures assists in analyzing financial performance without the impact of items that may obscure trends in the company’s underlying performance. Definitions of these non-GAAP financial measures and reconciliations of these non-GAAP financial measures to the most directly comparable GAAP financial measures can be found on the company’s website by going to the Investor Relations page and clicking “Quarterly Results” under the “Financials and Filings” tab. These reconciliations also accompany this news release.

With respect to the outlook for future periods, it is not possible to provide reconciliations for these non-GAAP measures because management does not forecast the movement of foreign currencies against the U.S. dollar, or other items that do not reflect ongoing operations, nor does it forecast items that have not yet occurred or are out of management’s control. As a result, management is unable to provide outlook information on a GAAP basis.

Caution Concerning Forward-Looking Statements

The statements contained in this release and related comments by management that are not historical facts or information and contain words such as “will,” “believe,” “anticipate,” “expect,” “intend,” “plan,” “seek,” “see,” “would,” “target,” “estimate,” “forecast” or similar expressions are forward-looking statements. These forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and include estimates and assumptions related to economic, competitive and legislative developments. Such statements relate to future events that by their nature address matters that are, to different degrees, uncertain. These forward-looking statements relate to, among other things, the Company’s Springboard plan, projected financial and operating performance, anticipated sales opportunities, long-term growth strategy, expected capital deployment, innovation and commercialization plans, and anticipated impacts of customer agreements.

Although the company believes that these forward-looking statements are based upon reasonable assumptions regarding, among other things, current estimates and forecasts, general economic conditions, its knowledge of its business and key performance indicators that impact the company, there can be no assurance that these forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. The company undertakes no obligation to update forward-looking statements if circumstances or management’s estimates or opinions should change except as required by applicable securities laws.

5

Corning Reports First-Quarter 2026 Financial Results

Page 6

Some of the risks, uncertainties and other factors that could cause actual results to differ materially from those expressed in or implied by the forward-looking statements include, but are not limited to: global economic trends, competition and geopolitical risks, or an escalation of sanctions, tariffs or other trade tensions between the U.S. and other countries, and related impacts on our businesses’ global supply chains and strategies; changes in macroeconomic and market conditions and market volatility, including developments and volatility arising from health crisis events, inflation, interest rates, the value of securities and other financial assets, precious metals, oil, natural gas, raw materials and other commodity prices and exchange rates (particularly between the U.S. dollar and the Japanese yen, South Korean won, Chinese yuan, New Taiwan dollar, Mexican peso and euro), decreases or sudden increases of consumer demand, and the impact of such changes and volatility on our financial position and businesses; the availability of or adverse changes relating to government grants, tax credits or other government incentives; the duration and severity of health crisis events, such as an epidemic or pandemic, and its impact across our businesses on demand, personnel, operations, our global supply chains and stock price; possible disruption in commercial activities or our supply chain due to terrorist activity, cyber-attack, armed conflict, political or financial instability, natural disasters, international trade disputes or major health concerns; loss of intellectual property due to theft, cyber-attack, or disruption to our information technology infrastructure; ability to enforce patents and protect intellectual property and trade secrets; disruption to Corning’s, our suppliers’ and manufacturers’ supply chain, equipment, facilities, IT systems or operations; product demand and industry capacity; competitive products and pricing; availability and costs of critical components, materials, equipment, natural resources and utilities; new product development and commercialization; our solar business development, including manufacturing facility construction, ramp, and operations, and the achievement of solar revenue and profitability targets; order activity and demand from major customers; the amount and timing of our cash flows and earnings and other conditions, which may affect our ability to pay our quarterly dividend at the planned level or to repurchase shares at planned levels; the amount and timing of any future dividends; the effects of acquisitions, dispositions and other similar transactions; the effect of regulatory and legal developments; ability to pace capital spending to anticipated levels of customer demand; our ability to increase margins through implementation of operational changes, pricing actions and cost reduction measures; rate of technology change; adverse litigation; product and component performance issues; retention of key personnel; customer ability to maintain profitable operations and obtain financing to fund ongoing operations and manufacturing expansions and pay receivables when due; loss of significant customers; changes in tax laws, regulations and international tax standards; the impacts of audits by taxing authorities; the potential impact of legislation, government regulations, and other government action and investigations; and other risks detailed in Corning’s SEC filings.

For a complete listing of risks and other factors, please reference the risk factors and forward-looking statements described in our annual reports on Form 10-K and quarterly reports on Form 10-Q.

Web Disclosure

In accordance with guidance provided by the SEC regarding the use of company websites and social media channels to disclose material information, Corning Incorporated (“Corning”) wishes to notify investors, media, and other interested parties that it uses its website (https://www.corning.com/worldwide/en/about-us/news-events.html) to publish important information about the company, including information that may be deemed material to investors, or supplemental to information contained in this or other press releases. The list of websites and social media channels that the company uses may be updated on Corning’s media and website from time to time. Corning encourages investors, media, and other interested parties to review the information Corning may publish through its website and social media channels as described above, in addition to the company’s SEC filings, press releases, conference calls, and webcasts.

6

Corning Reports First-Quarter 2026 Financial Results

Page 7

About Corning Incorporated

Corning (www.corning.com) is one of the world’s leading innovators in materials science, with a 175-year track record of life-changing inventions. Corning applies its unparalleled expertise in glass science, ceramic science, and optical physics, along with its deep manufacturing and engineering capabilities to develop category-defining products that transform industries and enhance people’s lives. Corning succeeds through sustained investment in RD&E, a unique combination of material and process innovation, and deep, trust-based relationships with customers who are global leaders in their industries. Corning’s capabilities are versatile and synergistic, which allows the company to evolve to meet changing market needs, while also helping its customers capture new opportunities in dynamic industries. Today, Corning’s markets include optical communications, mobile consumer electronics, display, automotive, solar, semiconductors, and life sciences.

Media Relations Contact:

Gabrielle Bailey

(607) 684-4557

baileygr@corning.com

Investor Relations Contact:

Christopher Keenan

(607) 974-6716

keenanct@corning.com

7

Consolidated Statements of Income Corning Incorporated and Subsidiary Companies

(Unaudited; in millions, except per share amounts)

Three months ended

March 31,

2026 2025

Net sales $ 4,144  $ 3,452

Cost of sales 2,616  2,238

Gross margin 1,528  1,214

Operating expenses:

Selling, general and administrative expenses 588  471

Research, development and engineering expenses 278  270

Amortization of purchased intangibles 23  28

Operating income 639  445

Interest income 9  12

Interest expense (92) (82)

Translated earnings contract loss, net (16) (101)

Other expense, net (11) (34)

Income before income taxes 529  240

Provision for income taxes (121) (55)

Net income 408  185

Net income attributable to non-controlling interest (37) (28)

Net income attributable to Corning Incorporated $ 371  $ 157

Earnings per common share available to common shareholders:

Basic $ 0.43  $ 0.18

Diluted $ 0.43  $ 0.18

8

Consolidated Balance Sheets Corning Incorporated and Subsidiary Companies

(Unaudited; in millions, except share and per share amounts)

March 31,

2026 December 31,

2025

Assets

Current assets:

Cash and cash equivalents $ 1,755  $ 1,526

Trade accounts receivable, net of doubtful accounts 2,676  2,779

Inventories 3,279  3,077

Other current assets 1,816  1,554

Total current assets 9,526  8,936

Property, plant and equipment, net of accumulated depreciation 14,785  14,825

Goodwill 2,479  2,489

Other intangible assets, net 632  657

Deferred income taxes 1,569  1,515

Other assets 2,262  2,554

Total Assets $ 31,253  $ 30,976

Liabilities and Equity

Current liabilities:

Current portion of long-term debt and short-term borrowings $ 1,255  $ 804

Accounts payable 2,251  1,979

Other accrued liabilities 2,410  2,845

Total current liabilities 5,916  5,628

Long-term debt 7,718  7,630

Postretirement benefits other than pensions 311  314

Other liabilities 4,959  5,097

Total liabilities 18,904  18,669

Commitments and contingencies

Shareholders’ equity:

Common stock – Par value $0.50 per share; Shares authorized 3.8 billion;

Shares issued: 1.9 billion and 1.8 billion

925  924

Additional paid-in capital – common stock 17,704  17,580

Retained earnings 16,680  16,551

Treasury stock, at cost; Shares held: 993 million and 992 million

(21,206) (21,143)

Accumulated other comprehensive loss (2,291) (2,105)

Total Corning Incorporated shareholders’ equity 11,812  11,807

Non-controlling interest 537  500

Total equity 12,349  12,307

Total Liabilities and Equity $ 31,253  $ 30,976

9

Consolidated Statements of Cash Flows Corning Incorporated and Subsidiary Companies

(Unaudited; in millions)

Three months ended

March 31,

2026 2025

Cash Flows from Operating Activities:

Net income $ 408  $ 185

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation 334  291

Amortization of purchased intangibles 23  28

Share-based compensation expense 115  54

Translation (gain) loss on foreign denominated debt, net (6) 43

Deferred tax benefit (62) (50)

Translated earnings contract loss, net 16  101

Changes in assets and liabilities:

Trade accounts receivable 12  10

Inventories (232) (146)

Other current assets (56) (30)

Accounts payable and other current liabilities (80) (253)

Customer deposits and government incentives (171) (16)

Deferred income (38) (29)

Other, net 99  (37)

Net cash provided by operating activities 362  151

Cash Flows from Investing Activities:

Capital expenditures (332) (208)

Proceeds from CHIPS Act incentives 8

Realized gains on translated earnings contracts and other 150  56

Other, net (29) (13)

Net cash used in investing activities (203) (165)

Cash Flows from Financing Activities:

Repayments of debt (13) (47)

Proceeds from issuance of debt and short-term borrowings 427

Proceeds from cross currency swap   24

Payments of employee withholding tax on stock awards (63) (29)

Proceeds from exercise of stock options 14  11

Purchases of common stock for treasury   (100)

Dividends paid (244) (242)

Other, net (62) (20)

Net cash provided by (used in) financing activities 59  (403)

Effect of exchange rates on cash (5) 8

Net increase (decrease) in cash and cash equivalents and restricted cash 213  (409)

Cash and cash equivalents and restricted cash at beginning of period 1,566  1,768

Cash and cash equivalents and restricted cash at end of period $ 1,779  $ 1,359

Restricted cash included in other current assets 24

Cash and cash equivalents at end of year $ 1,755  $ 1,359

10

Corning Incorporated and Subsidiary Companies

GAAP Earnings per Common Share

(Unaudited; in millions, except per share amounts)

The following table sets forth the computation of basic and diluted earnings per common share:

Three months ended

March 31,

2026 2025

Net income attributable to Corning Incorporated $ 371  $ 157

Weighted-average common shares outstanding – basic 857  855

Effect of dilutive securities:

Stock options and other awards 14  11

Weighted-average common shares outstanding - diluted 871  866

Basic earnings per common share $ 0.43  $ 0.18

Diluted earnings per common share $ 0.43  $ 0.18

Core Earnings per Share

(Unaudited; in millions, except per share amounts)

The following table sets forth the computation of core earnings per share:

Three months ended

March 31,

2026 2025

Core net income $ 612  $ 467

Weighted-average common shares outstanding - basic 857  855

Effect of dilutive securities:

Stock options and other awards 14  11

Weighted-average common shares outstanding - diluted 871  866

Core earnings per share $ 0.70  $ 0.54

11

CORE PERFORMANCE MEASURES

In managing the Company and assessing our financial performance, we adjust certain measures included in our consolidated financial statements to exclude specific items to arrive at measures that are not calculated in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and exclude specific items that are non-recurring, related to foreign exchange volatility, or unrelated to continuing operations. These measures are our core performance measures.

Management uses core performance measures, along with GAAP financial measures, to make financial and operational decisions and certain of these measures also form the basis of our compensation program metrics. Management believes that our core performance measures are indicative of our core operating performance and provide investors with greater visibility into how management evaluates our results and trends and makes business decisions. These measures are not, and should not be viewed as a substitute for, GAAP reporting measures.

Items that are excluded from certain core performance calculations include: the impact of translating foreign denominated debt, the impact of the translated earnings contracts, acquisition-related costs, certain discrete tax items and other tax-related adjustments, restructuring, impairment and other charges and credits, certain litigation, regulatory and other legal matters, pension mark-to-market adjustments and other items which do not reflect the ongoing operating results of the Company.

In addition, because a significant portion of our revenues and expenses are denominated in currencies other than the U.S. dollar, management believes it is important to understand the impact on sales and net income of translating these currencies into U.S. dollars. Therefore, management utilizes constant-currency reporting for the Optical Communications, Glass Innovations and Automotive segments to exclude the impact from the Japanese yen, South Korean won, Chinese yuan, New Taiwan dollar, Mexican peso and euro, as applicable to the segment. The most significant constant-currency adjustment relates to the Japanese yen exposure within the Glass Innovations segment. The constant-currency rates established for our core performance measures are long-term management-determined rates, which are closely aligned with our hedging instrument rates. These hedging instruments may include, but are not limited to, foreign exchange forward, cross-currency swaps or option contracts and foreign-denominated debt. For details of the rates used, refer to the footnotes to the “Reconciliation of Non-GAAP Measures” section. We believe that the use of constant-currency reporting allows management to understand our results without the volatility of currency fluctuations, analyze underlying trends in the businesses and establish operational goals and forecasts.

For a reconciliation of non-GAAP performance measures to their most directly comparable GAAP financial measure, refer to “Reconciliation of Non-GAAP Measures.” With respect to the outlook for future periods, it is not possible to provide reconciliations for these non-GAAP measures because management does not forecast the movement of foreign currencies against the U.S. dollar, or other items that do not reflect ongoing operations, nor does it forecast items that have not yet occurred or are out of management’s control. As a result, management is unable to provide outlook information on a GAAP basis.

12

Reconciliation of Non-GAAP Measures Corning Incorporated and Subsidiary Companies

(Unaudited; in millions, except per share amounts)

Three months ended March 31, 2026

Net sales Income before income taxes Net income attributable to Corning Incorporated Effective tax rate (a)(b) Per Share

As reported - GAAP $ 4,144  $ 529  $ 371  22.9 % $ 0.43

Constant-currency adjustment (1)

201 180 135    0.15

Translation gain on foreign denominated debt, net (2)

(6) (5)   (0.01)

Translated earnings contract loss, net (3)

16 12    0.01

Acquisition-related costs (4)

45 34    0.04

Discrete tax items and other tax-related adjustments (5)

30    0.03

Restructuring, impairment and other charges and credits (6)

44 42    0.05

Pension mark-to-market adjustment (7)

(1) (1)   (0.00)

Loss on investments (8)

6 6    0.01

Gain on sale of assets (9)

(16) (12) (0.01)

Core performance measures $ 4,345  $ 797  $ 612  18.5 % $ 0.70

(a)Based upon statutory tax rates in the specific jurisdiction for each event.

(b)The calculation of the effective tax rate (“ETR”) for GAAP and Core excludes net income attributable to non-controlling interest (“NCI”) of approximately $37 million and $38 million, respectively.

Three months ended March 31, 2025

Net sales Income before income taxes Net income attributable to Corning Incorporated Effective tax rate (a)(b) Per Share

As reported - GAAP $ 3,452  $ 240  $ 157  22.9 % $ 0.18

Constant-currency adjustment (1)

227 180 168    0.19

Translation loss on foreign denominated debt, net (2)

43 33    0.04

Translated earnings contract loss, net (3)

101 77    0.09

Acquisition-related costs (4)

30 22    0.03

Discrete tax items and other tax-related adjustments (5)

(7)   (0.01)

Restructuring, impairment and other charges and credits (6)

(7) (5)   (0.01)

Pension mark-to-market adjustment (7)

(1)     0.00

Loss on investments (8)

5 5    0.01

Loss on sale of assets (9)

4 3  0.00

Loss on sale of business (10)

11 7  0.01

Litigation, regulatory and other legal matters (11)

10 7  0.01

Core performance measures $ 3,679  $ 616  $ 467  19.5 % $ 0.54

(a)Based upon statutory tax rates in the specific jurisdiction for each event.

(b)The calculation of the ETR for GAAP and Core excludes net income attributable to NCI of approximately $28 million and $29 million, respectively.

Refer to “Items Adjusted from GAAP Measures” for the descriptions of the footnoted reconciling items.

13

Reconciliation of Non-GAAP Measures Corning Incorporated and Subsidiary Companies

(Unaudited; in millions)

Three months ended March 31, 2026

Gross

margin Gross

margin % Selling, general and administrative expenses Research, development and engineering expenses Operating

income Operating

margin %

As reported - GAAP $ 1,528  36.9 % $ 588  $ 278  $ 639  15.4 %

Constant-currency adjustment (1)

177 1    176

Acquisition-related costs (4)

(19)   42

Restructuring, impairment and other charges and credits (6)

11 (25)   36

Pension mark-to-market adjustment (7)

1    (1)

Gain on sale of assets (9)

(16)     (16)

Core performance measures $ 1,700  39.1 % $ 546  $ 278  $ 876  20.2 %

Three months ended March 31, 2025

Gross

margin Gross

margin % Selling, general and administrative expenses Research, development and engineering expenses Operating

income Operating

margin %

As reported - GAAP $ 1,214  35.2 % $ 471  $ 270  $ 445  12.9 %

Constant-currency adjustment (1)

180  3    177

Acquisition-related costs (4)

28

Restructuring, impairment and other charges and credits (6)

(3) (1)   (2)

Pension mark-to-market adjustment (7)

1  (1)

Loss on sale of assets (9)

4      4

Litigation, regulatory and other legal matters (11)

(10)   10

Core performance measures $ 1,395  37.9 % $ 463  $ 271  $ 661  18.0 %

Refer to “Items Adjusted from GAAP Measures” for the descriptions of the footnoted reconciling items.

14

Reconciliation of Non-GAAP Measures Corning Incorporated and Subsidiary Companies

(Unaudited; in millions)

Three months ended

March 31,

2026 2025

Cash flows from operating activities $ 362  $ 151

Realized gains on translated earnings contracts and other $ 150  $ 56

Adjusted cash flows from operating activities $ 512  $ 207

Less: Capital expenditures $ 332  $ 208

Plus: Proceeds from CHIPS Act incentives $ 8

Adjusted free cash flow $ 188  $ (1)

Core return on invested capital (“core ROIC”) is a non-GAAP measure used by management and can be used by investors to review our investment and capital allocation decisions. We define core ROIC as the after-tax core operating income, inclusive of core equity earnings from affiliated companies, as a percentage of invested capital, calculated as total equity plus total long-term debt. Core ROIC for the three months ended March 31, 2026 and 2025 is calculated by annualizing the after-tax return for the respective period.

Three months ended

March 31,

2026 2025

Core operating income (1)

$ 876  $ 661

Core equity earnings in affiliated companies (2)

$ 4  $ 2

Core operating income before interest and taxes $ 880  $ 663

Less: Income tax (3)

$ 163  $ 129

Core operating income tax adjusted $ 717  $ 534

Equity $ 12,349  $ 11,128

Debt $ 8,973  $ 7,237

Invested capital $ 21,322  $ 18,365

Core ROIC 13.5 % 11.6 %

(1)Refer to the reconciliation of operating income as reported in our GAAP results to core operating income within the “Reconciliation of non-GAAP measures.”

(2)Equity earnings in affiliated companies as reflected within other expense, net in the consolidated statements of income was income of $2 million and a loss of $1 million for the three months ended March 31, 2026 and March 31, 2025, respectively. The difference between equity earnings in affiliated companies as reported in our GAAP results and as reflected as a non-GAAP core performance measure is an adjustment for constant currency reporting, as described within “Core Performance Measures.”

(3)Income tax amounts are calculated based on the core effective tax rate of 18.5% and 19.5% for the three months ended March 31, 2026 and March 31, 2025, respectively.

15

Items Adjusted from GAAP Measures

Items adjusted from GAAP measures to arrive at core performance measures are as follows:

(1)Constant-currency adjustment: As a significant portion of revenues and expenses are denominated in currencies other than the U.S. dollar, management believes it is important to understand the impact on sales and net income of translating these currencies into U.S. dollars. The Company utilizes constant-currency reporting for Optical Communications, Glass Innovations and Automotive segments for the Japanese yen, South Korean won, Chinese yuan, New Taiwan dollar, Mexican peso and euro, as applicable to the segment. We believe that the use of constant-currency reporting allows management to understand our results without the volatility of currency fluctuation, analyze underlying trends in the businesses and establish operational goals and forecasts. For the three months ended March 31, 2026 and 2025, the constant-currency adjustment primarily relates to our Japanese yen exposure due to the difference in the average spot rate compared to our core rate.

The constant-currency rates established for our core performance measures are long-term management-determined rates, which are closely aligned with our hedging instrument rates. These hedging instruments may include, but are not limited to, foreign exchange forward or option contracts, cross-currency swaps and foreign-denominated debt.

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

Currency Japanese yen Korean won Chinese yuan New Taiwan dollar Mexican peso Euro

Rate ¥120 ₩1,250 ¥6.9 NT$31 MX$21 €0.88

(2)Translation of foreign denominated debt, net: Amount reflects the gain or loss on the translation of our yen-denominated and euro-denominated debt to U.S. dollars, net of gains or losses on related derivative instruments.

(3)Translated earnings contract, net: Amount reflects the impact of the realized and unrealized gains and losses on our derivative instruments used to hedge Japanese yen, South Korean won, Chinese yuan, New Taiwan dollar, Mexican peso and euro foreign currency exposure related to translated earnings.

(4)Acquisition-related costs: Amount reflects intangible amortization, inventory valuation adjustments, contingent consideration adjustments and external acquisition-related deal costs, as well as other transaction related costs.

(5)Discrete tax items and other tax-related adjustments: Amount reflects certain discrete period tax items such as changes in tax law, the impact of tax audits, changes in tax reserves, changes in deferred tax asset valuation allowances and stock compensation windfall or shortfall, as well as other tax-related adjustments.

(6)Restructuring, impairment and other charges and credits: Amount reflects certain restructuring, impairment losses and other charges and credits, as well as other expenses, including severance, accelerated depreciation, asset write-offs and facility repairs resulting from power outages, which are not related to ongoing operations.

(7)Pension mark-to-market adjustment: Amount primarily reflects defined benefit pension mark-to-market gains and losses, which arise from changes in actuarial assumptions and the difference between actual and expected returns on plan assets and discount rates.

(8)Loss on investments: Amount reflects the loss recognized on investments due to mark-to-market adjustments for the change in fair value or the disposition of an investment.

(9)Gain or loss on sale of assets: Amount represents the gain or loss recognized for the sale of assets, recorded in cost of sales, on the consolidated statements of income.

(10)Loss on sale of business: Amount reflects the loss recognized for the sale of a business, recorded in other expense, net, on the consolidated statements of income.

(11)Litigation, regulatory and other legal matters: Amount reflects developments in commercial litigation, intellectual property disputes, adjustments to our estimated liability for environmental-related items and other legal matters.

16

EX-99.2

EX-99.2

Filename: glw-xsegmentrecastxq12026x.htm · Sequence: 3

Document

Exhibit 99.2

Unaudited Financial Information Recast for Changes in the Segments

2025

(in millions) Q1 Q2 Q3 Q4 Total

Optical Communications (1)

Net Sales $ 1,355  $ 1,566  $ 1,652  $ 1,701  $ 6,274

Less:

Research, development and engineering expenses (2)

77  76  75  80  308

Depreciation (3)

65  69  66  71  271

Other segment items (4)

954  1,102  1,131  1,156  4,343

Income tax provision (5)

58  72  85  89  304

Segment net income $ 201  $ 247  $ 295  $ 305  $ 1,048

Glass Innovations

Net Sales $ 1,406  $ 1,443  $ 1,560  $ 1,499  $ 5,908

Less:

Research, development and engineering expenses (2)

92  92  94  96  374

Depreciation (3)

137  147  142  154  580

Other segment items (4)

776  795  866  800  3,237

Income tax provision (5)

84  85  95  93  357

Segment net income $ 317  $ 324  $ 363  $ 356  $ 1,360

Automotive (1)

Net Sales $ 440  $ 460  $ 454  $ 440  $ 1,794

Less:

Research, development and engineering expenses (2)

35  35  38  38  146

Depreciation (3)

41  41  40  41  163

Other segment items (4)

278  284  290  281  1,133

Income tax provision (5)

18  21  18  17  74

Segment net income $ 68  $ 79  $ 68  $ 63  $ 278

Solar

Net Sales $ 206  $ 231  $ 319  $ 475  $ 1,231

Less:

Research, development and engineering expenses (2)

2  4  2  2  10

Depreciation (3)

17  26  29  30  102

Other segment items (4)

149  196  244  400  989

Income tax provision (5)

11  3  14  13  41

Segment net income $ 27  $ 2  $ 30  $ 30  $ 89

Life Sciences and Emerging Growth Businesses

Net Sales $ 272  $ 345  $ 287  $ 297  $ 1,201

Less:

Research, development and engineering expenses (2)

30  26  24  27  107

Depreciation (3)

29  27  27  26  109

Other segment items (4)

252  285  256  264  1,057

Income tax (benefit) provision (5)

(9) 1  (5) (5) (18)

Segment net (loss) income $ (30) $ 6  $ (15) $ (15) $ (54)

(1) There were no changes to the historical financial information for this segment.

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

(3) Depreciation expense includes an allocation of depreciation of corporate property not specifically identifiable to a segment.

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

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

1

Unaudited Financial Information Recast for Changes in the Segments

2024

(in millions) Q1 Q2 Q3 Q4 Total

Optical Communications (1)

Net Sales $ 930  $ 1,113  $ 1,246  $ 1,368  $ 4,657

Less:

Research, development and engineering expenses (2)

65  66  71  72  274

Depreciation (3)

66  66  69  66  267

Other segment items (4)

671  797  882  980  3,330

Income tax provision (5)

28  41  49  56  174

Segment net income $ 100  $ 143  $ 175  $ 194  $ 612

Glass Innovations

Net Sales $ 1,326  $ 1,515  $ 1,563  $ 1,486  $ 5,890

Less:

Research, development and engineering expenses (2)

86  85  98  94  363

Depreciation (3)

152  150  149  148  599

Other segment items (4)

779  874  864  813  3,330

Income tax provision (5)

64  85  95  88  332

Segment net income $ 245  $ 321  $ 357  $ 343  $ 1,266

Automotive (1)

Net Sales $ 491  $ 479  $ 430  $ 446  $ 1,846

Less:

Research, development and engineering expenses (2)

38  41  43  41  163

Depreciation (3)

43  44  44  43  174

Other segment items (4)

311  304  278  285  1,178

Income tax provision (5)

21  19  14  16  70

Segment net income $ 78  $ 71  $ 51  $ 61  $ 261

Solar

Net Sales $ 216  $ 199  $ 194  $ 256  $ 865

Less:

Research, development and engineering expenses (2)

2  2  5  2  11

Depreciation (3)

16  16  17  16  65

Other segment items (4)

149  135  129  175  588

Income tax provision (5)

13  12  12  17  54

Segment net income $ 36  $ 34  $ 31  $ 46  $ 147

Life Sciences and Emerging Growth Businesses

Net Sales $ 295  $ 298  $ 300  $ 318  $ 1,211

Less:

Research, development and engineering expenses (2)

25  28  31  32  116

Depreciation (3)

28  29  29  28  114

Other segment items (4)

249  260  247  281  1,037

Income tax benefit (5)

(1) (5) (3) (5) (14)

Segment net loss $ (6) $ (14) $ (4) $ (18) $ (42)

(1) There were no changes to the historical financial information for this segment.

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

(3) Depreciation expense includes an allocation of depreciation of corporate property not specifically identifiable to a segment.

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

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

2

Unaudited Financial Information Recast for Changes in the Segments

(in millions) Optical

Communications Glass Innovations Automotive Solar Total Reportable Segments Life Sciences and Emerging Growth Businesses Total

For the year ended December 31, 2025

Investment in affiliated companies $ 5  $ 114  $ —  $ —  $ 119  $ 183  $ 302

Segment assets (1)

$ 4,029  $ 9,236  $ 2,395  $ 2,734  $ 18,394  $ 1,470  $ 19,864

Capital expenditures $ 459  $ 494  $ 76  $ 216  $ 1,245  $ 42  $ 1,287

For the year ended December 31, 2024

Investment in affiliated companies $ 4  $ 105  $ —  $ —  $ 109  $ 181  $ 290

Segment assets (1)

$ 3,506  $ 9,085  $ 2,366  $ 1,171  $ 16,128  $ 1,498  $ 17,626

Capital expenditures $ 193  $ 363  $ 65  $ 150  $ 771  $ 26  $ 797

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

Unaudited Financial Information Recast for Changes in the Segments

3

The following tables present a reconciliation of net sales of reportable segments to consolidated net sales and net income of reportable segments to consolidated net income (loss) (in millions):

2025

Q1 Q2 Q3 Q4 Total

Net sales of reportable segments $ 3,407  $ 3,700  $ 3,985  $ 4,115  $ 15,207

Net sales of Life Sciences and Emerging Growth Businesses 272  345  287  297  1,201

Impact of constant currency reporting (1)

(227) (183) (172) (197) (779)

Consolidated net sales $ 3,452  $ 3,862  $ 4,100  $ 4,215  $ 15,629

Net income of reportable segments $ 613  $ 652  $ 756  $ 754  $ 2,775

Net (loss) income of Life Sciences and Emerging Growth

Businesses (30) 6  (15) (15) (54)

Unallocated amounts (3)

(398) (158) (271) (152) (979)

Net income $ 185  $ 500  $ 470  $ 587  $ 1,742

2024

Q1 Q2 Q3 Q4 Total

Net sales of reportable segments $ 2,963  $ 3,306  $ 3,433  $ 3,556  $ 13,258

Net sales of Life Sciences and Emerging Growth Businesses 295  298  300  318  1,211

Impact of constant currency reporting (1)

(283) (353) (342) (331) (1,309)

Impairment of upfront fees to a customer (2)

(42) (42)

Consolidated net sales $ 2,975  $ 3,251  $ 3,391  $ 3,501  $ 13,118

Net income of reportable segments $ 459  $ 569  $ 614  $ 644  $ 2,286

Net loss of Life Sciences and Emerging Growth Businesses (6) (14) (4) (18) (42)

Unallocated amounts (3)

(228) (433) (705) (286) (1,652)

Net income (loss) $ 225  $ 122  $ (95) $ 340  $ 592

(1) This amount primarily represents the impact of foreign currency adjustments in the Glass Innovations segment.

(2) Amount represents non-cash charges to write-down upfront payments made to a customer.

(3)

Unallocated amounts have been combined into one number in this Exhibit. For reconciliation of all items, refer to Corning’s previously filed quarterly reports on Form 10-Q and annual report on Form 10-K.

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

December 31,

2025 2024

Total assets of reportable segments $ 18,394  $ 16,128

Total assets of Life Sciences and Emerging Growth Businesses 1,470  1,498

Unallocated amounts (1)

11,112  10,109

Total assets $ 30,976  $ 27,735

(1)

Unallocated amounts have been combined into one number in this Exhibit. For reconciliation of all items, refer to Corning’s previously filed annual report on Form 10-K.

4

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 9

v3.26.1

Cover

Apr. 28, 2026

Document Information [Line Items]

Document Type

8-K

Document Period End Date

Apr. 28, 2026

Registrant Name

CORNING INC /NY

Entity File Number

1-3247

Entity Incorporation, State or Country Code

NY

Entity Tax Identification Number

16-0393470

Entity Address, Address Line One

One Riverfront Plaza

Entity Address, City or Town

Corning

Entity Address, State or Province

NY

Entity Address, Postal Zip Code

14831

City Area Code

607-

Local Phone Number

974-9000

Entity Emerging Growth Company

false

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Amendment Flag

false

Central Index Key

0000024741

Common Stock

Document Information [Line Items]

Title of 12(b) Security

Common Stock, $0.50 par value per share

Trading Symbol

GLW

Security Exchange Name

NYSE

3.875% Notes Due 2026

Document Information [Line Items]

Title of 12(b) Security

3.875% Notes due 2026

Trading Symbol

GLW26

Security Exchange Name

NYSE

4.125% Notes Due 2031

Document Information [Line Items]

Title of 12(b) Security

4.125% Notes due 2031

Trading Symbol

GLW31

Security Exchange Name

NYSE

X

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:

dei_DocumentInformationLineItems

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

na

Period Type:

duration

X

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=glw_A3.875NotesDue2026Member

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=glw_A4.125NotesDue2031Member

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type: