GLW

EX-99.1

2 glw-20260328xex991xq12026.htm

EX-99.1

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

glw-202601280000024741CORNING INC /NYfalse00000247412026-01-282026-01-280000024741us-gaap:CommonStockMember2026-01-282026-01-280000024741glw:A3.875NotesDue2026Member2026-01-282026-01-280000024741glw:A4.125NotesDue2031Member2026-01-282026-01-28

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)January 28, 2026

CORNING INCORPORATED

(Exact name of registrant as specified in its charter) Commission file number: 1-3247

New York16-0393470 (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:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) oPre-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 January 28, 2026 regarding its financial results for the fourth quarter ended December 31, 2025 is attached hereto as Exhibit 99. 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 9.01. Financial Statements and Exhibits

(d) Exhibit

99Press Release dated January 28, 2026, issued by Corning Incorporated.

104Cover 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: January 28, 2026 By/s/ Stefan Becker Stefan Becker Senior Vice President and Corporate Controller

glw-202510280000024741CORNING INC /NYfalse00000247412025-10-282025-10-280000024741us-gaap:CommonStockMember2025-10-282025-10-280000024741glw:A3.875NotesDue2026Member2025-10-282025-10-280000024741glw:A4.125NotesDue2031Member2025-10-282025-10-28

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)October 28, 2025

CORNING INCORPORATED

(Exact name of registrant as specified in its charter) Commission file number: 1-3247

New York16-0393470 (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:

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) oPre-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 October 28, 2025 regarding its financial results for the third-quarter ended September 30, 2025 is attached hereto as Exhibit 99. 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 9.01. Financial Statements and Exhibits

(d) Exhibit

99Press Release dated October 28, 2025, issued by Corning Incorporated

104Cover 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: October 28, 2025 By/s/ Stefan Becker Stefan Becker Senior Vice President and Corporate Controller