Olin (NYSE: OLN) posts press release on Q4 2025 earnings

Rhea-AI Filing Summary

Olin Corporation filed a current report to let investors know it has released financial results for the fourth quarter ended December 31, 2025. The company issued a press release on January 29, 2026 describing these results.

That press release is included with the report as Exhibit 99.1, titled "Press Release announcing fourth quarter 2025 earnings." The report is signed on behalf of Olin by Vice President, Deputy General Counsel and Secretary Inchan Hwang.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 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 29, 2026

OLIN CORPORATION

(Exact name of registrant as specified in its charter)

Virginia			1-1070			13-1872319
(State or Other Jurisdiction of Incorporation)			(Commission File Number)			(IRS Employer Identification No.)

190 Carondelet Plaza,

Suite 1530

Clayton,

MO

63105

(Address of principal executive offices)

(Zip Code)

(314) 480-1400

(Registrant’s telephone number, including area code)

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

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 (see General Instruction A.2. below):

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

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

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

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

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

Title of each class

Trading Symbol

Name of each exchange on which registered

Common Stock, $1.00 par value per share

OLN

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

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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.

Item 2.02.    Results of Operations and Financial Condition.

On January 29, 2026, Olin Corporation (“Olin”) issued a press release announcing financial results for the fourth quarter ended December 31, 2025. Attached as Exhibit 99.1, and incorporated by reference into this Item 2.02, is a copy of Olin’s press release dated January 29, 2026.

Item 9.01.    Financial Statements and Exhibits.

(d) Exhibit No.			Exhibit
99.1			Press Release announcing fourth quarter 2025 earnings, dated January 29, 2026
104			Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURE

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 hereunto duly authorized.

			OLIN CORPORATION
			By:			/s/ Inchan Hwang
						Name:			Inchan Hwang
						Title:			Vice President, Deputy General Counsel and Secretary

Date: January 29, 2026

FAQ

What did Olin Corporation (OLN) disclose in this 8-K?

Olin Corporation reported that it issued a press release announcing its financial results for the fourth quarter ended December 31, 2025. The press release, dated January 29, 2026, is provided as Exhibit 99.1 and forms part of the company’s current report.

Which period do Olin Corporation’s newly announced results cover?

The financial results announced by Olin Corporation cover the fourth quarter ended December 31, 2025. These results are discussed in a press release dated January 29, 2026, which the company has attached to its current report as Exhibit 99.1.

Where can investors find details of Olin (OLN) fourth quarter 2025 earnings?

Detailed information on Olin’s fourth quarter 2025 earnings is contained in the press release dated January 29, 2026. This press release is attached to the company’s current report as Exhibit 99.1 and is incorporated by reference into the results discussion.

What exhibits did Olin Corporation include with this 8-K filing?

Olin Corporation included two exhibits: Exhibit 99.1, a press release announcing fourth quarter 2025 earnings dated January 29, 2026, and Exhibit 104, the cover page interactive data file embedded within the Inline XBRL document accompanying the current report.

Who signed Olin Corporation’s 8-K reporting Q4 2025 results?

The current report was signed on behalf of Olin Corporation by Inchan Hwang. Hwang serves as Vice President, Deputy General Counsel and Secretary, indicating the document carries formal corporate authorization for the disclosed earnings press release.