Shareholder Vote · Reg FD Disclosure

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): April 27, 2022 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): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ 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 ☐ 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 5.07. Submission of Matters to a Vote of Security Holders. (a) and (b) Olin’s 2022 annual meeting of shareholders was held on April 28, 2022. Of the 154,208,652 shares of Common Stock entitled to vote at such meeting, 138,087,097 shares were present for purposes of a quorum. The voting results for each of the three proposals submitted for vote by Olin’s shareholders are set forth below. Votes For Votes Against Abstentions Broker Non-Votes Proposal 1 - Election of Directors Heidi S. Alderman 118,427,252 1,263,543 159,804 18,236,498 Beverley A. Babcock 118,466,350 1,230,492 153,757 18,236,498 C. Robert Bunch 117,351,659 2,295,537 203,403 18,236,498 Matthew S. Darnall 118,884,646 814,857 151,096 18,236,498 Scott D. Ferguson 118,040,199 1,642,881 167,519 18,236,498 Earl L. Shipp 118,857,910 829,006 163,683 18,236,498 Scott M. Sutton 116,992,415 2,491,959 366,225 18,236,498 William H. Weideman 105,676,581 14,008,747 165,271 18,236,498 W. Anthony Will 119,316,143 380,089 154,367 18,236,498 Carol A. Williams 118,027,349 1,296,270 526,980 18,236,498 Proposal 2 - Conduct an advisory vote to approve the compensation for named executive officers 116,728,748 2,724,016 397,835 18,236,498 Votes For Votes Against Abstentions Proposal 3 - Ratify the appointment of KPMG LLP as independent registered public accounting firm for 2022 134,884,013 2,959,498 243,586 (c) and (d) Not applicable. Item 7.01. Regulation FD Disclosure. On April 27, 2022, Olin Corporation’s (NYSE: OLN) Board of Directors declared a quarterly dividend of $0.20 on each share of Olin common stock. The dividend is payable on June 10, 2022 to shareholders of record at the close of business on May 10, 2022. This marks the company’s 382nd consecutive quarterly dividend. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, Olin has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. OLIN CORPORATION By: /s/ Dana O’Brien Name: Dana O’Brien Title: Senior Vice President, General Counsel and Secretary Date: April 28, 2022