UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)


☒			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, ~~2022~~2023


☐			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number 1-1070

Olin Corporation

(Exact name of registrant as specified in its charter)


Virginia			13-1872319
(State or other jurisdiction of incorporation or organization)			(I.R.S. Employer Identification No.)

190 Carondelet Plaza,

Suite 1530,

Clayton,

63105

(Address of principal executive offices)

(Zip Code)

(314) 480-1400

(Registrant’s telephone number, including area code)

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 (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒ Accelerated filer ☐ Non-accelerated filer ☐ Smaller reporting company ☐ 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. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of March 31, ~~2022, 151,832,528~~2023, 129,275,037 shares of the registrant’s common stock were outstanding.

Table of Contents


TABLE OF CONTENTS FOR FORM 10-Q		Page
Part I — Financial Information		3
Item 1.	Financial Statements	3
	Condensed Balance Sheets	3
	Condensed Statements of Operations	4
	Condensed Statements of Comprehensive Income (Loss)	5
	Condensed Statements of Shareholders’ Equity	6
	Condensed Statements of Cash Flows	7
	Notes to Condensed Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	2726
	Business Background	2726
	Executive Summary	27
	Consolidated Results of Operations	28
	Segment Results	3029
	Outlook	31
	Environmental Matters	3231
	Legal Matters and Contingencies	3332
	Liquidity and Capital Resources	3332
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	3735
Item 4.	Controls and Procedures	3736
	Cautionary Statement Regarding Forward-Looking Statements	3837
Part II — Other Information		4039
Item 1.	Legal Proceedings	4039
Item 1A.	Risk Factors	4039
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	4039
Item 3.	Defaults Upon Senior Securities	4039
Item 4.	Mine Safety Disclosures	4039
Item 5.	Other Information	4039
Item 6.	Exhibits	4140
SIGNATURES		4241

Table of Contents

Part I — Financial Information

Item 1. Financial Statements.

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Balance Sheets

(In millions, except per share data)

(Unaudited)

March 31, 2022 December 31, 2021 March 31, 2021
Assets
Current assets:
Cash and cash equivalents $ 197.9 $ 180.5 $ 259.9
Receivables, net 1,181.2 1,106.5 963.7
Income taxes receivable 1.2 0.3 13.4
Inventories, net 909.2 868.3 679.5
Other current assets 148.9 92.7 96.5
Total current assets 2,438.4 2,248.3 2,013.0
Property, plant and equipment (less accumulated depreciation of $4,182.0, $4,076.5 and $3,804.4) 2,827.0 2,913.6 3,073.4
Operating lease assets, net 362.5 372.4 383.6
Deferred income taxes 95.3 99.3 11.1
Other assets 1,116.3 1,131.8 1,171.0
Intangible assets, net 314.5 331.7 381.0
Goodwill 1,420.7 1,420.6 1,420.1
Total assets $ 8,574.7 $ 8,517.7 $ 8,453.2
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt $ 201.2 $ 201.1 $ 42.1
Accounts payable 791.5 847.7 716.6
Income taxes payable 184.9 98.4 13.4
Current operating lease liabilities 75.4 76.8 78.7
Accrued liabilities 382.1 458.1 367.4
Total current liabilities 1,635.1 1,682.1 1,218.2
Long-term debt 2,578.9 2,578.2 3,706.0
Operating lease liabilities 293.7 302.0 310.5
Accrued pension liability 355.9 381.9 699.8
Deferred income taxes 577.2 558.9 492.3
Other liabilities 348.0 362.4 329.8
Total liabilities 5,788.8 5,865.5 6,756.6
Commitments and contingencies 0 0 0
Shareholders’ equity:
Common stock, $1.00 par value per share: authorized, 240.0 shares; issued and outstanding, 151.8, 156.8 and 159.2 shares 151.8 156.8 159.2
Additional paid-in capital 1,719.3 1,969.6 2,164.3
Accumulated other comprehensive loss (461.2) (488.0) (683.7)
Retained earnings 1,376.0 1,013.8 56.8
Total shareholders’ equity 2,785.9 2,652.2 1,696.6
Total liabilities and shareholders’ equity $ 8,574.7 $ 8,517.7 $ 8,453.2


	March 31, 2023		December 31, 2022		March 31, 2022
Assets
Current assets:
Cash and cash equivalents	$	176.0	$	194.0	$	197.9
Receivables, net	932.1		924.6		1,181.2
Income taxes receivable	29.7		43.2		1.2
Inventories, net	1,089.9		941.9		909.2
Other current assets	70.5		52.7		148.9
Total current assets	2,298.2		2,156.4		2,438.4
Property, plant and equipment (less accumulated depreciation of $4,536.5, $4,413.1 and $4,182.0)	2,606.7		2,674.1		2,827.0
Operating lease assets, net	346.8		356.0		362.5
Deferred income taxes	67.3		60.5		95.3
Other assets	1,104.7		1,102.5		1,116.3
Intangible assets, net	264.8		273.8		314.5
Goodwill	1,420.9		1,420.9		1,420.7
Total assets	$	8,109.4	$	8,044.2	$	8,574.7
Liabilities and Shareholders’ Equity
Current liabilities:
Current installments of long-term debt	$	9.6	$	9.7	$	201.2
Accounts payable	817.1		837.7		791.5
Income taxes payable	109.1		133.4		184.9
Current operating lease liabilities	72.1		71.8		75.4
Accrued liabilities	427.2		508.8		382.1
Total current liabilities	1,435.1		1,561.4		1,635.1
Long-term debt	2,764.6		2,571.0		2,578.9
Operating lease liabilities	282.8		292.5		293.7
Accrued pension liability	230.4		234.5		355.9
Deferred income taxes	505.0		507.3		577.2
Other liabilities	356.9		333.9		348.0
Total liabilities	5,574.8		5,500.6		5,788.8
Commitments and contingencies
Shareholders’ equity:
Common stock, $1.00 par value per share: authorized, 240.0 shares; issued and outstanding, 129.3, 132.3 and 151.8 shares	129.3		132.3		151.8
Additional paid-in capital	491.6		682.7		1,719.3
Accumulated other comprehensive loss	(482.7)		(495.9)		(461.2)
Retained earnings	2,354.6		2,224.5		1,376.0
Olin Corporation’s shareholders’ equity	2,492.8		2,543.6		2,785.9
Noncontrolling interests	41.8		—		—
Total equity	2,534.6		2,543.6		2,785.9
Total liabilities and equity	$	8,109.4	$	8,044.2	$	8,574.7

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

Table of Contents

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Operations

(In millions, except per share data)

(Unaudited)


		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
Sales	Sales		$	2,461.4	$	1,918.8	Sales		$	1,844.3	$	2,461.4
Operating expenses:	Operating expenses:						Operating expenses:
Cost of goods sold	Cost of goods sold		1,807.5		1,423.8		Cost of goods sold		1,441.7		1,807.5
Selling and administration	Selling and administration		104.3		106.9		Selling and administration		111.8		104.3
Restructuring charges	Restructuring charges		3.1		6.9		Restructuring charges		60.9		3.1
Other operating income							Other operating income		0.5		—
Operating income	Operating income		546.5		381.2		Operating income		230.4		546.5
Interest expense	Interest expense		32.9		84.5		Interest expense		42.4		32.9
Interest income	Interest income		0.4		0.1		Interest income		1.1		0.4
Non-operating pension income	Non-operating pension income		9.6		9.3		Non-operating pension income		5.7		9.6
Income before taxes	Income before taxes		523.6		306.1		Income before taxes		194.8		523.6
Income tax provision	Income tax provision		130.6		62.5		Income tax provision		40.8		130.6
Net income	Net income		$	393.0	$	243.6	Net income		$	154.0	$	393.0
Net income per common share:
Net loss attributable to noncontrolling interests							Net loss attributable to noncontrolling interests		(2.3)		—
Net income attributable to Olin Corporation							Net income attributable to Olin Corporation		$	156.3	$	393.0
Net income attributable to Olin Corporation per common share:							Net income attributable to Olin Corporation per common share:
Basic	Basic		$	2.54	$	1.54	Basic		$	1.19	$	2.54
Diluted	Diluted		$	2.48	$	1.51	Diluted		$	1.16	$	2.48
Average common shares outstanding:	Average common shares outstanding:						Average common shares outstanding:
Basic	Basic		154.7		158.6		Basic		131.0		154.7
Diluted	Diluted		158.6		160.8		Diluted		134.4		158.6

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

Table of Contents

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Comprehensive Income (Loss)

(In millions)

(Unaudited)


		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
Net income	Net income		$	393.0	$	243.6	Net income		$	154.0	$	393.0
Other comprehensive income, net of tax:	Other comprehensive income, net of tax:						Other comprehensive income, net of tax:
Foreign currency translation adjustments, net			(10.5)		(11.4)
Foreign currency translation adjustments							Foreign currency translation adjustments		5.5		(10.5)
Unrealized gains on derivative contracts, net	Unrealized gains on derivative contracts, net		30.7		7.0		Unrealized gains on derivative contracts, net		7.4		30.7
Amortization of prior service costs and actuarial losses, net	Amortization of prior service costs and actuarial losses, net		6.6		10.6		Amortization of prior service costs and actuarial losses, net		0.3		6.6
Total other comprehensive income, net of tax	Total other comprehensive income, net of tax		26.8		6.2		Total other comprehensive income, net of tax		13.2		26.8
Comprehensive income	Comprehensive income		$	419.8	$	249.8	Comprehensive income		167.2		419.8
Comprehensive loss attributable to noncontrolling interests							Comprehensive loss attributable to noncontrolling interests		(2.3)		—
Comprehensive income attributable to Olin Corporation							Comprehensive income attributable to Olin Corporation		$	169.5	$	419.8

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

Table of Contents

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Shareholders’ Equity

(In millions, except per share data)

(Unaudited)


		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
Common Stock	Common Stock						Common Stock
Balance at beginning of period	Balance at beginning of period		$	156.8	$	158.0	Balance at beginning of period		$	132.3	$	156.8
Common stock repurchased and retired	Common stock repurchased and retired		(5.2)		—		Common stock repurchased and retired		(3.6)		(5.2)
Common stock issued for:	Common stock issued for:						Common stock issued for:
Stock options exercised	Stock options exercised		0.2		1.2		Stock options exercised		0.4		0.2
Other transactions							Other transactions		0.2		—
Balance at end of period	Balance at end of period		$	151.8	$	159.2	Balance at end of period		$	129.3	$	151.8
Additional Paid-In Capital	Additional Paid-In Capital						Additional Paid-In Capital
Balance at beginning of period	Balance at beginning of period		$	1,969.6	$	2,137.8	Balance at beginning of period		$	682.7	$	1,969.6
Common stock repurchased and retired	Common stock repurchased and retired		(258.0)		—		Common stock repurchased and retired		(202.5)		(258.0)
Common stock issued for:	Common stock issued for:						Common stock issued for:
Stock options exercised	Stock options exercised		5.0		24.5		Stock options exercised		10.8		5.0
Other transactions	Other transactions		2.2		1.4		Other transactions		1.4		2.2
Stock-based compensation	Stock-based compensation		0.5		0.6		Stock-based compensation		(0.8)		0.5
Balance at end of period	Balance at end of period		$	1,719.3	$	2,164.3	Balance at end of period		$	491.6	$	1,719.3
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss						Accumulated Other Comprehensive Loss
Balance at beginning of period	Balance at beginning of period		$	(488.0)	$	(689.9)	Balance at beginning of period		$	(495.9)	$	(488.0)
Other comprehensive income	Other comprehensive income		26.8		6.2		Other comprehensive income		13.2		26.8
Balance at end of period	Balance at end of period		$	(461.2)	$	(683.7)	Balance at end of period		$	(482.7)	$	(461.2)
Retained Earnings (Accumulated Deficit)
Retained Earnings							Retained Earnings
Balance at beginning of period	Balance at beginning of period		$	1,013.8	$	(155.1)	Balance at beginning of period		$	2,224.5	$	1,013.8
Net income	Net income		393.0		243.6		Net income		156.3		393.0
Common stock dividends paid	Common stock dividends paid		(30.8)		(31.7)		Common stock dividends paid		(26.2)		(30.8)
Balance at end of period	Balance at end of period		$	1,376.0	$	56.8	Balance at end of period		$	2,354.6	$	1,376.0
Total Shareholders’ Equity			$	2,785.9	$	1,696.6
Olin Corporation’s Shareholders’ Equity							Olin Corporation’s Shareholders’ Equity		$	2,492.8	$	2,785.9
Noncontrolling Interests							Noncontrolling Interests
Balance at beginning of period							Balance at beginning of period		$	—	$	—
Net loss							Net loss		(2.3)		—
Contributions from noncontrolling interests							Contributions from noncontrolling interests		44.1		—
Balance at end of period							Balance at end of period		$	41.8	$	—
Total Equity							Total Equity		$	2,534.6	$	2,785.9

Dividends declared per share of common stock	Dividends declared per share of common stock		$	0.20	$	0.20	Dividends declared per share of common stock		$	0.20	$	0.20

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

Table of Contents

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Condensed Statements of Cash Flows

(In millions)

(Unaudited)


		Three Months Ended March 31,					Three Months Ended March 31,
		2022		2021			2023		2022
Operating Activities	Operating Activities					Operating Activities
Net income	Net income	$	393.0	$	243.6	Net income	$	154.0	$	393.0
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:	Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:					Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Stock-based compensation	Stock-based compensation	3.1		2.0		Stock-based compensation	3.7		3.1
Loss on Debt Extinguishment		—		23.5
Depreciation and amortization	Depreciation and amortization	151.7		145.2		Depreciation and amortization	137.1		151.7
Deferred income taxes	Deferred income taxes	7.9		51.6		Deferred income taxes	(11.0)		7.9
Write-off of equipment and facility included in restructuring charges						Write-off of equipment and facility included in restructuring charges	12.8		—
Qualified pension plan contributions	Qualified pension plan contributions	(0.4)		(0.1)		Qualified pension plan contributions	(0.8)		(0.4)
Qualified pension plan income	Qualified pension plan income	(8.0)		(7.3)		Qualified pension plan income	(5.1)		(8.0)
Change in:	Change in:					Change in:
Receivables	Receivables	(85.6)		(207.1)		Receivables	(4.5)		(85.6)
Income taxes receivable/payable	Income taxes receivable/payable	88.0		4.6		Income taxes receivable/payable	(11.9)		88.0
Inventories	Inventories	(45.0)		(10.7)		Inventories	(146.0)		(45.0)
Other current assets	Other current assets	(20.3)		12.2		Other current assets	(15.9)		(20.3)
Accounts payable and accrued liabilities	Accounts payable and accrued liabilities	(132.6)		(3.3)		Accounts payable and accrued liabilities	(66.1)		(132.6)
Other assets	Other assets	(0.8)		8.2		Other assets	(10.5)		(0.8)
Other noncurrent liabilities	Other noncurrent liabilities	2.8		7.5		Other noncurrent liabilities	6.0		2.8
Other operating activities	Other operating activities	(0.3)		(0.1)		Other operating activities	(4.3)		(0.3)
Net operating activities	Net operating activities	353.5		269.8		Net operating activities	37.5		353.5
Investing Activities	Investing Activities					Investing Activities
Capital expenditures	Capital expenditures	(47.3)		(51.2)		Capital expenditures	(61.4)		(47.3)
Payments under other long-term supply contracts						Payments under other long-term supply contracts	(9.3)		—
Other investing activities						Other investing activities	(0.4)		—
Net investing activities	Net investing activities	(47.3)		(51.2)		Net investing activities	(71.1)		(47.3)
Financing Activities	Financing Activities					Financing Activities
Long-term debt:	Long-term debt:					Long-term debt:
Borrowings	Borrowings	65.0		365.0		Borrowings	290.0		65.0
Repayments	Repayments	(65.2)		(485.2)		Repayments	(97.4)		(65.2)
Debt Early Redemption Premium		—		(18.7)
Common stock repurchased and retired	Common stock repurchased and retired	(263.2)		—		Common stock repurchased and retired	(206.1)		(263.2)
Stock options exercised	Stock options exercised	5.2		25.7		Stock options exercised	11.2		5.2
Dividends paid	Dividends paid	(30.8)		(31.7)		Dividends paid	(26.2)		(30.8)
Debt issuance costs		—		(3.1)
Contributions received from noncontrolling interests						Contributions received from noncontrolling interests	44.1		—
Net financing activities	Net financing activities	(289.0)		(148.0)		Net financing activities	15.6		(289.0)
Effect of exchange rate changes on cash and cash equivalents	Effect of exchange rate changes on cash and cash equivalents	0.2		(0.4)		Effect of exchange rate changes on cash and cash equivalents	—		0.2
Net increase in cash and cash equivalents		17.4		70.2
Net (decrease) increase in cash and cash equivalents						Net (decrease) increase in cash and cash equivalents	(18.0)		17.4
Cash and cash equivalents, beginning of year	Cash and cash equivalents, beginning of year	180.5		189.7		Cash and cash equivalents, beginning of year	194.0		180.5
Cash and cash equivalents, end of period	Cash and cash equivalents, end of period	$	197.9	$	259.9	Cash and cash equivalents, end of period	$	176.0	$	197.9
Cash paid for interest and income taxes:	Cash paid for interest and income taxes:					Cash paid for interest and income taxes:
Interest, net	Interest, net	$	53.5	$	98.2	Interest, net	$	60.7	$	53.5
Income taxes, net of refunds	Income taxes, net of refunds	$	20.0	$	4.7	Income taxes, net of refunds	$	52.8	$	20.0
Non-cash investing activities:	Non-cash investing activities:					Non-cash investing activities:
Decrease in capital expenditures included in accounts payable and accrued liabilities	Decrease in capital expenditures included in accounts payable and accrued liabilities	$	11.4	$	28.9	Decrease in capital expenditures included in accounts payable and accrued liabilities	$	9.8	$	11.4

The accompanying notes to condensed financial statements are an integral part of the condensed financial statements.

Table of Contents

OLIN CORPORATION AND CONSOLIDATED SUBSIDIARIES

Notes to Condensed Financial Statements

(Unaudited)

NOTE 1. DESCRIPTION OF BUSINESS

Olin Corporation (Olin) is a Virginia corporation, incorporated in 1892, having its principal executive offices in Clayton, MO. We are a leading vertically-integrated global manufacturer and distributor of chemical products and a leading U.S. manufacturer of ammunition. Our operations are concentrated in three business segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. All of our business segments are capital intensive manufacturing businesses. The Chlor Alkali Products and Vinyls segment manufactures and sells chlorine and caustic soda, ethylene dichloride ~~(EDC)~~ and vinyl chloride monomer, methyl chloride, methylene chloride, chloroform, carbon tetrachloride, perchloroethylene, ~~trichloroethylene,~~ hydrochloric acid, hydrogen, bleach products and potassium hydroxide. The Epoxy segment produces and sells a full range of epoxy materials and precursors, including aromatics (acetone ~~bisphenol, cumene~~ and phenol), allyl chloride, epichlorohydrin, liquid epoxy resins, solid epoxy resins and ~~downstream~~systems and growth products such as converted epoxy resins and additives. The Winchester segment produces and sells sporting ammunition, reloading components, small caliber military ammunition and components, and industrial cartridges.

On January 10, 2023, Blue Water Alliance (BWA), our joint venture with Mitsui & Co., Ltd. (Mitsui), began operations after receiving all necessary regulatory approvals. BWA is an independent global trader of ECU-based derivatives, focused on globally traded caustic soda and ethylene dichloride (EDC). Olin holds 51% interest and exercises control in BWA and the joint venture is consolidated in our consolidated financial statements with Mitsui’s 49% interest in BWA classified as noncontrolling interest. All intercompany accounts and transactions are eliminated in consolidation.

We have prepared the condensed financial statements included herein, without audit, pursuant to the rules and regulations of the United States (U.S.) Securities and Exchange Commission (SEC). The preparation of the financial statements requires estimates and assumptions that affect amounts reported and disclosed in the financial statements and related notes. In our opinion, these financial statements reflect all adjustments (consisting only of normal accruals), which are necessary to present fairly the results for interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations; however, we believe that the disclosures are appropriate. We recommend that you read these condensed financial statements in conjunction with the financial statements, accounting policies and the notes thereto and Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, ~~2021. Certain reclassifications were made to prior year amounts to conform to the 2022 presentation.~~2022.

NOTE 2. RECENT ACCOUNTING PRONOUNCEMENTS

We do not believe that any recently issued effective pronouncements, or pronouncements issued but not yet effective, if adopted, would have a material effect on the accompanying condensed financial statements.

NOTE 3. RESTRUCTURING CHARGES

~~Olin~~As a result of weak global resin demand and higher cost structures within the European region, we began a review of our global Epoxy asset footprint to optimize the most productive and cost effective assets to support our strategic operating model. As part of this review we announced operational cessations in the fourth quarter of 2022 and the first quarter of 2023 (collectively, Epoxy Optimization Plan).

On March 21, 2023, we announced we had made the decision to cease operations at our Cumene facility in Terneuzen, Netherlands and solid epoxy resin production at our facilities in Gumi, South Korea and Guaruja, Brazil. The closures were completed in the first quarter 2023. During the fourth quarter of 2022, we committed to and completed a ~~productivity initiative~~plan to ~~align~~close down one of our bisphenol (BisA) production lines at our Stade, Germany site. For the ~~organization with our new operating model and improve efficiencies (collectively, Productivity Plan). These actions and related activities were completed during the second quarter of 2021. We~~three months ended March 31, 2023, we recorded pretax restructuring charges of ~~$10.3~~$55.9 million for ~~employee severance~~contract termination costs, the write-off of equipment and ~~related benefit~~facility costs and facility exit costs related to ~~these actions in~~ the ~~second~~first quarter 2023 cessations. For the three months ended March 31, 2023, we recorded additional pretax restructuring charges of ~~2021.~~$1.9 million for facility exit costs related to the fourth quarter 2022 BisA closure. We ~~do not~~ expect to incur additional restructuring charges through 2026 of approximately $30 million related to these actions.

~~On March 15,~~During 2021, we announced that we had made the decision to permanently close ~~approximately 50% of~~ our diaphragm-grade chlor alkali capacity, representing ~~200,000~~400,000 tons, at our McIntosh, AL ~~facility.~~facility(McIntosh Plan). The closure was completed ~~in the first quarter~~during third

Table of 2021. On October 21, 2021, we announced that we had made a decision to permanently cease operations of the remaining 50% of our diaphragm-grade chlor alkali capacity, representing an additional 200,000 tons, at our McIntosh, AL facility (collectively, McIntosh Plan). The closure is expected to be completed by the end of the third Contents

quarter of 2022. For the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, we recorded pretax restructuring charges of ~~$0.9~~$1.4 million and ~~$4.4~~$0.9 million, respectively, for write-off of equipment and facility costs, lease and other contract termination costs and for facility exit costs related to this action. We expect to incur additional restructuring charges through ~~2026~~2027 of approximately ~~$35~~$30 million related to these actions.

On January 18, 2021, we announced we had made the decision to permanently close our trichloroethylene and anhydrous hydrogen chloride liquefaction facilities in Freeport, TX (collectively, Freeport 2021 Plan), which were completed in the fourth quarter of 2021. For the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, we recorded pretax restructuring charges of $0.7 million and $0.3 million, ~~and $1.3 million~~respectively, for facility exit costs related to these actions. We expect to incur additional restructuring charges through 2024 of approximately ~~$20~~$15 million related to these actions.

On December 11, 2019, we announced that we had made the decision to permanently close a chlor alkali plant with a capacity of 230,000 tons and our vinylidene chloride (VDC) production facility, both in Freeport, TX (collectively, Freeport 2019 Plan). The VDC facility and related chlor alkali plant were closed during the fourth quarter of 2020 and second quarter of

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2021, respectively. For the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, we recorded pretax restructuring charges of ~~$1.7~~$1.0 million and ~~$0.8~~$1.7 million, respectively, for facility exit costs related to these actions. We expect to incur additional restructuring charges through ~~2025~~2026 of approximately ~~$40~~$30 million related to these actions.

On March 21, 2016, we announced that we had made the decision to close a combined total of 433,000 tons of chlor alkali capacity across three separate locations (collectively, Chlor Alkali 2016 Plan). Associated with this action, we have permanently closed our Henderson, NV chlor alkali plant with 153,000 tons of capacity and have reconfigured the site to manufacture bleach and distribute caustic soda and hydrochloric acid. Also, the capacity of our Niagara Falls, NY chlor alkali plant has been reduced from 300,000 tons to 240,000 tons and the chlor alkali capacity at our Freeport, TX facility was reduced by 220,000 tons. This 220,000 ton reduction was entirely from diaphragm cell capacity. For the three months ended March 31, 2022, ~~and 2021,~~ we recorded pretax restructuring charges of $0.2 million ~~and $0.4 million, respectively,~~ for facility exit costs and lease and other contract termination costs related to these actions. We do not expect to incur additional restructuring charges ~~through 2022 of approximately $1 million~~ related to these capacity reductions.

The following table summarizes the ~~2022~~2023 and ~~2021~~2022 activities by major component of these restructuring actions and the remaining balances of accrued restructuring costs as of March 31, ~~2022~~2023 and ~~2021:~~2022:


		Employee severance and related benefit costs		Lease and other contract termination costs		Facility exit costs		Write-off of equipment and facility		Total			Employee severance and related benefit costs		Lease and other contract termination costs		Facility exit costs		Write-off of equipment and facility		Total
		($ in millions)											($ in millions)
Balance at January 1, 2021		$	1.8	$	1.7	$	—	$	—	$	3.5

Restructuring charges		—		4.6		2.3		—		6.9

Amounts utilized		(0.4)		(0.1)		(2.3)		—		(2.8)
Balance at March 31, 2021		$	1.4	$	6.2	$	—	$	—	$	7.6
Balance at January 1, 2022	Balance at January 1, 2022	$	6.9	$	5.4	$	—	$	—	$	12.3	Balance at January 1, 2022	$	6.9	$	5.4	$	—	$	—	$	12.3

Restructuring charges	Restructuring charges	—		0.1		2.6		0.4		3.1		Restructuring charges	—		0.1		2.6		0.4		3.1

Amounts utilized	Amounts utilized	(2.0)		(0.2)		(2.6)		(0.4)		(5.2)		Amounts utilized	(2.0)		(0.2)		(2.6)		(0.4)		(5.2)
Balance at March 31, 2022	Balance at March 31, 2022	$	4.9	$	5.3	$	—	$	—	$	10.2	Balance at March 31, 2022	$	4.9	$	5.3	$	—	$	—	$	10.2
Balance at January 1, 2023												Balance at January 1, 2023	$	9.4	$	4.2	$	—	$	—	$	13.6

Restructuring charges												Restructuring charges	—		39.7		8.4		12.8		60.9

Amounts utilized												Amounts utilized	(0.7)		(3.5)		(8.4)		(12.8)		(25.4)
Balance at March 31, 2023												Balance at March 31, 2023	$	8.7	$	40.4	$	—	$	—	$	49.1

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The following table summarizes the cumulative restructuring charges of these restructuring actions by major component through March 31, ~~2022:~~2023:


		Chlor Alkali Products and Vinyls								Corporate/other		Total			Chlor Alkali Products and Vinyls								Epoxy		Corporate/other		Total
		McIntosh Plan		Freeport 2021 Plan		Freeport 2019 Plan		Chlor Alkali 2016 Plan		Productivity Plan					McIntosh Plan		Freeport 2021 Plan		Freeport 2019 Plan		Chlor Alkali 2016 Plan		Epoxy Optimization Plan		Productivity Plan
		($ in millions)													($ in millions)
Write-off of equipment and facility	Write-off of equipment and facility	$	—	$	—	$	58.9	$	78.1	$	—	$	137.0	Write-off of equipment and facility	$	2.7	$	—	$	58.9	$	78.1	$	13.4	$	—	$	153.1
Employee severance and related benefit costs	Employee severance and related benefit costs	—		—		2.1		6.7		10.3		19.1		Employee severance and related benefit costs	—		—		2.1		6.7		7.4		10.3		26.5
Facility exit costs	Facility exit costs	0.5		6.8		7.3		53.2		—		67.8		Facility exit costs	6.2		9.8		12.6		53.2		5.8		—		87.6
Employee relocation costs	Employee relocation costs	—		—		—		1.7		—		1.7		Employee relocation costs	—		—		—		1.7		—		—		1.7
Lease and other contract termination costs	Lease and other contract termination costs	6.0		—		—		42.8		—		48.8		Lease and other contract termination costs	6.4		—		—		43.0		39.2		—		88.6
Total cumulative restructuring charges	Total cumulative restructuring charges	$	6.5	$	6.8	$	68.3	$	182.5	$	10.3	$	274.4	Total cumulative restructuring charges	$	15.3	$	9.8	$	73.6	$	182.7	$	65.8	$	10.3	$	357.5

As of March 31, ~~2022,~~2023, we have incurred cash expenditures of ~~$125.7~~$155.3 million and non-cash charges of ~~$138.5~~$153.1 million related to these restructuring actions. The remaining balance of ~~$10.2~~$49.1 million is expected to be paid out through 2028.

NOTE 4. ACCOUNTS RECEIVABLES

We maintain a ~~$300.0~~$425.0 million Receivables Financing Agreement (Receivables Financing Agreement) that is scheduled to mature on ~~September 28, 2024. The Receivables Financing Agreement includes a minimum borrowing requirement of 50% of the facility limit or available borrowing capacity, whichever is less.~~October 14, 2025. Under the Receivables Financing Agreement, our eligible

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trade receivables are used for collateralized borrowings and continue to be serviced by us. In addition, the Receivables Financing Agreement incorporates the net leverage ratio covenant that is contained in the ~~$1,615.0~~$1,550.0 million senior credit facility. As of March 31, 2023, December 31, 2022 ~~$642.4~~and March 31, 2022, we had $355.0 million, $300.0 million and $300.0 million, respectively, drawn under the agreement. As of March 31, 2023, $569.0 million of our trade receivables were pledged as collateral and we had ~~$300.0~~$70.0 million ~~drawn with no~~of additional borrowing capacity ~~available under the Receivables Financing Agreement. As of December 31, 2021 and March 31, 2021, we had $300.0 million and $125.0 million, respectively, drawn~~ under the Receivables Financing Agreement.


		March 31,					March 31,
		2022		2021			2023		2022
		($ in millions)					($ in millions)
Balance at beginning of year	Balance at beginning of year	$	83.3	$	48.8	Balance at beginning of year	$	111.8	$	83.3
Gross receivables sold	Gross receivables sold	281.4		312.0		Gross receivables sold	252.3		281.4
Payments received from customers on sold accounts	Payments received from customers on sold accounts	(266.8)		(218.3)		Payments received from customers on sold accounts	(287.0)		(266.8)
Balance at end of period	Balance at end of period	$	97.9	$	142.5	Balance at end of period	$	77.1	$	97.9

The factoring discount paid under the AR Facilities is recorded as interest expense on the condensed statements of operations. The factoring discount was ~~$0.5~~$1.2 million and ~~$0.4~~$0.5 million for the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, respectively. The agreements are without recourse and therefore no recourse liability had been recorded as of March 31, ~~2022,~~2023, December 31, ~~2021~~2022 or March 31, ~~2021.~~2022.

Our condensed balance sheets included an allowance for doubtful accounts receivables of ~~$15.2~~$13.1 million, ~~$12.3~~$12.6 million and ~~$12.2~~$15.2 million and other receivables of ~~$65.6~~$67.7 million, ~~$65.3~~$71.6 million and ~~$60.3~~$65.6 million at March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, respectively, which were included in receivables, net.

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NOTE 5. INVENTORIES

Inventories consisted of the following:


		March 31, 2022		December 31, 2021		March 31, 2021			March 31, 2023		December 31, 2022		March 31, 2022
		($ in millions)							($ in millions)
Supplies	Supplies	$	131.4	$	115.6	$	113.9	Supplies	$	140.0	$	137.6	$	131.4
Raw materials	Raw materials	189.4		180.7		123.1		Raw materials	193.5		201.2		189.4
Work in process	Work in process	175.2		155.2		134.3		Work in process	211.4		199.6		175.2
Finished goods	Finished goods	557.3		523.3		366.2		Finished goods	721.8		559.3		557.3
Inventories excluding LIFO reserve	Inventories excluding LIFO reserve	1,053.3		974.8		737.5		Inventories excluding LIFO reserve	1,266.7		1,097.7		1,053.3
LIFO reserve	LIFO reserve	(144.1)		(106.5)		(58.0)		LIFO reserve	(176.8)		(155.8)		(144.1)
Inventories, net	Inventories, net	$	909.2	$	868.3	$	679.5	Inventories, net	$	1,089.9	$	941.9	$	909.2

Inventories are valued at the lower of cost and net realizable value. For U.S. inventories, inventory costs are determined principally by the last-in, first-out (LIFO) method of inventory accounting while for international inventories, inventory costs are determined principally by the first-in, first-out (FIFO) method of inventory accounting. Cost for other inventories has been determined principally by the average-cost method (primarily operating supplies, spare parts and maintenance parts). Elements of costs in inventories included raw materials, direct labor and manufacturing overhead. Inventories under the LIFO method are based on annual estimates of quantities and costs as of year-end; therefore, the condensed financial statements at March 31, ~~2022~~2023 reflect certain estimates relating to inventory quantities and costs at December 31, ~~2022.~~2023. The replacement cost of our inventories would have been approximately ~~$144.1~~$176.8 million, ~~$106.5~~$155.8 million and ~~$58.0~~$144.1 million higher than reported at March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, respectively.

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NOTE 6. OTHER ASSETS

Included in other assets were the following:


		March 31, 2022		December 31, 2021		March 31, 2021			March 31, 2023		December 31, 2022		March 31, 2022
		($ in millions)							($ in millions)
Supply contracts	Supply contracts	$	1,044.6	$	1,061.8	$	1,106.2	Supply contracts	$	1,045.4	$	1,048.0	$	1,044.6
Other	Other	71.7		70.0		64.8		Other	59.3		54.5		71.7
Other assets	Other assets	$	1,116.3	$	1,131.8	$	1,171.0	Other assets	$	1,104.7	$	1,102.5	$	1,116.3

Amortization expense of $17.6 million ~~and $17.5 million~~ for both the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, respectively, was recognized within cost of goods sold related to our long-term supply contracts and is reflected in depreciation and amortization on the condensed statements of cash flows. ~~The long-term supply contracts are monitored for impairment each reporting period.~~

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NOTE 7. GOODWILL AND INTANGIBLE ASSETS

Changes in the carrying value of goodwill were as follows:


		Chlor Alkali Products and Vinyls		Epoxy		Total			Chlor Alkali Products and Vinyls		Epoxy		Total
		($ in millions)							($ in millions)
Balance at January 1, 2021		$	1,275.3	$	144.9	$	1,420.2
Foreign currency translation adjustment		(0.1)		—		(0.1)
Balance at March 31, 2021		$	1,275.2	$	144.9	$	1,420.1
Balance at January 1, 2022	Balance at January 1, 2022	$	1,275.6	$	145.0	$	1,420.6	Balance at January 1, 2022	$	1,275.6	$	145.0	$	1,420.6
Foreign currency translation adjustment	Foreign currency translation adjustment	0.1		—		0.1		Foreign currency translation adjustment	0.1		—		0.1
Balance at March 31, 2022	Balance at March 31, 2022	$	1,275.7	$	145.0	$	1,420.7	Balance at March 31, 2022	$	1,275.7	$	145.0	$	1,420.7
Balance at January 1, 2023								Balance at January 1, 2023	$	1,275.8	$	145.1	$	1,420.9
Foreign currency translation adjustment								Foreign currency translation adjustment	—		—		—
Balance at March 31, 2023								Balance at March 31, 2023	$	1,275.8	$	145.1	$	1,420.9

Intangible assets consisted of the following:


		March 31, 2022						December 31, 2021						March 31, 2021							March 31, 2023						December 31, 2022						March 31, 2022
		Gross Amount		Accumulated Amortization		Net		Gross Amount		Accumulated Amortization		Net		Gross Amount		Accumulated Amortization		Net			Gross Amount		Accumulated Amortization		Net		Gross Amount		Accumulated Amortization		Net		Gross Amount		Accumulated Amortization		Net
		($ in millions)																			($ in millions)
Customers, customer contracts and relationships	Customers, customer contracts and relationships	$	672.0	$	(371.4)	$	300.6	$	674.4	$	(359.8)	$	314.6	$	677.2	$	(323.5)	$	353.7	Customers, customer contracts and relationships	$	670.2	$	(410.7)	$	259.5	$	669.1	$	(401.2)	$	267.9	$	672.0	$	(371.4)	$	300.6
Acquired technology	Acquired technology	93.5		(80.7)		12.8		93.9		(77.9)		16.0		94.3		(68.2)		26.1		Acquired technology	93.1		(88.9)		4.2		93.1		(88.3)		4.8		93.5		(80.7)		12.8
Other	Other	1.8		(0.7)		1.1		1.8		(0.7)		1.1		1.8		(0.6)		1.2		Other	1.8		(0.7)		1.1		1.8		(0.7)		1.1		1.8		(0.7)		1.1
Total intangible assets	Total intangible assets	$	767.3	$	(452.8)	$	314.5	$	770.1	$	(438.4)	$	331.7	$	773.3	$	(392.3)	$	381.0	Total intangible assets	$	765.1	$	(500.3)	$	264.8	$	764.0	$	(490.2)	$	273.8	$	767.3	$	(452.8)	$	314.5

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NOTE 8. EARNINGS PER SHARE

Basic and diluted net income attributable to Olin Corporation per share are computed by dividing net income attributable to Olin Corporation by the weighted-average number of common shares outstanding. Diluted net income attributable to Olin Corporation per share reflects the dilutive effect of stock-based compensation.


		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
Computation of Net Income per Share	Computation of Net Income per Share		(In millions, except per share data)				Computation of Net Income per Share		(In millions, except per share data)
Net income	Net income		$	393.0	$	243.6	Net income		$	154.0	$	393.0
Net loss attributable to noncontrolling interests							Net loss attributable to noncontrolling interests		(2.3)		—
Net income attributable to Olin Corporation							Net income attributable to Olin Corporation		$	156.3	$	393.0
Basic shares	Basic shares		154.7		158.6		Basic shares		131.0		154.7
Basic net income per share			$	2.54	$	1.54
Basic net income attributable to Olin Corporation per share							Basic net income attributable to Olin Corporation per share		$	1.19	$	2.54
Diluted shares:	Diluted shares:						Diluted shares:
Basic shares	Basic shares		154.7		158.6		Basic shares		131.0		154.7
Stock-based compensation	Stock-based compensation		3.9		2.2		Stock-based compensation		3.4		3.9
Diluted shares	Diluted shares		158.6		160.8		Diluted shares		134.4		158.6
Diluted net income per share			$	2.48	$	1.51
Diluted net income attributable to Olin Corporation per share							Diluted net income attributable to Olin Corporation per share		$	1.16	$	2.48

The computation of dilutive shares does not include ~~0.8~~1.4 million and ~~3.2~~0.8 million shares for the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, respectively, as their effect would have been anti-dilutive.

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NOTE 9. ENVIRONMENTAL

We are party to various government and private environmental actions associated with past manufacturing facilities and former waste disposal sites. ~~Environmental provisions charged to income, which are included in costs of goods sold, were as follows:~~

Three Months Ended March 31,
2022 2021
($ in millions)
Provisions charged to income $ 5.6 $ 2.5
Recoveries for costs incurred and expensed — (2.2)
Environmental expense $ 5.6 $ 0.3

~~Environmental expense for the three months ended March 31, 2021 includes $2.2 million of insurance recoveries for environmental costs incurred and expensed in prior periods.~~ The condensed balance sheets included reserves for future environmental expenditures to investigate and remediate known sites amounting to ~~$149.5~~$146.7 million, ~~$147.3~~$146.6 million and ~~$147.2~~$149.5 million at March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, respectively, of which ~~$124.5~~$121.7 million, ~~$122.3~~$121.6 million and ~~$128.2~~$124.5 million, respectively, were classified as other noncurrent liabilities.

Environmental provisions charged to income, which are included in costs of goods sold, were $3.2 million and $5.6 million for the three months ended March 31, 2023 and 2022, respectively.

Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies, advances in technology, changes in environmental laws and regulations and their application, changes in regulatory authorities, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other Potentially Responsible Parties (PRPs), our ability to obtain contributions from other parties and the lengthy time periods over which site remediation occurs. It is possible that some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably to us, which could materially adversely affect our financial position or results of operations.

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NOTE 10. COMMITMENTS AND CONTINGENCIES

Olin, K.A. Steel Chemicals (a wholly owned subsidiary of Olin) and other caustic soda producers were named as defendants in six purported class action civil lawsuits filed March 22, 25 and 26, 2019 and April 12, 2019 in the U.S. District Court for the Western District of New ~~York~~York. Those cases were consolidated on May 22, 2019; the claims in the consolidated “Direct Purchaser” lawsuit, as modified, are on behalf of the respective named plaintiffs and a putative class comprised of all persons and entities who purchased certain types of caustic soda in the U.S. directly from one or more of the defendants, their parents, predecessors, subsidiaries or affiliates at any time on or after October 1, ~~2015.~~2015 through December 31, 2018. Olin, K.A. Steel Chemicals and other caustic soda producers were also named as defendants in two purported class action civil lawsuits filed July 25 and 29, 2019 in the U.S. District Court for the Western District of New York on behalf of the respective named plaintiffs and a putative class comprised of all persons and entities who purchased caustic soda in the U.S. indirectly from distributors at any time on or after October 1, 2015. Those cases were consolidated and a consolidated, amended complaint in the “Indirect Purchaser” lawsuit was filed on August 23, 2021. The other current defendants in the Direct Purchaser and Indirect Purchaser lawsuits are Occidental Chemical Corporation d/b/a OxyChem, Westlake Chemical Corporation, Shin-Etsu Chemical Co., Ltd., and Formosa Plastics Corporation, U.S.A. The Direct Purchaser and Indirect Purchaser lawsuits allege the defendants conspired to fix, raise, maintain and stabilize the price of caustic soda, restrict domestic (U.S.) supply of caustic soda and allocate caustic soda customers. Plaintiffs seek ~~an unspecified amount of~~ damages and injunctive relief.

Olin, K.A. Steel Chemical, Olin Canada ULC, 3229897 Nova Scotia Co. (wholly owned subsidiaries of Olin) and other alleged caustic soda producers were named as defendants in a proposed class action civil lawsuit filed on October 7, 2020 in the Quebec Superior Court (Province of Quebec) on behalf of the respective named plaintiff and a putative class comprised of all Canadian persons and entities who, between October 1, 2015 and the date of the eventual class action certification, directly or indirectly purchased caustic soda or products containing caustic soda, produced by one or more of the defendants. Olin, K.A. Steel Chemical, Olin Canada ULC, 3229897 Nova Scotia Co. and other alleged caustic soda producers were also named as defendants in a proposed class action civil lawsuit filed November 13, 2020 in the Federal Court of Canada on behalf of the respective named plaintiff and a putative class comprised of all legal persons in Canada who, at any time on or after October 1, 2015 to the present, directly or indirectly purchased caustic soda. The other defendants named in the two Canadian lawsuits are Occidental Petroleum Corporation, Occidental Chemical Corporation, Oxy Canada Sales, Inc., Westlake Chemical Corporation, Axiall Canada, Inc., Shin-Etsu Chemical Co., Ltd., Shintech Incorporated, Formosa Plastics Corporation, and Formosa Plastics Corporation, U.S.A. The lawsuits allege the defendants conspired to fix, raise, maintain control, and stabilize the price of caustic soda, divide and allocate markets, sales, customers and territories, fix, maintain, control, prevent, restrict, lessen or eliminate production and supply of caustic soda, and agree to idle capacity of production and/or refrain from increasing their production capacity. Plaintiffs seek ~~an unspecified amount of~~ damages, including punitive damages.

We believe we have meritorious legal positions and will continue to represent our interests vigorously in ~~this matter.~~the above matters. Any losses related to ~~this matter~~these matters are not currently estimable because of unresolved questions of fact and law, but if resolved unfavorably to Olin, could have a material adverse effect on our financial position, cash flows or results of operations.

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We, and our subsidiaries, are defendants in various other legal actions (including proceedings based on alleged exposures to asbestos) incidental to our past and current business activities. As of March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, our condensed balance sheets included accrued liabilities for these other legal actions of ~~$13.5~~$14.1 million, ~~$14.2~~$14.4 million and ~~$13.8~~$13.5 million, respectively. These liabilities do not include costs associated with legal representation. Based on our analysis, and considering the inherent uncertainties associated with litigation, we do not believe that it is reasonably possible that these other legal actions will materially adversely affect our financial position, cash flows or results of operations.

During the ordinary course of our business, contingencies arise resulting from an existing condition, situation or set of circumstances involving an uncertainty as to the realization of a possible gain contingency. In certain instances, such as environmental projects, we are responsible for managing the cleanup and remediation of an environmental site. There exists the possibility of recovering a portion of these costs from other parties. We account for gain contingencies in accordance with the provisions of ASC 450 “Contingencies” and, therefore, do not record gain contingencies and recognize income until it is earned and realizable.

NOTE 11. SHAREHOLDERS’ EQUITY

On ~~April 26, 2018,~~July 28, 2022, our ~~board~~Board of ~~directors~~Directors authorized a share repurchase program for the purchase of shares of common stock at an aggregate price of up to $500.0 million. This program terminated upon the purchase of $500.0 million of our common stock during the first quarter of 2022. On November 1, 2021, our board of directors authorized an additional share repurchase program for the purchase of shares of common stock at an aggregate price of up to $1.0 billion.$2.0 billion (the 2022 Repurchase Authorization). This program will terminate upon the purchase of ~~$1.0~~$2.0 billion of ~~our~~ common stock.

For the three months ended March 31, 2023 and 2022, 3.6 million and 5.2 million shares, respectively, of common stock were repurchased and retired at a total value of $206.1 million and $263.2 ~~million. There were zero shares repurchased for the three months ended March 31, 2021.~~million, respectively. As of March 31,

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2022, a total of 15.7 million shares of common stock were repurchased and retired at a total value of $500.0 million under the 2018 Repurchase Authorization program, terminating the program. As of March 31, 2022, 4.3 2023, 9.6 million shares of common stock have been repurchased and retired at a total value of ~~$211.0~~$502.8 million under the ~~2021~~2022 Repurchase Authorization program, and ~~$789.0~~$1,497.2 million of common stock remained authorized to be repurchased under the program.

We issued ~~0.2~~0.4 million and ~~1.2~~0.2 million shares representing stock options exercised for the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, respectively, with a total value of ~~$5.2~~$11.2 million and ~~$25.7~~$5.2 million, respectively.

The following table represents the activity included in accumulated other comprehensive loss:


		Foreign Currency Translation Adjustment (net of taxes)		Unrealized (Losses) Gains on Derivative Contracts (net of taxes)		Pension and Other Postretirement Benefits (net of taxes)		Accumulated Other Comprehensive Loss			Foreign Currency Translation Adjustment		Unrealized (Losses) Gains on Derivative Contracts (net of taxes)		Pension and Other Postretirement Benefits (net of taxes)		Accumulated Other Comprehensive Loss
		($ in millions)									($ in millions)
Balance at January 1, 2021		$	19.4	$	21.4	$	(730.7)	$	(689.9)

Unrealized (losses) gains		(11.4)		122.0		—		110.6

Reclassification adjustments of (gains) losses into income		—		(112.8)		13.7		(99.1)

Tax provision		—		(2.2)		(3.1)		(5.3)

Net change		(11.4)		7.0		10.6		6.2
Balance at March 31, 2021		$	8.0	$	28.4	$	(720.1)	$	(683.7)
Balance at January 1, 2022	Balance at January 1, 2022	$	(10.9)	$	22.8	$	(499.9)	$	(488.0)	Balance at January 1, 2022	$	(10.9)	$	22.8	$	(499.9)	$	(488.0)

Unrealized (losses) gains	Unrealized (losses) gains	(10.5)		52.8		—		42.3		Unrealized (losses) gains	(10.5)		52.8		—		42.3

Reclassification adjustments of (gains) losses into income	Reclassification adjustments of (gains) losses into income	—		(12.4)		8.9		(3.5)		Reclassification adjustments of (gains) losses into income	—		(12.4)		8.9		(3.5)

Tax provision	Tax provision	—		(9.7)		(2.3)		(12.0)		Tax provision	—		(9.7)		(2.3)		(12.0)

Net change	Net change	(10.5)		30.7		6.6		26.8		Net change	(10.5)		30.7		6.6		26.8
Balance at March 31, 2022	Balance at March 31, 2022	$	(21.4)	$	53.5	$	(493.3)	$	(461.2)	Balance at March 31, 2022	$	(21.4)	$	53.5	$	(493.3)	$	(461.2)
Balance at January 1, 2023										Balance at January 1, 2023	$	(38.6)	$	(32.5)	$	(424.8)	$	(495.9)

Unrealized gains (losses)										Unrealized gains (losses)	5.5		(20.8)		—		(15.3)

Reclassification adjustments of losses into income										Reclassification adjustments of losses into income	—		30.7		0.4		31.1

Tax provision										Tax provision	—		(2.5)		(0.1)		(2.6)

Net change										Net change	5.5		7.4		0.3		13.2
Balance at March 31, 2023										Balance at March 31, 2023	$	(33.1)	$	(25.1)	$	(424.5)	$	(482.7)

Net income and cost of goods sold included reclassification adjustments for realized gains and losses on derivative contracts from accumulated other comprehensive loss.

Net income and non-operating pension income included the amortization of prior service costs and actuarial losses from accumulated other comprehensive loss.

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NOTE 12. SEGMENT INFORMATION

We define segment results as income (loss) before interest expense, interest income, other operating income (expense), non-operating pension income, other income and income taxes. We have three operating segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. The three operating segments reflect the organization used by our management for purposes of allocating resources and assessing performance. Chlorine and caustic soda used in our Epoxy segment is transferred at cost from the Chlor Alkali Products and Vinyls segment. Sales are attributed to geographic areas based on customer location.


		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
Sales:	Sales:		($ in millions)				Sales:		($ in millions)
Chlor Alkali Products and Vinyls	Chlor Alkali Products and Vinyls		$	1,245.2	$	867.0	Chlor Alkali Products and Vinyls		$	1,117.1	$	1,245.2
Epoxy	Epoxy		789.5		662.6		Epoxy		360.7		789.5
Winchester	Winchester		426.7		389.2		Winchester		366.5		426.7
Total sales	Total sales		$	2,461.4	$	1,918.8	Total sales		$	1,844.3	$	2,461.4
Income before taxes:	Income before taxes:						Income before taxes:
Chlor Alkali Products and Vinyls	Chlor Alkali Products and Vinyls		$	328.6	$	271.1	Chlor Alkali Products and Vinyls		$	245.9	$	328.6
Epoxy	Epoxy		138.0		65.2		Epoxy		21.4		138.0
Winchester	Winchester		118.9		85.1		Winchester		61.0		118.9
Corporate/other:	Corporate/other:						Corporate/other:
Environmental expense	Environmental expense		(5.6)		(0.3)		Environmental expense		(3.2)		(5.6)
Other corporate and unallocated costs	Other corporate and unallocated costs		(30.3)		(33.0)		Other corporate and unallocated costs		(34.3)		(30.3)
Restructuring charges	Restructuring charges		(3.1)		(6.9)		Restructuring charges		(60.9)		(3.1)
Other operating income							Other operating income		0.5		—
Interest expense	Interest expense		(32.9)		(84.5)		Interest expense		(42.4)		(32.9)
Interest income	Interest income		0.4		0.1		Interest income		1.1		0.4
Non-operating pension income	Non-operating pension income		9.6		9.3		Non-operating pension income		5.7		9.6
Income before taxes	Income before taxes		$	523.6	$	306.1	Income before taxes		$	194.8	$	523.6

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		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
Sales by geography:	Sales by geography:		($ in millions)				Sales by geography:		($ in millions)
Chlor Alkali Products and Vinyls	Chlor Alkali Products and Vinyls						Chlor Alkali Products and Vinyls
United States	United States		$	819.4	$	577.0	United States		$	766.5	$	819.4
Europe	Europe		70.4		29.5		Europe		72.4		70.4
Other foreign	Other foreign		355.4		260.5		Other foreign		278.2		355.4
Total Chlor Alkali Products and Vinyls	Total Chlor Alkali Products and Vinyls		1,245.2		867.0		Total Chlor Alkali Products and Vinyls		1,117.1		1,245.2
Epoxy	Epoxy						Epoxy
United States	United States		242.8		158.3		United States		151.6		242.8
Europe	Europe		359.0		320.0		Europe		96.6		359.0
Other foreign	Other foreign		187.7		184.3		Other foreign		112.5		187.7
Total Epoxy	Total Epoxy		789.5		662.6		Total Epoxy		360.7		789.5
Winchester	Winchester						Winchester
United States	United States		401.9		365.0		United States		329.9		401.9
Europe	Europe		2.7		3.8		Europe		7.9		2.7
Other foreign	Other foreign		22.1		20.4		Other foreign		28.7		22.1
Total Winchester	Total Winchester		426.7		389.2		Total Winchester		366.5		426.7
Total	Total						Total
United States	United States		1,464.1		1,100.3		United States		1,248.0		1,464.1
Europe	Europe		432.1		353.3		Europe		176.9		432.1
Other foreign	Other foreign		565.2		465.2		Other foreign		419.4		565.2
Total sales	Total sales		$	2,461.4	$	1,918.8	Total sales		$	1,844.3	$	2,461.4


		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
Sales by product line:	Sales by product line:		($ in millions)				Sales by product line:		($ in millions)
Chlor Alkali Products and Vinyls	Chlor Alkali Products and Vinyls						Chlor Alkali Products and Vinyls
Caustic soda	Caustic soda		$	518.9	$	347.0	Caustic soda		$	546.8	$	518.9
Chlorine, chlorine-derivatives and other co-products			726.3		520.0
Chlorine, chlorine-derivatives and other products							Chlorine, chlorine-derivatives and other products		570.3		726.3
Total Chlor Alkali Products and Vinyls	Total Chlor Alkali Products and Vinyls		1,245.2		867.0		Total Chlor Alkali Products and Vinyls		1,117.1		1,245.2
Epoxy	Epoxy						Epoxy
Aromatics and allylics	Aromatics and allylics		392.0		312.0		Aromatics and allylics		142.3		392.0
Epoxy resins	Epoxy resins		397.5		350.6		Epoxy resins		218.4		397.5
Total Epoxy	Total Epoxy		789.5		662.6		Total Epoxy		360.7		789.5
Winchester	Winchester						Winchester
Commercial	Commercial		314.2		261.0		Commercial		200.5		314.2
Military and law enforcement	Military and law enforcement		112.5		128.2		Military and law enforcement		166.0		112.5
Total Winchester	Total Winchester		426.7		389.2		Total Winchester		366.5		426.7
Total sales	Total sales		$	2,461.4	$	1,918.8	Total sales		$	1,844.3	$	2,461.4

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NOTE 13. STOCK-BASED COMPENSATION

Stock-based compensation granted includes stock options, performance stock awards, restricted stock awards and deferred directors’ compensation. Stock-based compensation expense (benefit) was as follows:


		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
			($ in millions)						($ in millions)
Stock-based compensation	Stock-based compensation		$	4.7	$	4.7	Stock-based compensation		$	4.5	$	4.7
Mark-to-market adjustments	Mark-to-market adjustments		(2.9)		8.1		Mark-to-market adjustments		1.5		(2.9)
Total expense	Total expense		$	1.8	$	12.8	Total expense		$	6.0	$	1.8

The fair value of each stock option granted, which typically vests ratably over three years, but not less than one year, was estimated on the date of grant, using the Black-Scholes option-pricing model with the following weighted-average assumptions:


Grant date	Grant date	2022			Grant date	2023			2022
Dividend yield	Dividend yield	1.60		%	Dividend yield	1.32		%	1.60		%
Risk-free interest rate	Risk-free interest rate	1.93		%	Risk-free interest rate	4.07		%	1.93		%
Expected volatility of Olin common stock	Expected volatility of Olin common stock	48		%	Expected volatility of Olin common stock	47		%	48		%
Expected life (years)	Expected life (years)	7.0			Expected life (years)	7.0
Weighted-average grant fair value (per option)	Weighted-average grant fair value (per option)	$	21.18		Weighted-average grant fair value (per option)	$	28.74		$	21.18
Weighted-average exercise price	Weighted-average exercise price	$	49.71		Weighted-average exercise price	$	60.55		$	49.71
Options granted	Options granted	729,600			Options granted	562,124			729,600

Dividend yield was based on our current dividend yield as of the option grant date. Risk-free interest rate was based on zero coupon U.S. Treasury securities rates for the expected life of the options. Expected volatility ~~of Olin common stock~~ was based on our historical stock price movements, as we believe that historical experience is the best available indicator of the expected volatility. Expected life of the option grant was based on historical exercise and cancellation patterns, as we believe that historical experience is the best estimate offor future exercise patterns.

Performance share awards are denominated in shares of our stock and are paid half in cash and half in stock. Payouts for performance share awards are based on two criteria: (1) 50% of the award is based on Olin’s total shareholder returns (TSR) over the applicable ~~3-year~~three-year performance cycle in relation to the TSR over the same period among a portfolio of public companies which are selected in concert with outside compensation consultants and (2) 50% of the award is based on Olin’s net income over the applicable ~~3-year~~three-year performance cycle in relation to the net income goal for such period as set by the compensation committee of Olin’s board of directors. The expense associated with performance shares is recorded based on our estimate of our performance relative to the respective target. If an employee leaves the company before the end of the performance cycle, the performance shares may be prorated based on the number of months of the performance cycle worked and are settled in cash instead of half in cash and half in stock when the three-year performance cycle is completed.

The fair value of each performance ~~stock~~share award based on net income was estimated on the date of grant, using the current stock price. The fair value of each performance ~~stock~~share award based on TSR was estimated on the date of grant, using a Monte Carlo simulation model with the following weighted average assumptions:


Grant date	Grant date	2022			Grant date	2023			2022
Risk-free interest rate	Risk-free interest rate	1.74		%	Risk-free interest rate	4.46		%	1.74		%
Expected volatility of Olin common stock	Expected volatility of Olin common stock	59		%	Expected volatility of Olin common stock	52		%	59		%
Expected average volatility of peer companies	Expected average volatility of peer companies	47		%	Expected average volatility of peer companies	42		%	47		%
Average correlation coefficient of peer companies	Average correlation coefficient of peer companies	0.51			Average correlation coefficient of peer companies	0.51
Expected life (years)	Expected life (years)	3.0			Expected life (years)	3.0
Grant date fair value (TSR based award)	Grant date fair value (TSR based award)	$	64.13		Grant date fair value (TSR based award)	$	86.98		$	64.13
Grant date fair value (net income based award)	Grant date fair value (net income based award)	$	49.71		Grant date fair value (net income based award)	$	60.55		$	49.71
Awards granted	Awards granted	184,000			Awards granted	161,474			184,000

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Risk-free interest rate was based on zero coupon U.S. Treasury securities rates for the expected life of the performance stock awards. Expected volatility of Olin common stock and peer companies was based on historical stock price movements, as

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we believe that historical experience is the best available indicator of the expected volatility. The average correlation coefficient of peer companies was determined based on historical trends of Olin’s common stock price compared to the peer companies. Expected life of the performance ~~stock~~share award grant was based on historical exercise and cancellation patterns, as we believe that historical experience is the best estimate of future exercise patterns.

NOTE 14. DEBT


	Long-term Debt Borrowings (Repayments)
	Three Months Ended March 31, 2023		Three Months Ended March 31, 2022
Debt Instrument	($ in millions)
Borrowings:
Senior Revolving Credit Facility	140.0		—
Receivables Financing Agreement	150.0		65.0
Total borrowings	$	290.0	$	65.0
Repayments:
Senior Term Loan	(2.2)		—
Receivables Financing Agreement	(95.0)		(65.0)
Finance leases	(0.2)		(0.2)
Total repayments	$	(97.4)	$	(65.2)
Long-term debt borrowings (repayments), net	$	192.6	$	(0.2)

Senior Credit Facility

On ~~February 24, 2021,~~October 11, 2022, we entered into a ~~$1,615.0~~new $1,550.0 million senior ~~secured~~ credit facility (Senior Credit Facility) that ~~amended~~replaced our ~~existing $1,300.0 million~~previous senior ~~secured~~ credit ~~facility. On July 28, 2021, the liens on the collateral provided under the~~facility (2021 Senior Credit ~~Facility were released based on the achievement~~Facility), which included outstanding term loans of ~~a net leverage ratio below 3.50 for the prior two consecutive fiscal quarters. The Senior Credit Facility includes a senior delayed-draw term loan facility with aggregate commitments of $315.0~~$350.0 million ~~(Delayed Draw Term Loan), a senior term loan facility with aggregate commitments of $500.0 million (2020 Term Loan and together with the Delayed Draw Term Loan, the Senior Term Loans)~~ and a senior revolving credit facility with aggregate commitments in an amount equal to $800.0 million. The Senior Credit Facility includes a senior term loan facility with aggregate commitments of $350.0 million (Term Loan Facility) and a senior revolving credit facility with aggregate commitments of $1,200.0 million (Senior Revolving Credit Facility). The Term Loan Facility was fully drawn on the closing date with the proceeds of the Term Loan Facility used to refinance the loans and commitments outstanding under the 2021 Senior Credit Facility. The Term Loan Facility requires principal amortization amounts payable beginning March 31, 2023 at a rate of 0.625% per quarter through the end of 2024, increasing to 1.250% per quarter thereafter until maturity. The maturity date for the Senior Credit Facility is ~~July 16, 2024. The amendment modified the pricing grid for the Senior Credit Facility by reducing applicable interest rates on the borrowings under the facility.~~October 11, 2027.

On March 30, 2021, Olin drew the entire $315.0 million of the Delayed Draw Term Loan and used the proceeds to fund the redemption of the 10.00% senior notes due October 15, 2025 (2025 Notes). During 2021, we repaid $465.0 million of the Senior Term Loans. These repayments satisfied all future required quarterly installments of the Senior Term Loans. The Senior Revolving Credit Facility includes a $100.0 million letter of credit subfacility. At March 31, ~~2022,~~2023, we had ~~$799.6~~$1,059.6 million available under our ~~$800.0~~$1,200.0 million Senior Revolving Credit Facility because we had $140.0 million borrowed under the facility and issued $0.4 million of letters of credit.

Under the Senior Credit Facility, we may select various floating-rate borrowing options. The actual interest rate paid on borrowings under the Senior Credit Facility is based on a pricing grid which is dependent upon the net leverage ratio as calculated under the terms of the applicable facility for the prior fiscal quarter. The Senior Credit Facility includes various customary restrictive covenants, including restrictions related to the ratio of debt to earnings before interest expense, taxes, depreciation and amortization (net leverage ratio) and the ratio of earnings before interest expense, taxes, depreciation and amortization to interest expense (coverage ratio). The calculation of debt in our net leverage ratio excludes borrowings under the Receivables Financing Agreement, up to a maximum of $250.0 million, and is reduced by all unrestricted cash and cash equivalents. Compliance with these covenants is determined quarterly. We were in compliance with all covenants and restrictions under all our outstanding credit agreements as of March 31, ~~2022,~~2023, and no event of default had occurred that would permit the lenders under our outstanding credit agreements to accelerate the debt if not cured. In the future, our ability to generate sufficient operating cash flows, among other factors, will determine the amounts available to be borrowed under these facilities. As a result of our restrictive covenant related to the net leverage ratio, the maximum additional borrowings available to us could be limited in the future. The limitation, if an amendment or waiver from our lenders is not obtained, could restrict our ability to borrow the maximum amounts available under the Senior Revolving Credit Facility and the Receivables Financing Agreement. As of March 31, ~~2022,~~2023, there were no covenants or other restrictions that limited our ability to borrow.

~~Other Financing~~

Interest expense for the three months ended March 31, 2021 included a loss on extinguishment of debt of $23.5 million, which included $18.7 million of bond redemption premiums and $4.8 million for write-off of deferred debt issuance costs and recognition of deferred fair value interest rate swap losses related to financing transactions during first quarter 2021. The cash payments related to the early redemption premiums for the debt extinguishments are classified as cash outflows from financing activities on the consolidated statements of cash flows for the three months ended March 31, 2021. The condensed statement of cash flows reflects a correction to the loss on debt extinguishment and early redemption premiums from the previously issued condensed statement of cash flows for the three months ended March 31, 2021, which increased cash flows from net operating activities and decreased cash flows from net financing activities by $18.7 million.

~~For the three months ended March 31, 2021, we paid debt issuance costs of $3.1 million primarily for the amendments to our Senior Credit Facility.~~

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NOTE 15. CONTRIBUTING EMPLOYEE OWNERSHIP PLAN

The Contributing Employee Ownership Plan (CEOP) is a defined contribution plan available to essentially all domestic employees. We provide a contribution to an individual retirement contribution account maintained with the CEOP equal to an amount of between 5.0% and 7.5% of the employee’s eligible compensation. The defined contribution plan expense for the three months ended March 31, 2023 and 2022 ~~and 2021~~ was~~$10.6~~ $11.6 million and ~~$8.7~~$10.6 million, respectively.

Company matching contributions are invested in the same investment allocation as the employee’s contribution. Our matching contributions for eligible employees for the three months ended March 31, 2023 and 2022 ~~and 2021~~ were ~~$3.1~~$3.7 million and ~~$3.2~~$3.1 million, respectively.

NOTE 16. PENSION PLANS AND RETIREMENT BENEFITS

We sponsor domestic and foreign defined benefit pension plans for eligible employees and retirees. Most of our domestic employees participate in defined contribution plans. However, a portion of our bargaining hourly employees continue to participate in our domestic qualified defined benefit pension plans under a flat-benefit formula. Our funding policy for the qualified defined benefit pension plans is consistent with the requirements of federal laws and regulations. Our foreign subsidiaries maintain pension and other benefit plans, which are consistent with local statutory practices.

Our domestic qualified defined benefit pension plan provides that if, within three years following a change of control of Olin, any corporate action is taken or filing made in contemplation of, among other things, a plan termination or merger or other transfer of assets or liabilities of the plan, and such termination, merger, or transfer thereafter takes place, plan benefits would automatically be increased for affected participants (and retired participants) to absorb any plan surplus (subject to applicable collective bargaining requirements).

We also provide certain postretirement healthcare (medical) and life insurance benefits for eligible active and retired domestic employees. The healthcare plans are contributory with participants’ contributions adjusted annually based on medical rates of inflation and plan experience.


		Pension Benefits				Other Postretirement Benefits					Pension Benefits				Other Postretirement Benefits
		Three Months Ended March 31,				Three Months Ended March 31,					Three Months Ended March 31,				Three Months Ended March 31,
		2022		2021		2022		2021			2023		2022		2023		2022
Components of Net Periodic Benefit (Income) Cost	Components of Net Periodic Benefit (Income) Cost	($ in millions)								Components of Net Periodic Benefit (Income) Cost	($ in millions)
Service cost	Service cost	$	2.3	$	3.0	$	0.3	$	0.4	Service cost	$	1.4	$	2.3	$	0.2	$	0.3
Interest cost	Interest cost	15.4		12.8		0.3		0.3		Interest cost	26.3		15.4		0.5		0.3
Expected return on plans’ assets	Expected return on plans’ assets	(34.2)		(36.1)		—		—		Expected return on plans’ assets	(32.9)		(34.2)		—		—
Amortization of prior service cost	Amortization of prior service cost	(0.2)		(0.1)		—		—		Amortization of prior service cost	(0.1)		(0.2)		—		—
Recognized actuarial loss	Recognized actuarial loss	8.6		13.1		0.5		0.7		Recognized actuarial loss	0.3		8.6		0.2		0.5
Net periodic benefit (income) cost	Net periodic benefit (income) cost	$	(8.1)	$	(7.3)	$	1.1	$	1.4	Net periodic benefit (income) cost	$	(5.0)	$	(8.1)	$	0.9	$	1.1

We made cash contributions to our international qualified defined benefit pension plans of ~~$0.4~~$0.8 million and ~~$0.1~~$0.4 million for the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, respectively.

NOTE 17. INCOME TAXES

The effective tax rate for the three months ended March 31, 2023 included a benefit associated with stock-based compensation, a benefit from remeasurement of deferred taxes due to a decrease in our state effective tax rates, a benefit associated with prior year tax positions, an expense from a net increase in the valuation allowance related to deferred tax assets in foreign jurisdictions, and an expense from a change in tax contingencies, resulting in a net $5.2 million tax benefit. After giving consideration to these items, the effective tax rate for the three months ended March 31, 2023 of 23.6% was higher than the 21% U.S. federal statutory rate primarily due to state and foreign income taxes and an increase in the valuation allowance related to losses in foreign jurisdictions, partially offset by favorable permanent salt depletion deductions. The effective tax rate for the three months ended March 31, 2022 included a benefit associated with prior year tax, stock-based compensation and a change in tax contingencies, resulting in a net $2.3 million tax benefit. After giving consideration to these items, the effective

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tax rate for the three months ended March 31, 2022 of 25.4% was higher than the 21% U.S. federal statutory rate primarily due to state and foreign income taxes, partially offset by foreign income exclusions and a favorable permanent salt depletion deductions. ~~The effective tax rate for the three months ended~~

As of March 31, ~~2021 included a benefit associated with prior year~~2023, we had $54.8 million of gross unrecognized tax positions, a benefit associated with stock-based compensation, an expense from remeasurement of deferred taxes due to an increase in our state effective tax rates and an expense from a change in tax contingencies. These factors resulted inbenefits, which would have a net ~~$1.3~~$53.2 million ~~tax benefit. After giving consideration to these items,~~impact on the effective tax rate, ~~for the three months ended March 31, 2021 of 20.8% was lower than the 21% U.S. federal statutory rate primarily due to a net decrease in~~

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the valuation allowance related to losses in foreign jurisdictions and favorable permanent salt depletion deductions, partially offset by state taxes, foreign income inclusions and foreign income taxes.

if recognized. As of March 31, 2022, we had $45.1 million of gross unrecognized tax benefits, ~~which would have a net $44.6 million impact on the effective tax rate, if recognized. As of March 31, 2021, we had $21.6 million of gross unrecognized tax benefits,~~ of which ~~$21.5~~$44.6 million would have impacted the effective tax rate, if recognized. The ~~amount~~amounts of unrecognized tax benefits ~~was~~were as follows:


		March 31,					March 31,
		2022		2021			2023		2022
		($ in millions)					($ in millions)
Balance at beginning of year	Balance at beginning of year	$	43.4	$	21.3	Balance at beginning of year	$	51.6	$	43.4
Decreases for prior year tax positions	Decreases for prior year tax positions	(0.7)		—		Decreases for prior year tax positions	—		(0.7)
Increases for current year tax positions	Increases for current year tax positions	3.1		0.3		Increases for current year tax positions	2.8		3.1
Foreign currency translation adjustments	Foreign currency translation adjustments	(0.7)		—		Foreign currency translation adjustments	0.4		(0.7)
Balance at end of period	Balance at end of period	$	45.1	$	21.6	Balance at end of period	$	54.8	$	45.1

As of March 31, ~~2022,~~2023, we believe it is reasonably possible that our total amount of unrecognized tax benefits will decrease by approximately ~~$12.9~~$18.6 million over the next twelve months. The anticipated reduction primarily relates to settlements with taxing authorities and the expiration of federal, state and foreign statutes of limitation.

We operate globally and file income tax returns in numerous jurisdictions. Our tax returns are subject to examination by various federal, state and local tax authorities. ~~Examinations~~Additionally, examinations are ongoing in various states and foreign jurisdictions. We believe we have adequately provided for all tax positions; however, amounts asserted by taxing authorities could be greater than our accrued position. For our primary tax jurisdictions, the tax years that remain subject to examination are as follows:


			Tax Years
U.S. federal income tax			~~2017~~2018 - ~~2021~~2022
U.S. state income tax			2012 - ~~2021~~2022
Canadian federal income tax			~~2014~~2016 - ~~2021~~2022
Brazil			~~2015~~2016 - ~~2021~~2022
Germany			2015 - ~~2021~~2022
China			2014 - ~~2021~~2022
The Netherlands			~~2015~~2016 - ~~2021~~2022

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NOTE 18. DERIVATIVE FINANCIAL INSTRUMENTS

We are exposed to market risk in the normal course of our business operations due to our purchases of certain commodities, our ongoing investing and financing activities and our operations that use foreign currencies. The risk of loss can be assessed from the perspective of adverse changes in fair values, cash flows and future earnings. We have established policies and procedures governing our management of market risks and the use of financial instruments to manage exposure to such risks. ASC 815 “Derivatives and Hedging” (ASC 815) requires an entity to recognize all derivatives as either assets or liabilities in the condensed balance sheets and measure those instruments at fair value. In accordance with ASC 815, we designate derivative contracts as cash flow hedges of forecasted purchases of commodities and forecasted interest payments related to variable-rate borrowings and designate certain interest rate swaps as fair value hedges of fixed-rate borrowings. We do not enter into any derivative instruments for trading or speculative purposes.

We actively manage currency exposures that are associated with net monetary asset positions, currency purchases and sales commitments denominated in foreign currencies and foreign currency denominated assets and liabilities created in the normal course of business. We enter into forward sales and purchase contracts to manage currency risk to offset our net exposures, by currency, related to the foreign currency denominated monetary assets and liabilities of our operations. At March 31, ~~2022,~~2023, we had outstanding forward contracts to buy foreign currency with a notional value of ~~$259.2~~$352.5 million and to sell foreign currency with a notional value of ~~$120.6~~$147.6 million. All of the currency derivatives expire within one year and are for U.S. dollar (USD) equivalents. The counterparties to the forward contracts are large financial institutions; however, the risk of loss to us in the event of nonperformance by a counterparty could be significant to our financial position or results of operations. At December 31, ~~2021,~~2022, we had outstanding forward contracts to buy foreign currency with a notional value of ~~$199.0~~$275.8 million and to sell foreign currency with a notional value of ~~$124.4~~$110.7 million. At March 31, ~~2021,~~2022, we had outstanding forward contracts to buy foreign currency with a notional value of ~~$212.3~~$259.2 million and to sell foreign currency with a notional value of ~~$110.8~~$120.6 million.

Cash Flow Hedges

For derivative instruments that are designated and qualify as a cash flow hedge, the change in fair value of the derivative is recognized as a component of other comprehensive income (loss) until the hedged item is recognized in earnings.

We had the following notional amounts of outstanding commodity contracts that were entered into to hedge forecasted purchases:


		March 31, 2022		December 31, 2021		March 31, 2021			March 31, 2023		December 31, 2022		March 31, 2022
		($ in millions)							($ in millions)
Natural gas	Natural gas	$	51.0	$	37.7	$	56.8	Natural gas	$	94.1	$	107.6	$	51.0
Ethane	Ethane	41.2		60.3		47.0		Ethane	37.8		46.0		41.2
Metals	Metals	112.5		126.3		134.3		Metals	88.7		107.6		112.5
Total notional	Total notional	$	204.7	$	224.3	$	238.1	Total notional	$	220.6	$	261.2	$	204.7

As of March 31, ~~2022,~~2023, the counterparties to these commodity contracts were Wells Fargo Bank, N.A., Citibank, N.A., JPMorgan Chase Bank, National Association and Bank of America Corporation, all of which are major financial institutions.

We use cash flow hedges for certain raw material and energy costs such as copper, zinc, lead, ethane, electricity and natural gas to provide a measure of stability in managing our exposure to price fluctuations associated with forecasted purchases of raw materials and energy used in our manufacturing process. At March 31, ~~2022,~~2023, we had open derivative contract positions through ~~2027.~~2028. If all open futures contracts had been settled on March 31, ~~2022,~~2023, we would have recognized a pretax ~~gain~~loss of ~~$70.7~~$33.6 million.

If commodity prices were to remain at March 31, ~~2022~~2023 levels, approximately ~~$46.8~~$23.2 million of deferred ~~gains,~~losses, net of tax, would be reclassified into earnings during the next twelve months. The actual effect on earnings will be dependent on actual commodity prices when the forecasted transactions occur.

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Fair Value Hedges

We use interest rate swaps as a means of managing interest expense and floating interest rate exposure to optimal levels. For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings. We include the gain or loss on the hedged items (fixed-rate borrowings) in the same line item, interest expense, as the offsetting loss or gain on the related interest rate swaps.

In 2021, we redeemed the 2025 Notes, which resulted in recognition of the outstanding deferred swap loss. For the three months ended March 31, 2021, $1.2 million of expense was recorded to interest expense on the accompanying condensed statements of operations related to these swap agreements.

Financial Statement Impacts

We present our derivative assets and liabilities in our condensed balance sheets on a net basis whenever we have a legally enforceable master netting agreement with the counterparty to our derivative contracts. We use these agreements to manage and substantially reduce our potential counterparty credit risk.

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The following table summarizes the location and fair value of the derivative instruments on our condensed balance sheets. The table disaggregates our net derivative assets and liabilities into gross components on a contract-by-contract basis before giving effect to master netting arrangements:


		March 31, 2022		December 31, 2021		March 31, 2021			March 31, 2023		December 31, 2022		March 31, 2022
		($ in millions)							($ in millions)
Asset derivatives:	Asset derivatives:							Asset derivatives:
Other current assets	Other current assets							Other current assets
Derivatives designated as hedging instruments:	Derivatives designated as hedging instruments:							Derivatives designated as hedging instruments:
Commodity contracts - gains	Commodity contracts - gains	$	61.5	$	31.8	$	29.6	Commodity contracts - gains	$	5.1	$	2.4	$	61.5
Commodity contracts - losses	Commodity contracts - losses	—		(6.2)		(1.1)		Commodity contracts - losses	(1.8)		(0.9)		—
Derivatives not designated as hedging instruments:	Derivatives not designated as hedging instruments:							Derivatives not designated as hedging instruments:
Foreign exchange contracts - gains	Foreign exchange contracts - gains	0.3		2.0		0.6		Foreign exchange contracts - gains	2.6		0.3		0.3
Foreign exchange contracts - losses	Foreign exchange contracts - losses	—		(0.8)		(0.2)		Foreign exchange contracts - losses	(1.0)		—		—
Total other current assets	Total other current assets	61.8		26.8		28.9		Total other current assets	4.9		1.8		61.8
Other assets	Other assets							Other assets
Derivatives designated as hedging instruments:	Derivatives designated as hedging instruments:							Derivatives designated as hedging instruments:
Commodity contracts - gains	Commodity contracts - gains	9.9		7.9		9.7		Commodity contracts - gains	4.8		4.0		9.9
Commodity contracts - losses		—		—		(0.1)

Total other assets	Total other assets	9.9		7.9		9.6		Total other assets	4.8		4.0		9.9
Total asset derivatives(1)	Total asset derivatives(1)	$	71.7	$	34.7	$	38.5	Total asset derivatives(1)	$	9.7	$	5.8	$	71.7
Liability derivatives:	Liability derivatives:							Liability derivatives:
Accrued liabilities	Accrued liabilities							Accrued liabilities
Derivatives designated as hedging instruments:	Derivatives designated as hedging instruments:							Derivatives designated as hedging instruments:
Commodity contracts - losses	Commodity contracts - losses	$	—	$	3.6	$	0.3	Commodity contracts - losses	$	34.3	$	43.3	$	—
Commodity contracts - gains	Commodity contracts - gains	—		(0.7)		—		Commodity contracts - gains	(0.5)		(1.7)		—
Derivatives not designated as hedging instruments:	Derivatives not designated as hedging instruments:							Derivatives not designated as hedging instruments:
Foreign exchange contracts - losses	Foreign exchange contracts - losses	4.2		0.7		3.4		Foreign exchange contracts - losses	2.4		1.7		4.2
Foreign exchange contracts - gains	Foreign exchange contracts - gains	(1.1)		(0.1)		(0.7)		Foreign exchange contracts - gains	(0.8)		(0.8)		(1.1)
Total accrued liabilities	Total accrued liabilities	3.1		3.5		3.0		Total accrued liabilities	35.4		42.5		3.1
Other liabilities	Other liabilities							Other liabilities
Derivatives designated as hedging instruments:	Derivatives designated as hedging instruments:							Derivatives designated as hedging instruments:
Commodity contracts - losses	Commodity contracts - losses	0.9		0.3		0.3		Commodity contracts - losses	8.2		8.0		0.9
Commodity contracts - gains	Commodity contracts - gains	(0.2)		—		(0.1)		Commodity contracts - gains	(0.3)		(0.6)		(0.2)
Total other liabilities	Total other liabilities	0.7		0.3		0.2		Total other liabilities	7.9		7.4		0.7
Total liability derivatives(1)	Total liability derivatives(1)	$	3.8	$	3.8	$	3.2	Total liability derivatives(1)	$	43.3	$	49.9	$	3.8

(1) Does not include the impact of cash collateral received from or provided to counterparties.

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The following table summarizes the effects of derivative instruments on our condensed statements of operations:


				Amount of Gain (Loss)								Amount of Gain (Loss)
			Three Months Ended March 31,								Three Months Ended March 31,
		Location of Gain (Loss)			2022		2021			Location of Gain (Loss)			2023		2022
Derivatives – Cash Flow Hedges	Derivatives – Cash Flow Hedges			($ in millions)					Derivatives – Cash Flow Hedges			($ in millions)
Recognized in other comprehensive loss:	Recognized in other comprehensive loss:								Recognized in other comprehensive loss:
Commodity contracts	Commodity contracts	———			$	52.8	$	122.0	Commodity contracts	———			$	(20.8)	$	52.8
Reclassified from accumulated other comprehensive loss into income:	Reclassified from accumulated other comprehensive loss into income:								Reclassified from accumulated other comprehensive loss into income:
Commodity contracts	Commodity contracts	Cost of goods sold			$	12.4	$	112.8	Commodity contracts	Cost of goods sold			$	(30.7)	$	12.4
Derivatives – Fair Value Hedges
Interest rate contracts		Interest expense			$	—	$	(1.2)

Derivatives Not Designated as Hedging Instruments	Derivatives Not Designated as Hedging Instruments								Derivatives Not Designated as Hedging Instruments
Commodity contracts	Commodity contracts	Cost of goods sold			$	0.5	$	—	Commodity contracts	Cost of goods sold			$	(0.6)	$	0.5
Foreign exchange contracts	Foreign exchange contracts	Selling and administration			$	—	$	(2.0)	Foreign exchange contracts	Selling and administration			$	(1.4)	$	(18.6)

Credit Risk and Collateral

By using derivative instruments, we are exposed to credit and market risk. If a counterparty fails to fulfill its performance obligations under a derivative contract, our credit risk will equal the fair value gain in a derivative. Generally, when the fair value of a derivative contract is positive, this indicates that the counterparty owes us, thus creating a repayment risk for us. When the fair value of a derivative contract is negative, we owe the counterparty and, therefore, assume no repayment risk. We minimize the credit (or repayment) risk in derivative instruments by entering into transactions with high-quality counterparties. We monitor our positions and the credit ratings of our counterparties, and we do not anticipate non-performance by the counterparties.

Based on the agreements with our various counterparties, cash collateral is required to be provided when the net fair value of the derivatives, with the counterparty, exceeds a specific threshold. If the threshold is exceeded, cash is either provided by the counterparty to us if the value of the derivatives is our asset, or cash is provided by us to the counterparty if the value of the derivatives is our liability. As of March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, this threshold was not exceeded. In all instances where we are party to a master netting agreement, we offset the receivable or payable recognized upon payment of cash collateral against the fair value amounts recognized for derivative instruments that have also been offset under such master netting agreements.

NOTE 19. FAIR VALUE MEASUREMENTS

Fair value is defined as the price at which an asset could be exchanged in a current transaction between knowledgeable, willing parties or the amount that would be paid to transfer a liability to a new obligor, not the amount that would be paid to settle the liability with the creditor. Where available, fair value is based on observable market prices or parameters or derived from such prices or parameters. Where observable prices or inputs are not available, valuation models are applied. These valuation techniques involve some level of management estimation and judgment, the degree of which is dependent on the price transparency for the instruments or market and the instruments’ complexity.

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Assets and liabilities recorded at fair value in the condensed balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair value. Hierarchical levels, defined by ASC 820 “Fair Value Measurements and Disclosures” (ASC 820) are directly related to the amount of subjectivity associated with the inputs to fair valuation of these assets and liabilities, and are as follows:

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Level 1 — Inputs were unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date.

Level 2 — Inputs (other than quoted prices included in Level 1) were either directly or indirectly observable for the asset or liability through correlation with market data at the measurement date and for the duration of the instrument’s anticipated life.

Level 3 — Inputs reflected management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. Consideration was given to the risk inherent in the valuation technique and the risk inherent in the inputs to the model.

We are required to separately disclose assets and liabilities measured at fair value on a recurring basis, from those measured at fair value on a nonrecurring basis. Nonfinancial assets measured at fair value on a nonrecurring basis are intangible assets and goodwill, which are reviewed for impairment annually in the fourth quarter and/or when circumstances or other events indicate that impairment may have occurred.

Determining which hierarchical level an asset or liability falls within requires significant judgment. We evaluate our hierarchy disclosures each quarter. The following table summarizes the assets and liabilities measured at fair value in the condensed balance sheets:


	Fair Value Measurements
Balance at March 31, 2023	Level 1		Level 2		Level 3		Total
Assets	($ in millions)
Commodity contracts	$	—	$	8.1	$	—	$	8.1
Foreign exchange contracts	—		1.6		—		1.6
Total Assets	$	—	$	9.7	$	—	$	9.7
Liabilities
Commodity contracts	$	—	$	41.7	$	—	$	41.7
Foreign exchange contracts	—		1.6		—		1.6
Total Liabilities	$	—	$	43.3	$	—	$	43.3
Balance at December 31, 2022
Assets
Commodity contracts	$	—	$	5.5	$	—	$	5.5
Foreign exchange contracts	—		0.3		—		0.3
Total Assets	$	—	$	5.8	$	—	$	5.8
Liabilities
Commodity contracts	$	—	$	49.0	$	—	$	49.0
Foreign exchange contracts	—		0.9		—		0.9
Total Liabilities	$	—	$	49.9	$	—	$	49.9
Balance at March 31, 2022
Assets
Commodity contracts	$	—	$	71.4	$	—	$	71.4
Foreign exchange contracts	—		0.3		—		0.3
Total Assets	$	—	$	71.7	$	—	$	71.7
Liabilities
Commodity contracts	$	—	$	0.7	$	—	$	0.7
Foreign exchange contracts	—		3.1		—		3.1
Total Liabilities	$	—	$	3.8	$	—	$	3.8

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~~condensed balance sheets:~~
Fair Value Measurements
Balance at March 31, 2022 Level 1 Level 2 Level 3 Total
Assets ($ in millions)
Commodity contracts $ — $ 71.4 $ — $ 71.4
Foreign exchange contracts — 0.3 — 0.3
Total Assets $ — $ 71.7 $ — $ 71.7
Liabilities
Commodity contracts $ — $ 0.7 $ — $ 0.7
Foreign exchange contracts — 3.1 — 3.1
Total Liabilities $ — $ 3.8 $ — $ 3.8
Balance at December 31, 2021
Assets
Commodity contracts $ — $ 33.5 $ — $ 33.5
Foreign exchange contracts — 1.2 — 1.2
Total Assets $ — $ 34.7 $ — $ 34.7
Liabilities
Commodity contracts $ — $ 3.2 $ — $ 3.2
Foreign exchange contracts — 0.6 — 0.6
Total Liabilities $ — $ 3.8 $ — $ 3.8
Balance at March 31, 2021
Assets
Commodity contracts $ — $ 38.1 $ — $ 38.1
Foreign exchange contracts — 0.4 — 0.4
Total Assets $ — $ 38.5 $ — $ 38.5
Liabilities
Commodity contracts $ — $ 0.5 $ — $ 0.5
Foreign exchange contracts — 2.7 — 2.7
Total Liabilities $ — $ 3.2 $ — $ 3.2

Commodity Contracts

Commodity contract financial instruments were valued primarily based on prices and other relevant information observable in market transactions involving identical or comparable assets or liabilities including both forward and spot prices for commodities. We use commodity derivative contracts for certain raw materials and energy costs such as copper, zinc, lead, ethane, electricity and natural gas to provide a measure of stability in managing our exposure to price fluctuations.

Foreign Currency Contracts

Foreign currency contract financial instruments were valued primarily based on relevant information observable in market transactions involving identical or comparable assets or liabilities including both forward and spot prices for currencies. We enter into forward sales and purchase contracts to manage currency risk resulting from purchase and sale commitments denominated in foreign currencies.

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Financial Instruments

The carrying values of cash and cash equivalents, accounts receivable and accounts payable approximated fair values due to the short-term maturities of these instruments. Since our long-term debt instruments may not be actively traded, the inputs used to measure the fair value of our long-term debt are based on current market rates for debt of similar risk and maturities and is classified as Level 2 in the fair value measurement hierarchy. As of March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, the fair value measurements of debt were ~~$2,807.2~~$2,627.5 million, ~~$2,921.0~~$2,517.7 million and ~~$4,011.5~~$2,807.2 million, respectively.

Nonrecurring Fair Value Measurements

In addition to assets and liabilities that are recorded at fair value on a recurring basis, we record assets and liabilities at fair value on a nonrecurring basis as required by ASC 820. There were no assets or liabilities measured at fair value on a nonrecurring basis as of March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021.~~2022.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Business Background

Olin Corporation (Olin) is a Virginia corporation, incorporated in 1892, having its principal executive offices in Clayton, MO. We are a leading vertically-integrated global manufacturer and distributor of chemical products and a leading U.S. manufacturer of ammunition. Our operations are concentrated in three business segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. All of our business segments are capital intensive manufacturing businesses. The Chlor Alkali Products and Vinyls segment manufactures and sells chlorine and caustic soda, ethylene dichloride and vinyl chloride monomer, methyl chloride, methylene chloride, chloroform, carbon tetrachloride, perchloroethylene, hydrochloric acid, hydrogen, bleach products and potassium hydroxide. The Epoxy segment produces and sells a full range of epoxy materials and precursors, including aromatics (acetone ~~bisphenol, cumene~~ and phenol), allyl chloride, epichlorohydrin, liquid epoxy resins, solid epoxy resins and ~~downstream~~systems and growth products such as converted epoxy resins and additives. The Winchester segment produces and sells sporting ammunition, reloading components, small caliber military ammunition and components, and industrial cartridges.

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Executive Summary

~~2022~~2023 Overview

Net income for the three months ended March 31, ~~2022~~2023 was ~~$393.0~~$156.3 million compared to ~~$243.6~~$393.0 million for the comparable prior year period in 2021. The increase in results from the prior year was due to improved operating results across all our business segments. The first quarter 2021 included a net pretax favorable impact of $99.9 million associated with Winter Storm Uri due to Olin’s customary financial hedges and contracts maintained to provide protection from rapid and dramatic changes in energy costs, partially offset by unabsorbed fixed manufacturing costs and storm-related maintenance costs.2022. For the three months ended March 31, ~~2021, Chlor Alkali Products~~2023, the decrease in net income from the prior year was primarily due to lower operating results across all of our business segments.

On January 10, 2023, Blue Water Alliance (BWA), our joint venture with Mitsui & Co., Ltd. (Mitsui), began operations after receiving all necessary regulatory approvals. BWA is an independent global trader of ECU-based derivatives, focused on globally traded caustic soda and ~~Vinyls segment results included a favorable impact of $121.4 million~~ethylene dichloride (EDC). Olin holds 51% interest and ~~Epoxy segment results included an unfavorable impact of $21.5 million associated~~exercises control in BWA and the joint venture is consolidated in our consolidated financial statements with ~~Winter Storm Uri.~~Mitsui’s 49% interest in BWA classified as noncontrolling interest. All intercompany accounts and transactions are eliminated in consolidation.

Chlor Alkali Products and Vinyls reported segment income of ~~$328.6~~$245.9 million for the three months ended March 31, ~~2022.~~2023, respectively. Chlor Alkali Products and Vinyls segment results for first quarter 2023 were ~~higher~~lower than in the comparable prior year period primarily due to ~~higher pricing, primarily chlorine, caustic soda and ethylene dichloride,~~lower volumes, partially offset by higher ~~raw material and operating costs and lower volumes.~~pricing across all products except vinyls intermediates.

Epoxy reported segment income of ~~$138.0~~$21.4 million for the three months ended March 31, ~~2022.~~2023. Epoxy segment results were ~~higher~~lower than in the comparable prior year period primarily due to ~~higher product prices, partially offset by higher raw material costs, primarily benzene and propylene,~~ lower volumes and ~~higher~~lower pricing, which were both impacted by record exports out of Asia into Europe and North America markets. Partially offsetting the lower volumes and prices were lower raw material and operating costs. Our Epoxy segment experienced weaker European epoxy resin demand in our system, which caused us to temporarily curtail epoxy resin production at our Stade, Germany facility and refrain from selling incremental volume into a poor-quality market.

Winchester reported segment income of ~~$118.9~~$61.0 million for the three months ended March 31, ~~2022.~~2023. Winchester segment results were ~~higher~~lower than in the comparable prior year period primarily due to ~~increased~~lower commercial ~~ammunition pricing, partially offset by~~volumes and higher commodity and operating costs.

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Liquidity and Share Repurchases

During the three months ended March 31, ~~2022,~~2023, we repurchased and retired ~~5.2~~3.6 million shares of common stock at a total value of ~~$263.2~~$206.1 million.As of March 31, ~~2022,~~2023, we have ~~$789.0~~$1,497.2 million of remaining authorized common stock to be purchased under our ~~2021 $1.0 billion share repurchase program.~~2022 Repurchase Authorization Program.

~~Other Events~~During the three months ended March 31, 2023, we had net borrowings of $192.6 million with $140.0 million borrowed under our Senior Revolving Credit Facility and an incremental $55.0 million drawn under our Receivables Financing Agreement. The proceeds were used to fund inventory built in advance of a planned maintenance turnaround and our normal seasonal working capital growth during the first quarter.

~~The invasion~~

Table of Ukraine by Russia and the sanctions imposed in response to this crisis have increased the level of economic and political uncertainty. Russia sales represented less than 0.5% of our total sales for the full year 2021 and were minimal sales for the first quarter of 2022. During the first quarter of 2022, we ceased all sales to and purchases from Russia. Additionally, sanctions from the U.S., and the European Union continue to evolve, along with the overall impact the invasion has on the global economic and political environment. We continue to closely monitor the changing environment, including the increased volatility and heightened degree of uncertainty resulting from the invasion. As of now, the direct impact on our operations has not been significant, but we are unable to fully determine the future impact the invasion and the corresponding global response will have on our business.

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Consolidated Results of Operations


		Three Months Ended March 31,						Three Months Ended March 31,
			2022		2021				2023		2022
			($ in millions, except per share data)						($ in millions, except per share data)
Sales	Sales		$	2,461.4	$	1,918.8	Sales		$	1,844.3	$	2,461.4
Cost of goods sold	Cost of goods sold		1,807.5		1,423.8		Cost of goods sold		1,441.7		1,807.5
Gross margin	Gross margin		653.9		495.0		Gross margin		402.6		653.9
Selling and administration	Selling and administration		104.3		106.9		Selling and administration		111.8		104.3
Restructuring charges	Restructuring charges		3.1		6.9		Restructuring charges		60.9		3.1
Other operating income							Other operating income		0.5		—
Operating income	Operating income		546.5		381.2		Operating income		230.4		546.5
Interest expense	Interest expense		32.9		84.5		Interest expense		42.4		32.9
Interest income	Interest income		0.4		0.1		Interest income		1.1		0.4
Non-operating pension income	Non-operating pension income		9.6		9.3		Non-operating pension income		5.7		9.6
Income before taxes	Income before taxes		523.6		306.1		Income before taxes		194.8		523.6
Income tax provision	Income tax provision		130.6		62.5		Income tax provision		40.8		130.6
Net income	Net income		$	393.0	$	243.6	Net income		$	154.0	$	393.0
Net income per common share:
Net loss attributable to noncontrolling interests							Net loss attributable to noncontrolling interests		(2.3)		—
Net income attributable to Olin Corporation							Net income attributable to Olin Corporation		$	156.3	$	393.0
Net income attributable to Olin Corporation per common share:							Net income attributable to Olin Corporation per common share:
Basic	Basic		$	2.54	$	1.54	Basic		$	1.19	$	2.54
Diluted	Diluted		$	2.48	$	1.51	Diluted		$	1.16	$	2.48

Three Months Ended March 31, ~~2022~~2023 Compared to Three Months Ended March 31, ~~2021~~2022

Sales for the three months ended March 31, ~~2022~~2023 were ~~$2,461.4~~$1,844.3 million compared to ~~$1,918.8~~$2,461.4 million in the same period last year, ~~an increase~~a decrease of ~~$542.6~~$617.1 million, or ~~28%~~25%. Epoxy sales decreased by $428.8 million, primarily due to lower volumes, including the closure of our Cumene facility and one of our bisphenol (BisA) production lines. Chlor Alkali Products and Vinyls sales ~~increased~~decreased by $378.2 million due to higher product pricing, primarily chlorine, caustic soda and ethylene dichloride, partially offset by lower volumes. Epoxy sales increased by $126.9 million due to higher product prices, partially offset by lower volumes. Winchester sales increased by $37.5$128.1 million primarily due to ~~increased~~lower volumes, partially offset by product sold by BWA and higher prices across all products except vinyls intermediates. Winchester sales decreased by $60.2 million, primarily due to lower commercial ~~ammunition pricing.~~sales volumes.

Gross margin ~~increased $158.9~~decreased $251.3 million for the three months ended March 31, ~~2022~~2023 compared to the prior year. Epoxy gross margin decreased by $120.4 million primarily due to lower volumes. Chlor Alkali Products and Vinyls gross margin ~~increased~~decreased by ~~$55.3~~$75.2 million ~~Epoxy gross margin increased by $73.4 million and Winchester gross margin increased by $36.6 million. Gross margin across all of our businesses increased~~primarily due to ~~higher product pricing,~~lower volumes partially offset by higher ~~raw material and operating costs.~~prices across all products except vinyls intermediates. Winchester gross margin decreased by $58.0 million primarily due to lower commercial volumes. Gross margin as a percentage of sales decreased to 22% in 2023 from 27% in 2022.

Selling and administration expenses for the three months ended March 31, 2023 were $111.8 million, an increase of $7.5 million from the prior year. The increase was primarily due to higher stock-based compensation expense of $4.2 million, which includes mark-to-market adjustments and an unfavorable foreign currency impact of $2.5 million. Selling and administration expenses as a percentage of sales increased to ~~27%~~6% in 2023 from 4% in 2022.

Restructuring charges for the three months ended March 31, 2023 and 2022 were $60.9 million and $3.1 million, respectively. The increase in charges was primarily due to our decision to cease operations at our Cumene facility in Terneuzen, Netherlands and solid epoxy resin production at our facilities in Gumi, South Korea and Guaruja, Brazil which resulted in pretax restructuring charges of $55.9 million for the three months ended March 31, 2023.

Interest expense increased by $9.5 million for the three months ended March 31, 2023 from ~~26% in 2021.~~the prior year primarily due to higher average interest rates partially offset by lower level of debt outstanding.

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~~Selling and administration expenses~~The effective tax rate for the three months ended March 31, ~~2022 were $104.3 million,~~2023 included a benefit associated with stock-based compensation, a benefit from remeasurement of deferred taxes due to a decrease ~~of $2.6~~in our state effective tax rates, a benefit associated with prior year tax positions, an expense from a net increase in the valuation allowance related to deferred tax assets in foreign jurisdictions, and an expense from a change in tax contingencies, resulting in a net $5.2 million ~~from~~tax benefit. After giving consideration to these items, the prior year. The decrease was primarily due to lower variable incentive compensation expense of $8.5 million, which includes mark-to-market adjustments on stock-based compensation expense, partially offset by higher legal and legal related settlement costs of $2.9 million. Selling and administration expenses as a percentage of sales decreased to 4% in 2022 from 6% in 2021.

~~Restructuring charges~~effective tax rate for the three months ended March 31, ~~2022 and 2021 were $3.1 million and $6.9 million, respectively. In March 2021, we announced that we had made~~2023 of 23.6% was higher than the decision to permanently close approximately 50% of our diaphragm-grade chlor alkali capacity, representing 200,000 tons, at our McIntosh, AL facility which resulted in pretax restructuring charges of $4.4 million.

Interest expense decreased by $51.6 million for the three months ended March 31, 2022. Interest expense for the three months ended March 31, 2021 included $18.7 million of bond redemption premiums and $4.8 million for write-off of deferred debt issuance costs and recognition of deferred fair value interest21% U.S. federal statutory rate ~~swap losses related to financing transactions during first quarter 2021. Without these items, interest expense decreased by $28.1 million,~~ primarily due to ~~a lower level of debt outstanding~~state and ~~lower average interest rates.~~

foreign income taxes and an increase in the valuation allowance related to losses in foreign jurisdictions, partially offset by favorable permanent salt depletion deductions. The effective tax rate for the three months ended March 31, 2022 included a benefit associated with prior year tax, stock-based compensation and a change in tax contingencies, resulting in a net $2.3 million tax benefit. After giving consideration to these items, the effective tax rate for the three months ended March 31, 2022 of 25.4% was higher than the 21% U.S. federal statutory rate primarily due to state and foreign income taxes, partially offset by foreign income exclusions and a favorable permanent salt depletion deductions. The effective tax rate for the three months ended March 31, 2021 included a benefit associated with prior year tax positions, an expense associated with stock-based compensation, an expense from a net increase in the valuation allowance related to foreign tax credits and an expense from a change in tax contingencies. These factors resulted in a net $1.3 million tax benefit. After giving consideration to these items, the effective tax rate for the three months ended March 31, 2021 of 20.8% was lower than the 21% U.S. federal statutory rate primarily due to a net decrease in the valuation allowance related to utilization of losses in foreign jurisdictions and favorable permanent salt depletion deductions, partially offset by state taxes, foreign income inclusions and foreign income taxes.

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Segment Results

Three Months Ended March 31,
2022 2021
Sales: ($ in millions)
Chlor Alkali Products and Vinyls $ 1,245.2 $ 867.0
Epoxy 789.5 662.6
Winchester 426.7 389.2
Total sales $ 2,461.4 $ 1,918.8
Income before taxes:
Chlor Alkali Products and Vinyls $ 328.6 $ 271.1
Epoxy 138.0 65.2
Winchester 118.9 85.1
Corporate/other:
Environmental expense(1)
(5.6) (0.3)
Other corporate and unallocated costs (30.3) (33.0)
Restructuring charges (3.1) (6.9)
Interest expense(2)
(32.9) (84.5)
Interest income 0.4 0.1
Non-operating pension income 9.6 9.3
Income before taxes $ 523.6 $ 306.1

~~(1)Environmental expense for the three months ended March 31, 2021 includes $2.2 million of insurance recoveries for environmental costs incurred and expensed in prior periods.~~

~~(2)~~Interest expense for the three months ended March 31, 2021 included a loss on extinguishment of debt of $23.5 million, which includes bond redemption premiums, write-off of deferred debt issuance costs and recognition of deferred fair value interest rate swap losses associated with the optional prepayment of existing debt.


	Three Months Ended March 31,
		2023		2022
Sales:		($ in millions)
Chlor Alkali Products and Vinyls		$	1,117.1	$	1,245.2
Epoxy		360.7		789.5
Winchester		366.5		426.7
Total sales		$	1,844.3	$	2,461.4
Income before taxes:
Chlor Alkali Products and Vinyls		$	245.9	$	328.6
Epoxy		21.4		138.0
Winchester		61.0		118.9
Corporate/other:
Environmental expense		(3.2)		(5.6)
Other corporate and unallocated costs		(34.3)		(30.3)
Restructuring charges		(60.9)		(3.1)
Other operating income		0.5		—
Interest expense		(42.4)		(32.9)
Interest income		1.1		0.4
Non-operating pension income		5.7		9.6
Income before taxes		$	194.8	$	523.6

Chlor Alkali Products and Vinyls

Three Months Ended March 31, ~~2022~~2023 Compared to Three Months Ended March 31, ~~2021~~2022

Chlor Alkali Products and Vinyls sales for the three months ended March 31, ~~2022~~2023 were ~~$1,245.2~~$1,117.1 million compared to ~~$867.0~~$1,245.2 million for the same period in ~~2021, an increase~~2022, a decrease of ~~$378.2~~$128.1 million, or ~~44%~~10%. Thesales ~~increase~~ decreasewasprimarilydueto ~~higher pricing, primarily chlorine, caustic soda and ethylene dichloride,~~lower volumes, partially offset by ~~lower volumes.~~product sold by BWA and higher prices across all products except vinyls intermediates.

Chlor Alkali Products and Vinyls segment income was ~~$328.6~~$245.9 million for the three months ended March 31, ~~2022~~2023 compared to ~~$271.1~~$328.6 million for the same period in 2021. Chlor Alkali Products and Vinyls first quarter 2021 operating results were favorably impacted by Winter Storm Uri ($121.4 million), which includes a net one-time benefit associated with Olin’s customary financial hedges and contracts maintained to provide protection from rapid and dramatic changes in energy costs, partially offset by unabsorbed fixed manufacturing costs and storm-related maintenance costs. Without the impact of Winter Storm Uri, the increase2022. The decrease in segment results of ~~$178.9~~$82.7 million was ~~primarily~~ due to higher product prices ($384.4 million), primarily chlorine, caustic soda and ethylene dichloride, partially offset by higher raw material and operating costs ($94.2 million), primarily increased natural gas and electrical power costs, lower volumes across all products ($~~73.1~~181.5 million) and increased costs associated with product purchased from other parties ($~~38.2~~32.1

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million), partially offset by higher prices across all products except vinyls intermediates ($123.0 million) and lower raw material and operating costs ($7.9 million). Chlor Alkali Products and Vinyls segment results included depreciation and amortization expense of ~~$123.1~~$114.4 million and ~~$115.8~~$123.1 million for the three months ended March 31, 2023 and 2022, ~~and 2021,~~ respectively.

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Epoxy

Three Months Ended March 31, ~~2022~~2023 Compared to Three Months Ended March 31, ~~2021~~2022

Epoxy sales for the three months ended March 31, ~~2022~~2023 were ~~$789.5~~$360.7 million compared to ~~$662.6~~$789.5 million for the same period in ~~2021, an increase~~2022, a decrease of ~~$126.9~~$428.8 million, or ~~19%~~54%. The sales ~~increase~~decrease was primarily due to ~~higher~~lower volumes ($194.0 million), the closure of our Cumene facility and one of our BisA production lines ($184.7 million), lower product prices ($~~281.5~~42.6 million)~~, partially offset by lower volumes ($127.4 million), primarily liquid epoxy resins, solid epoxy resins and downstream products~~ and an unfavorable effect of foreign currency translation ($~~27.1~~7.5 million).

Epoxy segment income was ~~$138.0~~$21.4 million for the three months ended March 31, ~~2022~~2023 compared to ~~$65.2~~$138.0 million for the same period in 2021. Epoxy first quarter 2021 operating results were unfavorably impacted by Winter Storm Uri ($21.5 million), which included unabsorbed fixed manufacturing costs and storm-related maintenance costs. Without the impact of Winter Storm Uri, the increase2022. The decrease in segment results of ~~$51.3~~$116.6 million was primarily due to ~~higher~~lower volumes ($117.5 million) and lower product prices ($~~281.5~~42.6 million), which were both impacted by record exports out of Asia into Europe and North America markets, partially offset by ~~higher~~lower raw material ~~costs ($129.3 million), primarily benzene~~ and ~~propylene, lower volumes ($55.2 million) and higher~~ operating costs ($~~45.7~~43.5 million)~~, primarily increased natural gas and electrical power costs.~~. A significant percentage of our Euro denominated sales are of products manufactured within Europe. As a result, the impact of foreign currency translation on revenue is primarily offset by the impact of foreign currency translation on raw materials and manufacturing costs also denominated in Euros. Epoxy segment results included depreciation and amortization expense of ~~$20.4~~$14.5 million and ~~$22.1~~$20.4 million for the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, respectively.

Winchester

Three Months Ended March 31, ~~2022~~2023 Compared to Three Months Ended March 31, ~~2021~~2022

Winchester sales were ~~$426.7~~$366.5 million for the three months ended March 31, ~~2022~~2023 compared to ~~$389.2~~$426.7 million for the same period in ~~2021, an increase~~2022, a decrease of ~~$37.5~~$60.2 million, or ~~10%~~14%. The ~~increase~~decrease was due to ~~higher~~lower ammunition sales to commercial customers ($~~53.2~~113.7 million), partially offset by higher sales to military customers ($45.9 million) and law enforcement agencies ($~~1.5 million), partially offset by lower sales to military customers ($17.2~~7.6 million). Commercial ammunition sales ~~benefited from improved commercial pricing and a favorable product mix partially offset~~were primarily impacted by lower volumes.

Winchester segment income was ~~$118.9~~$61.0 million for the three months ended March 31, ~~2022~~2023 compared to ~~$85.1~~$118.9 million for the same period in ~~2021, an increase~~2022, a decrease of ~~$33.8~~$57.9 million. The ~~increase~~decrease in segment results was due to ~~higher product pricing~~lower volumes ($~~56.5~~46.9 million) ~~and a favorable product mix ($1.1 million)~~, ~~partially offset by~~ higher commodity and operating costs ($~~23.8~~11.0 million). Winchester segment income included depreciation and amortization expense of $6.2 million ~~and $5.6 million~~ for both the three months ended March 31, ~~2022~~2023 and ~~2021, respectively.~~2022.

Corporate/Other

Three Months Ended March 31, ~~2022~~2023 Compared to Three Months Ended March 31, ~~2021~~2022

For the three months ended March 31, ~~2022,~~2023, charges to income for environmental investigatory and remedial activities were ~~$5.6~~$3.2 million compared to ~~$0.3~~$5.6 million for the three months ended March 31, 2021, which included $2.2 million of insurance recoveries for environmental costs incurred and expensed in prior periods. Without these recoveries, charges to income for environmental investigatory and remedial activities for the three months ended March 31, 2021 would have been $2.5 million.2022. These charges related primarily to expected future investigatory and remedial activities associated with past manufacturing operations and former waste disposal sites.

For the three months ended March 31, ~~2022,~~2023, other corporate and unallocated costs were ~~$30.3~~$34.3 million compared to ~~$33.0~~$30.3 million for the three months ended March 31, ~~2021, a decrease~~2022, an increase of ~~$2.7~~$4.0 million. The ~~decrease~~ increase was primarily due to ~~lower variable incentive~~higher stock-based compensation costs ($~~8.5~~4.2 million), which includes mark-to-market adjustments, ~~on stock-based compensation expense,~~and an unfavorable foreign currency impact ($2.5 million), partially offset by ~~higher~~ lower legal and legal-related settlement expenses ($~~2.9~~1.0 million).

Restructurings

As a result of weak global resin demand and higher cost structures within the European region, we began a review of our global Epoxy asset footprint to optimize the most productive and cost effective assets to support our strategic operating model. As part of this review we announced operational cessations in the fourth quarter of 2022 and the first quarter of 2023.

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On March 21, 2023, we announced we had made the decision to cease operations at our Cumene facility in Terneuzen, Netherlands and solid epoxy resin production at our facilities in Gumi, South Korea and Guaruja, Brazil. The closures were completed in the first quarter 2023. During the fourth quarter of 2022, we committed to and completed a plan to close down one of our BisA production lines at our Stade, Germany site. For the three months ended March 31, 2023, we recorded pretax restructuring charges of $55.9 million for contract termination costs, the write-off of equipment and facility costs and facility exit costs related to the first quarter 2023 cessations. For the three months ended March 31, 2023, we recorded additional pretax restructuring charges of $1.9 million for facility exit costs related to the fourth quarter 2022 BisA closure. We expect to incur additional restructuring charges through 2026 of approximately $30 million related to these actions.

Outlook

In ~~2022,~~2023, we expect the on-going challenging global economic conditions to continue ~~to benefit from Olin’s strategic operating model of optimizing value across our Chemicals and Winchester businesses. In 2022,~~as we expect operating results to ~~improve~~decline across all our business segments compared to ~~2021.~~

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2022. We expect ~~operating income for the second quarter 2022~~our Chlor Alkali Products and Vinyls business to experience declining caustic soda market conditions and continued vinyls intermediates demand weakness. We expect our Epoxy business to continue to be ~~higher than first quarter 2022~~challenged by European and North American demand weakness, aggravated by elevated Asian exports and a muted recovery of $546.5 million. We expect sequentially higher raw material and operating costs, mainly increased natural gas and electrical power costs, to be more than offset by increased product pricing across our entire chemicals value chain.Chinese domestic demand. We expect the second quarter ~~2022~~2023 operating results from our ~~Chemicals~~Chemical businesses to be ~~higher~~slightly lower than first quarter 2022. Our Chlor Alkali Products and Vinyls second quarter 2022 results are expected to improve sequentially despite reduced margin from lost sales and production volumes, increased maintenance expense and other costs, as a result of the unplanned production outage at our Plaquemine, Louisiana facility. During the second quarter, we expect the Epoxy business to continue to experience weaker epoxy resin demand and operate at low rates.2023 levels. We expect our Winchester business second quarter ~~2022~~2023 results to ~~be comparable with~~increase sequentially from first quarter ~~2022~~2023 levels as ~~higher product pricing is expected~~commercial customer inventories become more normalized. Overall, we expect Olin’s second quarter 2023 operating results to ~~be offset by higher commodity and other materials costs.~~slightly decline from first quarter 2023 levels.

Other Corporate and Unallocated costs in ~~2022~~2023 are expected to be ~~lower than~~comparable with the ~~$135.1~~$131.5 million in ~~2021.~~2022.

During ~~2022,~~2023, we anticipate environmental expenses in the $25 million to $30 million range, compared to ~~$14.0~~$23.2 million in ~~2021.~~2022.

We expect non-operating pension income in ~~2022~~2023 to be in the ~~$40~~$20 million to $25 million range compared to ~~$35.7~~$38.7 million in ~~2021.~~2022. Based on our plan assumptions and estimates, we will not be required to make any cash contributions to our domestic qualified defined benefit pension plan in ~~2022.~~2023. We have several international qualified defined benefit pension plans for which we anticipate cash contributions of less than $5 million in ~~2022.~~2023.

In ~~2022,~~2023, we currently expect our capital spending to be in the $200 million to $250 million ~~range.~~range and we expect to make payments under other long-term supply contracts in the $50 million to $100 million range for energy modernization on the U.S. Gulf Coast. We expect ~~2022~~2023 depreciation and amortization expense to be in the ~~$575~~$550 million to ~~$600~~$575 million range.

We currently believe the ~~2022~~2023 effective ~~and cash~~ tax rates will be in the 25% to 30% ~~range.~~range and our cash tax rate to be in the 30% to 35% range as a result of previously deferred international tax payments expected to be made in 2023.

Environmental Matters

Environmental provisions charged to income, which are included in costs of goods sold, were ~~as follows:~~

Three Months Ended March 31,
2022 2021
($ in millions)
Provisions charged to income $ 5.6 $ 2.5
Recoveries for costs incurred and expensed — (2.2)
Environmental expense $ 5.6 $ 0.3

~~Environmental expense~~$3.2 million and $5.6 million for the three months ended March 31, ~~2021 includes $2.2 million of insurance recoveries for environmental costs incurred~~2023 and ~~expensed in prior periods.~~2022, respectively.

Our liabilities for future environmental expenditures were as follows:


		March 31,					March 31,
		2022		2021			2023		2022
		($ in millions)					($ in millions)
Balance at beginning of year	Balance at beginning of year	$	147.3	$	147.2	Balance at beginning of year	$	146.6	$	147.3
Charges to income	Charges to income	5.6		2.5		Charges to income	3.2		5.6
Remedial and investigatory spending	Remedial and investigatory spending	(3.5)		(2.5)		Remedial and investigatory spending	(3.1)		(3.5)
Foreign currency translation adjustments	Foreign currency translation adjustments	0.1		—		Foreign currency translation adjustments	—		0.1
Balance at end of period	Balance at end of period	$	149.5	$	147.2	Balance at end of period	$	146.7	$	149.5

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Environmental investigatory and remediation activities spending was associated with former waste disposal sites and past manufacturing operations. Spending in ~~2022~~2023 for investigatory and remedial efforts, the timing of which is subject to regulatory approvals and other uncertainties, is estimated to be approximately $25 million. Cash outlays for remedial and investigatory activities associated with former waste disposal sites and past manufacturing operations were not charged to income, but instead, were charged to reserves established for such costs identified and expensed to income in prior periods. Associated costs of investigatory and remedial activities are provided for in accordance with generally accepted accounting principles governing probability and the ability to reasonably estimate future costs. Our ability to estimate future costs depends on whether our investigatory and remedial activities are in preliminary or advanced stages. With respect to unasserted claims, we accrue liabilities for costs that, in our experience, we expect to incur to protect our interests against those unasserted claims. Our accrued liabilities for unasserted claims amounted to ~~$9.0~~$8.9 million at March 31, ~~2022.~~2023. With respect to asserted claims, we accrue liabilities based on remedial investigation, feasibility study, remedial action and operation, maintenance and monitoring (OM&M) expenses that, in our experience, we expect to incur in connection with the asserted claims. Required site OM&M expenses are estimated and accrued in their entirety for required periods not exceeding 30 years, which reasonably approximates the typical duration of long-term site OM&M. Charges to income for investigatory and remedial efforts may be material to our operating results in ~~2022.~~2023.

The condensed balance sheets included reserves for future environmental expenditures to investigate and remediate known sites amounting to ~~$149.5~~$146.7 million, ~~$147.3~~$146.6 million and ~~$147.2~~$149.5 million at March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, respectively, of which ~~$124.5~~$121.7 million, ~~$122.3~~$121.6 million and ~~$128.2~~$124.5 million, respectively, were classified as other noncurrent liabilities. These amounts do not take into account any discounting of future expenditures or any consideration of insurance recoveries or advances in technology. These liabilities are reassessed periodically to determine if environmental circumstances have changed and/or remediation efforts and our estimate of related costs have changed. As a result of these reassessments, future charges to income may be made for additional liabilities.

Legal Matters and Contingencies

Discussion of legal matters and contingencies can be referred to under Item 1, within Note 10, “Commitments and Contingencies.”

Liquidity and Capital Resources

Cash Flow Data


		Three Months Ended March 31,					Three Months Ended March 31,
		2022		2021			2023		2022
Provided By (Used For)	Provided By (Used For)	($ in millions)				Provided By (Used For)	($ in millions)
Net operating activities	Net operating activities	$	353.5	$	269.8	Net operating activities	$	37.5	$	353.5
Capital expenditures	Capital expenditures	(47.3)		(51.2)		Capital expenditures	(61.4)		(47.3)

Long-term debt repayments, net		(0.2)		(120.2)
Debt early redemption premium		—		(18.7)
Payments under other long-term supply contracts						Payments under other long-term supply contracts	(9.3)		—
Long-term debt borrowings (repayments), net						Long-term debt borrowings (repayments), net	192.6		(0.2)
Common stock repurchased and retired	Common stock repurchased and retired	(263.2)		—		Common stock repurchased and retired	(206.1)		(263.2)
Stock options exercised	Stock options exercised	5.2		25.7		Stock options exercised	11.2		5.2
Debt issuance costs		—		(3.1)
Contributions received from noncontrolling interests						Contributions received from noncontrolling interests	44.1		—
Net financing activities	Net financing activities	(289.0)		(148.0)		Net financing activities	15.6		(289.0)

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Operating Activities

For the three months ended March 31, ~~2022,~~2023, cash provided by operating activities ~~increased~~decreased by ~~$83.7~~$316.0 million from the three months ended March 31, ~~2021,~~2022, primarily due to a decrease in operating results and an increase in ~~operating results.~~working capital compared with the prior year. For the three months ended March 31, ~~2022,~~2023, working capital increased ~~$195.5~~$244.4 million compared to an increase of ~~$204.3~~$195.5 million for the three months ended March 31, ~~2021.~~2022. The working capital increase during the first quarter reflects inventory built in advance of a planned maintenance turnaround and normal seasonal working capital ~~growth, along with reflecting higher raw material costs. Receivables~~growth. Inventories increased by ~~$85.6~~$146.0 million from December 31, ~~2021, primarily as a result of higher sales during the first quarter of~~ 2022. For the three months ended March 31, 2022, our days sales outstanding (DSO), which was calculated by dividing period end accounts receivable by average daily sales for the period, improved from the comparable prior year period. Inventories increased by $45.0 million from December 31, 2021 primarily as a result of increased raw material cost and accountsAccounts payable and accrued liabilities decreased ~~$132.6~~$66.1 million primarily as a result of timing of payments during the first quarter of ~~2022.~~2023.

Investing Activities

Capital spending of ~~$47.3~~$61.4 million for the three months ended March 31, ~~2022 was $3.9~~2023 compared to $47.3 million ~~lower than~~for the corresponding period in ~~2021.~~2022. For the total year ~~2022,~~2023, we currently expect our capital spending to be in the $200 million to $250 million range. We expect ~~2022~~2023 depreciation and amortization expense to be in the $550 million to $575 million range.

For the three months ended March 31, 2023, payments under other long-term supply contracts was $9.3 million for energy modernization on the U.S. Gulf Coast and we expect to ~~$600~~make payments for the total year 2023 in the $50 million to $100 million range.

Financing Activities

For the three months ended March 31, 2023, we had long-term debt borrowings, net of long-term debt repayments of $192.6 million. For the three months ended March 31, 2022, ~~and 2021,~~ we had long-term debt repayments, net of long-term debt borrowings of $0.2 ~~million and $120.2 million, respectively.~~

On March 31, 2021, Olin redeemed $315.0 million of the outstanding 10.00% senior notes due October 15, 2025 (2025 Notes). The 2025 Notes were redeemed at 105.0% of the principal amount of the 2025 Notes, resulting in a redemption premium of $15.8 million. ~~The 2025 Notes were redeemed by drawing $315.0 million of the Delayed Draw Term Loan along with utilizing $15.8 million of cash on hand.~~

On January 15, 2021, Olin redeemed the remaining $120.0 million of the 9.75% senior notes due 2023 (2023 Notes). The 2023 Notes were redeemed at 102.438% of the principal amount of the 2023 Notes, resulting in a redemption premium of $2.9 million. The remaining 2023 Notes were redeemed by utilizing cash on hand.

For the three months ended March 31, ~~2021,~~2023, we ~~paid debt issuance costs~~received $44.1 million of ~~$3.1 million~~cash contributions from noncontrolling interests for ~~the amendments to our Senior Credit Facility.~~BWA.

The percent of total debt to total capitalization ~~decreased~~increased to ~~49.9%~~52.3% as of March 31, ~~2022~~2023 from ~~51.2%~~50.4% as of December 31, ~~2021~~2022 as a result of a higher ~~shareholders’ equity primarily resulting from our operating results.~~level of debt outstanding.

In the first ~~quarters~~quarter of ~~2022~~2023 and ~~2021,~~2022, we paid a quarterly dividend of $0.20 per share. Dividends paid for the three months ended March 31, 2023 and 2022, ~~and 2021,~~ were ~~$30.8~~$26.2 million and ~~$31.7~~$30.8 million, respectively. On April 27, ~~2022,~~2023, our ~~board~~Board of ~~directors~~Directors declared a dividend of $0.20 per share on our common stock, payable on June ~~10, 2022~~9, 2023 to shareholders of record on May ~~10, 2022.~~11, 2023.

The payment of cash dividends is subject to the discretion of our ~~board~~Board of ~~directors~~Directors and will be determined in light of then-current conditions, including our earnings, our operations, our financial condition, our capital requirements and other factors deemed relevant by our ~~board~~Board of ~~directors.~~Directors. In the future, our ~~board~~Board of ~~directors~~Directors may change our dividend policy, including the frequency or amount of any dividend, in light of then-existing conditions.

Liquidity and Other Financing Arrangements

~~Table of Contents~~

Our principal sources of liquidity are from cash and cash equivalents, cash flow from operations and borrowings under our Senior Revolving Credit Facility, Receivables Financing Agreement and AR Facilities. Additionally, we believe that we have access to the high-yield debt and equity markets.

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commitments ~~in an amount equal to $800.0~~of $1,200.0 million (Senior Revolving Credit Facility). The Term Loan Facility was fully drawn on the closing date with the proceeds of the Term Loan Facility used to refinance the loans and commitments outstanding under the 2021 Senior Credit Facility. The Term Loan Facility requires principal amortization amounts payable beginning March 31, 2023 at a rate of 0.625% per quarter through the end of 2024, increasing to 1.250% per quarter thereafter until maturity. The maturity date for the Senior Credit Facility is ~~July 16, 2024. The amendment modified the pricing grid for the Senior Credit Facility by reducing applicable interest rates on the borrowings under the facility.~~October 11, 2027.

On March 30, 2021, Olin drew the entire $315.0 million of the Delayed Draw Term Loan and used the proceeds to fund the redemption of the 2025 Notes. During 2021, we repaid $465.0 million of the Senior Term Loans. These repayments satisfied all future required quarterly installments of the Senior Term Loans. The Senior Revolving Credit Facility includes a $100.0 million letter of credit subfacility. At March 31, ~~2022,~~2023, we had ~~$799.6~~$1,059.6 million available under our ~~$800.0~~$1,200.0 million Senior Revolving Credit Facility because we had $140.0 million borrowed under the facility and issued $0.4 million of letters of credit.

The overall ~~increase~~decrease in cash for the three months ended March 31, ~~2022~~2023 primarily reflects our ~~operating results, partially offset by~~ share repurchases, capital spending, and dividends ~~paid.~~paid, partially offset by our debt borrowings, operating results and contributions from noncontrolling interests. We believe, based on current and projected levels of cash flow from our operations, together with our cash and cash equivalents on hand and the availability to borrow under our Senior Revolving Credit Facility, Receivables Financing Agreement and AR Facilities, we have sufficient liquidity to meet our short-term and long-term needs to make required payments of interest on our debt, fund our operating needs, working capital and our capital expenditure ~~requirements.~~requirements, and comply with the financial ratios in our debt agreements.

On ~~April 26, 2018,~~July 28, 2022, our ~~board~~Board of ~~directors~~Directors authorized a share repurchase program for the purchase of shares of common stock at an aggregate price of up to $500.0 million. This program terminated during the first quarter of 2022 upon the purchase of $500.0 million of our common stock. On November 1, 2021, our board of directors authorized an additional share repurchase program for the purchase of shares of common stock at an aggregate price of up to $1.0$2.0 billion. This program will terminate upon the purchase of ~~$1.0~~$2.0 billion of ~~our~~ common stock.

For the three months ended March 31, ~~2022, 5.2~~2023, 3.6 million shares of common stock have been repurchased and retired at a total value of ~~$263.2~~$206.1 million. As of March 31, 2022, a total of 15.7 million shares of common stock were repurchased and retired at a total value of $500.0 million under the 2018 Repurchase Authorization program, terminating the program. As of March 31, 2022, 4.32023, 9.6 million shares of common stock have been repurchased and retired at a total value of ~~$211.0~~$502.8 million under the ~~2021~~2022 Repurchase Authorization program, and ~~$789.0~~$1,497.2 million of common stock remained authorized to be repurchased under the program.

We maintain a ~~$300.0~~$425.0 million Receivables Financing Agreement (Receivables Financing Agreement) that is scheduled to mature on ~~September 28, 2024. The Receivables Financing Agreement includes a minimum borrowing requirement of 50% of the facility limit or available borrowing capacity, whichever is less.~~October 14, 2025 . Under the Receivables Financing Agreement, our eligible

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trade receivables are used for collateralized borrowings and continue to be serviced by us. In addition, the Receivables Financing Agreement incorporates the net leverage ratio covenant that is contained in the Senior Credit Facility. As of March 31, 2023, December 31, 2022 ~~$642.4~~and March 31, 2022, we had $355.0 million, $300.0 million and $300.0 million, respectively, drawn under the agreement. As of March 31, 2023, $569.0 million of our trade receivables were pledged as collateral and we had ~~$300.0~~$70.0 million ~~drawn with no~~of additional borrowing capacity ~~available under the Receivables Financing Agreement. As of December 31, 2021 and March 31, 2021, we had $300.0 million and $125.0 million, respectively, drawn~~ under the Receivables Financing Agreement.

Olin also has trade accounts receivable factoring arrangements (AR Facilities) and pursuant to the terms of the AR Facilities, certain of our domestic subsidiaries may sell their accounts receivable up to a maximum of ~~$250.0~~$207.7 million and certain of our foreign subsidiaries may sell their accounts receivable up to a maximum of ~~€43.4~~€42.9 million. We will continue to service the outstanding accounts sold. These receivables qualify for sales treatment under ASC 860 and, accordingly, the proceeds are included in net cash provided by operating activities in the condensed statements of cash flows. The gross amount of receivables sold for the three months ended March 31, 2023 and 2022 ~~and 2021~~ totaled ~~$281.4~~$252.3 million and ~~$312.0~~$281.4 million, respectively. The factoring discount paid under the AR Facilities is recorded as interest expense on the condensed statements of operations. The factoring discount was ~~$0.5~~$1.2 million and ~~$0.4~~$0.5 million for the three months ended March 31, ~~2022~~2023 and ~~2021,~~2022, respectively. The agreements are without recourse and therefore no recourse liability has been recorded as of March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021.~~2022. As of March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021, $97.9~~2022, $77.1 million, ~~$83.3~~$111.8 million and ~~$142.5~~$97.9 million, respectively, of receivables qualifying for sales treatment were outstanding and will continue to be serviced by us.

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At March 31, ~~2022,~~2023, we had total letters of credit of ~~$82.7~~$76.9 million outstanding, of which $0.4 million were issued under our Senior Revolving Credit Facility. The letters of credit were used to support certain long-term debt, certain workers compensation insurance policies, certain plant closure and post-closure obligations, certain international payment obligations and certain international pension funding requirements.

Our current debt structure is used to fund our business operations. As of March 31, ~~2022,~~2023, we had long-term borrowings, including the current installment and finance lease obligations, of ~~$2,780.1~~$2,774.2 million, of which ~~$805.9~~$998.7 million were at variable rates. Included within long-term borrowings on the condensed balance sheets were deferred debt issuance costs and unamortized bond original issue discount of ~~$21.9~~$19.4 million as of March 31, ~~2022.~~2023. Commitments from banks under our Senior Revolving Credit Facility, Receivables Financing Agreement and AR Facilities are additional sources of liquidity.

Credit Ratings

We receive ratings from three independent credit rating agencies: Fitch Ratings (Fitch), Moody's Investor Service (Moody's) and Standard & Poor's (S&P). The following table summarizes our credit ratings as of January 31, 2023:

Credit Ratings

Long-term Rating

Outlook

Fitch Ratings

BBB-

Stable

Moody’s Investors Service

Ba1

Stable

Standard & Poor’s

BB+

Positive

On January 12, 2023, Fitch assigned a first-time inaugural rating of BBB- and a stable outlook. On June 10, 2022, Moody's upgraded Olin to Ba1 from Ba2, and changed its outlook from Positive to Stable. On April 4, 2023, S&P affirmed Olin’s BB+ rating and positive outlook.

Contractual Obligations

Purchasing commitments are utilized in our normal course of business for our projected needs. We have supply contracts with various third parties for certain raw materials including ethylene, electricity, propylene and benzene. These agreements are maintained through long-term cost based contracts that provide us with a reliable supply of key raw materials.

There have been no material changes in our contractual obligations and commitments as disclosed in our Annual Report on Form 10-K for the year ended December 31, ~~2021~~2022 other than those which occur in the ordinary course of business.

New Accounting Pronouncements

Discussion of new accounting pronouncements can be referred to under Item 1, within Note 2, “Recent Accounting Pronouncements.”

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Item 3. Quantitative and Qualitative Disclosures about Market Risk.

Energy costs, including electricity and natural gas, and certain raw materials used in our production processes are subject to price volatility. Depending on market conditions, we may enter into futures contracts, forward contracts, commodity swaps and put and call option contracts in order to reduce the impact of commodity price fluctuations. As of March 31, ~~2022,~~2023, we maintained open positions on commodity contracts with a notional value totaling ~~$204.7~~$220.6 million ($~~224.3~~261.2 million at December 31, ~~2021~~2022 and ~~$238.1~~$204.7 million at March 31, ~~2021)~~2022). Assuming a hypothetical 10% increase in commodity prices which are currently hedged, as of March 31, ~~2022,~~2023, we would experience a ~~$20.5~~$22.1 million ($~~22.4~~26.1 million at December 31, ~~2021~~2022 and ~~$23.8~~$20.5 million at March 31, ~~2021)~~2022) increase in our cost of inventory purchased, which would be substantially offset by a corresponding increase in the value of related hedging instruments.

We transact business in various foreign currencies other than the USD which exposes us to movements in exchange rates which may impact revenue and expenses, assets and liabilities and cash flows. Our significant foreign currency exposure is

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denominated with European currencies, primarily the Euro, although exposures also exist in other currencies of Asia Pacific, Latin America, Middle East and Africa. For all derivative positions, we evaluated the effects of a 10% shift in exchange rates between those currencies and the USD, holding all other assumptions constant. Unfavorable currency movements of 10% would negatively affect the fair values of the derivatives held to hedge currency exposures by ~~$34.8~~$50.0 million. These unfavorable changes would generally have been offset by favorable changes in the values of the underlying exposures.

We are exposed to changes in interest rates primarily as a result of our investing and financing activities. Our current debt structure is used to fund business operations, and commitments from banks under our Senior Revolving Credit Facility, Amended Receivables Financing Agreement and AR Facilities are additional sources of liquidity. As of March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, we had long-term borrowings, including current installments and finance lease obligations, of ~~$2,780.1~~$2,774.2 million, ~~$2,779.3~~$2,580.7 million and ~~$3,748.1~~$2,780.1 million, respectively, of which ~~$805.9~~$998.7 million, $805.9 million and ~~$1,095.9~~$805.9 million at March 31, ~~2022,~~2023, December 31, ~~2021~~2022 and March 31, ~~2021,~~2022, respectively, were issued at variable rates. Included within long-term borrowings on the condensed balance sheets were deferred debt issuance costs and unamortized bond original issue discount.

Assuming no changes in the ~~$805.9~~$998.7 million of variable-rate debt levels from March 31, ~~2022,~~2023, we estimate that a hypothetical change of 100-basis points in the ~~LIBOR interest rates~~secured overnight financing rate (SOFR) would impact annual interest expense by ~~$8.1~~$10.0 million.

If the actual changes in commodities, foreign currency, or interest pricing is substantially different than expected, the net impact of commodity risk, foreign currency risk, or interest rate risk on our cash flow may be materially different than that disclosed above.

We do not enter into any derivative financial instruments for speculative purposes.

Item 4. Controls and Procedures.

Our chief executive officer and our chief financial officer evaluated the effectiveness of our disclosure controls and procedures as of March 31, ~~2022.~~2023. Based on that evaluation, our chief executive officer and chief financial officer have concluded that, as of such date, our disclosure controls and procedures were effective to ensure that information Olin is required to disclose in the reports that it files or submits with the SEC under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms, and to ensure that information we are required to disclose in such reports is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate to allow timely decisions regarding required disclosure.

There have been no changes in our internal control over financial reporting that occurred during the quarter ended March 31, ~~2022,~~2023, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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Cautionary Statement Regarding Forward-Looking Statements

This quarterly report on Form 10-Q includes forward-looking statements. These statements relate to analyses and other information that are based on management’s beliefs, certain assumptions made by management, forecasts of future results, and current expectations, estimates and projections about the markets and economy in which we and our various segments operate. The statements contained in this quarterly report on Form 10-Q that are not statements of historical fact may include forward-looking statements that involve a number of risks and uncertainties.

We have used the words “anticipate,” “intend,” “may,” “expect,” “believe,” “should,” “plan,” “outlook,” “project,” “estimate,” “forecast,” “optimistic,” “target,” and variations of such words and similar expressions in this quarterly report to identify such forward-looking statements. These forward-looking statements include, but are not limited to, statements regarding the Company’s intent to repurchase, from time to time, the Company’s common stock. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions, which are difficult to predict and many of which are beyond our control. Therefore, actual outcomes and results may differ materially from those matters expressed or implied in such forward-looking statements. We undertake no obligation to update publicly any forward-looking statements, whether as a result of future events, new information or otherwise. The payment of cash dividends is subject to the discretion of our ~~board~~Board of ~~directors~~Directors and will be determined in light of then-current conditions, including our earnings, our operations, our financial conditions, our capital requirements and other factors deemed relevant by our ~~board~~Board of ~~directors.~~Directors. In the future, our ~~board~~Board of ~~directors~~Directors may change our dividend policy, including the frequency or amount of any dividend, in light of then-existing conditions.

The risks, uncertainties and assumptions involved in our forward-looking statements, many of which are discussed in more detail in our filings with the SEC, including without limitation the “Risk Factors” section of our Annual Report on Form 10-K for the year ended December 31, ~~2021,~~2022, and our Quarterly Reports on Form 10-Q and other reports furnished or filed with the SEC, include, but are not limited to, the following:

Business, Industry and Operational Risks

•sensitivity to economic, business and market conditions in the United States and overseas, including economic instability or a downturn in the sectors served by us;

•declines in average selling prices for our products and the supply/demand balance for our products, including the impact of excess industry capacity or an imbalance in demand for our chlor alkali products;

•unsuccessful execution of our strategic operating model, which prioritizes Electrochemical Unit (ECU) margins over sales volumes;

•failure to control costs and inflation impacts or failure to achieve targeted cost reductions;

•our reliance on a limited number of suppliers for specified feedstock and services and our reliance on third-party transportation;

•~~higher-than-expected raw material, energy, transportation, and/or logistics costs;~~

•the occurrence of unexpected manufacturing interruptions and outages, including those occurring as a result of labor disruptions, production hazards and weather-related events;

•availability of and/or higher-than-expected costs of raw material, energy, transportation, and/or logistics;

•the failure or an interruption of our information technology systems;

•failure to identify, attract, develop, retain and motivate qualified employees throughout the organization;

•our inability to complete future acquisitions or joint venture transactions or successfully integrate them into our business;

•~~our substantial amount of indebtedness and significant debt service obligations;~~

•risks associated with our international sales and operations, including economic, political or regulatory changes;

•the negative impact from a public health crisis, such as a pandemic, endemic or outbreak of infectious disease, including the COVID-19 pandemic and the global response to the pandemic, including without limitation adverse impacts in complying with governmental mandates;

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•our indebtedness and debt service obligations;

•weak industry conditions affecting our ability to comply with the financial maintenance covenants in our senior credit facility;

•adverse conditions in the credit and capital markets, limiting or preventing our ability to borrow or raise capital;

•the effects of any declines in global equity markets on asset values and any declines in interest rates or other significant assumptions used to value the liabilities in, and funding of, our pension plans;

•our long-range plan assumptions not being realized causing a non-cash impairment charge of long-lived assets;

Legal, Environmental and Regulatory Risks

•changes in, or failure to comply with, legislation or government regulations or policies, including changes regarding our ability to manufacture or use certain products and changes within the international markets in which we operate;

•new regulations or public policy changes regarding the transportation of hazardous chemicals and the security of chemical manufacturing facilities;

•unexpected outcomes from legal or regulatory claims and proceedings;

•costs and other expenditures in excess of those projected for environmental investigation and remediation or other legal proceedings;

•various risks associated with our Lake City U.S. Army Ammunition Plant contract and performance under other governmental contracts; and

•failure to effectively manage environmental, social and governance (ESG) issues and related regulations, including climate change and sustainability.

All of our forward-looking statements should be considered in light of these factors. In addition, other risks and uncertainties not presently known to us or that we consider immaterial could affect the accuracy of our forward-looking statements.

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Part II — Other Information

Item 1. Legal Proceedings.

Not Applicable.

Item 1A. Risk Factors.

Not Applicable.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

(a) Not Applicable.

(b) Not Applicable.

(c)

Issuer Purchases of Equity Securities

Period
Total Number of Shares (or Units) Purchased(1)
Average Price Paid per Share (or Unit) Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs Maximum Dollar Value of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
January 1-31, 2022 736,577 $ 54.33 736,577
February 1-28, 2022 2,295,698 $ 50.28 2,295,698
March 1-31, 2022 2,211,797 $ 48.72 2,211,797
Total $ 789,001,930 (1)


Period	Total Number of Shares (or Units) Purchased(1)	Average Price Paid per Share (or Unit)(2)		Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs	Maximum Dollar Value of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
January 1-31, 2023	905,758	$	55.22	905,758
February 1-28, 2023	1,278,823	$	60.82	1,278,823
March 1-31, 2023	1,431,786	$	53.41	1,431,786
Total					$	1,497,235,430	(1)

(1)On ~~April 26, 2018,~~July 28, 2022, our ~~board~~Board of ~~directors~~Directors authorized a share repurchase program for the purchase of shares of common stock at an aggregate price of up to $500.0 million (the 2018 Repurchase Authorization). This program was terminated upon the purchase of $500.0 million of our common stock. On November 1, 2021, our board of directors authorized an additional share repurchase program for the purchase of shares of common stock at an aggregate price of up to $1.0$2.0 billion (the ~~2021~~2022 Repurchase Authorization). This program will terminate upon the purchase of ~~$1.0~~$2.0 billion of ~~our~~ common stock. ~~As of~~Through March 31, ~~2022, 15,722,843~~2023, 9,554,365 shares of common stock had been repurchased and retired at a total value of ~~$500,000,000~~$502,764,570 and no common stock remained available for purchase under the 2018 Repurchase Authorization, terminating the program. As of March 31, 2022, 4,265,206 shares of common stock had been repurchased and retired at a total value of $210,998,070, and $789,001,930$1,497,235,430 of common stock remained available for purchase under the ~~2021~~2022 Repurchase Authorization program.

(2)Average price paid per share includes transaction costs including commissions and fees paid to acquire the shares and excludes costs accrued associated with 1% excise tax on the fair market value of stock repurchases.

Item 3. Defaults Upon Senior Securities.

Not Applicable.

Item 4. Mine Safety Disclosures.

Not Applicable.

Item 5. Other Information.

Not Applicable.

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Item 6. Exhibits.


Exhibit						Exhibit Description
~~4.1~~3.1						~~Amendment No. 8 dated January 20, 2022 to Receivables Financing Agreement dated December 20, 2016 among~~Bylaws of Olin Corporation ~~Olin Finance Company, LLC, PNC Bank, National Association, PNC Capital Markets LLC and the Lender parties thereto—~~as amended effective April 27, 2023—Exhibit ~~4.53~~3.1 to Olin's Form ~~10-K filed February 24, 2022~~*
~~10.1~~						~~Performance Share Program adopted February 22, 2022—Exhibit 99.1 to Olin’s Form~~ 8-K filed ~~February 24, 2022~~April 27, 2023*
31.1						Section 302 Certification Statement of Chief Executive Officer
31.2						Section 302 Certification Statement of Chief Financial Officer
32						Section 906 Certification Statement of Chief Executive Officer and Chief Financial Officer
101.INS						XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the XBRL document)
101.SCH						XBRL Taxonomy Extension Schema Document
101.CAL						XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF						XBRL Taxonomy Extension Definition Linkbase Document
101.LAB						XBRL Taxonomy Extension Label Linkbase Document
101.PRE						XBRL Taxonomy Extension Presentation Linkbase Document
104						Cover Page Interactive Data File (embedded in the Exhibit 101 Interactive Data Files)
*Previously filed as indicated and incorporated herein by reference. Exhibits incorporated by reference are located in SEC file No. 1-1070 unless otherwise indicated.

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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.


			OLIN CORPORATION
			(Registrant)

			By:			/s/ Todd A. Slater
						Senior Vice President and Chief Financial Officer (Authorized Officer)

Date: April ~~29, 2022~~28, 2023

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Period	Total Number of Shares (or Units) Purchased(1)	Average Price Paid per Share (or Unit)		Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs	Maximum Dollar Value of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
January 1-31, 2022	736,577	$	54.33	736,577
February 1-28, 2022	2,295,698	$	50.28	2,295,698
March 1-31, 2022	2,211,797	$	48.72	2,211,797
Total					$	789,001,930	(1)