10-Q

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 September 30, 2022

OR

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

Commission file number: 001-36557

ADVANCED DRAINAGE SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

Delaware	51-0105665
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

4640 Trueman Boulevard, Hilliard, Ohio 43026

(Address of Principal Executive Offices, Including Zip Code)

(614) 658-0050

(Registrant’s Telephone Number, Including Area Code)

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value per share	WMS	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. (Check one):

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 October 26, 2022, the registrant had 82,855,726 shares of common stock outstanding, which excludes 261,575 shares of unvested restricted common stock. The shares of common stock trade on the New York Stock Exchange under the ticker symbol “WMS.”

TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION
Item 1.	Condensed Consolidated Financial Statements (Unaudited)	Page
	Condensed Consolidated Balance Sheets as of September 30, 2022 and March 31, 2022	3
	Condensed Consolidated Statements of Operations for the three and six months ended September 30, 2022 and 2021	4
	Condensed Consolidated Statements of Comprehensive Income for the three and six months ended September 30, 2022 and 2021	5
	Condensed Consolidated Statements of Cash Flows for the six months ended September 30, 2022 and 2021	6
	Condensed Consolidated Statements of Stockholders’ Equity and Mezzanine Equity for the three and six months ended September 30, 2022 and 2021	7
	Notes to the Condensed Consolidated Financial Statements	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	19
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	29
Item 4.	Controls and Procedures	29
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	31
Item 1A.	Risk Factors	31
Item 2.	Unregistered Sale of Equity Securities and Use of Proceeds	31
Item 3.	Defaults Upon Senior Securities	31
Item 4.	Mine Safety Disclosures	31
Item 5.	Other Information	31
Item 6.	Exhibits	32
Signatures		33

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PART I. FINANCIAL INFORMATION

ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited) (In thousands, except par value)

	September 30, 2022		March 31, 2022
ASSETS
Current assets:
Cash	$	457,357	$	20,125
Receivables (less allowance for doubtful accounts of $8,033 and $8,198, respectively)	387,952		341,753
Inventories	479,171		494,324
Other current assets	23,400		15,696
Total current assets	1,347,880		871,898
Property, plant and equipment, net	653,432		619,383
Other assets:
Goodwill	619,487		610,293
Intangible assets, net	435,281		431,385
Other assets	121,519		116,799
Total assets	$	3,177,599	$	2,649,758
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current maturities of debt obligations	$	16,765	$	19,451
Current maturities of finance lease obligations	5,358		5,089
Accounts payable	236,603		224,986
Other accrued liabilities	169,774		134,877
Accrued income taxes	10,800		6,838
Total current liabilities	439,300		391,241
Long-term debt obligations (less unamortized debt issuance costs of $12,825 and $1,648, respectively)	1,275,211		908,705
Long-term finance lease obligations	13,893		11,393
Deferred tax liabilities	164,945		168,435
Other liabilities	68,580		64,939
Total liabilities	1,961,929		1,544,713
Commitments and contingencies (see Note 9)
Mezzanine equity:
Redeemable common stock: $0.01 par value; 9,840 and 0 shares outstanding, respectively	159,928		—
Redeemable convertible preferred stock: $0.01 par value; 0 and 47,070 shares authorized, respectively; 0 and 44,170 shares issued; 0 and 15,630 shares outstanding, respectively	—		195,384
Total mezzanine equity	159,928		195,384
Stockholders’ equity:
Common stock; $0.01 par value: 1,000,000 shares authorized; 78,519 and 75,529  shares issued, respectively; 73,205 and 72,309 shares outstanding, respectively	11,642		11,612
Paid-in capital	1,119,453		1,065,628
Common stock in treasury, at cost	(536,697)		(318,691)
Accumulated other comprehensive loss	(33,775)		(24,386)
Retained earnings	477,790		158,876
Total ADS stockholders’ equity	1,038,413		893,039
Noncontrolling interest in subsidiaries	17,329		16,622
Total stockholders’ equity	1,055,742		909,661
Total liabilities, mezzanine equity and stockholders’ equity	$	3,177,599	$	2,649,758

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited) (In thousands, except per share data)

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
Net sales	$	884,209	$	706,471	$	1,798,395	$	1,375,771
Cost of goods sold	564,246		506,414		1,126,325		974,593
Gross profit	319,963		200,057		672,070		401,178
Operating expenses:
Selling, general and administrative	88,639		73,951		175,159		150,172
(Gain) loss on disposal of assets and costs from exit and disposal activities	(102)		(901)		201		(912)
Intangible amortization	13,841		15,446		27,518		31,091
Income from operations	217,585		111,561		469,192		220,827
Other expense:
Interest expense	18,261		8,437		29,333		16,344
Derivative losses (gains) and other expense (income), net	395		202		(1,507)		(1,812)
Income before income taxes	198,929		102,922		441,366		206,295
Income tax expense	47,508		26,816		102,573		53,271
Equity in net income of unconsolidated affiliates	(1,956)		(206)		(3,066)		(411)
Net income	153,377		76,312		341,859		153,435
Less: net income attributable to noncontrolling interest	1,370		953		2,706		2,089
Net income attributable to ADS	152,007		75,359		339,153		151,346
Weighted average common shares outstanding:
Basic	83,466		70,464		83,306		70,993
Diluted	84,498		71,924		84,485		72,614
Net income per share:
Basic	$	1.82	$	0.90	$	4.07	$	1.78
Diluted	$	1.80	$	0.88	$	4.01	$	1.74

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited) (In thousands)

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
Net income	$	153,377	$	76,312	$	341,859	$	153,435
Currency translation (loss) gain	(5,763)		(3,406)		(9,661)		(1,365)
Comprehensive income	147,614		72,906		332,198		152,070
Less: other comprehensive (loss) income attributable to noncontrolling interest	(277)		(180)		(272)		435
Less: net income attributable to noncontrolling interest	1,370		953		2,706		2,089
Total comprehensive income attributable to ADS	$	146,521	$	72,133	$	329,764	$	149,546

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited) (In thousands)

	Six Months Ended September 30,
	2022		2021
Cash Flows from Operating Activities
Net income	$	341,859	$	153,435
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	71,500		68,850
Deferred income taxes	(3,117)		15
(Gain) loss on disposal of assets and costs from exit and disposal activities	201		(912)
ESOP and stock-based compensation	13,733		38,437
Amortization of deferred financing charges	398		191
Fair market value adjustments to derivatives	2,183		(446)
Equity in net income of unconsolidated affiliates	(3,066)		(411)
Other operating activities	(713)		441
Changes in working capital:
Receivables	(43,680)		(138,063)
Inventories	15,799		(124,429)
Prepaid expenses and other current assets	(7,776)		(6,738)
Accounts payable, accrued expenses, and other liabilities	49,703		104,508
Net cash provided by operating activities	437,024		94,878
Cash Flows from Investing Activities
Capital expenditures	(75,545)		(63,764)
Acquisition, net of cash acquired	(48,010)		—
Other investing activities	46		1,556
Net cash used in investing activities	(123,509)		(62,208)
Cash Flows from Financing Activities
Payments on syndicated Term Loan Facility	(3,500)		(3,500)
Proceeds from Revolving Credit Agreement	26,200		146,800
Payments on Revolving Credit Agreement	(140,500)		(24,200)
Proceeds from Amended Revolving Credit Agreement	97,000		—
Payments on Amended Revolving Credit Agreement	(97,000)		—
Proceeds from Senior Notes due 2030	500,000		—
Debt issuance costs	(11,575)		—
Payments on Equipment Financing	(7,104)		—
Payments on finance lease obligations	(3,153)		(10,437)
Repurchase of common stock	(192,602)		(292,000)
Cash dividends paid	(20,367)		(18,758)
Dividends paid to noncontrolling interest holder	(1,727)		(1,471)
Proceeds from exercise of stock options	4,660		3,179
Payment of withholding taxes on vesting of restricted stock units	(25,512)		(12,976)
Other financing activities	—		(230)
Net cash provided by (used in) financing activities	124,820		(213,593)
Effect of exchange rate changes on cash	(1,103)		(81)
Net change in cash	437,232		(181,004)
Cash at beginning of period	20,125		195,009
Cash at end of period	$	457,357	$	14,005
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	$	101,470	$	61,813
Cash paid for interest	18,276		15,383
Non-cash operating, investing and financing activities:
Repurchase of common stock pending settlement	2,561		—
Acquisition of property, plant and equipment under finance lease and incurred lease obligations	6,681		11,403
Balance in accounts payable for the acquisition of property, plant and equipment	15,631		11,499

c

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND MEZZANINE EQUITY

(Unaudited) (In thousands)

	Common Stock				Paid -In Capital		Common Stock in Treasury				Accumulated Other Compre-hensive Loss		Retained (Deficit) Earnings		Total ADS Stockholders’ Equity		Non- controlling Interest in  Subsidiaries		Total Stock- holders’ Equity		Redeemable Convertible Preferred Stock				Deferred Compensation Unearned ESOP Shares				Total Mezzanine Equity
	Shares		Amount				Shares		Amount												Shares		Amount		Shares		Amount
Balance at July 1, 2021	73,227		$	11,589	$	950,963	1,678		$	(139,313)	$	(22,794)	$	(8,666)	$	791,779	$	14,525	$	806,304	18,282		$	228,532	799		$	(8,942)	$	219,590
Net income	—		—		—		—		—		—		75,359		75,359		953		76,312		—		—		—		—		—
Other comprehensive income	—		—		—		—		—		(3,226)		—		(3,226)		(180)		(3,406)		—		—		—		—		—
Redeemable convertible preferred stock dividends	—		—		—		—		—		—		(1,547)		(1,547)		—		(1,547)		—		—		—		—		—
Common stock dividends ($0.11 per share)	—		—		—		—		—		—		(7,760)		(7,760)		—		(7,760)		—		—		—		—		—
Dividends paid to noncontrolling interest holder	—		—		—		—		—		—		—		—		(514)		(514)		—		—		—		—		—
Share repurchases	—		—		—		1,518		(176,622)		—		—		(176,622)		—		(176,622)		—		—		—		—		—
Allocation of ESOP shares to participants for compensation	—		—		10,085		—		—		—		—		10,085		—		10,085		—		—		(155)		1,928		1,928
Exercise of common stock options	76		1		1,843		—		—		—		—		1,844		—		1,844		—		—		—		—		—
Restricted stock awards	30		—		—		—		—		—		—		—		—		—		—		—		—		—		—
Stock-based compensation expense	—		—		5,618		—		—		—		—		5,618		—		5,618		—		—		—		—		—
Other	—		—		(311)		—		—		—		—		(311)		—		(311)		—		—		—		—		—
Balance at September 30, 2021	73,333		$	11,590	$	968,198	3,196		$	(315,935)	$	(26,020)	$	57,386	$	695,219	$	14,784	$	710,003	18,282		$	228,532	644		$	(7,014)	$	221,518
Balance at April 1, 2021	72,071		$	11,578	$	918,587	501		$	(10,959)	$	(24,220)	$	(75,202)	$	819,784	$	13,731	$	833,515	19,275		$	240,944	966		$	(11,033)	$	229,911
Net income	—		—		—		—		—		—		151,346		151,346		2,089		153,435		—		—		—		—		—
Other comprehensive income	—		—		—		—		—		(1,800)		—		(1,800)		435		(1,365)		—		—		—		—		—
Redeemable convertible preferred stock dividends	—		—		—		—		—		—		(3,097)		(3,097)		—		(3,097)		—		—		—		—		—
Common stock dividends ($0.22 per share)	—		—		—		—		—		—		(15,661)		(15,661)		—		(15,661)		—		—		—		—		—
Dividends paid to noncontrolling interest holder	—		—		—		—		—		—		—		—		(1,471)		(1,471)		—		—		—		—		—
Share repurchases	—		—		—		2,574		(292,000)		—		—		(292,000)		—		(292,000)
Allocation of ESOP shares to participants for compensation	—		—		22,149		—		—		—		—		22,149		—		22,149		—		—		(322)		4,019		4,019
Exercise of common stock options	124		1		3,179		—		—		—		—		3,180		—		3,180		—		—		—		—		—
Restricted stock awards	129		1		—		29		(3,231)		—		—		(3,230)		—		(3,230)		—		—		—		—		—
Performance-based restricted stock units	245		2		—		92		(9,745)		—		—		(9,743)		—		(9,743)
Stock-based compensation expense	—		—		12,269		—		—		—		—		12,269		—		12,269		—		—		—		—		—
ESOP distribution in common stock	764		8		12,404		—		—		—		—		12,412		—		12,412		(993)		(12,412)		—		—		(12,412)
Other	—		—		(390)		—		—		—		—		(390)		—		(390)		—		—		—		—		—
Balance at September 30, 2021	$	73,333	$	11,590	$	968,198	$	3,196	$	(315,935)	$	(26,020)	$	57,386	$	695,219	$	14,784	$	710,003	$	18,282	$	228,532	$	644	$	(7,014)	$	221,518

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND MEZZANINE EQUITY

(Unaudited) (In thousands)

	Common Stock			Paid -In Capital		Common Stock in Treasury			Accumulated Other Compre-hensive Loss		Retained (Deficit) Earnings		Total ADS Stockholders’ Equity		Non- controlling Interest in  Subsidiaries		Total Stock- holders’ Equity		Redeemable Common Stock			Redeemable Convertible Preferred Stock			Total Mezzanine Equity
	Shares	Amount				Shares	Amount												Shares	Amount		Shares	Amount
Balance at July 1, 2022	76,607	$	11,623	$	1,079,701	4,221	$	(408,861)	$	(28,289)	$	335,822	$	989,996	$	17,963	$	1,007,959	11,619	$	188,828	—	$	—	$	188,828
Net income	—	—		—		—	—		—		152,007		152,007		1,370		153,377		—	—		—	—		—
Other comprehensive (loss) income	—	—		—		—	—		(5,486)		—		(5,486)		(277)		(5,763)		—	—		—	—		—
Common stock dividends ($0.12 per share)	—	—		—		—	—		—		(10,039)		(10,039)		—		(10,039)		—	—		—	—		—
Share repurchases	—	—		—		1,093	(127,802)		—		—		(127,802)		—		(127,802)		—	—		—	—		—
Dividends paid to noncontrolling interest holder	—	—		—		—	—		—		—		—		(1,727)		(1,727)		—	—		—	—		—
KSOP redeemable common stock conversion	1,779	18		28,882		—	—		—		—		28,900		—		28,900		(1,779)	(28,900)		—	—		(28,900)
Exercise of common stock options	116	1		3,410		—	—		—		—		3,411		—		3,411		—	—		—	—		—
Restricted stock awards	17	—		—		—	(34)		—		—		(34)		—		(34)		—	—		—	—		—
Stock-based compensation expense	—	—		7,460		—	—		—		—		7,460		—		7,460		—	—		—	—		—
Balance at September 30, 2022	78,519	$	11,642	$	1,119,453	5,314	$	(536,697)	$	(33,775)	$	477,790	$	1,038,413	$	17,329	$	1,055,742	9,840	$	159,928	—	$	—	$	159,928
Balance at April 1, 2022	75,529	$	11,612	$	1,065,628	3,220	$	(318,691)	$	(24,386)	$	158,876	$	893,039	$	16,622	$	909,661	—	$	—	15,630	$	195,384	$	195,384
Net income	—	—		—		—	—		—		339,153		339,153		2,706		341,859		—	—		—	—		—
Other comprehensive (loss) income	—	—		—		—	—		(9,389)		—		(9,389)		(272)		(9,661)		—	—		—	—		—
Common stock dividends ($0.24 per share)	—	—		—		—	—		—		(20,239)		(20,239)		—		(20,239)		—	—		—	—		—
Dividends paid to noncontrolling interest holder	—	—		—		—	—		—		—		—		(1,727)		(1,727)		—	—		—	—		—
Share repurchases	—	—		—		1,865	(195,163)		—		—		(195,163)		—		(195,163)		—	—		—	—		—
ESOP share conversion	—	—		—		—	—		—		—		—		—		—		12,022	195,384		(15,630)	(195,384)		—
KSOP redeemable common stock conversion	2,182	22		35,434		—	—		—		—		35,456		—		35,456		(2,182)	(35,456)		—	—		(35,456)
Exercise of common stock options	183	2		4,658		—	—		—		—		4,660		—		4,660		—	—		—	—		—
Restricted stock awards	98	1		—		24	(2,492)		—		—		(2,491)		—		(2,491)		—	—		—	—		—
Performance-based restricted stock units	527	5		—		205	(20,351)		—		—		(20,346)		—		(20,346)		—	—		—	—		—
Stock-based compensation expense	—	—		13,733		—	—		—		—		13,733		—		13,733		—	—		—	—		—
Balance at September 30, 2022	78,519	$	11,642	$	1,119,453	5,314	$	(536,697)	$	(33,775)	$	477,790	$	1,038,413	$	17,329	$	1,055,742	9,840	$	159,928	—	$	—	$	159,928

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

1.BACKGROUND AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business - Advanced Drainage Systems, Inc. and subsidiaries (collectively referred to as “ADS” or the “Company”), incorporated in Delaware, designs, manufactures and markets innovative water management solutions in the stormwater and onsite septic waste water industries, providing superior drainage solutions for use in the construction and agriculture marketplace. ADS’s products are used across a broad range of end markets and applications, including non-residential, infrastructure and agriculture applications.

The Company is managed and reports results of operations in three reportable segments: Pipe, Infiltrator Water Technologies Ultimate Holdings, Inc ("Infiltrator") and International. The Company also reports the results of its Allied Products and all other business segments as Allied Products and Other.

Historically, sales of the Company’s products have been higher in the first and second quarters of each fiscal year due to favorable weather and longer daylight conditions accelerating construction activity during these periods. Seasonal variations in operating results may also be impacted by inclement weather conditions, such as cold or wet weather, which can delay projects.

Basis of Presentation - The Company prepares its Condensed Consolidated Financial Statements in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The Condensed Consolidated Balance Sheet as of March 31, 2022 was derived from audited financial statements included in the Annual Report on Form 10-K for the year ended March 31, 2022 (“Fiscal 2022 Form 10-K”). The accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, of a normal recurring nature, necessary to present fairly its financial position as of September 30, 2022 and the results of operations for the three and six months ended September 30, 2022 and cash flows for the six months ended September 30, 2022. The interim Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements, including the notes thereto, filed in the Company’s Fiscal 2022 Form 10-K.

Principles of Consolidation - The Condensed Consolidated Financial Statements include the Company, its wholly-owned subsidiaries, its majority-owned subsidiaries and variable interest entities (“VIEs”) of which the Company is the primary beneficiary. The Company uses the equity method of accounting for equity investments where it exercises significant influence but does not hold a controlling financial interest. Such investments are recorded in Other assets in the Condensed Consolidated Balance Sheets and the related equity earnings from these investments are included in Equity in net income of unconsolidated affiliates in the Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation.

Recent Accounting Guidance

There have been no new accounting pronouncements issued or adopted since the filing of the Fiscal 2022 Form 10-K that have significance, or potential significance, to the Condensed Consolidated Financial Statements.

2.ACQUISITIONS

Acquisition of Cultec - On April 29, 2022, the Company completed its acquisition of Cultec, Inc. (“Cultec”). Cultec was a family-owned technology leader in the stormwater and onsite septic wastewater industries. The acquisition of Cultec expands the Company’s portfolio of innovative water management solutions in the stormwater and onsite septic wastewater industries. The total fair value of consideration transferred was $48.0 million.

The following table summarizes the consideration transferred and the preliminary purchase price allocation of assets acquired and liabilities assumed. The purchase price allocation for assets acquired and liabilities assumed is preliminary and will be finalized when valuations are complete and final assessments of the fair value of acquired assets and assumed liabilities are completed. Such finalization may result in material changes from the preliminary purchase price allocation. The Company's estimates and assumptions are subject to change during the measurement

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period (up to one year from the closing date), as the Company continues to finalize the valuations of assets acquired and liabilities assumed.

(Amounts in thousands)	Initial Amount		Increase to Purchase Price		Updated Amount
Accounts receivable	$	5,957	$	—	$	5,957
Inventory	4,469		—		4,469
Intangible assets	31,400		—		31,400
Goodwill	9,660		518		10,178
Property, plant and equipment	1,986		—		1,986
Accounts payable	(5,539)		—		(5,539)
Accrued expenses	(75)		—		(75)
Other liabilities	(366)		—		(366)
Total fair value of consideration transferred	$	47,492	$	518	$	48,010

The preliminary goodwill of $10.2 million represents the excess of consideration transferred over the preliminary fair value of assets acquired and liabilities assumed and is attributable to expected operating efficiencies. The goodwill is deductible for income tax purposes and is assigned to Allied Products & Other.

The preliminary purchase price excludes transaction costs. During the six months ended September 30, 2022, the Company incurred $1.5 million of transaction costs related to the acquisition such as legal, accounting, valuation and other professional services. These costs are included in selling, general and administrative expenses in the Consolidated Statements of Operations and Consolidated Statements of Comprehensive Income.

The identifiable intangible assets recorded in connection with the closing of the acquisition of Cultec are based on preliminary valuations including customer relationships, patents and developed technology and tradename and trademarks totaling $31.4 million.

(Amounts in thousands)	Preliminary fair value
Customer relationships	$	12,400
Patents and developed technology	16,200
Tradename and trademarks	2,800
Total identifiable intangible assets	$	31,400

The Company has excluded certain disclosures required under ASC 805, Business Combinations as they are not material to the financial statements.

3.REVENUE RECOGNITION

Revenue Disaggregation - The Company disaggregates net sales by Domestic, International and Infiltrator and further disaggregates Domestic and International by product type, consistent with its reportable segment disclosure. This disaggregation level best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Refer to “Note 12. Business Segments Information” for the Company’s disaggregation of Net sales by reportable segment.

Contract Balances - The Company recognizes a contract asset representing the Company’s right to recover products upon the receipt of returned products and a contract liability for the customer refund. The following table presents the balance of the Company’s contract asset and liability as of the periods presented:

	September 30, 2022		March 31, 2022
	(In thousands)
Contract asset - product returns	$	1,105	$	978
Refund liability	3,487		2,356

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4.LEASES

Nature of the Company’s Leases - The Company has operating and finance leases for plants, yards, corporate offices, tractors, trailers and other equipment. The Company’s leases have remaining terms of less than one year to 28 years. A portion of the Company’s yard leases include an option to extend the leases for up to five years. The Company has included renewal options which are reasonably certain to be exercised in its right-of-use assets and lease liabilities.

5.INVENTORIES

Inventories as of the periods presented consisted of the following:

	September 30, 2022		March 31, 2022
	(In thousands)
Raw materials	$	146,757	$	156,050
Finished goods	332,414		338,274
Total inventories	$	479,171	$	494,324

6.NET INCOME PER SHARE AND STOCKHOLDERS' EQUITY

Employee Stock Ownership Plan ("ESOP") - As previously disclosed in the Fiscal 2022 Form 10-K, in April 2022 all currently outstanding 15.6 million shares of Preferred Stock held by the ESOP were converted into 12.0 million shares of the Company’s redeemable common stock at the Conversion rate of 0.7692. The Company’s 401(k) retirement plan (“KSOP”) holds these shares of common stock. When participants sell or forfeit these shares, the shares are no longer subject to the put option of the Internal Revenue Code and are no longer required to be classified in mezzanine equity.

Net Income per Share - For the three and six months ended September 30, 2021, the Company was required to apply the two-class method to compute both basic and diluted net income per share. Holders of redeemable convertible preferred stock participated in dividends on an as-converted basis when declared on common stock. As a result, redeemable convertible preferred stock met the definition of participating securities. The two-class method is an earnings allocation formula that treats participating securities as having rights to earnings that would otherwise have been available to common stockholders. The Company was not required to apply the two-class method to compute net income per share for the three and six months ended September 30, 2022 as the redeemable common stock and common stock have the same rights to earnings available to common stockholders.

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The following table presents information necessary to calculate net income per share for the periods presented, as well as potentially dilutive securities excluded from the weighted average number of diluted common shares outstanding because their inclusion would have been anti-dilutive:

	Three Months Ended September 30,				Six Months Ended September 30,
(In thousands, except per share data)	2022		2021		2022		2021
NET INCOME PER SHARE—BASIC:
Net income attributable to ADS	$	152,007	$	75,359	$	339,153	$	151,346
Adjustments for:
Dividends to participating securities	—		(1,636)		—		(3,276)
Net income available to common stockholders and participating securities	152,007		73,723		339,153		148,070
Undistributed income allocated to participating securities	—		(10,494)		—		(21,430)
Net income available to common stockholders – Basic	$	152,007	$	63,229	$	339,153	$	126,640
Weighted average number of common shares outstanding – Basic	83,466		70,464		83,306		70,993
Net income per common share – Basic	$	1.82	$	0.90	$	4.07	$	1.78
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	152,007	$	63,229	$	339,153	$	126,640
Weighted average number of common shares outstanding – Basic	83,466		70,464		83,306		70,993
Assumed restricted stock	139		223		142		251
Assumed exercise of stock options	717		914		740		928
Assumed performance units	176		323		297		442
Weighted average number of common shares outstanding – Diluted	84,498		71,924		84,485		72,614
Net income per common share – Diluted	$	1.80	$	0.88	$	4.01	$	1.74
Potentially dilutive securities excluded as anti-dilutive	18		13,356		36		13,729

Stockholders’ Equity – During the three and six months ended September 30, 2022, the Company repurchased 1.1 million and 1.9 million shares, respectively, of common stock at a cost of $127.8 million and $195.2 million, respectively. The repurchases were made under the Board of Directors’ authorization in February 2022 to repurchase up to an additional $1.0 billion of ADS Common Stock in accordance with applicable securities laws. As of September 30, 2022, approximately $804.8 million of common stock may be repurchased under the authorization. The repurchase program does not obligate the Company to acquire any particular amount of common stock and may be suspended or terminated at any time at the Company’s discretion.

7.RELATED PARTY TRANSACTIONS

ADS Mexicana - ADS conducts business in Mexico and Central America through its joint venture ADS Mexicana, S.A. de C.V. (“ADS Mexicana”). ADS owns 51% of the outstanding stock of ADS Mexicana and consolidates ADS Mexicana for financial reporting purposes.

On June 6, 2022, the Company and ADS Mexicana amended the Intercompany Revolving Credit Promissory Note (the “Intercompany Note”) with a borrowing capacity of $9.5 million. The Intercompany Note matures on June 8, 2027. The Intercompany Note indemnifies the ADS Mexicana joint venture partner for 49% of any unpaid borrowing. The interest rates under the Intercompany Note are determined by certain base rates or Secured Overnight Financing Rate (“SOFR”) plus an applicable margin based on the Leverage Ratio. As of September 30, 2022 and March 31, 2022, there were no borrowings and $1.5 million of borrowings, respectively, outstanding under the Intercompany Note.

South American Joint Venture - The Tuberias Tigre - ADS Limitada joint venture (the “South American Joint Venture”) manufactures and sells HDPE corrugated pipe in certain South American markets. ADS owns 50% of the South American Joint Venture. ADS is the guarantor of 50% of the South American Joint Venture’s credit arrangement, and the debt guarantee is shared equally with the joint venture partner. The Company’s maximum potential obligation under this guarantee is $11.0 million as of September 30, 2022. The maximum borrowings permitted under the South American Joint Venture’s credit facility are $22.0 million. The Company does not anticipate any required contributions related to the balance of this credit arrangement. As of September 30, 2022

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and March 31, 2022, the outstanding principal balances of the credit facility including letters of credit were $8.3 million and $9.9 million, respectively. As of September 30, 2022, there were no U.S. dollar denominated loans. The weighted average interest rate as of September 30, 2022 was 12.0% on Chilean peso denominated loans.

8.DEBT

Long-term debt as of the periods presented consisted of the following:

	September 30, 2022		March 31, 2022
	(In thousands)
Term Loan Facility	$	430,750	$	434,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		—
Revolving Credit Facility	—		114,300
Equipment Financing	24,051		31,254
Total	1,304,801		929,804
Unamortized debt issuance costs	(12,825)		(1,648)
Current maturities	(16,765)		(19,451)
Long-term debt obligations	$	1,275,211	$	908,705

Senior Secured Credit Facilities – In July 2019, the Company entered into the credit agreement (the “Base Credit Agreement”) by and among the Company, as borrower, Barclays Bank PLC, as administrative agent, the several lenders from time to time party thereto. In September 2019, the Company amended the Base Credit Agreement (as amended the “Senior Secured Credit Facility”). The Senior Secured Credit Facility provides for a term loan facility in an initial aggregate principal amount of $700 million (the “Term Loan Facility”), a revolving credit facility in an initial aggregate principal amount of up to $350 million (the “Revolving Credit Facility”), a letter of credit sub-facility in the initial aggregate available amount of up to $50 million, as a sublimit of such Revolving Credit Facility (the “L/C Facility”) and a swing line sub-facility in the aggregate available amount of up to $50 million, as a sublimit of the Revolving Credit Facility (together with the Term Loan Facility, the Revolving Credit Facility and the L/C Facility, the “Senior Secured Credit Facility”).

In May 2022, the Company entered into a Second Amendment (the "Second Amendment") to the Company's Base Credit Agreement with Barclays Bank PLC, as administrative agent under the Term Loan Facility, PNC Bank, National Association, as new administrative agent under the Revolving Credit Facility. Among other things, the Second Amendment (i) amended the Base Credit Agreement by increasing the Revolving Credit Facility (the "Amended Revolving Credit Facility") from $350 million to $600 million (including an increase of the sub-limit for the swing-line sub-facility from $50 million to $60 million), (ii) extended the maturity date of the Revolving Credit Facility to May 26, 2027, (iii) revised the “applicable margin” to provide an additional step-down to 175 basis points (for Term Benchmark based loans) and 75 basis points (for base rate loans) in the event the consolidated senior secured net leverage ratio is less than 2.00 to 1.00, and (iv) reset the “incremental amount” and the investment basket in non-guarantors and joint ventures. The Second Amendment also revises the reference interest rate from LIBOR to SOFR for both the Amended Revolving Credit Facility and the Term Loan Facility. Letters of credit outstanding at September 30, 2022 and March 31, 2022 amount to $11.7 million and $9.2 million, respectively, and reduced the availability of the Revolving Credit Facility.

Senior Notes due 2027 – On September 23, 2019, the Company issued $350.0 million aggregate principal amount of 5.0% Senior Notes due 2027 (the “2027 Notes”) pursuant to an Indenture, dated September 23, 2019 (the “2027 Indenture”), among the Company, the guarantors party thereto (the “Guarantors”) and U.S. Bank National Association, as Trustee (the “Trustee”). The 2027 Notes are guaranteed by each of the Company’s present and future direct and indirect wholly owned domestic subsidiaries that is a guarantor under the Company's Senior Secured Credit Facility. The 2027 Notes were offered and sold either to persons reasonably believed to be “qualified institutional buyers” pursuant to Rule 144A under the Securities Act of 1933 (the “Securities Act”) or to persons outside the United States under Regulation S of the Securities Act.

Senior Notes due 2030 – On June 9, 2022, the Company issued $500.0 million aggregate principal amount of 6.375% Senior Notes due 2030 (the “2030 Notes”) pursuant to an Indenture, dated June 9, 2022 (the "2030 Indenture"), among the Company, the Guarantors and the Trustee. The 2030 Notes were offered and sold either to

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persons reasonably believed to be “qualified institutional buyers” pursuant to Rule 144A under the Securities Act or to persons outside the United States under Regulation S of the Securities Act.

Interest on the 2030 Notes will be payable semi-annually in cash in arrears on January 15 and July 15 of each year, commencing on January 15, 2023, at a rate of 6.375% per annum. The 2030 Notes will mature on July 15, 2030. The Company used a portion of the net proceeds from the offering of the 2030 Notes to repay in full the outstanding borrowings under its Revolving Credit Facility and will use the remainder for general corporate purposes. The deferred financing costs associated with the 2030 Notes totaled $9.0 million and are recorded as a direct reduction from the carrying amount of the related debt.

The Company may redeem the 2030 Notes, in whole or in part, at any time on or after July 15, 2025 at certain specified redemption prices set forth in the 2030 Indenture. In addition, at any time prior to July 15, 2025, the Company may redeem the 2030 Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the 2030 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date plus an applicable “make-whole” premium. At any time prior to July 15, 2025, the Company may also redeem up to 40% of the aggregate principal amount of 2030 Notes issued under the Indenture with net cash proceeds of certain equity offerings at a redemption price equal to 106.375% of the principal amount of the 2030 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date.

The 2030 Indenture contains customary events of default, including, among other things, payment default, failure to comply with covenants or agreements contained in the 2030 Indenture or the 2030 Notes and certain provisions related to bankruptcy events. The 2030 Indenture also contains customary negative covenants.

Equipment Financing – In November 2021, the Company purchased material handling equipment, trucks and trailers previously leased under a master lease agreement and classified as finance leases. The purchase was funded with debt through the Master Lease Agreement and Interim Funding Schedule with Fifth Third. The assets acquired are titled to the Company and included in Property, plant and equipment, net on the Company's Condensed Consolidated Balance Sheet. The equipment financing has a term of between 12 and 84 months, based on the life of the equipment, and bears a weighted average interest of 1.4%. The current portion of the equipment financing is $9.8 million and the long-term portion is $14.3 million at September 30, 2022.

Valuation of Debt - The carrying amounts of current financial assets and liabilities approximate fair value because of the immediate or short-term maturity of these items. The following table presents the carrying and fair value of the Company’s 2027 Notes, 2030 Notes and Equipment Financing for the periods presented:

	September 30, 2022				March 31, 2022
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior Notes due 2027	$	320,555	$	350,000	$	349,902	$	350,000
Senior Notes due 2030	483,020		500,000		—		—
Equipment Financing	22,887		24,051		29,302		31,254
Total fair value	$	826,462	$	874,051	$	379,204	$	381,254

The fair values of the 2027 Notes and 2030 Notes were determined based on quoted market data for the Company’s 2027 Notes and 2030 Notes, respectively. The fair value of the Equipment Financing was determined based on a comparison of the interest rate and terms of such borrowings to the rates and terms of similar debt available for the period. The categorization of the framework used to evaluate the 2027 Notes, 2030 Notes and Equipment Financing are considered Level 2. The Company believes the carrying amount on the remaining long-term debt, including the Term Loan Facility and Revolving Credit Facility, is not materially different from its fair value as the interest rates and terms of the borrowings are similar to currently available borrowings.

9.COMMITMENTS AND CONTINGENCIES

Purchase Commitments - The Company has historically secured supplies of resin raw material by agreeing to purchase quantities during a future given period at a fixed price. These purchase contracts typically ranged from 1 to 12 months and occur in the ordinary course of business. The Company also enters into equipment purchase contracts with manufacturers. The Company does not have any outstanding purchase commitments with fixed priced and quantity as of September 30, 2022.

Litigation and Other Proceedings – The Company is involved from time to time in various legal proceedings that arise in the ordinary course of business, including but not limited to commercial disputes, environmental matters,

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employee related claims, intellectual property disputes and litigation in connection with transactions including acquisitions and divestitures. The Company does not believe that such litigation, claims, and administrative proceedings will have a material adverse impact on the Company’s financial position or results of operations. The Company records a liability when a loss is considered probable, and the amount can be reasonably estimated.

10.INCOME TAXES

The Company’s effective tax rate will vary based on a variety of factors, including overall profitability, the geographical mix of income before taxes and related tax rates in jurisdictions where it operates and other one-time charges, as well as the occurrence of discrete events. For the three months ended September 30, 2022 and 2021, the Company utilized an effective tax rate of 23.9% and 26.1%, respectively, to calculate its provision for income taxes. For the six months ended September 30, 2022 and 2021, the Company utilized an effective tax rate of 23.2% and 25.8%, respectively, to calculate its provision for income taxes. State and local income taxes increased the effective rate for the three and six months ended September 30, 2022 and 2021. The Company’s ESOP also increased the effective rate for three and six months ended September 30, 2021, which no longer impacts the effective tax rate after the repayment of the ESOP loan and the allocation of the remaining unallocated shares of Preferred Stock in the prior year. Additionally, discrete income tax benefits related to the stock-based compensation windfall decreased the rate for the three and six months ended September 30, 2022 and 2021.

11.STOCK-BASED COMPENSATION

ADS has several programs for stock-based payments to employees and non-employee members of its Board of Directors, including stock options, performance-based restricted stock units and restricted stock. Equity-classified restricted stock awards are measured based on the grant-date estimated fair value of each award. The Company accounts for all restricted stock granted to Directors as equity-classified awards. The Company recognized stock-based compensation expense in the following line items of the Condensed Consolidated Statements of Operations for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Component of income before income taxes:
Cost of goods sold	$	758	$	685	$	1,432	$	1,319
Selling, general and administrative expenses	6,702		4,933		12,301		10,950
Total stock-based compensation expense	$	7,460	$	5,618	$	13,733	$	12,269

The following table summarizes stock-based compensation expense by award type for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Stock-based compensation expense:
Stock Options	$	1,002	$	860	$	2,281	$	1,613
Restricted Stock	1,965		1,520		3,726		2,879
Performance-based Restricted Stock Units	4,052		2,773		6,792		6,961
Non-Employee Directors	441		465		934		816
Total stock-based compensation expense	$	7,460	$	5,618	$	13,733	$	12,269

2017 Omnibus Incentive Plan

On May 24, 2017, the Board of Directors approved the 2017 Omnibus Incentive Plan (the “2017 Incentive Plan”) which was approved by the Company’s stockholders on July 17, 2017. The 2017 Incentive Plan provides for the issuance of a maximum of 5.0 million shares of the Company’s common stock for awards made thereunder, which awards may consist of stock options, restricted stock, restricted stock units, stock appreciation rights, phantom stock, cash-based awards, performance awards (which may take the form of performance cash, performance units or performance shares) or other stock-based awards.

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Restricted Stock – During the three and six months ended September 30, 2022, the Company granted less than 0.1 million and 0.1 million shares, respectively of restricted stock with a grant date fair value of $3.3 million and $11.8 million, respectively.

Performance-based Restricted Stock Units ("Performance Units") – During the six months ended September 30, 2022, the Company granted 0.1 million performance share units at a grant date fair value of $6.6 million.

Options – During the six months ended September 30, 2022, the Company granted 0.1 million nonqualified stock options under the 2017 Incentive Plan with a grant date fair value of $5.5 million. The Company estimates the fair value of stock options using a Black-Scholes option-pricing model. The following table summarizes the assumptions used to estimate the fair value of stock-options during the period presented:

	Six Months Ended September 30, 2022
Common stock price	$99.29
Expected stock price volatility	41.1%
Risk-free interest rate	2.9%
Weighted-average expected option life (years)	6
Dividend yield	0.48%

12.BUSINESS SEGMENTS INFORMATION

The Company operates its business in three distinct reportable segments: “Pipe”, “International” and “Infiltrator.” “Allied Products & Other” represents the Company’s Allied Products and all other business segments. The Chief Operating Decision Maker (the “CODM”) evaluates segment reporting based on Net Sales and Segment Adjusted Gross Profit. The Company calculated Segment Adjusted Gross Profit as net sales less costs of goods sold, depreciation and amortization, stock-based compensation and non-cash charges. A measure of assets is not applicable, as segment assets are not regularly reviewed by the CODM for evaluating performance or allocating resources.

Pipe – The Pipe segment manufactures and markets high performance thermoplastic corrugated pipe throughout the United States. The Company maintains and serves these markets through product distribution relationships with many of the largest national and independent waterworks distributors, buying groups and co-ops, major national retailers as well as an extensive network of hundreds of small to medium-sized distributors across the United States.

Products include single wall pipe, N-12 HDPE pipe sold into the Storm sewer, Infrastructure and Agriculture markets, High Performance polypropylene pipe sold into the Storm sewer, Infrastructure and sanitary sewer markets. Products are designed primarily for storm water management in the construction and infrastructure marketplace across a broad range of end markets and applications, including non-residential, residential, agriculture and infrastructure. Products are manufactured using HDPE and polypropylene plastic material.

Infiltrator – Infiltrator is a leading national provider of plastic leach field chambers and systems, septic tanks and accessories, primarily for use in residential applications. Infiltrator products are used in onsite septic wastewater treatment systems in the United States and Canada.

International – The International segment manufactures and markets pipe and allied products in certain regions outside of the United States, including Company owned facilities in Canada, subsidiaries that distribute to Europe and the Middle East, exports and through the Company’s joint ventures with local partners in Mexico and South America. The Company’s Mexican joint venture, ADS Mexicana, primarily serves the Mexican and Central American markets, while its South American Joint Venture, Tigre-ADS, is the primary channel to serve the South American markets. The Company’s International product lines include single wall pipe, N-12 HDPE pipe, high performance PP pipe and certain geographies also sell our broad line of Allied Products.

Allied Products & Other – Allied Products and Other manufactures and markets products throughout the United States. Products include StormTech, Nyloplast, ARC Septic Chambers, Inserta Tee, BaySaver filters and water quality structures, Fittings, Cultec and FleXstorm. The Company maintains and serves these markets through product distribution relationships with many of the largest national and independent waterworks distributors, major national retailers as well as an extensive network of hundreds of small to medium-sized distributors across the United States. The Company also sells through a broad variety of buying groups and co-ops in the United States. The Company aggregates operating segments within the Allied Products & Other segment disclosure. None of the

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operating segments within the Allied Products & Other businesses segment disclosure exceeds the quantitative thresholds for separate segment reporting.

The following table sets forth reportable segment information with respect to the amount of Net sales contributed by each class of similar products for the periods presented:

	Three Months Ended
	September 30, 2022						September 30, 2021
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	500,978	$	(10,770)	$	490,208	$	384,521	$	(2,668)	$	381,853
Infiltrator	150,735		(22,450)		128,285		145,911		(22,412)		123,499
International
International - Pipe	56,461		(7,339)		49,122		50,141		(5,170)		44,971
International - Allied Products & Other	17,002		—		17,002		13,433		—		13,433
Total International	73,463		(7,339)		66,124		63,574		(5,170)		58,404
Allied Products & Other	202,200		(2,608)		199,592		145,719		(3,004)		142,715
Intersegment Eliminations	(43,167)		43,167		—		(33,254)		33,254		—
Total Consolidated	$	884,209	$	—	$	884,209	$	706,471	$	—	$	706,471
	Six Months Ended
	September 30, 2022						September 30, 2021
	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	1,025,835	$	(20,644)	$	1,005,191	$	758,531	$	(4,571)	$	753,960
Infiltrator	317,025		(51,356)		265,669		272,653		(41,449)		231,204
International
International - Pipe	109,880		(13,198)		96,682		100,979		(8,084)		92,895
International - Allied Products & Other	35,097		—		35,097		27,961		—		27,961
Total International	144,977		(13,198)		131,779		128,940		(8,084)		120,856
Allied Products & Other	401,109		(5,353)		395,756		272,755		(3,004)		269,751
Intersegment Eliminations	(90,551)		90,551		—		(57,108)		57,108		—
Total Consolidated	$	1,798,395	$	—	$	1,798,395	$	1,375,771	$	—	$	1,375,771

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The following sets forth certain financial information attributable to the reportable segments for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Segment Adjusted Gross Profit
Pipe	$	146,153	$	82,472	$	314,732	$	166,615
Infiltrator	71,278		58,847		147,072		118,249
International	17,630		15,077		38,114		36,455
Allied Products & Other	106,030		67,979		215,071		131,278
Intersegment Eliminations	430		1,479		(385)		1,465
Total	$	341,521	$	225,854	$	714,604	$	454,062
Depreciation and Amortization
Pipe	$	13,135	$	12,026	$	26,000	$	24,061
Infiltrator	5,027		3,375		9,894		6,811
International	1,283		1,290		2,654		2,748
Allied Products & Other(a)	16,477		17,503		32,952		35,230
Total	$	35,922	$	34,194	$	71,500	$	68,850
Capital Expenditures
Pipe	$	27,023	$	12,809	$	47,297	$	22,639
Infiltrator	8,514		22,134		21,046		35,160
International	1,114		1,264		2,027		1,514
Allied Products & Other(a)	2,705		2,011		5,175		4,451
Total	$	39,356	$	38,218	$	75,545	$	63,764

(a)Includes depreciation, amortization and capital expenditures not allocated to a reportable segment. The amortization expense of Infiltrator intangible assets acquired is included in Allied Products & Other.

Reconciliation of Gross Profit to Segment Adjusted Gross Profit

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	319,963	$	200,057	$	672,070	$	401,178
Depreciation and Amortization	20,800		17,250		41,102		34,782
ESOP and stock-based compensation expense	758		8,547		1,432		18,102
Total Segment Adjusted Gross Profit	$	341,521	$	225,854	$	714,604	$	454,062

13.SUBSEQUENT EVENTS

Common Stock Dividend - During the third quarter of fiscal 2023, the Company declared a quarterly cash dividend of $0.12 per share of common stock. The dividend is payable on December 15, 2022 to stockholders of record at the close of business on December 1, 2022.

Share Repurchase Program - During the third quarter of fiscal 2023, 0.3 million shares of common stock at a cost of $31.4 million were repurchased under the Board of Directors' authorization in February 2022.

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

Unless the context otherwise indicates or requires, as used in this Quarterly Report on Form 10-Q ("Form 10-Q"), the terms “we,” “our,” “us,” “ADS” and the “Company” refer to Advanced Drainage Systems, Inc. and its directly- and indirectly-owned subsidiaries as a combined entity, except where it is clear that the terms mean only Advanced Drainage Systems, Inc. exclusive of its subsidiaries.

Our fiscal year begins on April 1 and ends on March 31. Unless otherwise noted, references to “year” pertain to our fiscal year. For example, 2023 refers to fiscal 2023, which is the period from April 1, 2022 to March 31, 2023.

The following discussion and analysis of the financial condition and results of our operations should be read in conjunction with our Condensed Consolidated Financial Statements and related footnotes included elsewhere in this Form 10-Q and with the audited Consolidated Financial Statements included in our Fiscal 2022 Form 10-K, as filed with the Securities and Exchange Commission (the “SEC”) on May 19, 2022. In addition to historical condensed consolidated financial information, the following discussion contains forward-looking statements that reflect our plans, estimates and beliefs. Our actual results could differ materially from those discussed in the forward-looking statements. This discussion contains forward-looking statements that are based on the beliefs of our management, as well as assumptions made by, and information currently available to, our management. Our actual results could differ materially from those discussed in the forward-looking statements. For more information, see the section below entitled “Forward Looking Statements.”

We consolidate our joint ventures for purposes of GAAP, except for our South American Joint Venture.

Overview

ADS is the leading manufacturer of innovative water management solutions in the stormwater and onsite septic wastewater industries, providing superior drainage solutions for use in the construction and agriculture marketplaces. Our innovative products, for which we hold many patents, are used across a broad range of end markets and applications, including non-residential, infrastructure and agriculture applications. We have established a leading position in many of these end markets by leveraging our national sales and distribution platform, industry-acclaimed engineering support, overall product breadth and scale plus manufacturing excellence.

Executive Summary

Second Quarter Fiscal 2023 Results

•Net sales increased 25.2% to $884.2 million

•Net income increased 101.0% to $153.4 million

•Adjusted EBITDA, a non-GAAP measure, increased 59.7% to $263.2 million

Net sales increased $177.7 million, or 25.2%, to $884.2 million, as compared to $706.5 million in the prior year quarter. Domestic pipe sales increased $116.5 million, or 30.3%, to $501.0 million. Domestic allied products & other sales increased $56.5 million, or 38.8%, to $202.2 million. Infiltrator sales increased $4.8 million, or 3.3%, to $150.7 million. These increases were driven by double-digit sales growth in the U.S. construction and agriculture end markets. International sales increased $9.9 million, or 15.6%, to $73.5 million, driven by strong sales growth in the Canadian, Mexican and Exports businesses.

Gross profit increased $119.9 million, or 59.9%, to $320.0 million as compared to $200.1 million in the prior year. The increase in gross profit is primarily due to favorable pricing on pipe, onsite septic and allied products. This increase was partially offset by inflationary pressures on manufacturing and transportation costs.

Adjusted EBITDA, a non-GAAP measure, increased $98.4 million, or 59.7%, to $263.2 million, as compared to $164.8 million in the prior year. As a percentage of net sales, Adjusted EBITDA was 29.8% as compared to 23.3% in the prior year.

Year-to-date Fiscal 2023 Results

•Net sales increased 30.7% to $1,798.4 million

•Net income increased 122.8% to $341.9 million

•Adjusted EBITDA, a non-GAAP measure, increased 69.7% to $562.2 million

Net sales increased $422.6 million, or 30.7%, to $1,798.4 million, as compared to $1,375.8 million in the prior year quarter. Domestic pipe sales increased $267.3 million, or 35.2%, to $1,025.8 million. Domestic allied products & other

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sales increased $128.4 million, or 47.1%, to $401.1 million. Infiltrator sales increased $44.4 million, or 16.3%, to $317.0 million. These increases were driven by double-digit sales growth in the U.S. construction end markets. International sales increased $16.0 million, or 12.4%, to $145.0 million, driven by strong sales growth in the Canadian, Mexican and Exports businesses.

Gross profit increased $270.9 million, or 67.5%, to $672.1 million as compared to $401.2 million in the prior year. The increase in gross profit is primarily due to favorable pricing on pipe, onsite septic and allied products. This was partially offset by inflationary pressures of higher material and transportation costs along with higher manufacturing costs.

Adjusted EBITDA, a non-GAAP measure, increased $230.9 million, or 69.7%, to $562.2 million, as compared to $331.4 million in the prior year. The increase is primarily due to the factors mentioned above. As a percentage of net sales, Adjusted EBITDA was 31.3% as compared to 24.1% in the prior year.

Results of Operations

Comparison of the Three Months Ended September 30, 2022 to the Three Months Ended September 30, 2021

The following table summarizes our operating results as a percentage of net sales that have been derived from our Condensed Consolidated Financial Statements for the periods presented. We believe this presentation is useful to investors in comparing historical results.

	For the Three Months Ended September 30,
	2022				2021
Consolidated Statements of Operations data:	(In thousands)
Net sales	$	884,209	100.0	%	$	706,471	100.0	%
Cost of goods sold	564,246		63.8		506,414		71.7
Gross profit	319,963		36.2		200,057		28.3
Selling, general and administrative	88,639		10.0		73,951		10.5
(Gain) loss on disposal of assets and costs from exit and disposal activities	(102)		—		(901)		(0.1)
Intangible amortization	13,841		1.6		15,446		2.2
Income from operations	217,585		24.6		111,561		15.8
Interest expense	18,261		2.1		8,437		1.2
Derivative gains and other income, net	395		—		202		—
Income before income taxes	198,929		22.5		102,922		14.6
Income tax expense	47,508		5.4		26,816		3.8
Equity in net income of unconsolidated affiliates	(1,956)		(0.2)		(206)		—
Net income	153,377		17.3		76,312		10.8
Less: net income attributable to noncontrolling interest	1,370		0.2		953		0.1
Net income attributable to ADS	$	152,007	17.2	%	$	75,359	10.7	%

Net sales - The following table presents net sales to external customers by reportable segment for the three months ended September 30, 2022 and 2021.

(Amounts in thousands)	2022		2021		$ Variance		% Variance
Pipe	$	490,208	$	381,853	$	108,355	28.4	%
Infiltrator	128,285		123,499		4,786		3.9
International	66,124		58,404		7,720		13.2
Allied Products & Other	199,592		142,715		56,877		39.9
Total Consolidated	$	884,209	$	706,471	$	177,738	25.2	%

Our consolidated net sales for the three months ended September 30, 2022 increased by $177.7 million, or 25.2%, compared to the same period in fiscal 2022. The increase in net sales was primarily a result of growth in our domestic Pipe segment as well as growth in Allied Products & Other.

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Our Pipe and Infiltrator segments experienced growth primarily through improved pricing/mix of products sold. The increase in our International segment was driven by growth in the Canadian and Mexican businesses. Growth in Allied Products & Other was driven mainly by improved price/mix of products offerings.

Cost of goods sold and Gross profit - The following table presents gross profit by reportable segment for the three months ended September 30, 2022 and 2021.

(Amounts in thousands)	2022		2021		$ Variance		% Variance
Pipe	$	132,284	$	62,627	$	69,657	111.2	%
Infiltrator	66,224		55,350		10,874		19.6
International	16,263		13,792		2,471		17.9
Allied Products & Other	104,762		66,809		37,953		56.8
Intersegment eliminations	430		1,479		(1,049)		(70.9)
Total gross profit	$	319,963	$	200,057	$	119,906	59.9	%

Our consolidated Cost of goods sold for the three months ended September 30, 2022 increased by $57.8 million, or 11.4%, and our consolidated Gross profit increased by $119.9 million, or 59.9%, compared to the same period in fiscal 2022. The increase in our gross profit was due to an increase in net sales from improved pricing partially offset by inflationary pressures of higher transportation costs along with higher manufacturing costs.

Selling, general and administrative expenses

	Three Months Ended September 30,
(Amounts in thousands)	2022			2021
Selling, general and administrative expenses	$	88,639		$	73,951
% of Net sales	10.0		%	10.5		%

Selling, general and administrative expenses for three months ended September 30, 2022 increased $14.7 million from the same period in fiscal 2022 and as a percentage of sales, decreased by 0.5%. The increase in Selling, general and administrative expenses is the result of increased headcount to support business growth.

(Gain) loss on disposal of assets and costs from exit and disposal activities - The change in (Gain) loss on disposal of assets and costs from exit and disposal activities is primarily due to asset disposals.

Intangible amortization - Intangible amortization decreased $1.6 million due to the accelerated method of amortization for customer relationships.

Interest expense - Interest expense increased $9.8 million in the three months ended September 30, 2022 compared to the same period in the previous fiscal year. The increase was primarily due to increased average debt levels.

Derivative losses (gains) and other expense (income), net - Derivative losses (gains) and other expense (income) increased by $0.2 million for the three months ended September 30, 2022 compared to the same period in the previous fiscal year.

Income tax expense - The following table presents the effective tax rates for the three months ended September 30, 2022 and 2021.

	Three Months Ended September 30,
	2022		2021
Effective tax rate	23.9	%	26.1	%

The change in the effective tax rate for the three months ended September 30, 2022 was primarily related to the transition of the Company’s Employee Stock Ownership Plan (“ESOP”) and the repayment of the ESOP loan in the prior year.

See “Note 10. Income Taxes” for additional information.

Equity in net income of unconsolidated affiliates - The Equity in net income of unconsolidated affiliates increased for the three months ended September 30, 2022 as compared to the same period in the previous fiscal year due to an increase in the current period income at our South American Joint Venture.

Net income attributable to noncontrolling interest - Net income attributable to noncontrolling interest increased for three months ended September 30, 2022 due to an increase in net income at our ADS Mexicana joint venture.

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Comparison of the Six Months Ended September 30, 2022 to the Six Months Ended September 30, 2021

The following table summarizes our operating results as a percentage of net sales that have been derived from our Condensed Consolidated Financial Statements for the periods presented. We believe this presentation is useful to investors in comparing historical results.

	For the Six Months Ended September 30,
	2022				2021
Consolidated Statements of Operations data:	(In thousands)
Net sales	$	1,798,395	100.0	%	$	1,375,771	100.0	%
Cost of goods sold	1,126,325		62.6		974,593		70.8
Gross profit	672,070		37.4		401,178		29.2
Selling, general and administrative	175,159		9.7		150,172		10.9
(Gain) loss on disposal of assets and costs from exit and disposal activities	201		—		(912)		(0.1)
Intangible amortization	27,518		1.5		31,091		2.3
Income from operations	469,192		26.1		220,827		16.1
Interest expense	29,333		1.6		16,344		1.2
Derivative gains and other income, net	(1,507)		(0.1)		(1,812)		(0.1)
Income before income taxes	441,366		24.5		206,295		15.0
Income tax expense	102,573		5.7		53,271		3.9
Equity in net income of unconsolidated affiliates	(3,066)		(0.2)		(411)		—
Net income	341,859		19.0		153,435		11.2
Less: net income attributable to noncontrolling interest	2,706		0.2		2,089		0.2
Net income attributable to ADS	$	339,153	18.9	%	$	151,346	11.0	%

Net sales - The following table presents net sales to external customers by reportable segment for the six months ended September 30, 2022 and 2021.

(Amounts in thousands)	2022		2021		$ Variance		% Variance
Pipe	$	1,005,191	$	753,960	$	251,231	33.3	%
Infiltrator	265,669		231,204		34,465		14.9
International	131,779		120,856		10,923		9.0
Allied Products & Other	395,756		269,751		126,005		46.7
Total Consolidated	$	1,798,395	$	1,375,771	$	422,624	30.7	%

Our consolidated net sales for the six months ended September 30, 2022 increased by $422.6 million, or 30.7%, compared to the same period in fiscal 2022. The increase in net sales was primarily a result of growth in our domestic Pipe segment and Allied Products & Other along with both the Infiltrator and International segments.

Our Pipe and Infiltrator segments experienced growth primarily through improved pricing/mix of products sold. The increase in our International segment was driven by growth in the Canadian and Mexican businesses. Growth in Allied Products & Other was driven mainly by improved price/mix of products offerings.

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Cost of goods sold and Gross profit - The following table presents gross profit by reportable segment for the six months ended September 30, 2022 and 2021.

(Amounts in thousands)	2022		2021		$ Variance		% Variance
Pipe	$	287,383	$	125,927	$	161,456	128.2	%
Infiltrator	137,093		111,219		25,874		23.3
International	35,372		33,696		1,676		5.0
Allied Products & Other	212,607		128,871		83,736		65.0
Intersegment eliminations	(385)		1,465		(1,850)		(126.3)
Total gross profit	$	672,070	$	401,178	$	270,892	67.5	%

Our consolidated Cost of goods sold for the six months ended September 30, 2022 increased by $151.7 million, or 15.6%, and our consolidated Gross profit increased by $270.9 million, or 67.5%, compared to the same period in fiscal 2022. The increase in our gross profit was due to an increase in net sales from improved pricing partially offset by inflationary pressures of higher material and transportation costs along with higher manufacturing costs.

Selling, general and administrative expenses

	Six Months Ended September 30,
(Amounts in thousands)	2022			2021
Selling, general and administrative expenses	$	175,159		$	150,172
% of Net sales	9.7		%	10.9		%

Selling, general and administrative expenses for six months ended September 30, 2022 increased $25.0 million from the same period in fiscal 2022 and as a percentage of sales, decreased by 1.2%. The increase in Selling, general and administrative expenses is the result of increased headcount to support business growth.

(Gain) loss on disposal of assets and costs from exit and disposal activities - The change in (Gain) loss on disposal of assets and costs from exit and disposal activities is primarily due to asset disposals.

Intangible amortization - Intangible amortization decreased $3.6 million due to the accelerated method of amortization for customer relationships.

Interest expense - Interest expense increased $13.0 million in the six months ended September 30, 2022 compared to the same period in the previous fiscal year. The increase was primarily due to increased average debt levels.

Derivative losses (gains) and other expense (income), net - Derivative losses (gains) and other expense (income) decreased by $0.3 million for the six months ended September 30, 2022 compared to the same period in the previous fiscal year.

Income tax expense - The following table presents the effective tax rates for the six months ended September 30, 2022 and 2021.

	Six Months Ended September 30,
	2022		2021
Effective tax rate	23.2	%	25.8	%

The change in the effective tax rate for the six months ended September 30, 2022 was primarily related to the transition of the Company’s ESOP and the repayment of the ESOP loan in the prior year. See “Note 10. Income Taxes” for additional information.

Equity in net income of unconsolidated affiliates - The Equity in net income of unconsolidated affiliates increased for the six months ended September 30, 2022 as compared to the same period in the previous fiscal year due to an increase in the current period income at our South American Joint Venture.

Net income attributable to noncontrolling interest - Net income attributable to noncontrolling interest increased for six months ended September 30, 2022 due to an increase in net income at our ADS Mexicana joint venture.

Adjusted EBITDA and Adjusted EBITDA Margin - Adjusted EBITDA and Adjusted EBITDA Margin, which are non-GAAP financial measures, have been presented in this Form 10-Q as supplemental measures of financial performance that

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are not required by, or presented in accordance with GAAP and should not be considered as alternatives to net income as measures of financial performance or cash flows from operations or any other performance measure derived in accordance with GAAP. We calculate Adjusted EBITDA as net income (loss) before interest, income taxes, depreciation and amortization, stock-based compensation expense, non-cash charges and certain other expenses. We calculate Adjusted EBITDA Margin as Adjusted EBITDA divided by net sales.

Adjusted EBITDA and Adjusted EBITDA Margin are included in this Form 10-Q because they are key metrics used by management and our board of directors to assess our consolidated financial performance. These non-GAAP financial measures are frequently used by analysts, investors and other interested parties to evaluate companies in our industry. In addition to covenant compliance and executive performance evaluations, we use these non-GAAP financial measures to supplement GAAP measures of performance to evaluate the effectiveness of our consolidated business strategies, to make budgeting decisions and to compare our performance against that of other peer companies using similar measures. We use Adjusted EBITDA Margin to evaluate our ability to generate profitable sales.

Adjusted EBITDA and Adjusted EBITDA Margin contain certain other limitations, including the failure to reflect our cash expenditures, cash requirements for working capital needs, cash expenditures to replace assets being depreciated and amortized and interest expense, or the cash requirements necessary to service interest on principal payments on our indebtedness. In evaluating Adjusted EBITDA and Adjusted EBITDA Margin, you should be aware that in the future we will incur expenses that are the same as or similar to some of the adjustments in this presentation, such as stock-based compensation expense, derivative fair value adjustments, and foreign currency transaction losses. Management compensates for these limitations by relying on our GAAP results and using non-GAAP measures on a supplemental basis.

The following table presents a reconciliation of Adjusted EBITDA to Net income, the most comparable GAAP measure, for each of the periods presented.

	Three Months Ended September 30,						Six Months Ended September 30,
	2022			2021			2022			2021
	(In thousands)						(In thousands)
Net income	$	153,377		$	76,312		$	341,859		$	153,435
Depreciation and amortization	35,922			34,194			71,500			68,850
Interest expense	18,261			8,437			29,333			16,344
Income tax expense	47,508			26,816			102,573			53,271
EBITDA	255,068			145,759			545,265			291,900
(Gain) loss on disposal of assets and costs from exit and disposal activities	(102)			(901)			201			(912)
Stock-based compensation expense	7,460			5,618			13,733			12,269
ESOP compensation expense	—			12,013			—			26,168
Transaction costs(a)	368			834			2,083			877
Other adjustments(b)	408			1,481			963			1,084
Adjusted EBITDA	$	263,202		$	164,804		$	562,245		$	331,386
Adjusted EBITDA Margin	29.8		%	23.3		%	31.3		%	24.1		%

(a)Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with business or asset acquisitions and dispositions.

(b)Includes derivative fair value adjustments, foreign currency transaction (gains) losses, interest income, the proportionate share of interest, income taxes, depreciation and amortization related to the South American Joint Venture, which is accounted for under the equity method of accounting and executive retirement expense.

Liquidity and Capital Resources

Historically we have funded our operations through internally generated cash flow supplemented by debt financings, equity issuance and finance and operating leases. These sources have been sufficient historically to fund our primary liquidity requirements, including working capital, capital expenditures, debt service and dividend payments for our common stock. From time to time, we may explore additional financing methods and other means to raise capital. There can be no assurance that any additional financing will be available to us on acceptable terms or at all.

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The following table presents key liquidity metrics utilized by management. The table includes the Non-GAAP measure, Free Cash Flow, which is further discussed and defined below, and Leverage ratio which is calculated as net debt divided by the trailing twelve months Adjusted EBITDA.

	Six Months Ended September 30,
(Amounts in thousands)	2022		2021
Net cash provided by operating activities	$	437,024	$	94,878
Capital expenditures	(75,545)		(63,764)
Free Cash Flow	361,479		31,114
Total debt (debt and finance lease obligations)	1,311,227
Cash	457,357
Net debt (total debt less cash)	853,870
Leverage Ratio	1.0

Free Cash Flow - Free cash flow is a non-GAAP financial measure that comprises cash flow from operations less capital expenditures. Free cash flow is a measure used by management and our Board of Directors to assess our ability to generate cash. Accordingly, free cash flow has been presented in this Form 10-Q as a supplemental measure of liquidity that is not required by, or presented in accordance with GAAP, because management believes that free cash flow provides useful information to investors and others in understanding and evaluating our ability to generate cash flow from operations after capital expenditures.

Free cash flow is not a GAAP measure of our liquidity and should not be considered as an alternative to cash flow from operating activities as a measure of liquidity or any other liquidity measure derived in accordance with GAAP. Our measure of free cash flow is not necessarily comparable to other similarly titled captions of other companies due to different methods of calculation.

Net cash provided by operating activities increased $342.1 million to $437.0 million, as compared to $94.9 million in the prior year, primarily due to changes in net working capital. Free cash flow (Non-GAAP) increased $330.4 million to $361.5 million, as compared to $31.1 million in the prior year. Net debt (total debt and finance lease obligations net of cash) was $853.9 million as of September 30, 2022.

The following table summarizes our available liquidity for the period presented.

(Amounts in thousands)	September 30, 2022
Revolver capacity	$	600,000
Less: outstanding borrowings	—
Less: letters of credit	(11,650)
Revolver available liquidity	$	588,350

In addition to the available liquidity above, we have the ability to borrow up to $1.3 billion under our Senior Secured Credit Facility, subject to leverage ratio restrictions.

Working Capital and Cash Flows

As of September 30, 2022, we had $1,045.7 million in liquidity, including $457.4 million of cash, $588.4 million in borrowings available under our Revolving Credit Agreement, net of $11.7 million of outstanding letters of credit. We believe that our cash on hand, together with the availability of borrowings under our Credit Agreement and other financing arrangements and cash generated from operations, will be sufficient to meet our working capital requirements, anticipated capital expenditures, and scheduled principal and interest payments on our indebtedness for at least the next twelve months.

Working Capital - Working capital increased to $908.6 million as of September 30, 2022, from $480.7 million as of March 31, 2022. The increase in working capital is primarily due to increased cash from the issuance of our 2030 Notes and an increase in accounts receivable consistent with our increase in sales and partially offset by an increase in accounts payable and other accrued liabilities.

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	Six Months Ended September 30,
(Amounts in thousands)	2022		2021
Net cash provided by operating activities	$	437,024	$	94,878
Net cash used in investing activities	(123,509)		(62,208)
Net cash provided by (used in) financing activities	124,820		(213,593)

Operating Cash Flows – Cash flows from operating activities increased $342.1 million during the six months ended September 30, 2022 primarily driven by operating income and changes in net working capital.

Investing Cash Flows - Cash flows used in investing activities during the six months ended September 30, 2022 increased by $61.3 million compared to the same period in fiscal 2022. The increase in cash used in investing activities was primarily due to the acquisition of Cultec, net of cash acquired.

Capital expenditures totaled $75.5 million and $63.8 million for the six months ended September 30, 2022 and 2021, respectively. Our capital expenditures for the six months ended September 30, 2022 were used primarily to support facility expansions, equipment replacements and technology improvement initiatives.

We currently anticipate that we will make capital expenditures of approximately $175 million in fiscal year 2023, including approximately $85 million of open orders as of September 30, 2022. Such capital expenditures are expected to be financed using funds generated by operations. During the third quarter of fiscal 2023, we purchased land for our new Engineering & Technology Center for approximately $5 million.

Financing Cash Flows - During the six months ended September 30, 2022, cash provided by financing activities included the issuance of $500.0 million of 2030 Notes and proceeds of $123.2 million on our revolving credit facilities. Cash used in financing activities during the six months ended September 30, 2022 included payments of $237.5 million on our revolving credit facilities, repurchase of common stock of $192.6 million, $25.5 million of shares withheld for tax purposes, and $20.4 million of dividend payments.

During the six months ended September 30, 2021, cash used by financing activities included the repurchase of common stock of $292.0 million, repayment of $24.2 million on the Revolving Credit Facility, $13.0 million of shares withheld for tax purposes, $18.8 million of dividend payments and payments on our finance lease obligations of $10.4 million. Cash provided by financing activities included proceeds of $146.8 million on the Revolving Credit Facility.

Cash held by Foreign Subsidiaries - As of September 30, 2022, we had $16.9 million in cash that was held by our foreign subsidiaries, including $10.2 million held by our Canadian subsidiaries. We continue to evaluate our strategy regarding foreign cash, but our earnings in foreign subsidiaries still remain indefinitely reinvested, except for Canada. We plan to repatriate earnings from Canada and believe that there will be no additional tax costs associated with the repatriation of such earnings other than any potential non-U.S. withholding taxes.

Financing Transactions

Senior Secured Credit Facility - In July 2019, the Company entered into the Base Credit Agreement by and among the Company, as borrower, Barclays Bank PLC, as administrative agent, the several lenders from time to time party thereto. In September 2019, the Company amended the Base Credit Agreement. In May 2022, the Company entered into a Second Amendment to the Company’s Base Credit Agreement. The Senior Secured Credit Facility provides the Term Loan Facility in an initial aggregate principal amount of $700 million, the Revolving Credit Facility in an initial aggregate principal amount of up to $600 million, the L/C Facility in the initial aggregate available amount of up to $60 million, as a sublimit of such Revolving Credit Facility and a swing line sub-facility in the aggregate available amount of up to $50 million, as a sublimit of the Revolving Credit Facility. As of September 30, 2022, the outstanding principal drawn on Term Loan Facility was $430.8 million and there were no borrowings on the Revolving Credit Facility. The Company had $588.4 million available to be drawn on the Revolving Credit Facility, net of $11.7 million of outstanding letters of credit.

ADS Mexicana Revolving Credit Facility - The Company and ADS Mexicana amended its Intercompany Revolving Credit Promissory Note (the “Intercompany Note”) with a capacity of $9.5 million on June 6, 2022. The Intercompany Note matures on June 8, 2027. The Intercompany Note indemnifies the ADS Mexicana joint venture partner for 49% of any unpaid borrowing. The interest rates under the Intercompany Note are determined by certain base rates or LIBOR rates plus an applicable margin based on the Leverage Ratio. As of September 30, 2022 and March 31, 2022, there were no borrowings and $1.5 million of borrowings, respectively, outstanding under the Intercompany Note.

Issuance of Senior Notes due 2027 - On September 23, 2019, the Company issued $350.0 million aggregate principal amount of its 2027 Notes, pursuant to the 2027 Indenture among the Company, the Guarantors and the Trustee. The 2027

- 26 -

Notes are guaranteed by each of the Company’s present and future direct and indirect wholly owned domestic subsidiaries that is a guarantor under the Company's Senior Secured Credit Facility. The 2027 Notes were offered and sold either to persons reasonably believed to be “qualified institutional buyers” pursuant to Rule 144A under the Securities Act or to persons outside the United States under Regulation S of the Securities Act.

Interest on the 2027 Notes will be payable semi-annually in cash in arrears on March 31 and September 30 of each year, commencing on March 31, 2020, at a rate of 5.000% per annum. The 2027 Notes will mature on September 30, 2027. The Company used the majority of the net proceeds from the offering of the 2027 Notes for the repayment of $300.0 million of its outstanding borrowings under the Company’s Base Credit Agreement.

The Company may redeem the 2027 Notes, in whole or in part, at any time on or after September 30, 2022 at established redemption prices. At any time prior to September 30, 2022, the Company may also redeem up to 40% of the 2027 Notes with net cash proceeds of certain equity offerings at a redemption price equal to 105.000% of the principal amount of the 2027 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. In addition, at any time prior to September 30, 2022, the Company may redeem the 2027 Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the 2027 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date plus an applicable “make-whole” premium.

The 2027 Indenture contains customary events of default, including, among other things, payment default, failure to comply with covenants or agreements contained in the 2027 Indenture or the 2027 Notes and certain provisions related to bankruptcy events. The 2027 Indenture also contains customary negative covenants.

Issuance of Senior Notes Due 2030 – On June 9, 2022 the Company issued $500.0 million aggregate principal amount of 6.375% 2030 Notes pursuant to an Indenture, dated June 9, 2022 (the "2030 Indenture"), among the Company, the Guarantors and the Trustee. The 2030 Notes were offered and sold either to persons reasonably believed to be “qualified institutional buyers” pursuant to the Securities Act or to persons outside the United States under Regulation S of the Securities Act.

Interest on the 2030 Notes will be payable semi-annually in cash in arrears on January 15 and July 15 of each year, commencing on January 15, 2023, at a rate of 6.375% per annum. The 2030 Notes will mature on July 15, 2030. The Company used the majority of the net proceeds from the offering of the 2030 Notes to repay in full the outstanding borrowings under its Revolving Credit Facility and the remainder for general corporate purposes. The deferred financing costs associated with the 2030 Notes totaled $9.0 million and are recorded as a direct reduction from the carrying amount of the related debt.

The Company may redeem the 2030 Notes, in whole or in part, at any time on or after July 15, 2025 at certain specified redemption prices set forth in the 2030 Indenture. In addition, at any time prior to July 15, 2025, the Company may redeem the 2030 Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the 2030 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date plus an applicable “make-whole” premium. At any time prior to July 15, 2025, the Company may also redeem up to 40% of the aggregate principal amount of 2030 Notes issued under the Indenture with net cash proceeds of certain equity offerings at a redemption price equal to 106.375% of the principal amount of the 2030 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date.

The 2030 Indenture contains customary events of default, including, among other things, payment default, failure to comply with covenants or agreements contained in the 2030 Indenture or the 2030 Notes and certain provisions related to bankruptcy events. The 2030 Indenture also contains customary negative covenants.

Equipment Financing – In November 2021, the Company purchased material handling equipment, trucks and trailers previously leased under a master lease agreement and classified as finance leases. The purchase was funded with debt through the Master Lease Agreement and Interim Funding Schedule with Fifth Third. The assets acquired are titled to the Company and included in Property, plant and equipment, net on the Company's Condensed Consolidated Balance Sheet. The equipment financing has a balance of $24.1 million and has a term of between 12 and 84 months, based on the life of the equipment. The equipment financing bears a weighted average interest of 1.4%.

Covenant Compliance - The Senior Secured Credit Facility requires, if the aggregate amount of outstanding exposure under the Revolving Facility exceeds $210.0 million at the end of any fiscal quarter, the Company to maintain a consolidated senior secured net leverage ratio (commencing with the fiscal quarter ending March 31, 2020) not to exceed 4.25 to 1.00 for any four consecutive fiscal quarter periods.

The Senior Secured Credit Facility also includes other covenants, including negative covenants that, subject to certain exceptions, limit the Company’s and its restricted subsidiaries’ (as defined in the Credit Agreement) ability to, among other things: (i) incur additional debt, including guarantees; (ii) create liens upon any of their property; (iii) enter into any

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merger, consolidation or amalgamation, liquidate, wind up or dissolve, or dispose of all or substantially all of their property or business; (iv) dispose of assets; (v) pay subordinated debt; (vi) make certain investments; (vii) enter into swap agreements; (viii) engage in transactions with affiliates; (ix) engage in new lines of business; (x) modify certain material contractual obligations, organizational documents, accounting policies or fiscal year; or (xi) create or permit restrictions on the ability of any subsidiary of any Loan Party (as defined in the Senior Secured Credit Facility) to pay dividends or make distributions to the Company or any of its subsidiaries.

The Senior Secured Credit Facility also contains customary provisions requiring the following mandatory prepayments (subject to certain exceptions and limitations): (i) annual prepayments (beginning with the fiscal year ending March 31, 2021) with a percentage of excess cash flow (as defined in the Senior Secured Credit Facility); (ii) 100% of the net cash proceeds from any non-ordinary course sale of assets and certain casualty or condemnation events; and (iii) 100% of the net cash proceeds of indebtedness not permitted to be incurred under the Senior Secured Credit Facility.

For further information, see “Note 11. Debt” to the Consolidated Financial Statements in our Fiscal 2022 Form 10-K. We are in compliance with our debt covenants as of September 30, 2022.

Off-Balance Sheet Arrangements

Excluding the guarantees of 50% of certain debt of our unconsolidated South American Joint Venture as further discussed in “Note 7. Related Party Transactions” to the Condensed Consolidated Financial Statements, we do not have any other off-balance sheet arrangements. As of September 30, 2022, our South American Joint Venture had approximately $8.3 million of outstanding debt subject to our guarantees. We do not believe that this guarantee will have a current or future effect on our financial condition, results of operations, liquidity, or capital resources.

Critical Accounting Policies and Estimates

There have been no changes in critical accounting policies from those disclosed in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Fiscal 2022 Form 10-K, except as disclosed in "Note 1. Background and Summary of Significant Accounting Policies.”

Forward-Looking Statements

This Form 10-Q includes forward-looking statements. Some of the forward-looking statements can be identified by the use of terms such as “believes,” “expects,” “may,” “will,” “would,” “should,” “could,” “seeks,” “predict,” “potential,” “continue,” “intends,” “plans,” “projects,” “estimates,” “anticipates” or other comparable terms. These forward-looking statements include all matters that are not related to present facts or current conditions or that are not historical facts. They appear in a number of places throughout this Form 10-Q and include statements regarding our intentions, beliefs or current expectations concerning, among other things, our consolidated results of operations, financial condition, liquidity, prospects, growth strategies, and the industries in which we operate and include, without limitation, statements relating to our future performance.

Forward-looking statements are subject to known and unknown risks and uncertainties, many of which are beyond our control. We caution you that forward-looking statements are not guarantees of future performance and that our actual consolidated results of operations, financial condition, liquidity and industry development may differ materially from those made in or suggested by the forward-looking statements contained in this Form 10-Q. In addition, even if our actual consolidated results of operations, financial condition, liquidity and industry development are consistent with the forward-looking statements contained in this Form 10-Q, those results or developments may not be indicative of results or developments in subsequent periods. A number of important factors could cause actual results to differ materially from those contained in or implied by the forward-looking statements, including those reflected in forward-looking statements relating to our operations and business, the risks and uncertainties discussed in this Form 10-Q (including under the headings “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations”), and those described from time to time in our other filings with the SEC. Factors that could cause actual results to differ from those reflected in forward-looking statements relating to our operations and business include:

•fluctuations in the price and availability of resins and other raw materials and our ability to pass any increased costs of raw materials on to our customers in a timely manner;

•the risks related to the COVID-19 pandemic or other pandemics in the future;

•disruption or volatility in general business and economic conditions in the markets in which we operate;

•cyclicality and seasonality of the non-residential and residential construction markets and infrastructure spending;

•the risks of increasing competition in our existing and future markets;

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•uncertainties surrounding the integration and realization of anticipated benefits of acquisitions and similar transactions;

•the effect of any claims, litigation, investigations or proceedings, including those described under “Item 1. Legal Proceedings” of this Form 10-Q;

•the effect of weather or seasonality;

•the loss of any of our significant customers;

•the risks of doing business internationally;

•the risks of conducting a portion of our operations through joint ventures;

•our ability to expand into new geographic or product markets;

•our ability to achieve the acquisition component of our growth strategy;

•the risk associated with manufacturing processes;

•the effect of global climate change;

•cybersecurity risks;

•our ability to manage our supply purchasing and customer credit policies;

•our ability to control labor costs and to attract, train and retain highly qualified employees and key personnel;

•our ability to protect our intellectual property rights;

•changes in laws and regulations, including environmental laws and regulations;

•the risks associated with our current levels of indebtedness, including borrowings under our existing credit agreement and outstanding indebtedness under our existing senior notes; and

•other risks and uncertainties, including those listed under “Item 1A. Risk Factors.” in the Fiscal 2022 Form 10-K.

All forward-looking statements are made only as of the date of this report and we do not undertake any obligation, other than as may be required by law, to update or revise any forward-looking statements to reflect future events or developments. Comparisons of results for current and any prior periods are not intended to express any future trends, or indications of future performance, unless expressed as such, and should only be viewed as historical data.

Item 3.         Quantitative and Qualitative Disclosures about Market Risk

We are subject to various market risks, primarily related to changes in interest rates, credit, raw material supply prices and, to a lesser extent, foreign currency exchange rates. Our financial position, results of operations or cash flows may be negatively impacted in the event of adverse movements in the respective market rates or prices in each of these risk categories. Our exposure in each category is limited to those risks that arise in the normal course of business, as we do not engage in speculative, non-operating transactions. Our exposure to market risk has not materially changed from what we previously disclosed in Part II. Item 7A. “Quantitative and Qualitative Disclosures about Market Risk” of our Fiscal 2022 Form 10-K except as disclosed below.

Interest Rate Risk - We are subject to interest rate risk associated with our bank debt. Changes in interest rates impact the fair value of our fixed-rate debt, but there is no impact to earnings and cash flow. Alternatively, changes in interest rates do not affect the fair value of our variable-rate debt, but they do affect future earnings and cash flow. The Revolving Credit Facility and the Term Loan Facility bear variable interest rates. The Revolving Credit Facility and the Term Loan Facility bear interest either at SOFR or the Prime Rate, at our option, plus applicable pricing margins. A 1.0% increase in interest rates on our variable-rate debt would increase our annual forecasted interest expense by approximately $4.3 million based on our borrowings as of September 30, 2022. Assuming the Revolving Credit Facility is fully drawn, each 1.0% increase or decrease in the applicable interest rate would change our interest expense by approximately $10.3 million, for the twelve months ended September 30, 2022.

Item 4.         Controls and Procedures

Evaluation of Disclosure Controls and Procedures

The Company’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”) are responsible for evaluating the effectiveness of our disclosure controls and procedures as defined in the Securities Exchange Act of 1934, as amended (the “Exchange Act”), rules 13a-15(e) and 15d-15(e). The Company’s disclosure controls and procedures are designed to provide reasonable assurance that the information required to be disclosed in the Company’s reports under the Exchange

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Act, is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to management, including the Company’s CEO and CFO, as appropriate to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives, and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Based on the evaluation of our disclosure controls and procedures, our CEO and CFO concluded that the Company’s disclosure controls and procedures were effective as of the end of the period covered by this report.

Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act that occurred during the three months ended September 30, 2022 that has materially affected, or is reasonably likely to materially affect, internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1.         Legal Proceedings

The Company is involved from time to time in various legal proceedings that arise in the ordinary course of business, including but not limited to commercial disputes, environmental matters, employee related claims, intellectual property disputes and litigation in connection with transactions including acquisitions and divestitures. The Company does not believe that such litigation, claims, and administrative proceedings will have a material adverse impact on the Company’s financial position or results of operations.

Please see “Note 9. Commitments and Contingencies,” of the Condensed Consolidated Financial Statements of this Form 10-Q for more information regarding legal proceedings.

Item 1A.     Risk Factors

Important risk factors that could affect our operations and financial performance, or that could cause results or events to differ from current expectations, are described in “Part I, Item 1A — Risk Factors” of our Fiscal 2022 Form 10-K. These factors are further supplemented by those discussed in “Part II, Item 7A — Quantitative and Qualitative Disclosures about Market Risk” of our Fiscal 2022 Form 10-K and in “Part I, Item 3 — Quantitative and Qualitative Disclosures about Market Risk” and “Part II, Item 1 — Legal Proceedings” of this Form 10-Q.

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

In February 2022, our Board of Directors authorized a $1.0 billion common stock repurchase program. Repurchase of common stock will be made in accordance with applicable securities laws. During the three months ended September 30, 2022, the Company repurchased 1.1 million shares of common stock at a cost of $127.8 million. As of September 30, 2022, approximately $804.8 million of common stock may be repurchased under the authorization. The stock repurchase program does not obligate us to acquire any particular amount of common stock and may be suspended or terminated at any time at our discretion.

The following table provides information with respect to repurchases of our common stock by us and our “affiliated purchasers” (as defined by Rule 10b-18(a)(3) under the Exchange Act) during the three months ended September 30, 2022:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plan
	(amounts in thousands, except per share data)
July 1, 2022 to July 31, 2022	535	$	98.01	535	$	880,201
August 1, 2022 to August 31, 2022	259	139.83		259	843,992
September 1, 2022 to September 30, 2022	299	130.04		299	804,837
Total	1,093	$	116.93	1,093	$	804,837

Item 3.        Defaults Upon Senior Securities

None.

Item 4.        Mine Safety Disclosures

Not applicable.

Item 5.        Other Information

None.

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Item 6. Exhibits

The following exhibits are filed herewith or incorporated herein by reference.

Exhibit Number	Exhibit Description
31.1*	Certification of President and Chief Executive Officer of Advanced Drainage Systems, Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of Executive Vice President and Chief Financial Officer of Advanced Drainage Systems, Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*	Certification of Principal Executive Officer of Advanced Drainage Systems, Inc. pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*	Certification of Principal Financial Officer of Advanced Drainage Systems, Inc. pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH*	Inline XBRL Taxonomy Extension Schema.
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase.
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase.
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase.
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase.
104	The cover page for the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, has been formatted in Inline XBRL and contained in Exhibit 101.

* Filed herewith

- 32 -

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.

Date: November 3, 2022

ADVANCED DRAINAGE SYSTEMS, INC.
By:	/s/ D. Scott Barbour
	D. Scott Barbour
	President and Chief Executive Officer
	(Principal Executive Officer)
By:	/s/ Scott A. Cottrill
	Scott A. Cottrill
	Executive Vice President, Chief Financial Officer and Secretary
	(Principal Financial Officer)
By:	/s/ Tim A. Makowski
	Tim A. Makowski
	Vice President, Controller, and Chief Accounting Officer

- 33 -

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

I, D. Scott Barbour, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q (this “Report”) of the registrant, Advanced Drainage Systems, Inc.;

2.Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3.Based on my knowledge, the financial statements and other financial information included in this Report fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

d.Disclosed in this Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 3, 2022

By:	/s/ D. Scott Barbour
D. Scott Barbour
President and Chief Executive Officer
(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

I, Scott A. Cottrill, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q (this “Report”) of the registrant, Advanced Drainage Systems, Inc.;

2.Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3.Based on my knowledge, the financial statements and other financial information included in this Report fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

d.Disclosed in this Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 3, 2022

By:	/s/ Scott A. Cottrill
Scott A. Cottrill
Executive Vice President,
Chief Financial Officer and
Secretary
(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certifies, pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, and in accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, in his capacity as the principal executive officer of Advanced Drainage Systems, Inc. (the “Company”), that, to the best of his knowledge, the Quarterly Report on Form 10-Q of the Company for the quarter ended September 30, 2022 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods presented in the financial statements included in such report.

November 3, 2022

/s/ D. Scott Barbour

D. Scott Barbour

President and Chief Executive Officer

(Principal Executive Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate document. A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certifies, pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, and in accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, in his capacity as the principal financial officer of Advanced Drainage Systems, Inc. (the “Company”), that, to the best of his knowledge, the Quarterly Report on Form 10-Q of the Company for the quarter ended September 30, 2022 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods presented in the financial statements included in such report.

November 3, 2022

/s/ Scott A. Cottrill

Scott A. Cottrill

Chief Financial Officer

(Principal Financial Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate document. A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover - shares	6 Months Ended
	Sep. 30, 2022	Oct. 26, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-36557
Entity Registrant Name	ADVANCED DRAINAGE SYSTEMS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	51-0105665
Entity Address, Address Line One	4640 Trueman Boulevard
Entity Address, City or Town	Hilliard
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	43026
City Area Code	614
Local Phone Number	658-0050
Title of each class	Common Stock, $0.01 par value per share
Trading Symbol(s)	WMS
Name of each exchange on which registered	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		82,855,726
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
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Current Fiscal Year End Date	--03-31

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Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Mar. 31, 2022
Current assets:
Cash	$ 457,357	$ 20,125
Receivables (less allowance for doubtful accounts of $8,033 and $8,198, respectively)	387,952	341,753
Inventories	479,171	494,324
Other current assets	23,400	15,696
Total current assets	1,347,880	871,898
Property, plant and equipment, net	653,432	619,383
Other assets:
Goodwill	619,487	610,293
Intangible assets, net	435,281	431,385
Other assets	121,519	116,799
Total assets	3,177,599	2,649,758
Current liabilities:
Current maturities of debt obligations	16,765	19,451
Current maturities of finance lease obligations	5,358	5,089
Accounts payable	236,603	224,986
Other accrued liabilities	169,774	134,877
Accrued income taxes	10,800	6,838
Total current liabilities	439,300	391,241
Long-term debt obligations (less unamortized debt issuance costs of $12,825 and $1,648, respectively)	1,275,211	908,705
Long-term finance lease obligations	13,893	11,393
Deferred tax liabilities	164,945	168,435
Other liabilities	68,580	64,939
Total liabilities	1,961,929	1,544,713
Commitments and contingencies (see Note 9)
Mezzanine equity:
Redeemable common stock: $0.01 par value; 9,840 and 0 shares outstanding, respectively	159,928	0
Redeemable convertible preferred stock: $0.01 par value; 0 and 47,070 shares authorized, respectively; 0 and 44,170 shares issued; 0 and 15,630 shares outstanding, respectively	0	195,384
Total mezzanine equity	159,928	195,384
Stockholders’ equity:
Common stock; $0.01 par value: 1,000,000 shares authorized; 78,519 and 75,529 shares issued, respectively; 73,205 and 72,309 shares outstanding, respectively	11,642	11,612
Paid-in capital	1,119,453	1,065,628
Common stock in treasury, at cost	(536,697)	(318,691)
Accumulated other comprehensive loss	(33,775)	(24,386)
Retained earnings	477,790	158,876
Total ADS stockholders’ equity	1,038,413	893,039
Noncontrolling interest in subsidiaries	17,329	16,622
Total stockholders’ equity	1,055,742	909,661
Total liabilities, mezzanine equity and stockholders’ equity	$ 3,177,599	$ 2,649,758

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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Mar. 31, 2022
Allowance for doubtful accounts	$ 8,033	$ 8,198
Unamortized debt issuance costs	$ 12,825	$ 1,648
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	78,519,000	75,529,000
Common stock, shares outstanding (in shares)	73,205,000	72,309,000
Redeemable Common Stock
Mezzanine equity, par value per share	$ 0.01	$ 0.01
Mezzanine equity, shares outstanding (in shares)	9,840,000	0
Redeemable Convertible Preferred Stock
Mezzanine equity, par value per share	$ 0.01	$ 0.01
Mezzanine equity, shares outstanding (in shares)	0	15,630,000
Mezzanine equity, shares authorized (in shares)	0	47,070,000
Mezzanine equity, shares issued (in shares)	0	44,170,000

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Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Net sales	$ 884,209,000	$ 706,471,000	$ 1,798,395,000	$ 1,375,771,000
Cost of goods sold	564,246,000	506,414,000	1,126,325,000	974,593,000
Gross profit	319,963,000	200,057,000	672,070,000	401,178,000
Operating expenses:
Selling, general and administrative	88,639,000	73,951,000	175,159,000	150,172,000
(Gain) loss on disposal of assets and costs from exit and disposal activities	(102,000)	(901,000)	201,000	(912,000)
Intangible amortization	13,841,000	15,446,000	27,518,000	31,091,000
Income from operations	217,585,000	111,561,000	469,192,000	220,827,000
Other expense:
Interest expense	18,261,000	8,437,000	29,333,000	16,344,000
Derivative losses (gains) and other expense (income), net	395,000	202,000	(1,507,000)	(1,812,000)
Income before income taxes	198,929,000	102,922,000	441,366,000	206,295,000
Income tax expense	47,508,000	26,816,000	102,573,000	53,271,000
Equity in net income of unconsolidated affiliates	(1,956,000)	(206,000)	(3,066,000)	(411,000)
Net income	153,377,000	76,312,000	341,859,000	153,435,000
Less: net income attributable to noncontrolling interest	1,370,000	953,000	2,706,000	2,089,000
Net income attributable to ADS	$ 152,007,000	$ 75,359,000	$ 339,153,000	$ 151,346,000
Weighted average common shares outstanding:
Basic (in shares)	83,466	70,464	83,306	70,993
Diluted (in shares)	84,498	71,924	84,485	72,614
Net income per share:
Basic (in dollars per share)	$ 1.82	$ 0.90	$ 4.07	$ 1.78
Diluted (in dollars per share)	$ 1.80	$ 0.88	$ 4.01	$ 1.74

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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 153,377,000	$ 76,312,000	$ 341,859,000	$ 153,435,000
Currency translation (loss) gain	(5,763,000)	(3,406,000)	(9,661,000)	(1,365,000)
Comprehensive income	147,614,000	72,906,000	332,198,000	152,070,000
Less: other comprehensive (loss) income attributable to noncontrolling interest	(277,000)	(180,000)	(272,000)	435,000
Less: net income attributable to noncontrolling interest	1,370,000	953,000	2,706,000	2,089,000
Total comprehensive income attributable to ADS	$ 146,521,000	$ 72,133,000	$ 329,764,000	$ 149,546,000

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash Flows from Operating Activities
Net income	$ 341,859,000	$ 153,435,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	71,500,000	68,850,000
Deferred income taxes	(3,117,000)	15,000
(Gain) loss on disposal of assets and costs from exit and disposal activities	201,000	(912,000)
ESOP and stock-based compensation	13,733,000	38,437,000
Amortization of deferred financing charges	398,000	191,000
Fair market value adjustments to derivatives	2,183,000	(446,000)
Equity in net income of unconsolidated affiliates	(3,066,000)	(411,000)
Other operating activities	(713,000)	441,000
Changes in working capital:
Receivables	(43,680,000)	(138,063,000)
Inventories	15,799,000	(124,429,000)
Prepaid expenses and other current assets	(7,776,000)	(6,738,000)
Accounts payable, accrued expenses, and other liabilities	49,703,000	104,508,000
Net cash provided by operating activities	437,024,000	94,878,000
Cash Flows from Investing Activities
Capital expenditures	(75,545,000)	(63,764,000)
Acquisition, net of cash acquired	(48,010,000)	0
Other investing activities	46,000	1,556,000
Net cash used in investing activities	(123,509,000)	(62,208,000)
Cash Flows from Financing Activities
Payments on syndicated Term Loan Facility	(3,500,000)	(3,500,000)
Proceeds from Senior Notes due 2030	500,000,000	0
Debt issuance costs	(11,575,000)	0
Payments on Equipment Financing	(7,104,000)	0
Payments on finance lease obligations	(3,153,000)	(10,437,000)
Repurchase of common stock	(192,602,000)	(292,000,000)
Cash dividends paid	(20,367,000)	(18,758,000)
Dividends paid to noncontrolling interest holder	(1,727,000)	(1,471,000)
Proceeds from exercise of stock options	4,660,000	3,179,000
Payment of withholding taxes on vesting of restricted stock units	(25,512,000)	(12,976,000)
Other financing activities	0	(230,000)
Net cash provided by (used in) financing activities	124,820,000	(213,593,000)
Effect of exchange rate changes on cash	(1,103,000)	(81,000)
Net change in cash	437,232,000	(181,004,000)
Cash at beginning of period	20,125,000	195,009,000
Cash at end of period	457,357,000	14,005,000
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	101,470,000	61,813,000
Cash paid for interest	18,276,000	15,383,000
Non-cash operating, investing and financing activities:
Repurchase of common stock pending settlement	2,561,000	0
Acquisition of property, plant and equipment under finance lease and incurred lease obligations	6,681,000	11,403,000
Balance in accounts payable for the acquisition of property, plant and equipment	15,631,000	11,499,000
Revolving Credit Agreement
Cash Flows from Financing Activities
Proceeds from Revolving Credit Agreement	26,200,000	146,800,000
Payments on Revolving Credit Agreement	(140,500,000)	(24,200,000)
Amended Revolving Credit Facility
Cash Flows from Financing Activities
Proceeds from Revolving Credit Agreement	97,000,000	0
Payments on Revolving Credit Agreement	$ (97,000,000)	$ 0

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Condensed Consolidated Statements of Stockholders' Equity and Mezzanine Equity (Unaudited) - USD ($) shares in Thousands	Total	Total Mezzanine Equity	Total Mezzanine Equity ESOP share conversion	Total Mezzanine Equity KSOP redeemable common stock conversion	Redeemable Convertible Preferred Stock	Redeemable Convertible Preferred Stock ESOP share conversion	Deferred Compensation Unearned ESOP Shares	Redeemable Common Stock	Redeemable Common Stock ESOP share conversion	Redeemable Common Stock KSOP redeemable common stock conversion	Total ADS Stockholders’ Equity	Common Stock	Paid -In Capital	Common Stock in Treasury	Accumulated Other Compre-hensive Loss	Retained (Deficit) Earnings	Non- controlling Interest in Subsidiaries
Beginning balance, common stock (in shares) at Mar. 31, 2021												72,071
Beginning balance, treasury stock (in shares) at Mar. 31, 2021														501
Beginning balance at Mar. 31, 2021	$ 833,515,000										$ 819,784,000	$ 11,578,000	$ 918,587,000	$ (10,959,000)	$ (24,220,000)	$ (75,202,000)	$ 13,731,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	153,435,000										151,346,000					151,346,000	2,089,000
Other comprehensive (loss) income	(1,365,000)										(1,800,000)				(1,800,000)		435,000
Redeemable convertible preferred stock dividends	(3,097,000)										(3,097,000)					(3,097,000)
Common stock dividends	(15,661,000)										(15,661,000)					(15,661,000)
Dividends paid to noncontrolling interest holder	(1,471,000)																(1,471,000)
Share repurchases (in shares)														2,574
Share repurchases	(292,000,000)										(292,000,000)			$ (292,000,000)
Allocation of ESOP shares to participants for compensation	22,149,000	$ 4,019,000					$ 4,019,000				22,149,000		22,149,000
Exercise of common stock options (in shares)												124
Exercise of common stock options	3,180,000										3,180,000	$ 1,000	3,179,000
Restricted stock awards (in shares)												129		29
Restricted stock awards	(3,230,000)										(3,230,000)	$ 1,000		$ (3,231,000)
Performance-based restricted stock units (in shares)												245		92
Performance-based restricted stock units	(9,743,000)										(9,743,000)	$ 2,000		$ (9,745,000)
Stock-based compensation expense	12,269,000										12,269,000		12,269,000
ESOP distribution in common stock (in shares)												764
ESOP distribution in common stock	12,412,000										12,412,000	$ 8,000	12,404,000
Other	(390,000)										(390,000)		(390,000)
Ending balance, common stock (in shares) at Sep. 30, 2021												73,333
Ending balance, treasury stock (in shares) at Sep. 30, 2021														3,196
Ending balance at Sep. 30, 2021	710,003,000										695,219,000	$ 11,590,000	968,198,000	$ (315,935,000)	(26,020,000)	57,386,000	14,784,000
Mezzanine equity, beginning balance (in shares) at Mar. 31, 2021					19,275		966
Mezzanine equity, beginning balance at Mar. 31, 2021		229,911,000			$ 240,944,000		$ (11,033,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Allocation of ESOP shares to participants for compensation (in shares)							(322)
Allocation of ESOP shares to participants for compensation	$ 22,149,000	4,019,000					$ 4,019,000				22,149,000		22,149,000
ESOP distribution in common stock, temporary equity (in shares)					(993)
ESOP distribution in common stock		(12,412,000)			$ (12,412,000)
Mezzanine equity, ending balance (in shares) at Sep. 30, 2021							644	18,282
Mezzanine equity, ending balance at Sep. 30, 2021		221,518,000			$ 228,532,000		$ (7,014,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock dividends per share (in dollars per share)	$ 0.22
Beginning balance, common stock (in shares) at Jun. 30, 2021												73,227
Beginning balance, treasury stock (in shares) at Jun. 30, 2021														1,678
Beginning balance at Jun. 30, 2021	$ 806,304,000										791,779,000	$ 11,589,000	950,963,000	$ (139,313,000)	(22,794,000)	(8,666,000)	14,525,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	76,312,000										75,359,000					75,359,000	953,000
Other comprehensive (loss) income	(3,406,000)										(3,226,000)				(3,226,000)		(180,000)
Redeemable convertible preferred stock dividends	(1,547,000)										(1,547,000)					(1,547,000)
Common stock dividends	(7,760,000)										(7,760,000)					(7,760,000)
Dividends paid to noncontrolling interest holder	(514,000)																(514,000)
Share repurchases (in shares)														1,518
Share repurchases	(176,622,000)										(176,622,000)			$ (176,622,000)
Allocation of ESOP shares to participants for compensation	10,085,000	1,928,000					$ 1,928,000				10,085,000		10,085,000
Exercise of common stock options (in shares)												76
Exercise of common stock options	1,844,000										1,844,000	$ 1,000	1,843,000
Restricted stock awards (in shares)												30		0
Restricted stock awards	0										0	$ 0		$ 0
Performance-based restricted stock units (in shares)												0		0
Performance-based restricted stock units	5,618,000										5,618,000	$ 0		$ 0
Stock-based compensation expense	(311,000)										(311,000)		5,618,000
Other													(311,000)
Ending balance, common stock (in shares) at Sep. 30, 2021												73,333
Ending balance, treasury stock (in shares) at Sep. 30, 2021														3,196
Ending balance at Sep. 30, 2021	710,003,000										695,219,000	$ 11,590,000	968,198,000	$ (315,935,000)	(26,020,000)	57,386,000	14,784,000
Mezzanine equity, beginning balance (in shares) at Jun. 30, 2021					18,282		799
Mezzanine equity, beginning balance at Jun. 30, 2021		219,590,000			$ 228,532,000		$ (8,942,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Allocation of ESOP shares to participants for compensation (in shares)							(155)
Allocation of ESOP shares to participants for compensation	$ 10,085,000	1,928,000					$ 1,928,000				10,085,000		10,085,000
Mezzanine equity, ending balance (in shares) at Sep. 30, 2021							644	18,282
Mezzanine equity, ending balance at Sep. 30, 2021		221,518,000			$ 228,532,000		$ (7,014,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock dividends per share (in dollars per share)	$ 0.11
Beginning balance, common stock (in shares) at Mar. 31, 2022	72,309											75,529
Beginning balance, treasury stock (in shares) at Mar. 31, 2022														3,220
Beginning balance at Mar. 31, 2022	$ 909,661,000										893,039,000	$ 11,612,000	1,065,628,000	$ (318,691,000)	(24,386,000)	158,876,000	16,622,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	341,859,000										339,153,000					339,153,000	2,706,000
Other comprehensive (loss) income	(9,661,000)										(9,389,000)				(9,389,000)		(272,000)
Common stock dividends	(20,239,000)										(20,239,000)					(20,239,000)
Dividends paid to noncontrolling interest holder	$ (1,727,000)																(1,727,000)
Share repurchases (in shares)	1,900													1,865
Share repurchases	$ (195,163,000)										(195,163,000)			$ (195,163,000)
KSOP redeemable common stock conversion (in shares)												2,182
KSOP redeemable common stock conversion	35,456,000										35,456,000	$ 22,000	35,434,000
Exercise of common stock options (in shares)												183
Exercise of common stock options	4,660,000										4,660,000	$ 2,000	4,658,000
Restricted stock awards (in shares)												98		24
Restricted stock awards	(2,491,000)										(2,491,000)	$ 1,000		$ (2,492,000)
Performance-based restricted stock units (in shares)												527		205
Performance-based restricted stock units	(20,346,000)										(20,346,000)	$ 5,000		$ (20,351,000)
Stock-based compensation expense	$ 13,733,000										13,733,000		13,733,000
Ending balance, common stock (in shares) at Sep. 30, 2022	73,205											78,519
Ending balance, treasury stock (in shares) at Sep. 30, 2022														5,314
Ending balance at Sep. 30, 2022	$ 1,055,742,000										1,038,413,000	$ 11,642,000	1,119,453,000	$ (536,697,000)	(33,775,000)	477,790,000	17,329,000
Mezzanine equity, beginning balance (in shares) at Mar. 31, 2022					15,630			0
Mezzanine equity, beginning balance at Mar. 31, 2022	195,384,000	195,384,000			$ 195,384,000			$ 0
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary equity, conversion of convertible securities (in shares)						(15,630)			12,022	(2,182)
Temporary equity, conversion of convertible securities			$ 0	$ (35,456,000)		$ (195,384,000)			$ 195,384,000	$ (35,456,000)
Mezzanine equity, ending balance (in shares) at Sep. 30, 2022					0			9,840
Mezzanine equity, ending balance at Sep. 30, 2022	$ 159,928,000	159,928,000			$ 0			$ 159,928,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock dividends per share (in dollars per share)	$ 0.24
Beginning balance, common stock (in shares) at Jun. 30, 2022												76,607
Beginning balance, treasury stock (in shares) at Jun. 30, 2022														4,221
Beginning balance at Jun. 30, 2022	$ 1,007,959,000										989,996,000	$ 11,623,000	1,079,701,000	$ (408,861,000)	(28,289,000)	335,822,000	17,963,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	153,377,000										152,007,000					152,007,000	1,370,000
Other comprehensive (loss) income	(5,763,000)										(5,486,000)				(5,486,000)		(277,000)
Common stock dividends	(10,039,000)										(10,039,000)					(10,039,000)
Dividends paid to noncontrolling interest holder	$ (1,727,000)																(1,727,000)
Share repurchases (in shares)	1,100													1,093
Share repurchases	$ (127,802,000)										(127,802,000)			$ (127,802,000)
KSOP redeemable common stock conversion (in shares)												1,779
KSOP redeemable common stock conversion	28,900,000										28,900,000	$ 18,000	28,882,000
Exercise of common stock options (in shares)												116
Exercise of common stock options	3,411,000										3,411,000	$ 1,000	3,410,000
Restricted stock awards (in shares)												17		0
Restricted stock awards	(34,000)										(34,000)	$ 0		$ (34,000)
Stock-based compensation expense	$ 7,460,000										7,460,000		7,460,000
Ending balance, common stock (in shares) at Sep. 30, 2022	73,205											78,519
Ending balance, treasury stock (in shares) at Sep. 30, 2022														5,314
Ending balance at Sep. 30, 2022	$ 1,055,742,000										$ 1,038,413,000	$ 11,642,000	$ 1,119,453,000	$ (536,697,000)	$ (33,775,000)	$ 477,790,000	$ 17,329,000
Mezzanine equity, beginning balance (in shares) at Jun. 30, 2022					0			11,619
Mezzanine equity, beginning balance at Jun. 30, 2022		188,828,000			$ 0			$ 188,828,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary equity, conversion of convertible securities (in shares)										(1,779)
Temporary equity, conversion of convertible securities				$ (28,900,000)						$ (28,900,000)
Mezzanine equity, ending balance (in shares) at Sep. 30, 2022					0			9,840
Mezzanine equity, ending balance at Sep. 30, 2022	$ 159,928,000	$ 159,928,000			$ 0			$ 159,928,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock dividends per share (in dollars per share)	$ 0.12

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Condensed Consolidated Statements of Stockholders' Equity and Mezzanine Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Stockholders' Equity [Abstract]
Common stock dividends per share	$ 0.12	$ 0.11	$ 0.24	$ 0.22

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Background and Summary of Significant Accounting Policies

6 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

Background and Summary of Significant Accounting Policies

BACKGROUND AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business - Advanced Drainage Systems, Inc. and subsidiaries (collectively referred to as “ADS” or the “Company”), incorporated in Delaware, designs, manufactures and markets innovative water management solutions in the stormwater and onsite septic waste water industries, providing superior drainage solutions for use in the construction and agriculture marketplace. ADS’s products are used across a broad range of end markets and applications, including non-residential, infrastructure and agriculture applications.

The Company is managed and reports results of operations in three reportable segments: Pipe, Infiltrator Water Technologies Ultimate Holdings, Inc ("Infiltrator") and International. The Company also reports the results of its Allied Products and all other business segments as Allied Products and Other.

Historically, sales of the Company’s products have been higher in the first and second quarters of each fiscal year due to favorable weather and longer daylight conditions accelerating construction activity during these periods. Seasonal variations in operating results may also be impacted by inclement weather conditions, such as cold or wet weather, which can delay projects.

Basis of Presentation - The Company prepares its Condensed Consolidated Financial Statements in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The Condensed Consolidated Balance Sheet as of March 31, 2022 was derived from audited financial statements included in the Annual Report on Form 10-K for the year ended March 31, 2022 (“Fiscal 2022 Form 10-K”). The accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, of a normal recurring nature, necessary to present fairly its financial position as of September 30, 2022 and the results of operations for the three and six months ended September 30, 2022 and cash flows for the six months ended September 30, 2022. The interim Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements, including the notes thereto, filed in the Company’s Fiscal 2022 Form 10-K.

Principles of Consolidation - The Condensed Consolidated Financial Statements include the Company, its wholly-owned subsidiaries, its majority-owned subsidiaries and variable interest entities (“VIEs”) of which the Company is the primary beneficiary. The Company uses the equity method of accounting for equity investments where it exercises significant influence but does not hold a controlling financial interest. Such investments are recorded in Other assets in the Condensed Consolidated Balance Sheets and the related equity earnings from these investments are included in Equity in net income of unconsolidated affiliates in the Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation.

Recent Accounting Guidance

There have been no new accounting pronouncements issued or adopted since the filing of the Fiscal 2022 Form 10-K that have significance, or potential significance, to the Condensed Consolidated Financial Statements.

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Acquisitions

6 Months Ended

Sep. 30, 2022

Business Combination and Asset Acquisition [Abstract]

Acquisitions

ACQUISITIONS

Acquisition of Cultec - On April 29, 2022, the Company completed its acquisition of Cultec, Inc. (“Cultec”). Cultec was a family-owned technology leader in the stormwater and onsite septic wastewater industries. The acquisition of Cultec expands the Company’s portfolio of innovative water management solutions in the stormwater and onsite septic wastewater industries. The total fair value of consideration transferred was $48.0 million.

The following table summarizes the consideration transferred and the preliminary purchase price allocation of assets acquired and liabilities assumed. The purchase price allocation for assets acquired and liabilities assumed is preliminary and will be finalized when valuations are complete and final assessments of the fair value of acquired assets and assumed liabilities are completed. Such finalization may result in material changes from the preliminary purchase price allocation. The Company's estimates and assumptions are subject to change during the measurement

period (up to one year from the closing date), as the Company continues to finalize the valuations of assets acquired and liabilities assumed.

(Amounts in thousands)	Initial Amount		Increase to Purchase Price		Updated Amount
Accounts receivable	$	5,957	$	—	$	5,957
Inventory	4,469		—		4,469
Intangible assets	31,400		—		31,400
Goodwill	9,660		518		10,178
Property, plant and equipment	1,986		—		1,986
Accounts payable	(5,539)		—		(5,539)
Accrued expenses	(75)		—		(75)
Other liabilities	(366)		—		(366)
Total fair value of consideration transferred	$	47,492	$	518	$	48,010

The preliminary goodwill of $10.2 million represents the excess of consideration transferred over the preliminary fair value of assets acquired and liabilities assumed and is attributable to expected operating efficiencies. The goodwill is deductible for income tax purposes and is assigned to Allied Products & Other.

The preliminary purchase price excludes transaction costs. During the six months ended September 30, 2022, the Company incurred $1.5 million of transaction costs related to the acquisition such as legal, accounting, valuation and other professional services. These costs are included in selling, general and administrative expenses in the Consolidated Statements of Operations and Consolidated Statements of Comprehensive Income.

The identifiable intangible assets recorded in connection with the closing of the acquisition of Cultec are based on preliminary valuations including customer relationships, patents and developed technology and tradename and trademarks totaling $31.4 million.

(Amounts in thousands)	Preliminary fair value
Customer relationships	$	12,400
Patents and developed technology	16,200
Tradename and trademarks	2,800
Total identifiable intangible assets	$	31,400

The Company has excluded certain disclosures required under ASC 805, Business Combinations as they are not material to the financial statements.

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Revenue Recognition

6 Months Ended

Sep. 30, 2022

Revenue from Contract with Customer [Abstract]

Revenue Recognition

REVENUE RECOGNITION

Revenue Disaggregation - The Company disaggregates net sales by Domestic, International and Infiltrator and further disaggregates Domestic and International by product type, consistent with its reportable segment disclosure. This disaggregation level best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Refer to “Note 12. Business Segments Information” for the Company’s disaggregation of Net sales by reportable segment.

Contract Balances - The Company recognizes a contract asset representing the Company’s right to recover products upon the receipt of returned products and a contract liability for the customer refund. The following table presents the balance of the Company’s contract asset and liability as of the periods presented:

	September 30, 2022		March 31, 2022
	(In thousands)
Contract asset - product returns	$	1,105	$	978
Refund liability	3,487		2,356

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Leases	6 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	LEASESNature of the Company’s Leases - The Company has operating and finance leases for plants, yards, corporate offices, tractors, trailers and other equipment. The Company’s leases have remaining terms of less than one year to 28 years. A portion of the Company’s yard leases include an option to extend the leases for up to five years. The Company has included renewal options which are reasonably certain to be exercised in its right-of-use assets and lease liabilities.

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Inventories

6 Months Ended

Sep. 30, 2022

Inventory Disclosure [Abstract]

Inventories

INVENTORIES

Inventories as of the periods presented consisted of the following:

	September 30, 2022		March 31, 2022
	(In thousands)
Raw materials	$	146,757	$	156,050
Finished goods	332,414		338,274
Total inventories	$	479,171	$	494,324

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Net Income Per Share and Stockholders' Equity

6 Months Ended

Sep. 30, 2022

Net Income Per Share And Stockholders Equity [Abstract]

Net Income Per Share and Stockholders' Equity

NET INCOME PER SHARE AND STOCKHOLDERS' EQUITY

Employee Stock Ownership Plan ("ESOP") - As previously disclosed in the Fiscal 2022 Form 10-K, in April 2022 all currently outstanding 15.6 million shares of Preferred Stock held by the ESOP were converted into 12.0 million shares of the Company’s redeemable common stock at the Conversion rate of 0.7692. The Company’s 401(k) retirement plan (“KSOP”) holds these shares of common stock. When participants sell or forfeit these shares, the shares are no longer subject to the put option of the Internal Revenue Code and are no longer required to be classified in mezzanine equity.

Net Income per Share - For the three and six months ended September 30, 2021, the Company was required to apply the two-class method to compute both basic and diluted net income per share. Holders of redeemable convertible preferred stock participated in dividends on an as-converted basis when declared on common stock. As a result, redeemable convertible preferred stock met the definition of participating securities. The two-class method is an earnings allocation formula that treats participating securities as having rights to earnings that would otherwise have been available to common stockholders. The Company was not required to apply the two-class method to compute net income per share for the three and six months ended September 30, 2022 as the redeemable common stock and common stock have the same rights to earnings available to common stockholders.

The following table presents information necessary to calculate net income per share for the periods presented, as well as potentially dilutive securities excluded from the weighted average number of diluted common shares outstanding because their inclusion would have been anti-dilutive:

	Three Months Ended September 30,				Six Months Ended September 30,
(In thousands, except per share data)	2022		2021		2022		2021
NET INCOME PER SHARE—BASIC:
Net income attributable to ADS	$	152,007	$	75,359	$	339,153	$	151,346
Adjustments for:
Dividends to participating securities	—		(1,636)		—		(3,276)
Net income available to common stockholders and participating securities	152,007		73,723		339,153		148,070
Undistributed income allocated to participating securities	—		(10,494)		—		(21,430)
Net income available to common stockholders – Basic	$	152,007	$	63,229	$	339,153	$	126,640
Weighted average number of common shares outstanding – Basic	83,466		70,464		83,306		70,993
Net income per common share – Basic	$	1.82	$	0.90	$	4.07	$	1.78
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	152,007	$	63,229	$	339,153	$	126,640
Weighted average number of common shares outstanding – Basic	83,466		70,464		83,306		70,993
Assumed restricted stock	139		223		142		251
Assumed exercise of stock options	717		914		740		928
Assumed performance units	176		323		297		442
Weighted average number of common shares outstanding – Diluted	84,498		71,924		84,485		72,614
Net income per common share – Diluted	$	1.80	$	0.88	$	4.01	$	1.74
Potentially dilutive securities excluded as anti-dilutive	18		13,356		36		13,729

Stockholders’ Equity – During the three and six months ended September 30, 2022, the Company repurchased 1.1 million and 1.9 million shares, respectively, of common stock at a cost of $127.8 million and $195.2 million, respectively. The repurchases were made under the Board of Directors’ authorization in February 2022 to repurchase up to an additional $1.0 billion of ADS Common Stock in accordance with applicable securities laws. As of September 30, 2022, approximately $804.8 million of common stock may be repurchased under the authorization. The repurchase program does not obligate the Company to acquire any particular amount of common stock and may be suspended or terminated at any time at the Company’s discretion.

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Related Party Transactions

6 Months Ended

Sep. 30, 2022

Related Party Transactions [Abstract]

Related Party Transactions

RELATED PARTY TRANSACTIONS

ADS Mexicana - ADS conducts business in Mexico and Central America through its joint venture ADS Mexicana, S.A. de C.V. (“ADS Mexicana”). ADS owns 51% of the outstanding stock of ADS Mexicana and consolidates ADS Mexicana for financial reporting purposes.

On June 6, 2022, the Company and ADS Mexicana amended the Intercompany Revolving Credit Promissory Note (the “Intercompany Note”) with a borrowing capacity of $9.5 million. The Intercompany Note matures on June 8, 2027. The Intercompany Note indemnifies the ADS Mexicana joint venture partner for 49% of any unpaid borrowing. The interest rates under the Intercompany Note are determined by certain base rates or Secured Overnight Financing Rate (“SOFR”) plus an applicable margin based on the Leverage Ratio. As of September 30, 2022 and March 31, 2022, there were no borrowings and $1.5 million of borrowings, respectively, outstanding under the Intercompany Note.

South American Joint Venture - The Tuberias Tigre - ADS Limitada joint venture (the “South American Joint Venture”) manufactures and sells HDPE corrugated pipe in certain South American markets. ADS owns 50% of the South American Joint Venture. ADS is the guarantor of 50% of the South American Joint Venture’s credit arrangement, and the debt guarantee is shared equally with the joint venture partner. The Company’s maximum potential obligation under this guarantee is $11.0 million as of September 30, 2022. The maximum borrowings permitted under the South American Joint Venture’s credit facility are $22.0 million. The Company does not anticipate any required contributions related to the balance of this credit arrangement. As of September 30, 2022

and March 31, 2022, the outstanding principal balances of the credit facility including letters of credit were $8.3 million and $9.9 million, respectively. As of September 30, 2022, there were no U.S. dollar denominated loans. The weighted average interest rate as of September 30, 2022 was 12.0% on Chilean peso denominated loans.

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Debt

6 Months Ended

Sep. 30, 2022

Debt Disclosure [Abstract]

Debt

DEBT

Long-term debt as of the periods presented consisted of the following:

	September 30, 2022		March 31, 2022
	(In thousands)
Term Loan Facility	$	430,750	$	434,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		—
Revolving Credit Facility	—		114,300
Equipment Financing	24,051		31,254
Total	1,304,801		929,804
Unamortized debt issuance costs	(12,825)		(1,648)
Current maturities	(16,765)		(19,451)
Long-term debt obligations	$	1,275,211	$	908,705

Senior Secured Credit Facilities – In July 2019, the Company entered into the credit agreement (the “Base Credit Agreement”) by and among the Company, as borrower, Barclays Bank PLC, as administrative agent, the several lenders from time to time party thereto. In September 2019, the Company amended the Base Credit Agreement (as amended the “Senior Secured Credit Facility”). The Senior Secured Credit Facility provides for a term loan facility in an initial aggregate principal amount of $700 million (the “Term Loan Facility”), a revolving credit facility in an initial aggregate principal amount of up to $350 million (the “Revolving Credit Facility”), a letter of credit sub-facility in the initial aggregate available amount of up to $50 million, as a sublimit of such Revolving Credit Facility (the “L/C Facility”) and a swing line sub-facility in the aggregate available amount of up to $50 million, as a sublimit of the Revolving Credit Facility (together with the Term Loan Facility, the Revolving Credit Facility and the L/C Facility, the “Senior Secured Credit Facility”).

In May 2022, the Company entered into a Second Amendment (the "Second Amendment") to the Company's Base Credit Agreement with Barclays Bank PLC, as administrative agent under the Term Loan Facility, PNC Bank, National Association, as new administrative agent under the Revolving Credit Facility. Among other things, the Second Amendment (i) amended the Base Credit Agreement by increasing the Revolving Credit Facility (the "Amended Revolving Credit Facility") from $350 million to $600 million (including an increase of the sub-limit for the swing-line sub-facility from $50 million to $60 million), (ii) extended the maturity date of the Revolving Credit Facility to May 26, 2027, (iii) revised the “applicable margin” to provide an additional step-down to 175 basis points (for Term Benchmark based loans) and 75 basis points (for base rate loans) in the event the consolidated senior secured net leverage ratio is less than 2.00 to 1.00, and (iv) reset the “incremental amount” and the investment basket in non-guarantors and joint ventures. The Second Amendment also revises the reference interest rate from LIBOR to SOFR for both the Amended Revolving Credit Facility and the Term Loan Facility. Letters of credit outstanding at September 30, 2022 and March 31, 2022 amount to $11.7 million and $9.2 million, respectively, and reduced the availability of the Revolving Credit Facility.

Senior Notes due 2027 – On September 23, 2019, the Company issued $350.0 million aggregate principal amount of 5.0% Senior Notes due 2027 (the “2027 Notes”) pursuant to an Indenture, dated September 23, 2019 (the “2027 Indenture”), among the Company, the guarantors party thereto (the “Guarantors”) and U.S. Bank National Association, as Trustee (the “Trustee”). The 2027 Notes are guaranteed by each of the Company’s present and future direct and indirect wholly owned domestic subsidiaries that is a guarantor under the Company's Senior Secured Credit Facility. The 2027 Notes were offered and sold either to persons reasonably believed to be “qualified institutional buyers” pursuant to Rule 144A under the Securities Act of 1933 (the “Securities Act”) or to persons outside the United States under Regulation S of the Securities Act.

Senior Notes due 2030 – On June 9, 2022, the Company issued $500.0 million aggregate principal amount of 6.375% Senior Notes due 2030 (the “2030 Notes”) pursuant to an Indenture, dated June 9, 2022 (the "2030 Indenture"), among the Company, the Guarantors and the Trustee. The 2030 Notes were offered and sold either to

persons reasonably believed to be “qualified institutional buyers” pursuant to Rule 144A under the Securities Act or to persons outside the United States under Regulation S of the Securities Act.

Interest on the 2030 Notes will be payable semi-annually in cash in arrears on January 15 and July 15 of each year, commencing on January 15, 2023, at a rate of 6.375% per annum. The 2030 Notes will mature on July 15, 2030. The Company used a portion of the net proceeds from the offering of the 2030 Notes to repay in full the outstanding borrowings under its Revolving Credit Facility and will use the remainder for general corporate purposes. The deferred financing costs associated with the 2030 Notes totaled $9.0 million and are recorded as a direct reduction from the carrying amount of the related debt.

The Company may redeem the 2030 Notes, in whole or in part, at any time on or after July 15, 2025 at certain specified redemption prices set forth in the 2030 Indenture. In addition, at any time prior to July 15, 2025, the Company may redeem the 2030 Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the 2030 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date plus an applicable “make-whole” premium. At any time prior to July 15, 2025, the Company may also redeem up to 40% of the aggregate principal amount of 2030 Notes issued under the Indenture with net cash proceeds of certain equity offerings at a redemption price equal to 106.375% of the principal amount of the 2030 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date.

The 2030 Indenture contains customary events of default, including, among other things, payment default, failure to comply with covenants or agreements contained in the 2030 Indenture or the 2030 Notes and certain provisions related to bankruptcy events. The 2030 Indenture also contains customary negative covenants.

Equipment Financing – In November 2021, the Company purchased material handling equipment, trucks and trailers previously leased under a master lease agreement and classified as finance leases. The purchase was funded with debt through the Master Lease Agreement and Interim Funding Schedule with Fifth Third. The assets acquired are titled to the Company and included in Property, plant and equipment, net on the Company's Condensed Consolidated Balance Sheet. The equipment financing has a term of between 12 and 84 months, based on the life of the equipment, and bears a weighted average interest of 1.4%. The current portion of the equipment financing is $9.8 million and the long-term portion is $14.3 million at September 30, 2022.

Valuation of Debt - The carrying amounts of current financial assets and liabilities approximate fair value because of the immediate or short-term maturity of these items. The following table presents the carrying and fair value of the Company’s 2027 Notes, 2030 Notes and Equipment Financing for the periods presented:

	September 30, 2022				March 31, 2022
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior Notes due 2027	$	320,555	$	350,000	$	349,902	$	350,000
Senior Notes due 2030	483,020		500,000		—		—
Equipment Financing	22,887		24,051		29,302		31,254
Total fair value	$	826,462	$	874,051	$	379,204	$	381,254

The fair values of the 2027 Notes and 2030 Notes were determined based on quoted market data for the Company’s 2027 Notes and 2030 Notes, respectively. The fair value of the Equipment Financing was determined based on a comparison of the interest rate and terms of such borrowings to the rates and terms of similar debt available for the period. The categorization of the framework used to evaluate the 2027 Notes, 2030 Notes and Equipment Financing are considered Level 2. The Company believes the carrying amount on the remaining long-term debt, including the Term Loan Facility and Revolving Credit Facility, is not materially different from its fair value as the interest rates and terms of the borrowings are similar to currently available borrowings.

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Commitments and Contingencies

6 Months Ended

Sep. 30, 2022

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Purchase Commitments - The Company has historically secured supplies of resin raw material by agreeing to purchase quantities during a future given period at a fixed price. These purchase contracts typically ranged from 1 to 12 months and occur in the ordinary course of business. The Company also enters into equipment purchase contracts with manufacturers. The Company does not have any outstanding purchase commitments with fixed priced and quantity as of September 30, 2022.

Litigation and Other Proceedings – The Company is involved from time to time in various legal proceedings that arise in the ordinary course of business, including but not limited to commercial disputes, environmental matters,

employee related claims, intellectual property disputes and litigation in connection with transactions including acquisitions and divestitures. The Company does not believe that such litigation, claims, and administrative proceedings will have a material adverse impact on the Company’s financial position or results of operations. The Company records a liability when a loss is considered probable, and the amount can be reasonably estimated.

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Income Taxes	6 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXESThe Company’s effective tax rate will vary based on a variety of factors, including overall profitability, the geographical mix of income before taxes and related tax rates in jurisdictions where it operates and other one-time charges, as well as the occurrence of discrete events. For the three months ended September 30, 2022 and 2021, the Company utilized an effective tax rate of 23.9% and 26.1%, respectively, to calculate its provision for income taxes. For the six months ended September 30, 2022 and 2021, the Company utilized an effective tax rate of 23.2% and 25.8%, respectively, to calculate its provision for income taxes. State and local income taxes increased the effective rate for the three and six months ended September 30, 2022 and 2021. The Company’s ESOP also increased the effective rate for three and six months ended September 30, 2021, which no longer impacts the effective tax rate after the repayment of the ESOP loan and the allocation of the remaining unallocated shares of Preferred Stock in the prior year. Additionally, discrete income tax benefits related to the stock-based compensation windfall decreased the rate for the three and six months ended September 30, 2022 and 2021.

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Stock-Based Compensation

6 Months Ended

Sep. 30, 2022

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

STOCK-BASED COMPENSATION

ADS has several programs for stock-based payments to employees and non-employee members of its Board of Directors, including stock options, performance-based restricted stock units and restricted stock. Equity-classified restricted stock awards are measured based on the grant-date estimated fair value of each award. The Company accounts for all restricted stock granted to Directors as equity-classified awards. The Company recognized stock-based compensation expense in the following line items of the Condensed Consolidated Statements of Operations for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Component of income before income taxes:
Cost of goods sold	$	758	$	685	$	1,432	$	1,319
Selling, general and administrative expenses	6,702		4,933		12,301		10,950
Total stock-based compensation expense	$	7,460	$	5,618	$	13,733	$	12,269

The following table summarizes stock-based compensation expense by award type for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Stock-based compensation expense:
Stock Options	$	1,002	$	860	$	2,281	$	1,613
Restricted Stock	1,965		1,520		3,726		2,879
Performance-based Restricted Stock Units	4,052		2,773		6,792		6,961
Non-Employee Directors	441		465		934		816
Total stock-based compensation expense	$	7,460	$	5,618	$	13,733	$	12,269

2017 Omnibus Incentive Plan

On May 24, 2017, the Board of Directors approved the 2017 Omnibus Incentive Plan (the “2017 Incentive Plan”) which was approved by the Company’s stockholders on July 17, 2017. The 2017 Incentive Plan provides for the issuance of a maximum of 5.0 million shares of the Company’s common stock for awards made thereunder, which awards may consist of stock options, restricted stock, restricted stock units, stock appreciation rights, phantom stock, cash-based awards, performance awards (which may take the form of performance cash, performance units or performance shares) or other stock-based awards.

Restricted Stock – During the three and six months ended September 30, 2022, the Company granted less than 0.1 million and 0.1 million shares, respectively of restricted stock with a grant date fair value of $3.3 million and $11.8 million, respectively.

Performance-based Restricted Stock Units ("Performance Units") – During the six months ended September 30, 2022, the Company granted 0.1 million performance share units at a grant date fair value of $6.6 million.

Options – During the six months ended September 30, 2022, the Company granted 0.1 million nonqualified stock options under the 2017 Incentive Plan with a grant date fair value of $5.5 million. The Company estimates the fair value of stock options using a Black-Scholes option-pricing model. The following table summarizes the assumptions used to estimate the fair value of stock-options during the period presented:

	Six Months Ended September 30, 2022
Common stock price	$99.29
Expected stock price volatility	41.1%
Risk-free interest rate	2.9%
Weighted-average expected option life (years)	6
Dividend yield	0.48%

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Business Segments Information

6 Months Ended

Sep. 30, 2022

Segment Reporting [Abstract]

Business Segments Information

BUSINESS SEGMENTS INFORMATION

The Company operates its business in three distinct reportable segments: “Pipe”, “International” and “Infiltrator.” “Allied Products & Other” represents the Company’s Allied Products and all other business segments. The Chief Operating Decision Maker (the “CODM”) evaluates segment reporting based on Net Sales and Segment Adjusted Gross Profit. The Company calculated Segment Adjusted Gross Profit as net sales less costs of goods sold, depreciation and amortization, stock-based compensation and non-cash charges. A measure of assets is not applicable, as segment assets are not regularly reviewed by the CODM for evaluating performance or allocating resources.

Pipe – The Pipe segment manufactures and markets high performance thermoplastic corrugated pipe throughout the United States. The Company maintains and serves these markets through product distribution relationships with many of the largest national and independent waterworks distributors, buying groups and co-ops, major national retailers as well as an extensive network of hundreds of small to medium-sized distributors across the United States.

Products include single wall pipe, N-12 HDPE pipe sold into the Storm sewer, Infrastructure and Agriculture markets, High Performance polypropylene pipe sold into the Storm sewer, Infrastructure and sanitary sewer markets. Products are designed primarily for storm water management in the construction and infrastructure marketplace across a broad range of end markets and applications, including non-residential, residential, agriculture and infrastructure. Products are manufactured using HDPE and polypropylene plastic material.

Infiltrator – Infiltrator is a leading national provider of plastic leach field chambers and systems, septic tanks and accessories, primarily for use in residential applications. Infiltrator products are used in onsite septic wastewater treatment systems in the United States and Canada.

International – The International segment manufactures and markets pipe and allied products in certain regions outside of the United States, including Company owned facilities in Canada, subsidiaries that distribute to Europe and the Middle East, exports and through the Company’s joint ventures with local partners in Mexico and South America. The Company’s Mexican joint venture, ADS Mexicana, primarily serves the Mexican and Central American markets, while its South American Joint Venture, Tigre-ADS, is the primary channel to serve the South American markets. The Company’s International product lines include single wall pipe, N-12 HDPE pipe, high performance PP pipe and certain geographies also sell our broad line of Allied Products.

Allied Products & Other – Allied Products and Other manufactures and markets products throughout the United States. Products include StormTech, Nyloplast, ARC Septic Chambers, Inserta Tee, BaySaver filters and water quality structures, Fittings, Cultec and FleXstorm. The Company maintains and serves these markets through product distribution relationships with many of the largest national and independent waterworks distributors, major national retailers as well as an extensive network of hundreds of small to medium-sized distributors across the United States. The Company also sells through a broad variety of buying groups and co-ops in the United States. The Company aggregates operating segments within the Allied Products & Other segment disclosure. None of the

operating segments within the Allied Products & Other businesses segment disclosure exceeds the quantitative thresholds for separate segment reporting.

The following table sets forth reportable segment information with respect to the amount of Net sales contributed by each class of similar products for the periods presented:

	Three Months Ended
	September 30, 2022						September 30, 2021
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	500,978	$	(10,770)	$	490,208	$	384,521	$	(2,668)	$	381,853
Infiltrator	150,735		(22,450)		128,285		145,911		(22,412)		123,499
International
International - Pipe	56,461		(7,339)		49,122		50,141		(5,170)		44,971
International - Allied Products & Other	17,002		—		17,002		13,433		—		13,433
Total International	73,463		(7,339)		66,124		63,574		(5,170)		58,404
Allied Products & Other	202,200		(2,608)		199,592		145,719		(3,004)		142,715
Intersegment Eliminations	(43,167)		43,167		—		(33,254)		33,254		—
Total Consolidated	$	884,209	$	—	$	884,209	$	706,471	$	—	$	706,471
	Six Months Ended
	September 30, 2022						September 30, 2021
	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	1,025,835	$	(20,644)	$	1,005,191	$	758,531	$	(4,571)	$	753,960
Infiltrator	317,025		(51,356)		265,669		272,653		(41,449)		231,204
International
International - Pipe	109,880		(13,198)		96,682		100,979		(8,084)		92,895
International - Allied Products & Other	35,097		—		35,097		27,961		—		27,961
Total International	144,977		(13,198)		131,779		128,940		(8,084)		120,856
Allied Products & Other	401,109		(5,353)		395,756		272,755		(3,004)		269,751
Intersegment Eliminations	(90,551)		90,551		—		(57,108)		57,108		—
Total Consolidated	$	1,798,395	$	—	$	1,798,395	$	1,375,771	$	—	$	1,375,771

The following sets forth certain financial information attributable to the reportable segments for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Segment Adjusted Gross Profit
Pipe	$	146,153	$	82,472	$	314,732	$	166,615
Infiltrator	71,278		58,847		147,072		118,249
International	17,630		15,077		38,114		36,455
Allied Products & Other	106,030		67,979		215,071		131,278
Intersegment Eliminations	430		1,479		(385)		1,465
Total	$	341,521	$	225,854	$	714,604	$	454,062
Depreciation and Amortization
Pipe	$	13,135	$	12,026	$	26,000	$	24,061
Infiltrator	5,027		3,375		9,894		6,811
International	1,283		1,290		2,654		2,748
Allied Products & Other(a)	16,477		17,503		32,952		35,230
Total	$	35,922	$	34,194	$	71,500	$	68,850
Capital Expenditures
Pipe	$	27,023	$	12,809	$	47,297	$	22,639
Infiltrator	8,514		22,134		21,046		35,160
International	1,114		1,264		2,027		1,514
Allied Products & Other(a)	2,705		2,011		5,175		4,451
Total	$	39,356	$	38,218	$	75,545	$	63,764

(a)Includes depreciation, amortization and capital expenditures not allocated to a reportable segment. The amortization expense of Infiltrator intangible assets acquired is included in Allied Products & Other.

Reconciliation of Gross Profit to Segment Adjusted Gross Profit

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	319,963	$	200,057	$	672,070	$	401,178
Depreciation and Amortization	20,800		17,250		41,102		34,782
ESOP and stock-based compensation expense	758		8,547		1,432		18,102
Total Segment Adjusted Gross Profit	$	341,521	$	225,854	$	714,604	$	454,062

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Subsequent Events

6 Months Ended

Sep. 30, 2022

Subsequent Events [Abstract]

Subsequent Events

SUBSEQUENT EVENTS

Common Stock Dividend - During the third quarter of fiscal 2023, the Company declared a quarterly cash dividend of $0.12 per share of common stock. The dividend is payable on December 15, 2022 to stockholders of record at the close of business on December 1, 2022.

Share Repurchase Program - During the third quarter of fiscal 2023, 0.3 million shares of common stock at a cost of $31.4 million were repurchased under the Board of Directors' authorization in February 2022.

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Background and Summary of Significant Accounting Policies (Policies)

6 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation - The Company prepares its Condensed Consolidated Financial Statements in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The Condensed Consolidated Balance Sheet as of March 31, 2022 was derived from audited financial statements included in the Annual Report on Form 10-K for the year ended March 31, 2022 (“Fiscal 2022 Form 10-K”). The accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, of a normal recurring nature, necessary to present fairly its financial position as of September 30, 2022 and the results of operations for the three and six months ended September 30, 2022 and cash flows for the six months ended September 30, 2022. The interim Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements, including the notes thereto, filed in the Company’s Fiscal 2022 Form 10-K.

Principles of Consolidation

Principles of Consolidation - The Condensed Consolidated Financial Statements include the Company, its wholly-owned subsidiaries, its majority-owned subsidiaries and variable interest entities (“VIEs”) of which the Company is the primary beneficiary. The Company uses the equity method of accounting for equity investments where it exercises significant influence but does not hold a controlling financial interest. Such investments are recorded in Other assets in the Condensed Consolidated Balance Sheets and the related equity earnings from these investments are included in Equity in net income of unconsolidated affiliates in the Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation.

Recent Accounting Guidance

Recent Accounting Guidance

There have been no new accounting pronouncements issued or adopted since the filing of the Fiscal 2022 Form 10-K that have significance, or potential significance, to the Condensed Consolidated Financial Statements.

Leases

Nature of the Company’s Leases - The Company has operating and finance leases for plants, yards, corporate offices, tractors, trailers and other equipment. The Company’s leases have remaining terms of less than one year to 28 years. A portion of the Company’s yard leases include an option to extend the leases for up to five years. The Company has included renewal options which are reasonably certain to be exercised in its right-of-use assets and lease liabilities.

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Acquisitions (Tables)

6 Months Ended

Sep. 30, 2022

Business Combination and Asset Acquisition [Abstract]

Summary of Consideration Transferred and Preliminary Purchase Price Allocation of Assets Acquired and Liabilities Assumed

The following table summarizes the consideration transferred and the preliminary purchase price allocation of assets acquired and liabilities assumed. The purchase price allocation for assets acquired and liabilities assumed is preliminary and will be finalized when valuations are complete and final assessments of the fair value of acquired assets and assumed liabilities are completed. Such finalization may result in material changes from the preliminary purchase price allocation. The Company's estimates and assumptions are subject to change during the measurement

period (up to one year from the closing date), as the Company continues to finalize the valuations of assets acquired and liabilities assumed.

(Amounts in thousands)	Initial Amount		Increase to Purchase Price		Updated Amount
Accounts receivable	$	5,957	$	—	$	5,957
Inventory	4,469		—		4,469
Intangible assets	31,400		—		31,400
Goodwill	9,660		518		10,178
Property, plant and equipment	1,986		—		1,986
Accounts payable	(5,539)		—		(5,539)
Accrued expenses	(75)		—		(75)
Other liabilities	(366)		—		(366)
Total fair value of consideration transferred	$	47,492	$	518	$	48,010

Summary of Identifiable Intangible Assets

The identifiable intangible assets recorded in connection with the closing of the acquisition of Cultec are based on preliminary valuations including customer relationships, patents and developed technology and tradename and trademarks totaling $31.4 million.

(Amounts in thousands)	Preliminary fair value
Customer relationships	$	12,400
Patents and developed technology	16,200
Tradename and trademarks	2,800
Total identifiable intangible assets	$	31,400

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Revenue Recognition (Tables)

6 Months Ended

Sep. 30, 2022

Revenue from Contract with Customer [Abstract]

Schedule of Contract Asset and Liability

The following table presents the balance of the Company’s contract asset and liability as of the periods presented:

	September 30, 2022		March 31, 2022
	(In thousands)
Contract asset - product returns	$	1,105	$	978
Refund liability	3,487		2,356

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Inventories (Tables)

6 Months Ended

Sep. 30, 2022

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories as of the periods presented consisted of the following:

	September 30, 2022		March 31, 2022
	(In thousands)
Raw materials	$	146,757	$	156,050
Finished goods	332,414		338,274
Total inventories	$	479,171	$	494,324

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Net Income Per Share and Stockholders' Equity (Tables)

6 Months Ended

Sep. 30, 2022

Net Income Per Share And Stockholders Equity [Abstract]

Summary of Net Income Per Share

The following table presents information necessary to calculate net income per share for the periods presented, as well as potentially dilutive securities excluded from the weighted average number of diluted common shares outstanding because their inclusion would have been anti-dilutive:

	Three Months Ended September 30,				Six Months Ended September 30,
(In thousands, except per share data)	2022		2021		2022		2021
NET INCOME PER SHARE—BASIC:
Net income attributable to ADS	$	152,007	$	75,359	$	339,153	$	151,346
Adjustments for:
Dividends to participating securities	—		(1,636)		—		(3,276)
Net income available to common stockholders and participating securities	152,007		73,723		339,153		148,070
Undistributed income allocated to participating securities	—		(10,494)		—		(21,430)
Net income available to common stockholders – Basic	$	152,007	$	63,229	$	339,153	$	126,640
Weighted average number of common shares outstanding – Basic	83,466		70,464		83,306		70,993
Net income per common share – Basic	$	1.82	$	0.90	$	4.07	$	1.78
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	152,007	$	63,229	$	339,153	$	126,640
Weighted average number of common shares outstanding – Basic	83,466		70,464		83,306		70,993
Assumed restricted stock	139		223		142		251
Assumed exercise of stock options	717		914		740		928
Assumed performance units	176		323		297		442
Weighted average number of common shares outstanding – Diluted	84,498		71,924		84,485		72,614
Net income per common share – Diluted	$	1.80	$	0.88	$	4.01	$	1.74
Potentially dilutive securities excluded as anti-dilutive	18		13,356		36		13,729

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Debt (Tables)

6 Months Ended

Sep. 30, 2022

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt as of the periods presented consisted of the following:

	September 30, 2022		March 31, 2022
	(In thousands)
Term Loan Facility	$	430,750	$	434,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		—
Revolving Credit Facility	—		114,300
Equipment Financing	24,051		31,254
Total	1,304,801		929,804
Unamortized debt issuance costs	(12,825)		(1,648)
Current maturities	(16,765)		(19,451)
Long-term debt obligations	$	1,275,211	$	908,705

Summary of Carrying And Fair Value of Senior Notes

The following table presents the carrying and fair value of the Company’s 2027 Notes, 2030 Notes and Equipment Financing for the periods presented:

	September 30, 2022				March 31, 2022
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior Notes due 2027	$	320,555	$	350,000	$	349,902	$	350,000
Senior Notes due 2030	483,020		500,000		—		—
Equipment Financing	22,887		24,051		29,302		31,254
Total fair value	$	826,462	$	874,051	$	379,204	$	381,254

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Stock-Based Compensation (Tables)

6 Months Ended

Sep. 30, 2022

Share-Based Payment Arrangement [Abstract]

Summary of Stock-based Compensation Expense

The Company recognized stock-based compensation expense in the following line items of the Condensed Consolidated Statements of Operations for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Component of income before income taxes:
Cost of goods sold	$	758	$	685	$	1,432	$	1,319
Selling, general and administrative expenses	6,702		4,933		12,301		10,950
Total stock-based compensation expense	$	7,460	$	5,618	$	13,733	$	12,269

The following table summarizes stock-based compensation expense by award type for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Stock-based compensation expense:
Stock Options	$	1,002	$	860	$	2,281	$	1,613
Restricted Stock	1,965		1,520		3,726		2,879
Performance-based Restricted Stock Units	4,052		2,773		6,792		6,961
Non-Employee Directors	441		465		934		816
Total stock-based compensation expense	$	7,460	$	5,618	$	13,733	$	12,269

Summary of Assumption Used to Estimate Fair Value of Stock Options

The following table summarizes the assumptions used to estimate the fair value of stock-options during the period presented:

	Six Months Ended September 30, 2022
Common stock price	$99.29
Expected stock price volatility	41.1%
Risk-free interest rate	2.9%
Weighted-average expected option life (years)	6
Dividend yield	0.48%

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Business Segments Information (Tables)

6 Months Ended

Sep. 30, 2022

Segment Reporting [Abstract]

Schedule of Revenue from Reportable Segments by Product Type

The following table sets forth reportable segment information with respect to the amount of Net sales contributed by each class of similar products for the periods presented:

	Three Months Ended
	September 30, 2022						September 30, 2021
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	500,978	$	(10,770)	$	490,208	$	384,521	$	(2,668)	$	381,853
Infiltrator	150,735		(22,450)		128,285		145,911		(22,412)		123,499
International
International - Pipe	56,461		(7,339)		49,122		50,141		(5,170)		44,971
International - Allied Products & Other	17,002		—		17,002		13,433		—		13,433
Total International	73,463		(7,339)		66,124		63,574		(5,170)		58,404
Allied Products & Other	202,200		(2,608)		199,592		145,719		(3,004)		142,715
Intersegment Eliminations	(43,167)		43,167		—		(33,254)		33,254		—
Total Consolidated	$	884,209	$	—	$	884,209	$	706,471	$	—	$	706,471
	Six Months Ended
	September 30, 2022						September 30, 2021
	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	1,025,835	$	(20,644)	$	1,005,191	$	758,531	$	(4,571)	$	753,960
Infiltrator	317,025		(51,356)		265,669		272,653		(41,449)		231,204
International
International - Pipe	109,880		(13,198)		96,682		100,979		(8,084)		92,895
International - Allied Products & Other	35,097		—		35,097		27,961		—		27,961
Total International	144,977		(13,198)		131,779		128,940		(8,084)		120,856
Allied Products & Other	401,109		(5,353)		395,756		272,755		(3,004)		269,751
Intersegment Eliminations	(90,551)		90,551		—		(57,108)		57,108		—
Total Consolidated	$	1,798,395	$	—	$	1,798,395	$	1,375,771	$	—	$	1,375,771

Schedule of Financial Information Attributable to Reportable Segments

The following sets forth certain financial information attributable to the reportable segments for the periods presented:

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Segment Adjusted Gross Profit
Pipe	$	146,153	$	82,472	$	314,732	$	166,615
Infiltrator	71,278		58,847		147,072		118,249
International	17,630		15,077		38,114		36,455
Allied Products & Other	106,030		67,979		215,071		131,278
Intersegment Eliminations	430		1,479		(385)		1,465
Total	$	341,521	$	225,854	$	714,604	$	454,062
Depreciation and Amortization
Pipe	$	13,135	$	12,026	$	26,000	$	24,061
Infiltrator	5,027		3,375		9,894		6,811
International	1,283		1,290		2,654		2,748
Allied Products & Other(a)	16,477		17,503		32,952		35,230
Total	$	35,922	$	34,194	$	71,500	$	68,850
Capital Expenditures
Pipe	$	27,023	$	12,809	$	47,297	$	22,639
Infiltrator	8,514		22,134		21,046		35,160
International	1,114		1,264		2,027		1,514
Allied Products & Other(a)	2,705		2,011		5,175		4,451
Total	$	39,356	$	38,218	$	75,545	$	63,764

(a)Includes depreciation, amortization and capital expenditures not allocated to a reportable segment. The amortization expense of Infiltrator intangible assets acquired is included in Allied Products & Other.

Reconciliation of Gross Profit to Segment Adjusted Gross Profit

Reconciliation of Gross Profit to Segment Adjusted Gross Profit

	Three Months Ended September 30,				Six Months Ended September 30,
	2022		2021		2022		2021
	(In thousands)
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	319,963	$	200,057	$	672,070	$	401,178
Depreciation and Amortization	20,800		17,250		41,102		34,782
ESOP and stock-based compensation expense	758		8,547		1,432		18,102
Total Segment Adjusted Gross Profit	$	341,521	$	225,854	$	714,604	$	454,062

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Background and Summary of Significant Accounting Policies (Detail)	6 Months Ended
	Sep. 30, 2022 segment
Accounting Policies [Abstract]
Number of reportable segments	3

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Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands		6 Months Ended
	Apr. 29, 2022	Sep. 30, 2022	Mar. 31, 2022
Business Acquisition [Line Items]
Goodwill		$ 619,487	$ 610,293
Cultec
Business Acquisition [Line Items]
Total fair value of consideration transferred	$ 48,000
Goodwill	9,660	10,178
Transaction costs related to Acquisition		1,500
Intangible assets	$ 31,400	$ 31,400

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Acquisitions - Summary of Consideration Transferred and Preliminary Purchase Price Allocation of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	5 Months Ended
	Sep. 30, 2022	Apr. 29, 2022	Mar. 31, 2022
Business Acquisition [Line Items]
Goodwill	$ 619,487		$ 610,293
Cultec
Business Acquisition [Line Items]
Accounts receivable	5,957	$ 5,957
Inventory	4,469	4,469
Intangible assets	31,400	31,400
Goodwill	10,178	9,660
Property, plant and equipment	1,986	1,986
Accounts payable	(5,539)	(5,539)
Accrued expenses	(75)	(75)
Other liabilities	(366)	(366)
Goodwill, increase to purchase price	518
Total fair value of consideration transferred	48,010	$ 47,492
Total fair value of consideration transferred, increase to purchase price	$ 518

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Acquisitions - Summary of Identifiable Intangible Assets (Detail) - Cultec $ in Thousands	Apr. 29, 2022 USD ($)
Business Acquisition [Line Items]
Total identifiable intangible assets	$ 31,400
Customer relationships
Business Acquisition [Line Items]
Total identifiable intangible assets	12,400
Patents and developed technology
Business Acquisition [Line Items]
Total identifiable intangible assets	16,200
Tradename and trademarks
Business Acquisition [Line Items]
Total identifiable intangible assets	$ 2,800

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Revenue Recognition - Schedule of Contract Asset and Liability (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Contract asset - product returns	$ 1,105	$ 978
Refund liability	$ 3,487	$ 2,356

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Leases (Detail)	6 Months Ended
	Sep. 30, 2022
Minimum
Lessee Lease Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee Lease Description [Line Items]
Remaining lease term	28 years
Maximum | Yard
Lessee Lease Description [Line Items]
Lease renewal term	5 years

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Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Mar. 31, 2022
Inventory Disclosure [Abstract]
Raw materials	$ 146,757	$ 156,050
Finished goods	332,414	338,274
Total inventories	$ 479,171	$ 494,324

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Net Income Per Share and Stockholders' Equity - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Apr. 30, 2022	Feb. 28, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity Class Of Treasury Stock [Line Items]
Share repurchases (in shares)			1,100,000		1,900,000
Stock repurchased during period			$ 127,802	$ 176,622	$ 195,163	$ 292,000
Stock repurchase program, additional amount authorized		$ 1,000,000
Stock repurchase program, authorized amount			$ 804,800		$ 804,800
Common Stock in Treasury
Equity Class Of Treasury Stock [Line Items]
Share repurchases (in shares)			1,093,000	1,518,000	1,865,000	2,574,000
Stock repurchased during period			$ 127,802	$ 176,622	$ 195,163	$ 292,000
Employee Stock Ownership Plan E S O P Plan
Equity Class Of Treasury Stock [Line Items]
Conversion rate	0.7692
Employee Stock Ownership Plan E S O P Plan | Redeemable Convertible Preferred Stock
Equity Class Of Treasury Stock [Line Items]
Temporary equity, conversion of convertible securities (in shares)	(15,600,000)
Employee Stock Ownership Plan E S O P Plan | Redeemable Common Stock
Equity Class Of Treasury Stock [Line Items]
Temporary equity, conversion of convertible securities (in shares)	12,000,000

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Net Income Per Share and Stockholders' Equity - Summary of Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
NET INCOME PER SHARE—BASIC:
Net income attributable to ADS	$ 152,007	$ 75,359	$ 339,153	$ 151,346
Adjustments for:
Dividends to participating securities	0	(1,636)	0	(3,276)
Net income available to common stockholders and participating securities	152,007	73,723	339,153	148,070
Undistributed income allocated to participating securities	0	(10,494)	0	(21,430)
Net income available to common stockholders – Basic	$ 152,007	$ 63,229	$ 339,153	$ 126,640
Weighted average number of common shares outstanding – Basic (in shares)	83,466	70,464	83,306	70,993
Net income per common share - Basic (in dollars per share)	$ 1.82	$ 0.90	$ 4.07	$ 1.78
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$ 152,007	$ 63,229	$ 339,153	$ 126,640
Weighted average number of common shares outstanding – Basic (in shares)	83,466	70,464	83,306	70,993
Weighted average number of common shares outstanding – Diluted (in shares)	84,498	71,924	84,485	72,614
Net income per common share - Diluted (in dollars per share)	$ 1.80	$ 0.88	$ 4.01	$ 1.74
Potentially dilutive securities excluded as anti-dilutive (in shares)	18	13,356	36	13,729
Assumed restricted stock
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	139	223	142	251
Assumed exercise of stock options
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	717	914	740	928
Assumed performance units
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	176	323	297	442

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Related Party Transactions (Detail) - USD ($)	6 Months Ended
	Sep. 30, 2022	Jun. 06, 2022	Mar. 31, 2022
South American Joint Venture
Related Party Transaction [Line Items]
Maximum borrowings permitted under credit facility	$ 22,000,000
Company's ownership percentage	50.00%
Percentage of debt guarantee	50.00%
Maximum potential payment under guarantee	$ 11,000,000
Outstanding principal balance including letters of credit	8,300,000		$ 9,900,000
South American Joint Venture | US Dollar Denominated Loans
Related Party Transaction [Line Items]
Outstanding principal balance including letters of credit	$ 0
South American Joint Venture | Chilean Peso Denominated Loans
Related Party Transaction [Line Items]
Weighted average interest rate	12.00%
Consolidated Entity, Excluding Consolidated VIE
Related Party Transaction [Line Items]
Maximum borrowings permitted under credit facility		$ 9,500,000
Maximum borrowings permitted under credit facility	$ 0		$ 1,500,000
Consolidated Entity, Excluding Consolidated VIE | ADS Mexicana
Related Party Transaction [Line Items]
Company's ownership percentage	51.00%
Percentage of ownership in joint venture		49.00%

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Debt - Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Mar. 31, 2022
Debt Instrument [Line Items]
Long-term debt , gross	$ 1,304,801	$ 929,804
Unamortized debt issuance costs	(12,825)	(1,648)
Current maturities	(16,765)	(19,451)
Long-term debt obligations	1,275,211	908,705
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt , gross	0	114,300
Term Loan Facility
Debt Instrument [Line Items]
Long-term debt , gross	430,750	434,250
Senior Notes | Senior Notes due 2027
Debt Instrument [Line Items]
Long-term debt , gross	350,000	350,000
Senior Notes | Senior Notes due 2030
Debt Instrument [Line Items]
Long-term debt , gross	500,000	0
Equipment Financing
Debt Instrument [Line Items]
Long-term debt , gross	24,051	$ 31,254
Current maturities	(9,800)
Long-term debt obligations	$ 14,300

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Debt - Senior Secured Credit Facility (Detail) $ in Millions	1 Months Ended
	May 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2019 USD ($)
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowings permitted under credit facility	$ 600.0			$ 350.0
Leverage ratio, maximum for variable rate step-down	2.00
Outstanding letters of credit		$ 11.7	$ 9.2
Revolving Credit Facility | Term Benchmark Based Loans Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Letter of Credit Facility
Debt Instrument [Line Items]
Maximum borrowings permitted under credit facility				50.0
Sublimit of Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowings permitted under credit facility	$ 60.0			50.0
Term Loan Facility
Debt Instrument [Line Items]
Aggregate principal amount				$ 700.0

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Debt - Senior Notes (Detail) - USD ($) $ in Millions	Jun. 09, 2022	Sep. 23, 2019
Senior Notes due 2027
Debt Instrument [Line Items]
Aggregate principal amount		$ 350.0
Debt instrument, interest rate		5.00%
Senior Notes due 2030
Debt Instrument [Line Items]
Aggregate principal amount	$ 500.0
Debt instrument, interest rate	6.375%
Deferred financing costs	$ 9.0
Senior Notes due 2030 | Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt instrument redemption price, percentage of principal amount redeemed, excluding make whole premium	100.00%
Debt instrument, redemption price, percentage of principal amount redeemed	106.375%
Senior Notes due 2030 | Debt Instrument, Redemption, Period One | Maximum
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	40.00%

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Debt - Equipment Financing (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2022	Mar. 31, 2022
Debt Instrument [Line Items]
Current maturities of debt obligations	$ 16,765	$ 19,451
Long-term debt obligations	$ 1,275,211	$ 908,705
Equipment Financing
Debt Instrument [Line Items]
Weighted average interest rate of equipment financing	1.40%
Current maturities of debt obligations	$ 9,800
Long-term debt obligations	$ 14,300
Minimum | Equipment Financing
Debt Instrument [Line Items]
Equipment financing term	12 months
Maximum | Equipment Financing
Debt Instrument [Line Items]
Equipment financing term	84 months

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Debt - Valuation of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Mar. 31, 2022
Fair Value
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	$ 826,462	$ 379,204
Fair Value | Equipment Financing
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	22,887	29,302
Carrying Value
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	874,051	381,254
Carrying Value | Equipment Financing
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	24,051	31,254
Senior Notes due 2027 | Fair Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	320,555	349,902
Senior Notes due 2027 | Carrying Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	350,000	350,000
Senior Notes due 2030 | Fair Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	483,020	0
Senior Notes due 2030 | Carrying Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	$ 500,000	$ 0

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Commitments and Contingencies (Detail) - Inventory	6 Months Ended
	Sep. 30, 2022 USD ($)
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Total purchase commitment	$ 0
Minimum
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Purchase commitment contract period	1 month
Maximum
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Purchase commitment contract period	12 months

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Income Taxes (Detail)	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate	23.90%	26.10%	23.20%	25.80%

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Stock-Based Compensation - Summary of Stock-based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	$ 7,460	$ 5,618	$ 13,733	$ 12,269
Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	441	465	934	816
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	1,002	860	2,281	1,613
Assumed performance units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	1,965	1,520	3,726	2,879
Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	4,052	2,773	6,792	6,961
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	758	685	1,432	1,319
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	$ 6,702	$ 4,933	$ 12,301	$ 10,950

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Stock-Based Compensation (2017 Omnibus Plan) - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	May 24, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock awards	$ (34)	$ 0	$ (2,491)	$ (3,230)
2017 Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock awards (in shares)	100,000		100,000
Restricted stock awards	$ 3,300		$ 11,800
2017 Omnibus Plan | Performance-based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of performance units granted (in shares)			100,000
Number of performance units granted, value			$ 6,600
2017 Omnibus Plan | Assumed exercise of stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options granted (in shares)			100,000
Number of stock options granted, value			$ 5,500
2017 Omnibus Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock approved for issuance (in shares)					5,000,000

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Stock-Based Compensation - Summary of Assumption Used to Estimate Fair Value of Stock Options (Detail)	6 Months Ended
	Sep. 30, 2022 $ / shares
Share-Based Payment Arrangement [Abstract]
Common stock price (in dollars per share)	$ 99.29
Expected stock price volatility	41.10%
Risk-free interest rate	2.90%
Weighted-average expected option life (years)	6 years
Dividend yield	0.48%

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Business Segments Information - Additional Information (Detail)	6 Months Ended
	Sep. 30, 2022 segment
Segment Reporting [Abstract]
Number of reportable segments	3

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Business Segments Information - Schedule of Revenue from Reportable Segments by Product Type (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Net Sales	$ 884,209	$ 706,471	$ 1,798,395	$ 1,375,771
Operating Segments
Segment Reporting Information [Line Items]
Net Sales	(43,167)	(33,254)	(90,551)	(57,108)
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	43,167	33,254	90,551	57,108
Pipe
Segment Reporting Information [Line Items]
Net Sales	490,208	381,853	1,005,191	753,960
Pipe | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	500,978	384,521	1,025,835	758,531
Pipe | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(10,770)	(2,668)	(20,644)	(4,571)
Infiltrator
Segment Reporting Information [Line Items]
Net Sales	128,285	123,499	265,669	231,204
Infiltrator | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	150,735	145,911	317,025	272,653
Infiltrator | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(22,450)	(22,412)	(51,356)	(41,449)
International
Segment Reporting Information [Line Items]
Net Sales	66,124	58,404	131,779	120,856
International | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	73,463	63,574	144,977	128,940
International | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(7,339)	(5,170)	(13,198)	(8,084)
International | International - Pipe
Segment Reporting Information [Line Items]
Net Sales	49,122	44,971	96,682	92,895
International | International - Pipe | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	56,461	50,141	109,880	100,979
International | International - Pipe | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(7,339)	(5,170)	(13,198)	(8,084)
International | International - Allied Products & Other
Segment Reporting Information [Line Items]
Net Sales	17,002	13,433	35,097	27,961
International | International - Allied Products & Other | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	17,002	13,433	35,097	27,961
Allied Products & Other
Segment Reporting Information [Line Items]
Net Sales	199,592	142,715	395,756	269,751
Allied Products & Other | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	202,200	145,719	401,109	272,755
Allied Products & Other | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	$ (2,608)	$ (3,004)	$ (5,353)	$ (3,004)

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Business Segments Information - Schedule of Financial Information Attributable to Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	$ 341,521	$ 225,854	$ 714,604	$ 454,062
Depreciation and Amortization	35,922	34,194	71,500	68,850
Capital Expenditures	39,356	38,218	75,545	63,764
Net sales	884,209	706,471	1,798,395	1,375,771
Pipe
Segment Reporting Information [Line Items]
Net sales	490,208	381,853	1,005,191	753,960
Infiltrator
Segment Reporting Information [Line Items]
Net sales	128,285	123,499	265,669	231,204
International
Segment Reporting Information [Line Items]
Net sales	66,124	58,404	131,779	120,856
International | International - Pipe
Segment Reporting Information [Line Items]
Net sales	49,122	44,971	96,682	92,895
International | International - Allied Products & Other
Segment Reporting Information [Line Items]
Net sales	17,002	13,433	35,097	27,961
Allied Products & Other
Segment Reporting Information [Line Items]
Net sales	199,592	142,715	395,756	269,751
Operating Segments
Segment Reporting Information [Line Items]
Net sales	(43,167)	(33,254)	(90,551)	(57,108)
Operating Segments | Pipe
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	146,153	82,472	314,732	166,615
Depreciation and Amortization	13,135	12,026	26,000	24,061
Capital Expenditures	27,023	12,809	47,297	22,639
Net sales	500,978	384,521	1,025,835	758,531
Operating Segments | Infiltrator
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	71,278	58,847	147,072	118,249
Depreciation and Amortization	5,027	3,375	9,894	6,811
Capital Expenditures	8,514	22,134	21,046	35,160
Net sales	150,735	145,911	317,025	272,653
Operating Segments | International
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	17,630	15,077	38,114	36,455
Depreciation and Amortization	1,283	1,290	2,654	2,748
Capital Expenditures	1,114	1,264	2,027	1,514
Net sales	73,463	63,574	144,977	128,940
Operating Segments | International | International - Pipe
Segment Reporting Information [Line Items]
Net sales	56,461	50,141	109,880	100,979
Operating Segments | International | International - Allied Products & Other
Segment Reporting Information [Line Items]
Net sales	17,002	13,433	35,097	27,961
Operating Segments | Allied Products & Other
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	106,030	67,979	215,071	131,278
Depreciation and Amortization	16,477	17,503	32,952	35,230
Capital Expenditures	2,705	2,011	5,175	4,451
Net sales	202,200	145,719	401,109	272,755
Intersegment Eliminations
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	430	1,479	(385)	1,465
Net sales	43,167	33,254	90,551	57,108
Intersegment Eliminations | Pipe
Segment Reporting Information [Line Items]
Net sales	(10,770)	(2,668)	(20,644)	(4,571)
Intersegment Eliminations | Infiltrator
Segment Reporting Information [Line Items]
Net sales	(22,450)	(22,412)	(51,356)	(41,449)
Intersegment Eliminations | International
Segment Reporting Information [Line Items]
Net sales	(7,339)	(5,170)	(13,198)	(8,084)
Intersegment Eliminations | International | International - Pipe
Segment Reporting Information [Line Items]
Net sales	(7,339)	(5,170)	(13,198)	(8,084)
Intersegment Eliminations | Allied Products & Other
Segment Reporting Information [Line Items]
Net sales	$ (2,608)	$ (3,004)	$ (5,353)	$ (3,004)

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Business Segments Information - Reconciliation of Gross Profit to Segment Adjusted Gross Profit (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross profit	$ 319,963	$ 200,057	$ 672,070	$ 401,178
Total Segment Adjusted Gross Profit	341,521	225,854	714,604	454,062
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and Amortization	20,800	17,250	41,102	34,782
ESOP and stock-based compensation expense	$ 758	$ 8,547	$ 1,432	$ 18,102

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Subsequent Events (Detail) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 03, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Subsequent Event [Line Items]
Common stock dividends per share (in dollars per share)		$ 0.12	$ 0.11	$ 0.24	$ 0.22
Share repurchases (in shares)		1.1		1.9
Stock repurchased during period		$ 127,802	$ 176,622	$ 195,163	$ 292,000
Subsequent Event
Subsequent Event [Line Items]
Common stock dividends per share (in dollars per share)	$ 0.12
Share repurchases (in shares)	0.3
Stock repurchased during period	$ 31,400