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 December 31, 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 January 26, 2023, the registrant had 81,233,409 shares of common stock outstanding, which excludes 183,617 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 December 31, 2022 and March 31, 2022	3
	Condensed Consolidated Statements of Operations for the three and nine months ended December 31, 2022 and 2021	4
	Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended December 31, 2022 and 2021	5
	Condensed Consolidated Statements of Cash Flows for the nine months ended December 31, 2022 and 2021	6
	Condensed Consolidated Statements of Stockholders’ Equity and Mezzanine Equity for the three and nine months ended December 31, 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	30
Item 1A.	Risk Factors	30
Item 2.	Unregistered Sale of Equity Securities and Use of Proceeds	30
Item 3.	Defaults Upon Senior Securities	30
Item 4.	Mine Safety Disclosures	30
Item 5.	Other Information	30
Item 6.	Exhibits	31
Signatures		32

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PART I. FINANCIAL INFORMATION

ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited) (In thousands, except par value)

	December 31, 2022		March 31, 2022
ASSETS
Current assets:
Cash	$	426,690	$	20,125
Receivables (less allowance for doubtful accounts of $9,311 and $8,198, respectively)	242,485		341,753
Inventories	459,029		494,324
Other current assets	29,162		15,696
Total current assets	1,157,366		871,898
Property, plant and equipment, net	685,496		619,383
Other assets:
Goodwill	619,275		610,293
Intangible assets, net	421,450		431,385
Other assets	122,071		116,799
Total assets	$	3,005,658	$	2,649,758
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current maturities of debt obligations	$	15,601	$	19,451
Current maturities of finance lease obligations	6,556		5,089
Accounts payable	174,106		224,986
Other accrued liabilities	170,549		134,877
Accrued income taxes	3,468		6,838
Total current liabilities	370,280		391,241
Long-term debt obligations (less unamortized debt issuance costs of $12,314 and $1,648, respectively)	1,272,040		908,705
Long-term finance lease obligations	14,571		11,393
Deferred tax liabilities	163,259		168,435
Other liabilities	69,767		64,939
Total liabilities	1,889,917		1,544,713
Commitments and contingencies (see Note 9)
Mezzanine equity:
Redeemable common stock: $0.01 par value; 9,669 and 0 shares outstanding, respectively	157,128		—
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	157,128		195,384
Stockholders’ equity:
Common stock; $0.01 par value: 1,000,000 shares authorized; 78,785 and 75,529  shares issued, respectively; 71,545 and 72,309 shares outstanding, respectively	11,645		11,612
Paid-in capital	1,128,915		1,065,628
Common stock in treasury, at cost	(719,702)		(318,691)
Accumulated other comprehensive loss	(29,871)		(24,386)
Retained earnings	550,011		158,876
Total ADS stockholders’ equity	940,998		893,039
Noncontrolling interest in subsidiaries	17,615		16,622
Total stockholders’ equity	958,613		909,661
Total liabilities, mezzanine equity and stockholders’ equity	$	3,005,658	$	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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
Net sales	$	655,167	$	715,357	$	2,453,562	$	2,091,128
Cost of goods sold	431,250		506,380		1,557,575		1,480,973
Gross profit	223,917		208,977		895,987		610,155
Operating expenses:
Selling, general and administrative	85,936		80,059		261,095		230,231
(Gain) loss on disposal of assets and costs from exit and disposal activities	(348)		3,466		(147)		2,554
Intangible amortization	13,842		15,138		41,360		46,229
Income from operations	124,487		110,314		593,679		331,141
Other expense:
Interest expense	20,001		8,756		49,334		25,100
Derivative gains and other income, net	(4,125)		(979)		(5,632)		(2,791)
Income before income taxes	108,611		102,537		549,977		308,832
Income tax expense	26,068		28,792		128,641		82,063
Equity in net income of unconsolidated affiliates	(639)		(717)		(3,705)		(1,128)
Net income	83,182		74,462		425,041		227,897
Less: net income attributable to noncontrolling interest	1,142		784		3,848		2,873
Net income attributable to ADS	82,040		73,678		421,193		225,024
Weighted average common shares outstanding:
Basic	82,067		71,267		82,891		71,087
Diluted	82,987		72,789		83,980		72,752
Net income per share:
Basic	$	1.00	$	0.88	$	5.08	$	2.67
Diluted	$	0.99	$	0.86	$	5.02	$	2.61

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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
Net income	$	83,182	$	74,462	$	425,041	$	227,897
Currency translation gain (loss)	4,973		(860)		(4,688)		(2,225)
Comprehensive income	88,155		73,602		420,353		225,672
Less: other comprehensive income (loss) attributable to noncontrolling interest	1,069		(199)		797		236
Less: net income attributable to noncontrolling interest	1,142		784		3,848		2,873
Total comprehensive income attributable to ADS	$	85,944	$	73,017	$	415,708	$	222,563

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)

	Nine Months Ended December 31,
	2022		2021
Cash Flows from Operating Activities
Net income	$	425,041	$	227,897
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	107,346		103,687
Deferred income taxes	(4,165)		6,243
(Gain) loss on disposal of assets and costs from exit and disposal activities	(147)		2,554
ESOP and stock-based compensation	19,912		61,900
Amortization of deferred financing charges	909		286
Fair market value adjustments to derivatives	2,309		118
Equity in net income of unconsolidated affiliates	(3,705)		(1,128)
Other operating activities	2,732		(9,898)
Changes in working capital:
Receivables	99,958		(59,821)
Inventories	34,871		(161,878)
Prepaid expenses and other current assets	(4,532)		(5,199)
Accounts payable, accrued expenses, and other liabilities	(20,091)		29,086
Net cash provided by operating activities	660,438		193,847
Cash Flows from Investing Activities
Capital expenditures	(126,858)		(100,367)
Acquisition, net of cash acquired	(48,010)		(49,210)
Other investing activities	46		(463)
Net cash used in investing activities	(174,822)		(150,040)
Cash Flows from Financing Activities
Payments on syndicated Term Loan Facility	(5,250)		(5,250)
Proceeds from Revolving Credit Agreement	26,200		258,100
Payments on Revolving Credit Agreement	(140,500)		(124,600)
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)		—
Proceeds from Equipment Financing	—		35,963
Payments on Equipment Financing	(10,213)		(1,177)
Payments on finance lease obligations	(4,954)		(49,365)
Repurchase of common stock	(375,027)		(292,000)
Cash dividends paid	(30,111)		(27,826)
Dividends paid to noncontrolling interest holder	(3,652)		(1,471)
Proceeds from exercise of stock options	5,145		4,274
Payment of withholding taxes on vesting of restricted stock units	(28,653)		(13,055)
Other financing activities	—		(167)
Net cash used in financing activities	(78,590)		(216,574)
Effect of exchange rate changes on cash	(461)		(69)
Net change in cash	406,565		(172,836)
Cash at beginning of period	20,125		195,009
Cash at end of period	$	426,690	$	22,173
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	$	136,320	$	81,028
Cash paid for interest	24,757		20,080
Non-cash operating, investing and financing activities:
Acquisition of property, plant and equipment under finance lease and incurred lease obligations	10,684		16,258
Balance in accounts payable for the acquisition of property, plant and equipment	14,748		16,313

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 October 1, 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
Net income	—	—		—		—	—		—		73,678		73,678		784		74,462		—	—		—	—		—
Other comprehensive loss	—	—		—		—	—		(661)		—		(661)		(199)		(860)		—	—		—	—		—
Redeemable convertible preferred stock dividends	—	—		—		—	—		—		(1,267)		(1,267)		—		(1,267)		—	—		—	—		—
Common stock dividends ($0.11 per share)	—	—		—		—	—		—		(7,879)		(7,879)		—		(7,879)		—	—		—	—		—
Allocation of ESOP shares to participants for compensation	—	—		15,353		—	—		—		—		15,353		—		15,353		—	—		(149)	1,868		1,868
Exercise of common stock options	71	1		1,094		—	—		—		—		1,095		—		1,095		—	—		—	—		—
Restricted stock awards	2	—		—		1	(114)		—		—		(114)		—		(114)		—	—		—	—		—
Stock-based compensation expense	—	—		6,242		—	—		—		—		6,242		—		6,242		—	—		—	—		—
ESOP distribution in common stock	1,086	10		17,634		—	—		—		—		17,644		—		17,644		(1,411)	(17,644)		—	—		(17,644)
Other	—	—		89		—	—		—		—		89		—		89		—	—		—	—		—
Balance at December 31, 2021	74,492	$	11,601	$	1,008,610	3,197	$	(316,049)	$	(26,681)	$	121,918	$	799,399	$	15,369	$	814,768	16,871	$	210,888	495	$	(5,146)	$	205,742
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	—	—		—		—	—		—		225,024		225,024		2,873		227,897		—	—		—	—		—
Other comprehensive (loss) income	—	—		—		—	—		(2,461)		—		(2,461)		236		(2,225)		—	—		—	—		—
Redeemable convertible preferred stock dividends	—	—		—		—	—		—		(4,364)		(4,364)		—		(4,364)		—	—		—	—		—
Common stock dividends ($0.33 per share)	—	—		—		—	—		—		(23,540)		(23,540)		—		(23,540)		—	—		—	—		—
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	—	—		37,502		—	—		—		—		37,502		—		37,502		—	—		(471)	5,887		5,887
Exercise of common stock options	195	2		4,273		—	—		—		—		4,275		—		4,275		—	—		—	—		—
Restricted stock awards	131	1		—		30	(3,345)		—		—		(3,344)		—		(3,344)		—	—		—	—		—
Performance-based restricted stock units	245	2		—		92	(9,745)		—		—		(9,743)		—		(9,743)
Stock-based compensation expense	—	—		18,511		—	—		—		—		18,511		—		18,511		—	—		—	—		—
ESOP distribution in common stock	1,850	18		30,038		—	—		—		—		30,056		—		30,056		(2,404)	(30,056)		—	—		(30,056)
Other	—	—		(301)		—	—		—		—		(301)		—		(301)		—	—		—	—		—
Balance at December 31, 2021	74,492	$	11,601	$	1,008,610	3,197	$	(316,049)	$	(26,681)	$	121,918	$	799,399	$	15,369	$	814,768	16,871	$	210,888	495	$	(5,146)	$	205,742

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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 October 1, 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
Net income	—	—		—		—	—		—		82,040		82,040		1,142		83,182		—	—		—	—		—
Other comprehensive income	—	—		—		—	—		3,904		—		3,904		1,069		4,973		—	—		—	—		—
Common stock dividends ($0.12 per share)	—	—		—		—	—		—		(9,819)		(9,819)		—		(9,819)		—	—		—	—		—
Share repurchases	—	—		—		1,891	(179,864)		—		—		(179,864)		—		(179,864)		—	—		—	—		—
Dividends paid to noncontrolling interest holder	—	—		—		—	—		—		—		—		(1,925)		(1,925)		—	—		—	—		—
KSOP redeemable common stock conversion	171	2		2,798		—	—		—		—		2,800		—		2,800		(171)	(2,800)		—	—		(2,800)
Exercise of common stock options	17	—		485		—	—		—		—		485		—		485		—	—		—	—		—
Restricted stock awards	78	1		—		35	(3,141)		—		—		(3,140)		—		(3,140)		—	—		—	—		—
Stock-based compensation expense	—	—		6,179		—	—		—		—		6,179		—		6,179		—	—		—	—		—
Balance at December 31, 2022	78,785	$	11,645	$	1,128,915	7,240	$	(719,702)	$	(29,871)	$	550,011	$	940,998	$	17,615	$	958,613	9,669	$	157,128	—	$	—	$	157,128
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	—	—		—		—	—		—		421,193		421,193		3,848		425,041		—	—		—	—		—
Other comprehensive (loss) income	—	—		—		—	—		(5,485)		—		(5,485)		797		(4,688)		—	—		—	—		—
Common stock dividends ($0.36 per share)	—	—		—		—	—		—		(30,058)		(30,058)		—		(30,058)		—	—		—	—		—
Dividends paid to noncontrolling interest holder	—	—		—		—	—		—		—		—		(3,652)		(3,652)		—	—		—	—		—
Share repurchases	—	—		—		3,756	(375,027)		—		—		(375,027)		—		(375,027)		—	—		—	—		—
ESOP share conversion	—	—		—		—	—		—		—		—		—		—		12,022	195,384		(15,630)	(195,384)		—
KSOP redeemable common stock conversion	2,353	24		38,232		—	—		—		—		38,256		—		38,256		(2,353)	(38,256)		—	—		(38,256)
Exercise of common stock options	200	2		5,143		—	—		—		—		5,145		—		5,145		—	—		—	—		—
Restricted stock awards	176	2		—		59	(5,633)		—		—		(5,631)		—		(5,631)		—	—		—	—		—
Performance-based restricted stock units	527	5		—		205	(20,351)		—		—		(20,346)		—		(20,346)		—	—		—	—		—
Stock-based compensation expense	—	—		19,912		—	—		—		—		19,912		—		19,912		—	—		—	—		—
Balance at December 31, 2022	78,785	$	11,645	$	1,128,915	7,240	$	(719,702)	$	(29,871)	$	550,011	$	940,998	$	17,615	$	958,613	9,669	$	157,128	—	$	—	$	157,128

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 December 31, 2022 and the results of operations for the three and nine months ended December 31, 2022 and cash flows for the nine months ended December 31, 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 nine months ended December 31, 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:

	December 31, 2022		March 31, 2022
	(In thousands)
Contract asset - product returns	$	901	$	978
Refund liability	2,646		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:

	December 31, 2022		March 31, 2022
	(In thousands)
Raw materials	$	123,722	$	156,050
Finished goods	335,307		338,274
Total inventories	$	459,029	$	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 nine months ended December 31, 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 nine months ended December 31, 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 December 31,				Nine Months Ended December 31,
(In thousands, except per share data)	2022		2021		2022		2021
NET INCOME PER SHARE—BASIC:
Net income attributable to ADS	$	82,040	$	73,678	$	421,193	$	225,024
Adjustments for:
Dividends to participating securities	—		(1,357)		—		(4,633)
Net income available to common stockholders and participating securities	82,040		72,321		421,193		220,391
Undistributed income allocated to participating securities	—		(9,457)		—		(30,870)
Net income available to common stockholders – Basic	$	82,040	$	62,864	$	421,193	$	189,521
Weighted average number of common shares outstanding – Basic	82,067		71,267		82,891		71,087
Net income per common share – Basic	$	1.00	$	0.88	$	5.08	$	2.67
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	82,040	$	62,864	$	421,193	$	189,521
Weighted average number of common shares outstanding – Basic	82,067		71,267		82,891		71,087
Assumed restricted stock	114		236		131		245
Assumed exercise of stock options	626		854		702		904
Assumed performance units	180		432		256		516
Weighted average number of common shares outstanding – Diluted	82,987		72,789		83,980		72,752
Net income per common share – Diluted	$	0.99	$	0.86	$	5.02	$	2.61
Potentially dilutive securities excluded as anti-dilutive	42		12,271		45		13,240

Stockholders’ Equity – During the three and nine months ended December 31, 2022, the Company repurchased 1.9 million and 3.8 million shares, respectively, of common stock at a cost of $179.9 million and $375.0 million, respectively.

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 December 31, 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 December 31, 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 December 31, 2022 and March 31, 2022, the outstanding principal balances of the credit facility including letters of credit were $6.3 million and $9.9 million, respectively. As of December 31, 2022, there were no U.S. dollar denominated loans. The weighted average interest rate as of December 31, 2022 was 11.5% on Chilean peso denominated loans.

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8.DEBT

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

	December 31, 2022		March 31, 2022
	(In thousands)
Term Loan Facility	$	429,000	$	434,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		—
Revolving Credit Facility	—		114,300
Equipment Financing	20,955		31,254
Total	1,299,955		929,804
Unamortized debt issuance costs	(12,314)		(1,648)
Current maturities	(15,601)		(19,451)
Long-term debt obligations	$	1,272,040	$	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 December 31, 2022 and March 31, 2022 amounted to $9.7 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.

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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 had an initial term of between 12 and 84 months, based on the life of the equipment, and bears a weighted average interest of 1.5% as of December 31, 2022. The current portion of the equipment financing is $8.6 million, and the long-term portion is $12.3 million at December 31, 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:

	December 31, 2022				March 31, 2022
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior Notes due 2027	$	328,577	$	350,000	$	349,902	$	350,000
Senior Notes due 2030	486,570		500,000		—		—
Equipment Financing	19,981		20,955		29,302		31,254
Total fair value	$	835,128	$	870,955	$	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 price and quantity as of December 31, 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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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 December 31, 2022 and 2021, the Company utilized an effective tax rate of 24.0% and 28.1%, respectively, to calculate its provision for income taxes. For the nine months ended December 31, 2022 and 2021, the Company utilized an effective tax rate of 23.4% and 26.6%, respectively, to calculate its provision for income taxes. State and local income taxes increased the effective rate for the three and nine months ended December 31, 2022 and 2021. The Company’s ESOP also increased the effective rate for three and nine months ended December 31, 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 months ended December 31, 2022 and nine months ended December 31, 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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Component of income before income taxes:
Cost of goods sold	$	743	$	700	$	2,175	$	2,019
Selling, general and administrative expenses	5,436		5,542		17,737		16,492
Total stock-based compensation expense	$	6,179	$	6,242	$	19,912	$	18,511

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

	Three Months Ended December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Stock-based compensation expense:
Stock Options	$	1,035	$	793	$	3,316	$	2,406
Restricted Stock	1,754		1,480		5,480		4,359
Performance-based Restricted Stock Units	2,827		3,471		9,619		10,432
Non-Employee Directors	563		498		1,497		1,314
Total stock-based compensation expense	$	6,179	$	6,242	$	19,912	$	18,511

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 nine months ended December 31, 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 $0.1 million and $11.9 million, respectively.

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Performance-based Restricted Stock Units ("Performance Units") – During the nine months ended December 31, 2022, the Company granted 0.1 million performance share units at a grant date fair value of $6.6 million.

Options – During the nine months ended December 31, 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:

	Nine Months Ended December 31, 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 operating segments within the Allied Products & Other businesses segment disclosure exceeds the quantitative thresholds for separate segment reporting.

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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
	December 31, 2022						December 31, 2021
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	375,719	$	(10,839)	$	364,880	$	400,027	$	(3,332)	$	396,695
Infiltrator	103,895		(14,961)		88,934		148,677		(26,314)		122,363
International
International - Pipe	44,882		(5,311)		39,571		41,156		(5,700)		35,456
International - Allied Products & Other	14,075		—		14,075		14,687		—		14,687
Total International	58,957		(5,311)		53,646		55,843		(5,700)		50,143
Allied Products & Other	149,044		(1,337)		147,707		147,476		(1,320)		146,156
Intersegment Eliminations	(32,448)		32,448		—		(36,666)		36,666		—
Total Consolidated	$	655,167	$	—	$	655,167	$	715,357	$	—	$	715,357
	Nine Months Ended
	December 31, 2022						December 31, 2021
	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	1,401,554	$	(31,483)	$	1,370,071	$	1,158,558	$	(7,903)	$	1,150,655
Infiltrator	420,920		(66,317)		354,603		421,330		(67,763)		353,567
International
International - Pipe	154,762		(18,509)		136,253		142,135		(13,784)		128,351
International - Allied Products & Other	49,172		—		49,172		42,648		—		42,648
Total International	203,934		(18,509)		185,425		184,783		(13,784)		170,999
Allied Products & Other	550,153		(6,690)		543,463		420,231		(4,324)		415,907
Intersegment Eliminations	(122,999)		122,999		—		(93,774)		93,774		—
Total Consolidated	$	2,453,562	$	—	$	2,453,562	$	2,091,128	$	—	$	2,091,128

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

	Three Months Ended December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Segment Adjusted Gross Profit
Pipe	$	106,279	$	92,066	$	421,011	$	258,681
Infiltrator	46,497		60,546		193,569		178,795
International	13,342		13,240		51,456		49,695
Allied Products & Other	78,401		72,785		293,472		204,063
Intersegment Eliminations	714		(44)		329		1,421
Total	$	245,233	$	238,593	$	959,837	$	692,655
Depreciation and Amortization
Pipe	$	12,754	$	12,534	$	38,754	$	36,595
Infiltrator	5,120		3,551		15,014		10,362
International	1,369		1,403		4,023		4,151
Allied Products & Other(a)	16,603		17,349		49,555		52,579
Total	$	35,846	$	34,837	$	107,346	$	103,687
Capital Expenditures
Pipe	$	28,268	$	18,657	$	75,565	$	41,296
Infiltrator	12,810		15,614		33,856		50,774
International	2,366		735		4,393		2,249
Allied Products & Other(a)	7,869		1,597		13,044		6,048
Total	$	51,313	$	36,603	$	126,858	$	100,367

(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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	223,917	$	208,977	$	895,987	$	610,155
Depreciation and Amortization	20,573		18,042		61,675		52,824
ESOP and stock-based compensation expense	743		11,574		2,175		29,676
Total Segment Adjusted Gross Profit	$	245,233	$	238,593	$	959,837	$	692,655

13.SUBSEQUENT EVENTS

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

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

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.”

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

Third Quarter Fiscal 2023 Results

•Net sales decreased 8.4% to $655.2 million

•Net income increased 11.7% to $83.2 million

•Adjusted EBITDA, a non-GAAP measure, decreased 3.6% to $169.7 million

Net sales decreased $60.2 million, or 8.4%, to $655.2 million, as compared to $715.4 million in the prior year quarter. Domestic pipe sales decreased $24.3 million, or 6.1%, to $375.7 million. Domestic allied products & other sales increased $1.6 million, or 1.1%, to $149.0 million. Infiltrator sales decreased $44.8 million, or 30.1%, to $103.9 million. The decrease in domestic net sales was driven by sales in the U.S. construction end markets. International sales increased $3.1 million, or 5.6%, to $59.0 million, driven by growth in the Canadian and Mexican businesses.

Gross profit increased $14.9 million, or 7.1%, to $223.9 million as compared to $209.0 million in the prior year. The increase in gross profit is primarily due to the favorable pricing on pipe, onsite septic and allied products as well as favorable material cost. This increase was partially offset by a decrease in volume, inflationary cost pressures and higher manufacturing costs.

Adjusted EBITDA, a non-GAAP measure, decreased $6.4 million, or 3.6%, to $169.7 million, as compared to $176.2 million in the prior year. The decrease is primarily due to the factors mentioned above, as well as an increase in selling, general and administrative expenses. As a percentage of Net sales, Adjusted EBITDA was 25.9% as compared to 24.6% in the prior year.

Year-to-date Fiscal 2023 Results

•Net sales increased 17.3% to $2,453.6 million

•Net income increased 86.5% to $425.0 million

•Adjusted EBITDA, a non-GAAP measure, increased 44.2% to $732.0 million

Net sales increased $362.4 million, or 17.3%, to $2,453.6 million, as compared to $2,091.1 million in the prior year quarter. Domestic pipe sales increased $243.0 million, or 21.0%, to $1,401.6 million. Domestic allied products & other sales increased $129.9 million, or 30.9%, to $550.2 million. Infiltrator sales decreased $0.4 million, or 0.1%, to $420.9 million. The increase in domestic net sales was driven by double-digit sales growth in the U.S. construction end markets.

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International sales increased $19.2 million, or 10.4%, to $203.9 million, driven by strong sales growth in the Canadian, Mexican and Exports businesses.

Gross profit increased $285.8 million, or 46.8%, to $896.0 million as compared to $610.2 million in the prior year. The increase in gross profit is primarily due to the favorable pricing on pipe, onsite septic and allied products as well as favorable material cost. This increase was partially offset by a decrease in volume, inflationary cost pressures and higher manufacturing costs.

Adjusted EBITDA, a non-GAAP measure, increased $224.4 million, or 44.2%, to $732.0 million, as compared to $507.5 million in the prior year. The increase is primarily due to the factors mentioned above. As a percentage of Net sales, Adjusted EBITDA was 29.8% as compared to 24.3% in the prior year.

Results of Operations

Comparison of the Three Months Ended December 31, 2022 to the Three Months Ended December 31, 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 December 31,
	2022				2021
Consolidated Statements of Operations data:	(In thousands)
Net sales	$	655,167	100.0	%	$	715,357	100.0	%
Cost of goods sold	431,250		65.8		506,380		70.8
Gross profit	223,917		34.2		208,977		29.2
Selling, general and administrative	85,936		13.1		80,059		11.2
(Gain) loss on disposal of assets and costs from exit and disposal activities	(348)		(0.1)		3,466		0.5
Intangible amortization	13,842		2.1		15,138		2.1
Income from operations	124,487		19.0		110,314		15.4
Interest expense	20,001		3.1		8,756		1.2
Derivative gains and other income, net	(4,125)		(0.6)		(979)		(0.1)
Income before income taxes	108,611		16.6		102,537		14.3
Income tax expense	26,068		4.0		28,792		4.0
Equity in net income of unconsolidated affiliates	(639)		(0.1)		(717)		(0.1)
Net income	83,182		12.7		74,462		10.4
Less: net income attributable to noncontrolling interest	1,142		0.2		784		0.1
Net income attributable to ADS	$	82,040	12.5	%	$	73,678	10.3	%

Net sales - The following table presents Net sales to external customers by reportable segment for the three months ended December 31, 2022 and 2021.

(Amounts in thousands)	2022		2021		$ Variance		% Variance
Pipe	$	364,880	$	396,695	$	(31,815)	(8.0)	%
Infiltrator	88,934		122,363		(33,429)		(27.3)
International	53,646		50,143		3,503		7.0
Allied Products & Other	147,707		146,156		1,551		1.1
Total Consolidated	$	655,167	$	715,357	$	(60,190)	(8.4)	%

Our consolidated Net sales for the three months ended December 31, 2022 decreased by $60.2 million, or 8.4%, compared to the same period in fiscal 2022. The decrease in Net sales was primarily a result of decreases in our Infiltrator segment and in our domestic Pipe segment.

Our Pipe and Infiltrator segments experienced decreased sales primarily due to lower volume offset by improved pricing/mix of products sold. The increase in our International segment was driven by growth in the Canadian and Mexican

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businesses. Growth in Allied Products & Other was driven mainly by the acquisition of Cultec partially offset by volume decreases.

Cost of goods sold and Gross profit - The following table presents gross profit by reportable segment for the three months ended December 31, 2022 and 2021.

(Amounts in thousands)	2022		2021		$ Variance		% Variance
Pipe	$	92,816	$	68,717	$	24,099	35.1	%
Infiltrator	41,345		56,871		(15,526)		(27.3)
International	11,881		11,816		65		0.6
Allied Products & Other	77,161		71,617		5,544		7.7
Intersegment eliminations	714		(44)		758		(1,722.7)
Total gross profit	$	223,917	$	208,977	$	14,940	7.1	%

Our consolidated Cost of goods sold for the three months ended December 31, 2022 decreased by $75.1 million, or 14.8%, and our consolidated Gross profit increased by $14.9 million, or 7.1%, compared to the same period in fiscal 2022. The increase in our gross profit was primarily due to improved pricing as well as favorable material cost partially offset by a decrease in volume, inflationary cost pressures along with higher manufacturing costs.

Selling, general and administrative expenses

	Three Months Ended December 31,
(Amounts in thousands)	2022			2021
Selling, general and administrative expenses	$	85,936		$	80,059
% of Net sales	13.1		%	11.2		%

Selling, general and administrative expenses for three months ended December 31, 2022 increased $5.9 million from the same period in fiscal 2022 and as a percentage of sales, increased by 1.9%. The increase in Selling, general and administrative expenses is the result of increased headcount.

(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 in fiscal 2022.

Intangible amortization - Intangible amortization decreased $1.3 million due to the accelerated method of amortization for customer relationships.

Interest expense - Interest expense increased $11.2 million in the three months ended December 31, 2022 compared to the same period in the previous fiscal year. The increase was primarily due to increased average debt levels.

Derivative gains and other income, net - Derivative gains and other income increased by $3.1 million for the three months ended December 31, 2022 compared to the same period in the previous fiscal year primarily due to interest income.

Income tax expense - The following table presents the effective tax rates for the three months ended December 31, 2022 and 2021.

	Three Months Ended December 31,
	2022		2021
Effective tax rate	24.0	%	28.1	%

The change in the effective tax rate for the three months ended December 31, 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 decreased for the three months ended December 31, 2022 as compared to the same period in the previous fiscal year.

Net income attributable to noncontrolling interest - Net income attributable to noncontrolling interest increased for three months ended December 31, 2022 due to an increase in net income at our ADS Mexicana joint venture.

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Comparison of the Nine Months Ended December 31, 2022 to the Nine Months Ended December 31, 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 Nine Months Ended December 31,
	2022				2021
Consolidated Statements of Operations data:	(In thousands)
Net sales	$	2,453,562	100.0	%	$	2,091,128	100.0	%
Cost of goods sold	1,557,575		63.5		1,480,973		70.8
Gross profit	895,987		36.5		610,155		29.2
Selling, general and administrative	261,095		10.6		230,231		11.0
(Gain) loss on disposal of assets and costs from exit and disposal activities	(147)		—		2,554		0.1
Intangible amortization	41,360		1.7		46,229		2.2
Income from operations	593,679		24.2		331,141		15.8
Interest expense	49,334		2.0		25,100		1.2
Derivative gains and other income, net	(5,632)		(0.2)		(2,791)		(0.1)
Income before income taxes	549,977		22.4		308,832		14.8
Income tax expense	128,641		5.2		82,063		3.9
Equity in net income of unconsolidated affiliates	(3,705)		(0.2)		(1,128)		(0.1)
Net income	425,041		17.3		227,897		10.9
Less: net income attributable to noncontrolling interest	3,848		0.2		2,873		0.1
Net income attributable to ADS	$	421,193	17.2	%	$	225,024	10.8	%

Net sales - The following table presents Net sales to external customers by reportable segment for the nine months ended December 31, 2022 and 2021.

(Amounts in thousands)	2022		2021		$ Variance		% Variance
Pipe	$	1,370,071	$	1,150,655	$	219,416	19.1	%
Infiltrator	354,603		353,567		1,036		0.3
International	185,425		170,999		14,426		8.4
Allied Products & Other	543,463		415,907		127,556		30.7
Total Consolidated	$	2,453,562	$	2,091,128	$	362,434	17.3	%

Our consolidated Net sales for the nine months ended December 31, 2022 increased by $362.4 million, or 17.3%, 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.

Our Pipe and Infiltrator segments experienced growth primarily through improved pricing/mix of products sold partially offset by volume decreases. 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 and the acquisition of Cultec partially offset by volume decreases.

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Cost of goods sold and Gross profit - The following table presents gross profit by reportable segment for the nine months ended December 31, 2022 and 2021.

(Amounts in thousands)	2022		2021		$ Variance		% Variance
Pipe	$	380,199	$	194,644	$	185,555	95.3	%
Infiltrator	178,438		168,090		10,348		6.2
International	47,253		45,512		1,741		3.8
Allied Products & Other	289,768		200,488		89,280		44.5
Intersegment eliminations	329		1,421		(1,092)		(76.8)
Total gross profit	$	895,987	$	610,155	$	285,832	46.8	%

Our consolidated Cost of goods sold for the nine months ended December 31, 2022 increased by $76.6 million, or 5.2%, and our consolidated Gross profit increased by $285.8 million, or 46.8%, 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 a decrease in volume, inflationary cost pressures and higher manufacturing costs.

Selling, general and administrative expenses

	Nine Months Ended December 31,
(Amounts in thousands)	2022			2021
Selling, general and administrative expenses	$	261,095		$	230,231
% of Net sales	10.6		%	11.0		%

Selling, general and administrative expenses for nine months ended December 31, 2022 increased $30.9 million from the same period in fiscal 2022 and as a percentage of sales, decreased by 0.4%. 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 in fiscal 2022.

Intangible amortization - Intangible amortization decreased $4.9 million due to the accelerated method of amortization for customer relationships.

Interest expense - Interest expense increased $24.2 million in the nine months ended December 31, 2022 compared to the same period in the previous fiscal year. The increase was primarily due to increased average debt levels.

Derivative gains and other income, net - Derivative gains and other income increased by $2.8 million for the nine months ended December 31, 2022 compared to the same period in the previous fiscal year primarily due to increased interest income.

Income tax expense - The following table presents the effective tax rates for the nine months ended December 31, 2022 and 2021.

	Nine Months Ended December 31,
	2022		2021
Effective tax rate	23.4	%	26.6	%

The change in the effective tax rate for the nine months ended December 31, 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 nine months ended December 31, 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 nine months ended December 31, 2022 due to an increase in net income at our ADS Mexicana joint venture.

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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 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 December 31,						Nine Months Ended December 31,
	2022			2021			2022			2021
	(In thousands)						(In thousands)
Net income	$	83,182		$	74,462		$	425,041		$	227,897
Depreciation and amortization	35,846			34,837			107,346			103,687
Interest expense	20,001			8,756			49,334			25,100
Income tax expense	26,068			28,792			128,641			82,063
EBITDA	165,097			146,847			710,362			438,747
(Gain) loss on disposal of assets and costs from exit and disposal activities	(348)			3,466			(147)			2,554
Stock-based compensation expense	6,179			6,242			19,912			18,511
ESOP compensation expense	—			17,221			—			43,389
Transaction costs(a)	1,334			2,145			3,417			3,022
Other adjustments(b)	(2,525)			234			(1,562)			1,318
Adjusted EBITDA	$	169,737		$	176,155		$	731,982		$	507,541
Adjusted EBITDA Margin	25.9		%	24.6		%	29.8		%	24.3		%

(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.

	Nine Months Ended December 31,
(Amounts in thousands)	2022		2021
Net cash provided by operating activities	$	660,438	$	193,847
Capital expenditures	(126,858)		(100,367)
Free Cash Flow	533,580		93,480
Total debt (debt and finance lease obligations)	1,308,768
Cash	426,690
Net debt (total debt less cash)	882,078
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.

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

(Amounts in thousands)	December 31, 2022
Revolver capacity	$	600,000
Less: outstanding borrowings	—
Less: letters of credit	(9,650)
Revolver available liquidity	$	590,350

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 December 31, 2022, we had $1,017.1 million in liquidity, including $426.7 million of cash, $590.4 million in borrowings available under our Revolving Credit Agreement, net 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 $787.1 million as of December 31, 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 a decrease in accounts payable and other accrued liabilities partially offset by a decrease in accounts receivable and inventory due to seasonality.

	Nine Months Ended December 31,
(Amounts in thousands)	2022		2021
Net cash provided by operating activities	$	660,438	$	193,847
Net cash used in investing activities	(174,822)		(150,040)
Net cash used in financing activities	(78,590)		(216,574)

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Operating Cash Flows – Cash flows from operating activities increased $466.6 million during the nine months ended December 31, 2022 primarily driven by operating income and changes in net working capital.

Investing Cash Flows - Cash flows used in investing activities during the nine months ended December 31, 2022 increased by $24.8 million compared to the same period in fiscal 2022. The increase in cash used in investing activities was primarily due to capital expenditures.

Capital expenditures totaled $126.9 million and $100.4 million for the nine months ended December 31, 2022 and 2021, respectively. Our capital expenditures for the nine months ended December 31, 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 $80 million of open orders as of December 31, 2022. Such capital expenditures are expected to be financed using funds generated by operations.

Financing Cash Flows - During the nine months ended December 31, 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 nine months ended December 31, 2022 included repurchase of common stock of $375.0 million, payments of $237.5 million on our revolving credit facilities, $30.1 million of dividend payments, and $28.7 million for shares withheld for tax purposes.

During the nine months ended December 31, 2021, cash used included the repurchase of common stock of $292.0 million, repayment of $124.6 million on the Revolving Credit Facility, $13.1 million of shares withheld for tax purposes, $27.8 million of dividend payments and payments on our finance lease obligations of $49.4 million. Cash provided by financing activities included proceeds of $258.1 million on the Revolving Credit Facility.

Cash held by Foreign Subsidiaries - As of December 31, 2022, we had $33.2 million in cash that was held by our foreign subsidiaries, including $23.3 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 December 31, 2022, the outstanding principal drawn on Term Loan Facility was $429.0 million and there were no borrowings on the Revolving Credit Facility. The Company had $590.4 million available to be drawn on the Revolving Credit Facility, net of $9.7 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 December 31, 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 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. 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.

Interest on the 2027 Notes is 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

- 26 -

its outstanding borrowings under the Company’s Base Credit Agreement. 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 is 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 $21.0 million and had an initial term of between 12 and 84 months, based on the life of the equipment. The equipment financing bears a weighted average interest of 1.5% as of December 31, 2022.

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 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 December 31, 2022.

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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 December 31, 2022, our South American Joint Venture had approximately $6.3 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;

•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;

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•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 $4.2 million based on our borrowings as of December 31, 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 $10.2 million, for the twelve months ended December 31, 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 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 December 31, 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 December 31, 2022, the Company repurchased 1.9 million shares of common stock at a cost of $179.9 million. As of December 31, 2022, approximately $625.0 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 December 31, 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)
October 1, 2022 to October 31, 2022	274	$	124.50	274	$	770,696
November 1, 2022 to November 30, 2022	1,388	89.77		1,388	646,100
December 1, 2022 to December 31, 2022	229	92.39		229	624,973
Total	1,891	$	95.13	1,891	$	624,973

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 December 31, 2022, has been formatted in Inline XBRL and contained in Exhibit 101.

* Filed herewith

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: February 2, 2023

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

- 32 -

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: February 2, 2023

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: February 2, 2023

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 December 31, 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.

February 2, 2023

/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 December 31, 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.

February 2, 2023

/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	9 Months Ended
	Dec. 31, 2022	Jan. 26, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 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		81,233,409
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001604028
Current Fiscal Year End Date	--03-31

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Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022
Current assets:
Cash	$ 426,690	$ 20,125
Receivables (less allowance for doubtful accounts of $9,311 and $8,198, respectively)	242,485	341,753
Inventories	459,029	494,324
Other current assets	29,162	15,696
Total current assets	1,157,366	871,898
Property, plant and equipment, net	685,496	619,383
Other assets:
Goodwill	619,275	610,293
Intangible assets, net	421,450	431,385
Other assets	122,071	116,799
Total assets	3,005,658	2,649,758
Current liabilities:
Current maturities of debt obligations	15,601	19,451
Current maturities of finance lease obligations	6,556	5,089
Accounts payable	174,106	224,986
Other accrued liabilities	170,549	134,877
Accrued income taxes	3,468	6,838
Total current liabilities	370,280	391,241
Long-term debt obligations (less unamortized debt issuance costs of $12,314 and $1,648, respectively)	1,272,040	908,705
Long-term finance lease obligations	14,571	11,393
Deferred tax liabilities	163,259	168,435
Other liabilities	69,767	64,939
Total liabilities	1,889,917	1,544,713
Commitments and contingencies (see Note 9)
Mezzanine equity:
Redeemable common stock: $0.01 par value; 9,669 and 0 shares outstanding, respectively	157,128	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	157,128	195,384
Stockholders’ equity:
Common stock; $0.01 par value: 1,000,000 shares authorized; 78,785 and 75,529 shares issued, respectively; 71,545 and 72,309 shares outstanding, respectively	11,645	11,612
Paid-in capital	1,128,915	1,065,628
Common stock in treasury, at cost	(719,702)	(318,691)
Accumulated other comprehensive loss	(29,871)	(24,386)
Retained earnings	550,011	158,876
Total ADS stockholders’ equity	940,998	893,039
Noncontrolling interest in subsidiaries	17,615	16,622
Total stockholders’ equity	958,613	909,661
Total liabilities, mezzanine equity and stockholders’ equity	$ 3,005,658	$ 2,649,758

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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022
Allowance for doubtful accounts	$ 9,311	$ 8,198
Unamortized debt issuance costs	$ 12,314	$ 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)	78,785,000	75,529,000
Common stock, shares outstanding (in shares)	71,545,000	72,309,000
Redeemable Common Stock
Mezzanine equity, par value per share	$ 0.01	$ 0.01
Mezzanine equity, shares outstanding (in shares)	9,669,000	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		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Net sales	$ 655,167,000	$ 715,357,000	$ 2,453,562,000	$ 2,091,128,000
Cost of goods sold	431,250,000	506,380,000	1,557,575,000	1,480,973,000
Gross profit	223,917,000	208,977,000	895,987,000	610,155,000
Operating expenses:
Selling, general and administrative	85,936,000	80,059,000	261,095,000	230,231,000
(Gain) loss on disposal of assets and costs from exit and disposal activities	(348,000)	3,466,000	(147,000)	2,554,000
Intangible amortization	13,842,000	15,138,000	41,360,000	46,229,000
Income from operations	124,487,000	110,314,000	593,679,000	331,141,000
Other expense:
Interest expense	20,001,000	8,756,000	49,334,000	25,100,000
Derivative gains and other income, net	(4,125,000)	(979,000)	(5,632,000)	(2,791,000)
Income before income taxes	108,611,000	102,537,000	549,977,000	308,832,000
Income tax expense	26,068,000	28,792,000	128,641,000	82,063,000
Equity in net income of unconsolidated affiliates	(639,000)	(717,000)	(3,705,000)	(1,128,000)
Net income	83,182,000	74,462,000	425,041,000	227,897,000
Less: net income attributable to noncontrolling interest	1,142,000	784,000	3,848,000	2,873,000
Net income attributable to ADS	$ 82,040,000	$ 73,678,000	$ 421,193,000	$ 225,024,000
Weighted average common shares outstanding:
Basic (in shares)	82,067	71,267	82,891	71,087
Diluted (in shares)	82,987	72,789	83,980	72,752
Net income per share:
Basic (in dollars per share)	$ 1.00	$ 0.88	$ 5.08	$ 2.67
Diluted (in dollars per share)	$ 0.99	$ 0.86	$ 5.02	$ 2.61

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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 83,182,000	$ 74,462,000	$ 425,041,000	$ 227,897,000
Currency translation gain (loss)	4,973,000	(860,000)	(4,688,000)	(2,225,000)
Comprehensive income	88,155,000	73,602,000	420,353,000	225,672,000
Less: other comprehensive income (loss) attributable to noncontrolling interest	1,069,000	(199,000)	797,000	236,000
Less: net income attributable to noncontrolling interest	1,142,000	784,000	3,848,000	2,873,000
Total comprehensive income attributable to ADS	$ 85,944,000	$ 73,017,000	$ 415,708,000	$ 222,563,000

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities
Net income	$ 425,041,000	$ 227,897,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	107,346,000	103,687,000
Deferred income taxes	(4,165,000)	6,243,000
(Gain) loss on disposal of assets and costs from exit and disposal activities	(147,000)	2,554,000
ESOP and stock-based compensation	19,912,000	61,900,000
Amortization of deferred financing charges	909,000	286,000
Fair market value adjustments to derivatives	2,309,000	118,000
Equity in net income of unconsolidated affiliates	(3,705,000)	(1,128,000)
Other operating activities	2,732,000	(9,898,000)
Changes in working capital:
Receivables	99,958,000	(59,821,000)
Inventories	34,871,000	(161,878,000)
Prepaid expenses and other current assets	(4,532,000)	(5,199,000)
Accounts payable, accrued expenses, and other liabilities	(20,091,000)	29,086,000
Net cash provided by operating activities	660,438,000	193,847,000
Cash Flows from Investing Activities
Capital expenditures	(126,858,000)	(100,367,000)
Acquisition, net of cash acquired	(48,010,000)	(49,210,000)
Other investing activities	46,000	(463,000)
Net cash used in investing activities	(174,822,000)	(150,040,000)
Cash Flows from Financing Activities
Payments on syndicated Term Loan Facility	(5,250,000)	(5,250,000)
Proceeds from Senior Notes due 2030	500,000,000	0
Debt issuance costs	(11,575,000)	0
Proceeds from Equipment Financing	0	35,963,000
Payments on Equipment Financing	(10,213,000)	(1,177,000)
Payments on finance lease obligations	(4,954,000)	(49,365,000)
Repurchase of common stock	(375,027,000)	(292,000,000)
Cash dividends paid	(30,111,000)	(27,826,000)
Dividends paid to noncontrolling interest holder	(3,652,000)	(1,471,000)
Proceeds from exercise of stock options	5,145,000	4,274,000
Payment of withholding taxes on vesting of restricted stock units	(28,653,000)	(13,055,000)
Other financing activities	0	(167,000)
Net cash used in financing activities	(78,590,000)	(216,574,000)
Effect of exchange rate changes on cash	(461,000)	(69,000)
Net change in cash	406,565,000	(172,836,000)
Cash at beginning of period	20,125,000	195,009,000
Cash at end of period	426,690,000	22,173,000
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	136,320,000	81,028,000
Cash paid for interest	24,757,000	20,080,000
Non-cash operating, investing and financing activities:
Acquisition of property, plant and equipment under finance lease and incurred lease obligations	10,684,000	16,258,000
Balance in accounts payable for the acquisition of property, plant and equipment	14,748,000	16,313,000
Revolving Credit Agreement
Cash Flows from Financing Activities
Proceeds from Revolving Credit Agreement	26,200,000	258,100,000
Payments on Revolving Credit Agreement	(140,500,000)	(124,600,000)
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	227,897,000										225,024,000					225,024,000	2,873,000
Other comprehensive (loss) income	(2,225,000)										(2,461,000)				(2,461,000)		236,000
Redeemable convertible preferred stock dividends	(4,364,000)										(4,364,000)					(4,364,000)
Common stock dividends	(23,540,000)										(23,540,000)					(23,540,000)
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	37,502,000	$ 5,887,000					$ 5,887,000				37,502,000		37,502,000
Exercise of common stock options (in shares)												195
Exercise of common stock options	4,275,000										4,275,000	$ 2,000	4,273,000
Restricted stock awards (in shares)												131		30
Restricted stock awards	(3,344,000)										(3,344,000)	$ 1,000		$ (3,345,000)
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	18,511,000										18,511,000		18,511,000
ESOP distribution in common stock (in shares)												1,850
ESOP distribution in common stock	30,056,000										30,056,000	$ 18,000	30,038,000
Other	(301,000)										(301,000)		(301,000)
Ending balance, common stock (in shares) at Dec. 31, 2021												74,492
Ending balance, treasury stock (in shares) at Dec. 31, 2021														3,197
Ending balance at Dec. 31, 2021	814,768,000										799,399,000	$ 11,601,000	1,008,610,000	$ (316,049,000)	(26,681,000)	121,918,000	15,369,000
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)							(471)
Allocation of ESOP shares to participants for compensation	$ 37,502,000	5,887,000					$ 5,887,000				37,502,000		37,502,000
ESOP distribution in common stock, temporary equity (in shares)					(2,404)
ESOP distribution in common stock		(30,056,000)			$ (30,056,000)
Mezzanine equity, ending balance (in shares) at Dec. 31, 2021							495	16,871
Mezzanine equity, ending balance at Dec. 31, 2021		205,742,000			$ 210,888,000		$ (5,146,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock dividends per share (in dollars per share)	$ 0.33
Beginning balance, common stock (in shares) at Sep. 30, 2021												73,333
Beginning balance, treasury stock (in shares) at Sep. 30, 2021														3,196
Beginning 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	74,462,000										73,678,000					73,678,000	784,000
Other comprehensive (loss) income	(860,000)										(661,000)				(661,000)		(199,000)
Redeemable convertible preferred stock dividends	(1,267,000)										(1,267,000)					(1,267,000)
Common stock dividends	(7,879,000)										(7,879,000)					(7,879,000)
Allocation of ESOP shares to participants for compensation	15,353,000	1,868,000					$ 1,868,000				15,353,000		15,353,000
Exercise of common stock options (in shares)												71
Exercise of common stock options	1,095,000										1,095,000	$ 1,000	1,094,000
Restricted stock awards (in shares)												2		1
Restricted stock awards	(114,000)										(114,000)	$ 0		$ (114,000)
Performance-based restricted stock units (in shares)												0		0
Performance-based restricted stock units	6,242,000										6,242,000	$ 0		$ 0
Stock-based compensation expense	89,000										89,000		6,242,000
ESOP distribution in common stock (in shares)												1,086
ESOP distribution in common stock	17,644,000										17,644,000	$ 10,000	17,634,000
Other													89,000
Ending balance, common stock (in shares) at Dec. 31, 2021												74,492
Ending balance, treasury stock (in shares) at Dec. 31, 2021														3,197
Ending balance at Dec. 31, 2021	814,768,000										799,399,000	$ 11,601,000	1,008,610,000	$ (316,049,000)	(26,681,000)	121,918,000	15,369,000
Mezzanine equity, beginning balance (in shares) at Sep. 30, 2021					18,282		644
Mezzanine equity, beginning balance at Sep. 30, 2021		221,518,000			$ 228,532,000		$ (7,014,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Allocation of ESOP shares to participants for compensation (in shares)							(149)
Allocation of ESOP shares to participants for compensation	$ 15,353,000	1,868,000					$ 1,868,000				15,353,000		15,353,000
ESOP distribution in common stock, temporary equity (in shares)					(1,411)
ESOP distribution in common stock		(17,644,000)			$ (17,644,000)
Mezzanine equity, ending balance (in shares) at Dec. 31, 2021							495	16,871
Mezzanine equity, ending balance at Dec. 31, 2021		205,742,000			$ 210,888,000		$ (5,146,000)
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	425,041,000										421,193,000					421,193,000	3,848,000
Other comprehensive (loss) income	(4,688,000)										(5,485,000)				(5,485,000)		797,000
Common stock dividends	(30,058,000)										(30,058,000)					(30,058,000)
Dividends paid to noncontrolling interest holder	$ (3,652,000)																(3,652,000)
Share repurchases (in shares)	3,800													3,756
Share repurchases	$ (375,027,000)										(375,027,000)			$ (375,027,000)
KSOP redeemable common stock conversion (in shares)												2,353
KSOP redeemable common stock conversion	38,256,000										38,256,000	$ 24,000	38,232,000
Exercise of common stock options (in shares)												200
Exercise of common stock options	5,145,000										5,145,000	$ 2,000	5,143,000
Restricted stock awards (in shares)												176		59
Restricted stock awards	(5,631,000)										(5,631,000)	$ 2,000		$ (5,633,000)
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	$ 19,912,000										19,912,000		19,912,000
Ending balance, common stock (in shares) at Dec. 31, 2022	71,545											78,785
Ending balance, treasury stock (in shares) at Dec. 31, 2022														7,240
Ending balance at Dec. 31, 2022	$ 958,613,000										940,998,000	$ 11,645,000	1,128,915,000	$ (719,702,000)	(29,871,000)	550,011,000	17,615,000
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	(2,353)
Temporary equity, conversion of convertible securities			$ 0	$ (38,256,000)		$ (195,384,000)			$ 195,384,000	$ (38,256,000)
Mezzanine equity, ending balance (in shares) at Dec. 31, 2022					0			9,669
Mezzanine equity, ending balance at Dec. 31, 2022	$ 157,128,000	157,128,000			$ 0			$ 157,128,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock dividends per share (in dollars per share)	$ 0.36
Beginning balance, common stock (in shares) at Sep. 30, 2022												78,519
Beginning balance, treasury stock (in shares) at Sep. 30, 2022														5,314
Beginning 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	83,182,000										82,040,000					82,040,000	1,142,000
Other comprehensive (loss) income	4,973,000										3,904,000				3,904,000		1,069,000
Common stock dividends	(9,819,000)										(9,819,000)					(9,819,000)
Dividends paid to noncontrolling interest holder	$ (1,925,000)																(1,925,000)
Share repurchases (in shares)	1,900													1,891
Share repurchases	$ (179,864,000)										(179,864,000)			$ (179,864,000)
KSOP redeemable common stock conversion (in shares)												171
KSOP redeemable common stock conversion	2,800,000										2,800,000	$ 2,000	2,798,000
Exercise of common stock options (in shares)												17
Exercise of common stock options	485,000										485,000	$ 0	485,000
Restricted stock awards (in shares)												78		35
Restricted stock awards	(3,140,000)										(3,140,000)	$ 1,000		$ (3,141,000)
Stock-based compensation expense	$ 6,179,000										6,179,000		6,179,000
Ending balance, common stock (in shares) at Dec. 31, 2022	71,545											78,785
Ending balance, treasury stock (in shares) at Dec. 31, 2022														7,240
Ending balance at Dec. 31, 2022	$ 958,613,000										$ 940,998,000	$ 11,645,000	$ 1,128,915,000	$ (719,702,000)	$ (29,871,000)	$ 550,011,000	$ 17,615,000
Mezzanine equity, beginning balance (in shares) at Sep. 30, 2022					0			9,840
Mezzanine equity, beginning balance at Sep. 30, 2022		159,928,000			$ 0			$ 159,928,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary equity, conversion of convertible securities (in shares)										(171)
Temporary equity, conversion of convertible securities				$ (2,800,000)						$ (2,800,000)
Mezzanine equity, ending balance (in shares) at Dec. 31, 2022					0			9,669
Mezzanine equity, ending balance at Dec. 31, 2022	$ 157,128,000	$ 157,128,000			$ 0			$ 157,128,000
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		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Statement of Stockholders' Equity [Abstract]
Common stock dividends per share	$ 0.12	$ 0.11	$ 0.36	$ 0.33

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Background and Summary of Significant Accounting Policies

9 Months Ended

Dec. 31, 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 December 31, 2022 and the results of operations for the three and nine months ended December 31, 2022 and cash flows for the nine months ended December 31, 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

9 Months Ended

Dec. 31, 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 nine months ended December 31, 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

9 Months Ended

Dec. 31, 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:

	December 31, 2022		March 31, 2022
	(In thousands)
Contract asset - product returns	$	901	$	978
Refund liability	2,646		2,356

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Leases	9 Months Ended
	Dec. 31, 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

9 Months Ended

Dec. 31, 2022

Inventory Disclosure [Abstract]

Inventories

INVENTORIES

Inventories as of the periods presented consisted of the following:

	December 31, 2022		March 31, 2022
	(In thousands)
Raw materials	$	123,722	$	156,050
Finished goods	335,307		338,274
Total inventories	$	459,029	$	494,324

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Net Income Per Share and Stockholders' Equity

9 Months Ended

Dec. 31, 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 nine months ended December 31, 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 nine months ended December 31, 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 December 31,				Nine Months Ended December 31,
(In thousands, except per share data)	2022		2021		2022		2021
NET INCOME PER SHARE—BASIC:
Net income attributable to ADS	$	82,040	$	73,678	$	421,193	$	225,024
Adjustments for:
Dividends to participating securities	—		(1,357)		—		(4,633)
Net income available to common stockholders and participating securities	82,040		72,321		421,193		220,391
Undistributed income allocated to participating securities	—		(9,457)		—		(30,870)
Net income available to common stockholders – Basic	$	82,040	$	62,864	$	421,193	$	189,521
Weighted average number of common shares outstanding – Basic	82,067		71,267		82,891		71,087
Net income per common share – Basic	$	1.00	$	0.88	$	5.08	$	2.67
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	82,040	$	62,864	$	421,193	$	189,521
Weighted average number of common shares outstanding – Basic	82,067		71,267		82,891		71,087
Assumed restricted stock	114		236		131		245
Assumed exercise of stock options	626		854		702		904
Assumed performance units	180		432		256		516
Weighted average number of common shares outstanding – Diluted	82,987		72,789		83,980		72,752
Net income per common share – Diluted	$	0.99	$	0.86	$	5.02	$	2.61
Potentially dilutive securities excluded as anti-dilutive	42		12,271		45		13,240

Stockholders’ Equity – During the three and nine months ended December 31, 2022, the Company repurchased 1.9 million and 3.8 million shares, respectively, of common stock at a cost of $179.9 million and $375.0 million, respectively.

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Related Party Transactions

9 Months Ended

Dec. 31, 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 December 31, 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 December 31, 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 December 31, 2022 and March 31, 2022, the outstanding principal balances of the credit facility including letters of credit were $6.3 million and $9.9 million, respectively. As of December 31, 2022, there were no U.S. dollar denominated loans. The weighted average interest rate as of December 31, 2022 was 11.5% on Chilean peso denominated loans.

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Debt

9 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Debt

DEBT

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

	December 31, 2022		March 31, 2022
	(In thousands)
Term Loan Facility	$	429,000	$	434,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		—
Revolving Credit Facility	—		114,300
Equipment Financing	20,955		31,254
Total	1,299,955		929,804
Unamortized debt issuance costs	(12,314)		(1,648)
Current maturities	(15,601)		(19,451)
Long-term debt obligations	$	1,272,040	$	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 December 31, 2022 and March 31, 2022 amounted to $9.7 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 had an initial term of between 12 and 84 months, based on the life of the equipment, and bears a weighted average interest of 1.5% as of December 31, 2022. The current portion of the equipment financing is $8.6 million, and the long-term portion is $12.3 million at December 31, 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:

	December 31, 2022				March 31, 2022
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior Notes due 2027	$	328,577	$	350,000	$	349,902	$	350,000
Senior Notes due 2030	486,570		500,000		—		—
Equipment Financing	19,981		20,955		29,302		31,254
Total fair value	$	835,128	$	870,955	$	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

9 Months Ended

Dec. 31, 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 price and quantity as of December 31, 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	9 Months Ended
	Dec. 31, 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 December 31, 2022 and 2021, the Company utilized an effective tax rate of 24.0% and 28.1%, respectively, to calculate its provision for income taxes. For the nine months ended December 31, 2022 and 2021, the Company utilized an effective tax rate of 23.4% and 26.6%, respectively, to calculate its provision for income taxes. State and local income taxes increased the effective rate for the three and nine months ended December 31, 2022 and 2021. The Company’s ESOP also increased the effective rate for three and nine months ended December 31, 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 months ended December 31, 2022 and nine months ended December 31, 2022 and 2021.

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Stock-Based Compensation

9 Months Ended

Dec. 31, 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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Component of income before income taxes:
Cost of goods sold	$	743	$	700	$	2,175	$	2,019
Selling, general and administrative expenses	5,436		5,542		17,737		16,492
Total stock-based compensation expense	$	6,179	$	6,242	$	19,912	$	18,511

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

	Three Months Ended December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Stock-based compensation expense:
Stock Options	$	1,035	$	793	$	3,316	$	2,406
Restricted Stock	1,754		1,480		5,480		4,359
Performance-based Restricted Stock Units	2,827		3,471		9,619		10,432
Non-Employee Directors	563		498		1,497		1,314
Total stock-based compensation expense	$	6,179	$	6,242	$	19,912	$	18,511

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 nine months ended December 31, 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 $0.1 million and $11.9 million, respectively.

Performance-based Restricted Stock Units ("Performance Units") – During the nine months ended December 31, 2022, the Company granted 0.1 million performance share units at a grant date fair value of $6.6 million.

Options – During the nine months ended December 31, 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:

	Nine Months Ended December 31, 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

9 Months Ended

Dec. 31, 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
	December 31, 2022						December 31, 2021
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	375,719	$	(10,839)	$	364,880	$	400,027	$	(3,332)	$	396,695
Infiltrator	103,895		(14,961)		88,934		148,677		(26,314)		122,363
International
International - Pipe	44,882		(5,311)		39,571		41,156		(5,700)		35,456
International - Allied Products & Other	14,075		—		14,075		14,687		—		14,687
Total International	58,957		(5,311)		53,646		55,843		(5,700)		50,143
Allied Products & Other	149,044		(1,337)		147,707		147,476		(1,320)		146,156
Intersegment Eliminations	(32,448)		32,448		—		(36,666)		36,666		—
Total Consolidated	$	655,167	$	—	$	655,167	$	715,357	$	—	$	715,357
	Nine Months Ended
	December 31, 2022						December 31, 2021
	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	1,401,554	$	(31,483)	$	1,370,071	$	1,158,558	$	(7,903)	$	1,150,655
Infiltrator	420,920		(66,317)		354,603		421,330		(67,763)		353,567
International
International - Pipe	154,762		(18,509)		136,253		142,135		(13,784)		128,351
International - Allied Products & Other	49,172		—		49,172		42,648		—		42,648
Total International	203,934		(18,509)		185,425		184,783		(13,784)		170,999
Allied Products & Other	550,153		(6,690)		543,463		420,231		(4,324)		415,907
Intersegment Eliminations	(122,999)		122,999		—		(93,774)		93,774		—
Total Consolidated	$	2,453,562	$	—	$	2,453,562	$	2,091,128	$	—	$	2,091,128

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

	Three Months Ended December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Segment Adjusted Gross Profit
Pipe	$	106,279	$	92,066	$	421,011	$	258,681
Infiltrator	46,497		60,546		193,569		178,795
International	13,342		13,240		51,456		49,695
Allied Products & Other	78,401		72,785		293,472		204,063
Intersegment Eliminations	714		(44)		329		1,421
Total	$	245,233	$	238,593	$	959,837	$	692,655
Depreciation and Amortization
Pipe	$	12,754	$	12,534	$	38,754	$	36,595
Infiltrator	5,120		3,551		15,014		10,362
International	1,369		1,403		4,023		4,151
Allied Products & Other(a)	16,603		17,349		49,555		52,579
Total	$	35,846	$	34,837	$	107,346	$	103,687
Capital Expenditures
Pipe	$	28,268	$	18,657	$	75,565	$	41,296
Infiltrator	12,810		15,614		33,856		50,774
International	2,366		735		4,393		2,249
Allied Products & Other(a)	7,869		1,597		13,044		6,048
Total	$	51,313	$	36,603	$	126,858	$	100,367

(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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	223,917	$	208,977	$	895,987	$	610,155
Depreciation and Amortization	20,573		18,042		61,675		52,824
ESOP and stock-based compensation expense	743		11,574		2,175		29,676
Total Segment Adjusted Gross Profit	$	245,233	$	238,593	$	959,837	$	692,655

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Subsequent Events	9 Months Ended
	Dec. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTSCommon Stock Dividend - During the fourth quarter of fiscal 2023, the Company declared a quarterly cash dividend of $0.12 per share of common stock. The dividend is payable on March 15, 2023 to stockholders of record at the close of business on March 1, 2023.

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Background and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Dec. 31, 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 December 31, 2022 and the results of operations for the three and nine months ended December 31, 2022 and cash flows for the nine months ended December 31, 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)

9 Months Ended

Dec. 31, 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)

9 Months Ended

Dec. 31, 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:

	December 31, 2022		March 31, 2022
	(In thousands)
Contract asset - product returns	$	901	$	978
Refund liability	2,646		2,356

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Inventories (Tables)

9 Months Ended

Dec. 31, 2022

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories as of the periods presented consisted of the following:

	December 31, 2022		March 31, 2022
	(In thousands)
Raw materials	$	123,722	$	156,050
Finished goods	335,307		338,274
Total inventories	$	459,029	$	494,324

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Net Income Per Share and Stockholders' Equity (Tables)

9 Months Ended

Dec. 31, 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 December 31,				Nine Months Ended December 31,
(In thousands, except per share data)	2022		2021		2022		2021
NET INCOME PER SHARE—BASIC:
Net income attributable to ADS	$	82,040	$	73,678	$	421,193	$	225,024
Adjustments for:
Dividends to participating securities	—		(1,357)		—		(4,633)
Net income available to common stockholders and participating securities	82,040		72,321		421,193		220,391
Undistributed income allocated to participating securities	—		(9,457)		—		(30,870)
Net income available to common stockholders – Basic	$	82,040	$	62,864	$	421,193	$	189,521
Weighted average number of common shares outstanding – Basic	82,067		71,267		82,891		71,087
Net income per common share – Basic	$	1.00	$	0.88	$	5.08	$	2.67
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	82,040	$	62,864	$	421,193	$	189,521
Weighted average number of common shares outstanding – Basic	82,067		71,267		82,891		71,087
Assumed restricted stock	114		236		131		245
Assumed exercise of stock options	626		854		702		904
Assumed performance units	180		432		256		516
Weighted average number of common shares outstanding – Diluted	82,987		72,789		83,980		72,752
Net income per common share – Diluted	$	0.99	$	0.86	$	5.02	$	2.61
Potentially dilutive securities excluded as anti-dilutive	42		12,271		45		13,240

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Debt (Tables)

9 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Long-Term Debt

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

	December 31, 2022		March 31, 2022
	(In thousands)
Term Loan Facility	$	429,000	$	434,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		—
Revolving Credit Facility	—		114,300
Equipment Financing	20,955		31,254
Total	1,299,955		929,804
Unamortized debt issuance costs	(12,314)		(1,648)
Current maturities	(15,601)		(19,451)
Long-term debt obligations	$	1,272,040	$	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:

	December 31, 2022				March 31, 2022
	Fair Value		Carrying Value		Fair Value		Carrying Value
	(In thousands)
Senior Notes due 2027	$	328,577	$	350,000	$	349,902	$	350,000
Senior Notes due 2030	486,570		500,000		—		—
Equipment Financing	19,981		20,955		29,302		31,254
Total fair value	$	835,128	$	870,955	$	379,204	$	381,254

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Stock-Based Compensation (Tables)

9 Months Ended

Dec. 31, 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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Component of income before income taxes:
Cost of goods sold	$	743	$	700	$	2,175	$	2,019
Selling, general and administrative expenses	5,436		5,542		17,737		16,492
Total stock-based compensation expense	$	6,179	$	6,242	$	19,912	$	18,511

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

	Three Months Ended December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Stock-based compensation expense:
Stock Options	$	1,035	$	793	$	3,316	$	2,406
Restricted Stock	1,754		1,480		5,480		4,359
Performance-based Restricted Stock Units	2,827		3,471		9,619		10,432
Non-Employee Directors	563		498		1,497		1,314
Total stock-based compensation expense	$	6,179	$	6,242	$	19,912	$	18,511

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:

	Nine Months Ended December 31, 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)

9 Months Ended

Dec. 31, 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
	December 31, 2022						December 31, 2021
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	375,719	$	(10,839)	$	364,880	$	400,027	$	(3,332)	$	396,695
Infiltrator	103,895		(14,961)		88,934		148,677		(26,314)		122,363
International
International - Pipe	44,882		(5,311)		39,571		41,156		(5,700)		35,456
International - Allied Products & Other	14,075		—		14,075		14,687		—		14,687
Total International	58,957		(5,311)		53,646		55,843		(5,700)		50,143
Allied Products & Other	149,044		(1,337)		147,707		147,476		(1,320)		146,156
Intersegment Eliminations	(32,448)		32,448		—		(36,666)		36,666		—
Total Consolidated	$	655,167	$	—	$	655,167	$	715,357	$	—	$	715,357
	Nine Months Ended
	December 31, 2022						December 31, 2021
	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	1,401,554	$	(31,483)	$	1,370,071	$	1,158,558	$	(7,903)	$	1,150,655
Infiltrator	420,920		(66,317)		354,603		421,330		(67,763)		353,567
International
International - Pipe	154,762		(18,509)		136,253		142,135		(13,784)		128,351
International - Allied Products & Other	49,172		—		49,172		42,648		—		42,648
Total International	203,934		(18,509)		185,425		184,783		(13,784)		170,999
Allied Products & Other	550,153		(6,690)		543,463		420,231		(4,324)		415,907
Intersegment Eliminations	(122,999)		122,999		—		(93,774)		93,774		—
Total Consolidated	$	2,453,562	$	—	$	2,453,562	$	2,091,128	$	—	$	2,091,128

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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Segment Adjusted Gross Profit
Pipe	$	106,279	$	92,066	$	421,011	$	258,681
Infiltrator	46,497		60,546		193,569		178,795
International	13,342		13,240		51,456		49,695
Allied Products & Other	78,401		72,785		293,472		204,063
Intersegment Eliminations	714		(44)		329		1,421
Total	$	245,233	$	238,593	$	959,837	$	692,655
Depreciation and Amortization
Pipe	$	12,754	$	12,534	$	38,754	$	36,595
Infiltrator	5,120		3,551		15,014		10,362
International	1,369		1,403		4,023		4,151
Allied Products & Other(a)	16,603		17,349		49,555		52,579
Total	$	35,846	$	34,837	$	107,346	$	103,687
Capital Expenditures
Pipe	$	28,268	$	18,657	$	75,565	$	41,296
Infiltrator	12,810		15,614		33,856		50,774
International	2,366		735		4,393		2,249
Allied Products & Other(a)	7,869		1,597		13,044		6,048
Total	$	51,313	$	36,603	$	126,858	$	100,367

(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 December 31,				Nine Months Ended December 31,
	2022		2021		2022		2021
	(In thousands)
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	223,917	$	208,977	$	895,987	$	610,155
Depreciation and Amortization	20,573		18,042		61,675		52,824
ESOP and stock-based compensation expense	743		11,574		2,175		29,676
Total Segment Adjusted Gross Profit	$	245,233	$	238,593	$	959,837	$	692,655

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Background and Summary of Significant Accounting Policies (Detail)	9 Months Ended
	Dec. 31, 2022 segment
Accounting Policies [Abstract]
Number of reportable segments	3

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Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands		9 Months Ended
	Apr. 29, 2022	Dec. 31, 2022	Mar. 31, 2022
Business Acquisition [Line Items]
Goodwill		$ 619,275	$ 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	Dec. 31, 2022	Apr. 29, 2022	Mar. 31, 2022
Business Acquisition [Line Items]
Goodwill		$ 619,275		$ 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	Dec. 31, 2022	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Contract asset - product returns	$ 901	$ 978
Refund liability	$ 2,646	$ 2,356

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Leases (Detail)	9 Months Ended
	Dec. 31, 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	Dec. 31, 2022	Mar. 31, 2022
Inventory Disclosure [Abstract]
Raw materials	$ 123,722	$ 156,050
Finished goods	335,307	338,274
Total inventories	$ 459,029	$ 494,324

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Net Income Per Share and Stockholders' Equity - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	Apr. 30, 2022	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Equity Class Of Treasury Stock [Line Items]
Share repurchases (in shares)		1,900,000	3,800,000
Stock repurchased during period		$ 179,864	$ 375,027	$ 292,000
Common Stock in Treasury
Equity Class Of Treasury Stock [Line Items]
Share repurchases (in shares)		1,891,000	3,756,000	2,574,000
Stock repurchased during period		$ 179,864	$ 375,027	$ 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		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
NET INCOME PER SHARE—BASIC:
Net income attributable to ADS	$ 82,040	$ 73,678	$ 421,193	$ 225,024
Adjustments for:
Dividends to participating securities	0	(1,357)	0	(4,633)
Net income available to common stockholders and participating securities	82,040	72,321	421,193	220,391
Undistributed income allocated to participating securities	0	(9,457)	0	(30,870)
Net income available to common stockholders – Basic	$ 82,040	$ 62,864	$ 421,193	$ 189,521
Weighted average number of common shares outstanding – Basic (in shares)	82,067	71,267	82,891	71,087
Net income per common share - Basic (in dollars per share)	$ 1.00	$ 0.88	$ 5.08	$ 2.67
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$ 82,040	$ 62,864	$ 421,193	$ 189,521
Weighted average number of common shares outstanding – Basic (in shares)	82,067	71,267	82,891	71,087
Weighted average number of common shares outstanding – Diluted (in shares)	82,987	72,789	83,980	72,752
Net income per common share - Diluted (in dollars per share)	$ 0.99	$ 0.86	$ 5.02	$ 2.61
Potentially dilutive securities excluded as anti-dilutive (in shares)	42	12,271	45	13,240
Assumed restricted stock
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	114	236	131	245
Assumed exercise of stock options
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	626	854	702	904
Assumed performance units
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	180	432	256	516

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Related Party Transactions (Detail) - USD ($)	9 Months Ended
	Dec. 31, 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	6,300,000		$ 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	11.50%
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	Dec. 31, 2022	Mar. 31, 2022
Debt Instrument [Line Items]
Long-term debt , gross	$ 1,299,955	$ 929,804
Unamortized debt issuance costs	(12,314)	(1,648)
Current maturities	(15,601)	(19,451)
Long-term debt obligations	1,272,040	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	429,000	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	20,955	$ 31,254
Current maturities	(8,600)
Long-term debt obligations	$ 12,300

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Debt - Senior Secured Credit Facility (Detail) $ in Millions	1 Months Ended
	May 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	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		$ 9.7	$ 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	9 Months Ended
	Dec. 31, 2022	Mar. 31, 2022
Debt Instrument [Line Items]
Current maturities of debt obligations	$ 15,601	$ 19,451
Long-term debt obligations	$ 1,272,040	$ 908,705
Equipment Financing
Debt Instrument [Line Items]
Weighted average interest rate of equipment financing	1.50%
Current maturities of debt obligations	$ 8,600
Long-term debt obligations	$ 12,300
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	Dec. 31, 2022	Mar. 31, 2022
Fair Value
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	$ 835,128	$ 379,204
Fair Value | Equipment Financing
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	19,981	29,302
Carrying Value
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	870,955	381,254
Carrying Value | Equipment Financing
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	20,955	31,254
Senior Notes due 2027 | Fair Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	328,577	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	486,570	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	9 Months Ended
	Dec. 31, 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		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate	24.00%	28.10%	23.40%	26.60%

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Stock-Based Compensation - Summary of Stock-based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	$ 6,179	$ 6,242	$ 19,912	$ 18,511
Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	563	498	1,497	1,314
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	1,035	793	3,316	2,406
Assumed performance units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	1,754	1,480	5,480	4,359
Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	2,827	3,471	9,619	10,432
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	743	700	2,175	2,019
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	$ 5,436	$ 5,542	$ 17,737	$ 16,492

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Stock-Based Compensation (2017 Omnibus Plan) - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	May 24, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock awards	$ (3,140)	$ (114)	$ (5,631)	$ (3,344)
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	$ 100		$ 11,900
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)	9 Months Ended
	Dec. 31, 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)	9 Months Ended
	Dec. 31, 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		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net Sales	$ 655,167	$ 715,357	$ 2,453,562	$ 2,091,128
Operating Segments
Segment Reporting Information [Line Items]
Net Sales	(32,448)	(36,666)	(122,999)	(93,774)
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	32,448	36,666	122,999	93,774
Pipe
Segment Reporting Information [Line Items]
Net Sales	364,880	396,695	1,370,071	1,150,655
Pipe | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	375,719	400,027	1,401,554	1,158,558
Pipe | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(10,839)	(3,332)	(31,483)	(7,903)
Infiltrator
Segment Reporting Information [Line Items]
Net Sales	88,934	122,363	354,603	353,567
Infiltrator | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	103,895	148,677	420,920	421,330
Infiltrator | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(14,961)	(26,314)	(66,317)	(67,763)
International
Segment Reporting Information [Line Items]
Net Sales	53,646	50,143	185,425	170,999
International | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	58,957	55,843	203,934	184,783
International | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(5,311)	(5,700)	(18,509)	(13,784)
International | International - Pipe
Segment Reporting Information [Line Items]
Net Sales	39,571	35,456	136,253	128,351
International | International - Pipe | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	44,882	41,156	154,762	142,135
International | International - Pipe | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(5,311)	(5,700)	(18,509)	(13,784)
International | International - Allied Products & Other
Segment Reporting Information [Line Items]
Net Sales	14,075	14,687	49,172	42,648
International | International - Allied Products & Other | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	14,075	14,687	49,172	42,648
Allied Products & Other
Segment Reporting Information [Line Items]
Net Sales	147,707	146,156	543,463	415,907
Allied Products & Other | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	149,044	147,476	550,153	420,231
Allied Products & Other | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	$ (1,337)	$ (1,320)	$ (6,690)	$ (4,324)

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Business Segments Information - Schedule of Financial Information Attributable to Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	$ 245,233	$ 238,593	$ 959,837	$ 692,655
Depreciation and Amortization	35,846	34,837	107,346	103,687
Capital Expenditures	51,313	36,603	126,858	100,367
Net sales	655,167	715,357	2,453,562	2,091,128
Pipe
Segment Reporting Information [Line Items]
Net sales	364,880	396,695	1,370,071	1,150,655
Infiltrator
Segment Reporting Information [Line Items]
Net sales	88,934	122,363	354,603	353,567
International
Segment Reporting Information [Line Items]
Net sales	53,646	50,143	185,425	170,999
International | International - Pipe
Segment Reporting Information [Line Items]
Net sales	39,571	35,456	136,253	128,351
International | International - Allied Products & Other
Segment Reporting Information [Line Items]
Net sales	14,075	14,687	49,172	42,648
Allied Products & Other
Segment Reporting Information [Line Items]
Net sales	147,707	146,156	543,463	415,907
Operating Segments
Segment Reporting Information [Line Items]
Net sales	(32,448)	(36,666)	(122,999)	(93,774)
Operating Segments | Pipe
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	106,279	92,066	421,011	258,681
Depreciation and Amortization	12,754	12,534	38,754	36,595
Capital Expenditures	28,268	18,657	75,565	41,296
Net sales	375,719	400,027	1,401,554	1,158,558
Operating Segments | Infiltrator
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	46,497	60,546	193,569	178,795
Depreciation and Amortization	5,120	3,551	15,014	10,362
Capital Expenditures	12,810	15,614	33,856	50,774
Net sales	103,895	148,677	420,920	421,330
Operating Segments | International
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	13,342	13,240	51,456	49,695
Depreciation and Amortization	1,369	1,403	4,023	4,151
Capital Expenditures	2,366	735	4,393	2,249
Net sales	58,957	55,843	203,934	184,783
Operating Segments | International | International - Pipe
Segment Reporting Information [Line Items]
Net sales	44,882	41,156	154,762	142,135
Operating Segments | International | International - Allied Products & Other
Segment Reporting Information [Line Items]
Net sales	14,075	14,687	49,172	42,648
Operating Segments | Allied Products & Other
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	78,401	72,785	293,472	204,063
Depreciation and Amortization	16,603	17,349	49,555	52,579
Capital Expenditures	7,869	1,597	13,044	6,048
Net sales	149,044	147,476	550,153	420,231
Intersegment Eliminations
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	714	(44)	329	1,421
Net sales	32,448	36,666	122,999	93,774
Intersegment Eliminations | Pipe
Segment Reporting Information [Line Items]
Net sales	(10,839)	(3,332)	(31,483)	(7,903)
Intersegment Eliminations | Infiltrator
Segment Reporting Information [Line Items]
Net sales	(14,961)	(26,314)	(66,317)	(67,763)
Intersegment Eliminations | International
Segment Reporting Information [Line Items]
Net sales	(5,311)	(5,700)	(18,509)	(13,784)
Intersegment Eliminations | International | International - Pipe
Segment Reporting Information [Line Items]
Net sales	(5,311)	(5,700)	(18,509)	(13,784)
Intersegment Eliminations | Allied Products & Other
Segment Reporting Information [Line Items]
Net sales	$ (1,337)	$ (1,320)	$ (6,690)	$ (4,324)

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Business Segments Information - Reconciliation of Gross Profit to Segment Adjusted Gross Profit (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross profit	$ 223,917	$ 208,977	$ 895,987	$ 610,155
Total Segment Adjusted Gross Profit	245,233	238,593	959,837	692,655
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and Amortization	20,573	18,042	61,675	52,824
ESOP and stock-based compensation expense	$ 743	$ 11,574	$ 2,175	$ 29,676

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Subsequent Events (Detail) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 02, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Subsequent Event [Line Items]
Common stock dividends per share (in dollars per share)		$ 0.12	$ 0.11	$ 0.36	$ 0.33
Share repurchases (in shares)		1.9		3.8
Stock repurchased during period		$ 179,864		$ 375,027	$ 292,000
Subsequent Event
Subsequent Event [Line Items]
Common stock dividends per share (in dollars per share)	$ 0.12