GOODWILL AND INTANGIBLE ASSETS
Goodwill - The carrying amount of goodwill by reportable segment is as follows:
As Previously Reported
(Amounts in thousands)PipeInfiltrator International 
Allied Products
& Other
StormwaterWastewater Total
Balance at March 31, 2024
$65,766 $495,841 $10,441 $45,135 $ $ $617,183 
Acquisition— 103,676 — — — — 103,676 
Currency translation— — (636)— — — (636)
Balance at March 31, 2025
65,766 599,517 9,805 45,135   720,223 
Reallocation due to change in segments(65,766)(599,517)(9,805)(45,135)120,706 599,517 — 
Acquisitions— — — — 321,612 555 322,167 
Currency translation— — — — 326 — 326 
Balance at March 31, 2026
$ $ $ $ $442,644 $600,072 $1,042,716 
Intangible Assets - Intangible assets as of March 31, 2026 and 2025 consisted of the following:
 2026 2025
(Amounts in thousands)
Gross
Intangible
 Accumulated
Amortization
 
Net
Intangible
 
Gross
Intangible
 
Accumulated
Amortization
 
Net
Intangible
Definite-lived intangible assets           
Developed technology$213,120 $(113,493)$99,627 $212,200 $(93,783)$118,417 
Supplier and customer relationships902,700 (255,237)647,463 481,100 (220,047)261,053 
Patents and non-compete agreements3,738 (3,035)703 3,738 (2,687)1,051 
Trademarks and tradenames112,330 (23,439)88,891 74,960 (19,260)55,700 
Total definite lived intangible assets1,231,888 (395,204)836,684 771,998 (335,777)436,221 
Indefinite-lived intangible assets (a)
Trademarks11,843 — 11,843 11,839 — 11,839 
Total Intangible assets$1,243,731 $(395,204)$848,527 $783,837 $(335,777)$448,060 
(a)Indefinite-lived intangible assets may fluctuate as a result of foreign currency translation.
The following table presents the amortization expense and weighted average amortization period for definite-lived intangible assets at March 31, 2026:
 Amortization expense (in thousands) 
 Weighted Average
Amortization Period
(in years)
 202620252024 
Developed technology$19,710 $18,230 $16,480 7.0
Supplier and customer relationships35,187 30,207 30,460 15.9
Patents and non-compete agreements348 487 560 6.3
Trademarks and tradenames4,179 3,645 3,969 16.3
Total$59,424 $52,569 $51,469 
Future intangible asset amortization expense based on existing intangible assets at March 31, 2026 is:
 Fiscal Year    
(Amounts in thousands)2027 2028 2029 2030 2031 Thereafter Total
Amortization expense$80,233 $84,640 $87,849 $73,341 $64,366 $446,255 $836,684 
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Historical Timeline

Fiscal YearFiled
2026May 21, 2026Showing above
2025May 15, 2025
2024May 16, 2024
2023May 18, 2023
2022May 19, 2022
2021May 27, 2021
2020Jun 1, 2020
2019May 30, 2019
2018May 30, 2018
2017May 30, 2017
2016Sep 15, 2016
2015Mar 29, 2016

About Goodwill & Intangibles Disclosures

Goodwill and intangible asset disclosures reveal the premium paid in acquisitions and how management assesses whether that premium retains its value. Since goodwill is no longer amortized under US GAAP, the annual impairment test is the only mechanism that adjusts carrying values downward — making the assumptions behind that test critically important for investors.

Key signals: a history of goodwill impairments suggests management consistently overpays for acquisitions. Watch the gap between reporting unit fair value and carrying amount — when fair value exceeds carrying amount by less than 10-20%, a small decline in business performance could trigger a write-down. For finite-lived intangibles, examine useful life assumptions across customer relationships, technology, and trade names; aggressive estimates inflate near-term earnings. Compare total intangibles-to-total-assets ratios against peers to assess acquisition dependency. Rising goodwill as a percentage of equity can signal balance sheet fragility.