GOODWILL AND OTHER INTANGIBLE ASSETS:
Goodwill
The changes in the carrying amount of goodwill of each of Quanta’s reportable segments were as follows (in thousands):
Electric
Segment
Underground and Infrastructure
Segment
Total
Balance at December 31, 2023 (1)
$3,371,687 $674,218 $4,045,905 
Goodwill related to acquisition completed in 20241,126,121 186,993 1,313,114 
Purchase price allocation adjustments(10,996)— (10,996)
Goodwill written off due to sale of business (1)
— (6,147)(6,147)
Foreign currency translation adjustments(13,725)(11,708)(25,433)
Balance at December 31, 2024 (1)
4,473,087843,3565,316,443
Goodwill related to the acquisitions completed in 2025645,725 1,332,171 1,977,896 
Purchase price allocation adjustments5,933 364 6,297 
Foreign currency translation adjustments8,951 7,641 16,592 
Balance at December 31, 2025 (1)
$5,133,696 $2,183,532 $7,317,228 
(1)    Included in the Underground and Infrastructure segment for the years ended December 31, 2025, 2024, and 2023 was accumulated impairment of $50.7 million, $49.9 million and $96.1 million. During the year ended December 31, 2024, $45.1 million of accumulated impairment was written off related to the Underground and Infrastructure segment due to the sale of a business.
In connection with the 2025, 2024 and 2023 annual goodwill assessments, management performed a qualitative impairment assessment of Quanta’s reporting units, which indicated that it was more likely than not that the fair value of its reporting units was greater than their carrying value including goodwill. Accordingly, a quantitative goodwill impairment test was not required, and no goodwill impairment was recognized in 2025, 2024 or 2023.
Other Intangible Assets
Quanta’s identifiable intangible assets and the remaining weighted average amortization periods related to its intangible assets subject to amortization were as follows (in thousands except for weighted average amortization periods, which are in years):
As of December 31, 2025As of December 31, 2024
Remaining Weighted Average Amortization Period in YearsIntangible
Assets
Accumulated
Amortization
Intangible
Assets, Net
Intangible
Assets
Accumulated
Amortization
Intangible
Assets, Net
Customer relationships5.7$3,523,939 $(1,464,107)$2,059,832 $2,405,606 $(1,105,099)$1,300,507 
Backlog1.6618,911 (454,847)164,064 442,459 (358,596)83,863 
Trade names12.9794,379 (156,085)638,294 569,307 (113,970)455,337 
Non-compete agreements4.591,781 (57,513)34,268 61,589 (51,453)10,136 
Patented rights, developed technology, process certifications and other12.535,413 (33,140)2,273 35,317 (32,763)2,554 
Curriculum3.216,691 (12,234)4,457 15,618 (10,478)5,140 
Total intangible assets subject to amortization7.15,081,114 (2,177,926)2,903,188 3,529,896 (1,672,359)1,857,537 
Engineering license3,000 — 3,000 3,000 — 3,000 
Other intangible assets, net$5,084,114 $(2,177,926)$2,906,188 $3,532,896 $(1,672,359)$1,860,537 
Amortization expense for intangible assets was $498.8 million, $383.0 million and $289.0 million for the years ended December 31, 2025, 2024 and 2023.
The estimated future aggregate amortization expense of intangible assets subject to amortization as of December 31, 2025 is set forth below (in thousands):
Year Ending December 31: 
2026$623,128 
2027541,168 
2028429,002 
2029274,067 
2030260,335 
Thereafter775,488 
Total$2,903,188 
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Historical Timeline

Fiscal YearFiled
2025Feb 19, 2026Showing above
2024Feb 20, 2025
2023Feb 22, 2024
2022Feb 23, 2023
2021Feb 25, 2022
2020Mar 1, 2021
2019Feb 28, 2020
2018Feb 28, 2019
2017Feb 28, 2018
2016Mar 1, 2017
2015Feb 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.