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MAJOR CUSTOMERS

12 Months Ended

Sep. 30, 2025

MAJOR CUSTOMERS

MAJOR CUSTOMERS

22. MAJOR CUSTOMERS

The tables below present customers that represent 10.0% or more of the Company’s revenue or accounts receivable, net of retention as of or for the fiscal years ended September 30, 2025, and 2024:

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​	​	​	​	​	​
​	​ ​ ​	Twelve Months Ended	​ ​ ​	Twelve Months Ended
Revenue	​	September 30, 2025	​	September 30, 2024	​
TransCanada Corporation		*	​	10.4	%
All other		100.0	%	89.6	%
Total		100.0	%	100.0	%

* Less than 10.0% and included in “All other” if applicable

​	​	​	​	​	​
Accounts receivable, net of retention	​ ​ ​	at September 30, 2025	​ ​ ​	at September 30, 2024
TransCanada Corporation		13.9	%	*	​
All other		86.1	%	100.0	%
Total		86.1	%	100.0	%

* Less than 10.0% and included in “All other” if applicable

Virtually all work performed for major customers was awarded under competitive bid fixed price or unit price arrangements. The loss of a major customer could have a severe impact on the profitability of the operations of the Company. However, due to the nature of the Company’s operations, the major customers and sources of revenues may change from year to year.

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The entire disclosure for major customers. Major customers are those that the loss of such customers would have a material adverse effect on the entity.

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