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FAIR VALUE MEASUREMENTS
 9 Months Ended
Jul. 31, 2026
Fair Value Disclosures [Abstract]  
Fair Value Disclosures [Text Block] FAIR VALUE MEASUREMENTS
The Company's assets and liabilities that were measured at fair value on a recurring basis are set forth by level within the fair value hierarchy in the following tables (in thousands):
As of July 31, 2026
Quoted Prices
in Active Markets for Identical Assets (Level 1)		Significant
Other Observable Inputs
(Level 2)		Significant Unobservable Inputs
(Level 3)		Total
Assets:
Deferred compensation plan:
Corporate-owned life insurance$— $406,887 $— $406,887 
Money market fund2,278 — — 2,278 
Total assets$2,278 $406,887 $— $409,165 
Liabilities:
Contingent consideration $— $— $69,097 $69,097 
As of October 31, 2025
Quoted Prices
in Active Markets for Identical Assets (Level 1)		Significant
Other Observable Inputs
(Level 2)		Significant Unobservable Inputs
(Level 3)		Total
Assets:
Deferred compensation plan:
Corporate-owned life insurance$— $378,930 $— $378,930 
Money market fund11,940 — — 11,940 
Total assets$11,940 $378,930 $— $390,870 
Liabilities:
Contingent consideration$— $— $46,198 $46,198 

The Company maintains the HEICO Corporation Leadership Compensation Plan (the "LCP"), which is a non-qualified deferred compensation plan. The assets of the LCP principally represent cash surrender values of life insurance policies, which derive their fair values from investments in mutual funds that are managed by an insurance company, and are classified within Level 2 and valued using a market approach. Certain other assets of the LCP represent an investment in a money market fund that is classified within Level 1. The assets of the LCP are held within an irrevocable trust and classified within other assets in the Company’s Condensed Consolidated Balance Sheets. The related liabilities of the LCP are included within other long-
term liabilities and accrued expenses and other current liabilities in the Company’s Condensed Consolidated Balance Sheets and have an aggregate value of $401.2 million as of July 31, 2026 and $385.7 million as of October 31, 2025.

As part of the agreement to acquire the remaining ownership interests of a subsidiary by the ETG in fiscal 2026, which was accounted for as an equity transaction, the Company may be obligated to pay contingent consideration of up to $20.0 million in the aggregate during fiscal years 2027 through 2029 based on the entity's financial and operational performance during the three-year period following the transaction. As of July 31, 2026, the estimated fair value of the contingent consideration was $12.2 million. See Note 9, Shareholders' Equity, for additional information.

As part of the agreement to acquire 90% of the stock of a subsidiary by the ETG in fiscal 2026, the Company may be obligated to pay contingent consideration of up to $4.1 million in fiscal 2030 based on the earnings of the acquired entity during fiscal years 2028 and 2029. As of July 31, 2026, the estimated fair value of the contingent consideration was $2.7 million.

As part of the agreement to acquire 90% of the membership interests of a subsidiary by the FSG in fiscal 2025, the Company may be obligated to pay contingent consideration of up to $21.1 million in fiscal 2028 based on the earnings of the acquired entity during the three-year period following the acquisition provided the entity meets a certain earnings objective over the same three-year period. As of July 31, 2026, the estimated fair value of the contingent consideration was $15.9 million.

As part of the agreement to acquire 96% of the stock of a subsidiary by the FSG in fiscal 2022, the Company may be obligated to pay contingent consideration of up to $27.4 million in fiscal 2027 based on the earnings of the acquired entity during fiscal years 2025 and 2026. As of July 31, 2026, the estimated fair value of the contingent consideration was $24.7 million.

As part of the agreement to acquire 74% of the membership interests of a subsidiary by the FSG in fiscal 2022, the Company may be obligated to pay contingent consideration of $14.1 million in fiscal 2027 should the acquired entity meet a certain earnings objective during the five-year period following the acquisition. As of July 31, 2026, the estimated fair value of the contingent consideration was $13.6 million.

The estimated fair values of the contingent consideration arrangements described above are classified within Level 3 and were determined using a probability-based scenario analysis approach. Under this method, a set of discrete potential future subsidiary earnings was determined using internal estimates based on various revenue growth rate assumptions for each scenario. A probability of likelihood was assigned to each discrete potential future earnings estimate and the resultant contingent consideration was calculated. The resulting probability-weighted contingent consideration amounts were discounted using a weighted average discount rate reflecting the credit risk of a market participant. Changes in either the revenue growth rates, related earnings or the discount rate could result in a material change to the amount of contingent
consideration accrued and such changes will be recorded in the Company's consolidated statements of operations.

The following unobservable inputs were used to derive the estimated fair value of the Company's Level 3 contingent consideration liabilities as of July 31, 2026:
AcquisitionFair ValueUnobservableWeighted
Date(in thousands)InputRange
Average (1)
6-30-2026$12,231Compound annual revenue growth rate
12% - 43%
35%
Discount rate
9.1% - 9.2%
9.1%
4-8-20262,736Compound annual revenue growth rate
0% - 10%
7%
Discount rate
8.2% - 8.2%
8.2%
1-31-202515,856Compound annual revenue growth rate
(1%) - 19%
11%
Discount rate
6.7% - 6.7%
6.7%
7-18-202224,683Compound annual revenue growth rate
6% - 9%
7%
Discount rate
6.8% - 6.8%
6.8%
3-17-202213,591Compound annual revenue growth rate
10% - 11%
11%
Discount rate
5.1% - 5.1%
5.1%
(1)    Unobservable inputs were weighted by the relative fair value of the contingent consideration liability.
Changes in the Company’s contingent consideration liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3) for the nine months ended July 31, 2026 are as follows (in thousands):
Liabilities
Balance as of October 31, 2025$46,198 
Contingent consideration related to the acquisition of noncontrolling interests12,183 
Increase in accrued contingent consideration8,021 
Contingent consideration related to an acquisition2,695 
Balance as of July 31, 2026$69,097 
Included in the accompanying Condensed Consolidated Balance Sheet
 under the following captions:
Accrued expenses and other current liabilities$40,102 
Other long-term liabilities28,995 
$69,097 

The Company records changes in accrued contingent consideration associated with business combinations within SG&A expenses in its Condensed Consolidated Statements of Operations. Changes in contingent consideration associated with acquisitions of noncontrolling interests that are accounted for as equity transactions are recognized as adjustments to capital in excess of par value.

The carrying amounts of the Company’s cash and cash equivalents, accounts receivable, trade accounts payable and accrued expenses and other current liabilities approximate fair value as of July 31, 2026 due to the relatively short maturity of the respective instruments. The carrying amount of borrowings under the Company's Credit Facility approximates fair value due to its variable interest rate. See Note 5, Long-Term Debt, for the estimated fair value of the Company’s senior unsecured notes.