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v3.26.1

Schedule of Assumptions and Results for the Monte Carlo Simulation for the Market-based Shares (Details) $ / shares in Units, $ in Thousands | 6 Months Ended
--- | ---
Mar. 29, 2026 USD ($) $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Performance period start | Dec. 18, 2025 |
Performance period end | Sep. 30, 2030 |
Time steps in simulation | 1,205 |
Time steps per year | 252 |
Common share price at valuation date | $ 13.60 | [1]
Dividend yield | 0.00% | [2]
Volatility (annual) | 52.50% | [3]
Risk-free rate (annual) | 3.64% | [4]
Cost of equity | 12.00% | [5]
Share-Based Payment Arrangement, Tranche One [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of performance shares in the tranche | shares | 13,500 | [6]
Fair value of one performance share | $ 12.08 | [7]
Total fair value of tranche | $ | $ 163,051 |
Derived service period | 7 months 28 days | [7]
Share-Based Payment Arrangement, Tranche Two [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of performance shares in the tranche | shares | 13,500 | [6]
Fair value of one performance share | $ 11.16 | [7]
Total fair value of tranche | $ | $ 150,633 |
Derived service period | 1 year 1 month 13 days | [7]
Share-Based Payment Arrangement, Tranche Three [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of performance shares in the tranche | shares | 13,500 | [6]
Fair value of one performance share | $ 10.12 | [7]
Total fair value of tranche | $ | $ 136,669 |
Derived service period | 1 year 6 months 29 days | [7]
Share Based Compensation Award Tranche Four [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of performance shares in the tranche | shares | 13,500 | [6]
Fair value of one performance share | $ 9.02 | [7]
Total fair value of tranche | $ | $ 121,713 |
Derived service period | 2 years 3 days | [7]
Share Based Compensation Award Tranche Five [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of performance shares in the tranche | shares | 13,500 | [6]
Fair value of one performance share | $ 7.90 | [7]
Total fair value of tranche | $ | $ 106,662 |
Derived service period | 2 years 4 months 13 days | [7]
[1] | Closing price of OPXS shares on the Valuation Date, as obtained via S&P Capital IQ.
[2] | Expected dividends provided by management.
[3] | Based on historical volatility of OPXS and comparable public companies.
[4] | Interest rate for US Treasury commensurate with the market-based shares holding period, as of the Valuation Date, as obtained via S&P Capital IQ.
[5] | Estimated cost of equity for OPXS as of the Valuation Date.
[6] | Based on the terms of the Market-Based shares agreement issued by the Company on December 18, 2025 and effective December 18, 2025.
[7] | Based on Monte Carlo simulation.

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