CTOS · Custom Truck One Source, Inc. · Insider Trading

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2023.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units will vest on March 31, 2027 and have no expiration date.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.

Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units will vest on March 31, 2027 and have no expiration date.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.

Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units will vest on March 31, 2027 and have no expiration date.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units will vest on March 31, 2027 and have no expiration date.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units will vest on March 31, 2027 and have no expiration date.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vested in full on March 31, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vested in full on March 31, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vested in full on March 31, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vested in full on March 31, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

The restricted stock units vested in full on March 31, 2026.

Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Represents an award of performance stock units ("PSUs") earned as a result of the achievement of performance criteria pursuant to PSU awards with a performance period that ended on December 31, 2025, as certified by the compensation committee of the Issuer's board of directors on February 23, 2026. Such shares remain subject to a time-based vesting condition, which will be satisfied on December 31, 2026.

Represents an award of performance stock units ("PSUs") earned as a result of the achievement of performance criteria pursuant to PSU awards with a performance period that ended on December 31, 2025, as certified by the compensation committee of the Issuer's board of directors on February 23, 2026. Such shares remain subject to a time-based vesting condition, which will be satisfied on December 31, 2026.

Represents an award of performance stock units ("PSUs") earned as a result of the achievement of performance criteria pursuant to PSU awards with a performance period that ended on December 31, 2025, as certified by the compensation committee of the Issuer's board of directors on February 23, 2026. Such shares remain subject to a time-based vesting condition, which will be satisfied on December 31, 2026.