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person · Reporting owner

Ross Fredrick M. Jr.

Disclosed activity across 1 company

Tapewire entity
53867
SEC CIK
0001851369

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Custom Truck One Source, Inc.CTOS · Entity 4503DirectorApril 01, 2026April 03, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Custom Truck One Source, Inc.

Report date April 01, 2026 · Filed April 03, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect540,188 Ending reported balance After 2026-04-01 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-04-01 · Exercise / conversion · Acquired 131,250 · Balance 579,629

F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Row 2 · 2026-04-01 · Tax withholding · Disposed 39,441 · Balance 540,188

F2: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Restricted Stock UnitSEC Table II · derivative / convertible securityDirect87,500 Reported balance After 2026-04-01 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2026-04-01 · Exercise / conversion · Disposed 87,500 · Balance 87,500

F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Restricted Stock UnitSEC Table II · derivative / convertible securityDirect131,250 Reported balance After 2026-04-01 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2026-04-01 · Exercise / conversion · Disposed 43,750 · Balance 131,250

F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F4: The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

Restricted Stock UnitSEC Table II · derivative / convertible securityDirect175,000 Reported balance After 2026-04-01 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2026-04-01 · Grant · Acquired 175,000 · Balance 175,000

F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F5: 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.

Common StockSEC Table I · non-derivativeIndirectBy Frederick M. Ross, Jr. Holding Company, LLC2,000,000 Reported balance Holding disclosure · report date 2026-04-01 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 2,000,000

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

F3: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

F4: The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

F5: 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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
April 01, 2026 Filed Apr 3, 2026 22:07 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantRestricted Stock Unit · Derivative 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-26-040059 · ownership.xml · derivative · entry 6

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 175,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F5 · derivative.exercise_date: 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.

F5 · derivative.expiration_date: 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.

Read SEC document
April 01, 2026 Filed Apr 3, 2026 22:07 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionRestricted Stock Unit · Derivative 43,750 $0.00 $0.00
Disclosure

SEC source: 0001213900-26-040059 · ownership.xml · derivative · entry 5

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,250

Underlying: Common Stock · 43,750 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F4 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

F4 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2026.

Read SEC document
April 01, 2026 Filed Apr 3, 2026 22:07 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionRestricted Stock Unit · Derivative 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-26-040059 · ownership.xml · derivative · entry 4

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,500

Underlying: Common Stock · 87,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

F3 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Read SEC document
April 01, 2026 Filed Apr 3, 2026 22:07 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 39,441 $6.62 $261,099.42
Disclosure

SEC source: 0001213900-26-040059 · ownership.xml · nonDerivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 540,188

F2 · shares: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Read SEC document
April 01, 2026 Filed Apr 3, 2026 22:07 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionCommon Stock 131,250 $0.00 $0.00
Disclosure

SEC source: 0001213900-26-040059 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 579,629

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
February 23, 2026 Filed Mar 26, 2026 20:30 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantCommon Stock 43,392 $0.00 $0.00
Disclosure

SEC source: 0001213900-26-034747 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 448,379

F1 · shares: 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.

Read SEC document
April 28, 2025 Filed Apr 30, 2025 23:10 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantRestricted Stock Unit · Derivative 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-037886 · ownership.xml · derivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 175,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2026, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.

F2 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2026, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 20:15 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionRestricted Stock Unit · Derivative 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-028631 · ownership.xml · derivative · entry 5

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 87,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F4 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

F4 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 20:15 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionRestricted Stock Unit · Derivative 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-028631 · ownership.xml · derivative · entry 4

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 87,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

F3 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 20:15 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 52,588 $4.20 $220,869.60
Disclosure

SEC source: 0001213900-25-028631 · ownership.xml · nonDerivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 404,987

F2 · shares: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 20:15 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionCommon Stock 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-028631 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 457,575

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
December 31, 2024 Filed Jan 3, 2025 22:34 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionPerformance Stock Unit · Derivative 15,794 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-000857 · ownership.xml · derivative · entry 5

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,806

Underlying: Common Stock · 15,794 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

Read SEC document
December 31, 2024 Filed Jan 3, 2025 22:34 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionPerformance Stock Unit · Derivative 15,794 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-000857 · ownership.xml · derivative · entry 4

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,806

Underlying: Common Stock · 15,794 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

Read SEC document
December 31, 2024 Filed Jan 3, 2025 22:34 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 28,526 $4.81 $137,210.06
Disclosure

SEC source: 0001213900-25-000857 · ownership.xml · nonDerivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 282,575

F2 · shares: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's performance stock units.

Read SEC document
December 31, 2024 Filed Jan 3, 2025 22:34 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionCommon Stock 31,588 $0.00 $0.00
Disclosure

SEC source: 0001213900-25-000857 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 311,101

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
April 01, 2024 Filed Apr 3, 2024 20:38 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionRestricted Stock Unit · Derivative 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-24-029853 · ownership.xml · derivative · entry 5

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 262,500

Underlying: Common Stock · 87,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F4 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

F4 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

Read SEC document
April 01, 2024 Filed Apr 3, 2024 20:38 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionRestricted Stock Unit · Derivative 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-24-029853 · ownership.xml · derivative · entry 4

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,500

Underlying: Common Stock · 87,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

F3 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

Read SEC document
April 01, 2024 Filed Apr 3, 2024 20:38 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 77,264 $5.88 $454,312.32
Disclosure

SEC source: 0001213900-24-029853 · ownership.xml · nonDerivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 279,513

F2 · shares: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.

Read SEC document
April 01, 2024 Filed Apr 3, 2024 20:38 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionCommon Stock 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-24-029853 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 356,777

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
February 27, 2024 Filed Mar 26, 2024 20:15 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantCommon Stock 31,588 $0.00 $0.00
Disclosure

SEC source: 0001213900-24-026055 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,777

F1 · shares: Represents an award of performance stock units originally granted to the reporting person on March 7, 2023. On February 27, 2024, the compensation committee of the Issuer's board of directors certified the performance level applicable to the performance stock units, resulting in the satisfaction of the performance vesting condition with respect to the shares reported herein. Such shares remain subject to a time-based vesting condition, which will be satisfied on December 31, 2024.

Read SEC document
December 31, 2023 Filed Jan 3, 2024 22:20 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionPerformance Stock Unit · Derivative 14,525 $0.00 $0.00
Disclosure

SEC source: 0001213900-24-000875 · ownership.xml · derivative · entry 5

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 138,600

Underlying: Common Stock · 14,525 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

Read SEC document
December 31, 2023 Filed Jan 3, 2024 22:20 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionPerformance Stock Unit · Derivative 14,525 $0.00 $0.00
Disclosure

SEC source: 0001213900-24-000875 · ownership.xml · derivative · entry 4

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 138,600

Underlying: Common Stock · 14,525 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

Read SEC document
December 31, 2023 Filed Jan 3, 2024 22:20 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 12,911 $6.18 $79,789.98
Disclosure

SEC source: 0001213900-24-000875 · ownership.xml · nonDerivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,189

F2 · shares: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's performance stock units.

Read SEC document
December 31, 2023 Filed Jan 3, 2024 22:20 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionCommon Stock 29,050 $0.00 $0.00
Disclosure

SEC source: 0001213900-24-000875 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,100

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
April 01, 2023 Filed Apr 5, 2023 00:20 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionRestricted Stock Unit · Derivative 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-23-027273 · ownership.xml · derivative · entry 4

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 87,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

F3 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

Read SEC document
April 01, 2023 Filed Apr 5, 2023 00:20 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 38,772 $6.79 $263,261.88
Disclosure

SEC source: 0001213900-23-027273 · ownership.xml · nonDerivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 134,050

F2 · shares: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's performance stock units.

Read SEC document
April 01, 2023 Filed Apr 5, 2023 00:20 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionCommon Stock 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-23-027273 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 172,822

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
December 31, 2022 Filed Mar 10, 2023 00:50 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionPerformance Stock Unit · Derivative 21,875 $0.00 $0.00
Disclosure

SEC source: 0001213900-23-018950 · ownership.xml · derivative · entry 5

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 153,125

Underlying: Common Stock · 21,875 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

Read SEC document
December 31, 2022 Filed Mar 10, 2023 00:50 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionPerformance Stock Unit · Derivative 21,875 $0.00 $0.00
Disclosure

SEC source: 0001213900-23-018950 · ownership.xml · derivative · entry 4

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 153,125

Underlying: Common Stock · 21,875 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest based on the attainment of certain performance conditions.

Read SEC document
December 31, 2022 Filed Mar 10, 2023 00:50 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 19,108 $6.32 $120,762.56
Disclosure

SEC source: 0001213900-23-018950 · ownership.xml · nonDerivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,322

F2 · shares: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's performance stock units.

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December 31, 2022 Filed Mar 10, 2023 00:50 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionCommon Stock 43,750 $0.00 $0.00
Disclosure

SEC source: 0001213900-23-018950 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 104,430

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock.

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August 02, 2022 Filed Aug 4, 2022 21:05 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantPerformance Stock Unit · Derivative 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-22-044810 · ownership.xml · derivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 175,000 shares

Expires not disclosed

F3 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the applicable performance period.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the applicable performance period.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the applicable performance period.

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August 02, 2022 Filed Aug 4, 2022 21:05 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantRestricted Stock Unit · Derivative 350,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-22-044810 · ownership.xml · derivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 350,000

Underlying: Common Stock · 350,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

F2 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2024.

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April 01, 2022 Filed Apr 6, 2022 00:11 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionRestricted Stock Unit · Derivative 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-22-018279 · ownership.xml · derivative · entry 4

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 262,500

Underlying: Common Stock · 87,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

F2 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

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April 01, 2022 Filed Apr 6, 2022 00:11 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 27,602 $8.34 $230,200.68
Disclosure

SEC source: 0001213900-22-018279 · ownership.xml · nonDerivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,898

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April 01, 2022 Filed Apr 6, 2022 00:11 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 Exercise / conversionCommon Stock 87,500 $0.00 $0.00
Disclosure

SEC source: 0001213900-22-018279 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,500

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

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April 01, 2022 Filed May 13, 2022 20:55 UTC Amendment Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 26,820 $8.34 $223,678.80
Disclosure

SEC source: 0001213900-22-026531 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,680

F1 · shares: The Form 4 originally filed on behalf of the Reporting Person on April 5, 2022 inadvertently overstated the number of shares withheld by the Issuer in connection with the vesting event reported therein. This amendment is being filed to correct the number of shares withheld and the total number of shares directly held by the Reporting Person following such withholding.

F1 · balance_after: The Form 4 originally filed on behalf of the Reporting Person on April 5, 2022 inadvertently overstated the number of shares withheld by the Issuer in connection with the vesting event reported therein. This amendment is being filed to correct the number of shares withheld and the total number of shares directly held by the Reporting Person following such withholding.

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April 01, 2022 Filed May 13, 2022 20:54 UTC Amendment Custom Truck One Source, Inc. CTOS · Entity 4503 Tax withholdingCommon Stock 26,820 $8.34 $223,678.80
Disclosure

SEC source: 0001213900-22-026528 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,680

F1 · shares: The Form 4 originally filed on behalf of the Reporting Person on April 5, 2022 inadvertently overstated the number of shares withheld by the Issuer in connection with the vesting event reported therein. This amendment is being filed to correct the number of shares withheld and the total number of shares directly held by the Reporting Person following such withholding.

F1 · balance_after: The Form 4 originally filed on behalf of the Reporting Person on April 5, 2022 inadvertently overstated the number of shares withheld by the Issuer in connection with the vesting event reported therein. This amendment is being filed to correct the number of shares withheld and the total number of shares directly held by the Reporting Person following such withholding.

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July 08, 2021 Filed Jul 12, 2021 20:31 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantPerformance Stock Unit · Derivative 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-21-036540 · ownership.xml · derivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 175,000 shares

Expires not disclosed

F3 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the performance period ending December 31, 2024.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the performance period ending December 31, 2024.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the performance period ending December 31, 2024.

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July 08, 2021 Filed Jul 12, 2021 20:31 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantRestricted Stock Unit · Derivative 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-21-036540 · ownership.xml · derivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 175,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

F2 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

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May 27, 2021 Filed May 27, 2021 22:36 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantPerformance Stock Unit · Derivative 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-21-029705 · ownership.xml · derivative · entry 2

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 175,000 shares

Expires not disclosed

F3 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the performance period ending December 31, 2024.

F3 · derivative.exercise_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the performance period ending December 31, 2024.

F3 · derivative.expiration_date: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock. The performance stock units will vest if the volume weighted average price per share of the Issuer's common stock achieves certain thresholds over the performance period ending December 31, 2024.

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May 27, 2021 Filed May 27, 2021 22:36 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 GrantRestricted Stock Unit · Derivative 175,000 $0.00 $0.00
Disclosure

SEC source: 0001213900-21-029705 · ownership.xml · derivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 175,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2 · derivative.exercise_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

F2 · derivative.expiration_date: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.

Read SEC document
April 01, 2021 Filed Apr 6, 2021 00:22 UTC Custom Truck One Source, Inc. CTOS · Entity 4503 OtherCommon Stock 2,000,000 $5.00 $10,000,000.00
Disclosure

SEC source: 0001213900-21-020239 · ownership.xml · nonDerivative · entry 1

Ross Fredrick M. Jr. · CIK 0001851369 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 2,000,000

F1 · kind: In connection with the acquisition of Custom Truck One Source, L.P. ("Custom Truck") by the Issuer, the reporting person received shares of the Issuer's Common Stock in exchange for a portion of their Custom Truck equity interests with a value equal to the product of (x) $5.00 multiplied by (y) the number of shares of Common Stock received.

F2 · ownership.nature: Represents securities held by the Frederick M. Ross, Jr. Holding Company, LLC.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.