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Livermore
Livermore
ZHEN

Custom Truck One Source, Inc.

CTOS
Exchange
NYSE
Industry
Services-Equipment Rental & Leasing, NEC
SEC CIK
0001709682

No open-market purchases or sales by Custom Truck One Source, Inc. insiders were filed in the last 90 days; 186 institutions reported holding it in 13F filings for Q2 2026, worth $2.63B in total; no superinvestor holds it.

Holders of 5% or more of CTOS

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Custom Truck One Source, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of CTOS
HolderLatest formStakeChangeFirst filedLatest filingFiling
Platinum Equity, LLC13D/A69.60%156.7M shares–Feb 3, 20251 filingFeb 3, 2025SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

6 Schedule 13D and 13G filings on Custom Truck One Source, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on CTOS
Filed (ET)FilerFormStakeChangeEvent dateFiling
Oct 21, 20254:30 PM ETEin Markand 3 others13D/A2.30%5.16M shares–Below 5%Oct 17, 2025SEC
Feb 3, 20257:13 PM ETPlatinum Equity, LLCand 11 others13D/A69.60%156.7M shares–Jan 30, 2025SEC
Feb 3, 20255:00 PM ETECP ControlCo, LLCand 14 others13D/A0.00%0 shares−7.00 ppfrom 7.00%Below 5%Jan 30, 2025SEC
Dec 23, 20248:20 PM ETECP ControlCo, LLCand 14 others13D/A7.00%16.3M shares–Dec 19, 2024SEC
Feb 16, 2021Alyeska Investment Group, L.P.13G/AOld format–––SEC
Feb 8, 2021Brown Advisory Inc13G/AOld format–––SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Custom Truck One Source, Inc. shares.

No Form 144 notices for Custom Truck One Source, Inc. are on file.