Custom Truck One Source, Inc.·4

Apr 2, 4:30 PM ET

EIN MARK 4

4 · Custom Truck One Source, Inc. · Filed Apr 2, 2026

Research Summary

AI-generated summary of this filing

Updated

Custom Truck One Source (CTOS) Director Mark Ein Exercises RSUs

What Happened

  • Director Mark Ein recorded a conversion/exercise of 26,859 restricted stock units (RSUs) on March 31, 2026 (transaction code M) at $0.00 and an equal disposition of 26,859 derivative shares the same day. On April 1, 2026 he was granted 19,225 additional RSUs (transaction code A) at $0.00. All amounts are recorded at $0 cash consideration because these were equity award vesting/conversion events rather than open-market purchases or sales.

Key Details

  • Transaction dates and prices:
    • 2026-03-31: 26,859 RSUs converted/exercised (M) at $0.00 (acquired).
    • 2026-03-31: 26,859 derivative shares disposed (M) at $0.00 (same day).
    • 2026-04-01: 19,225 RSUs granted (A) at $0.00 (acquired).
  • Shares owned after transaction: The filing does not state total common shares owned after these events. The reported activity results in the conversion/settlement of vested RSUs and a new grant of 19,225 RSUs that will become shares if/when they vest.
  • Footnotes of note:
    • F1: Each RSU represents a contingent right to one share.
    • F2: The RSUs that converted vested in full on March 31, 2026.
    • F3: The newly granted RSUs vest on March 31, 2027 and have no expiration date.
  • Timeliness: The Form 4 was filed April 2, 2026 for transactions on March 31–April 1, which is within the standard two-business-day filing window.

Context

  • These transactions are award/vesting events, not purchases or open-market sales. The equal number of shares disposed the same day as the conversion is commonly recorded to reflect share withholding to satisfy tax obligations upon vesting (the filing lists the disposition but shows no cash value). The new RSUs are time-based awards that vest next year (3/31/2027) and are not immediately tradable shares.

Insider Transaction Report

Form 4
Period: 2026-03-31
EIN MARK
Director
Transactions
  • Exercise/Conversion

    Common Stock

    [F1]
    2026-03-31+26,8595,166,178 total
  • Exercise/Conversion

    Restricted Stock Unit

    [F1][F2]
    2026-03-3126,8590 total
    Common Stock (26,859 underlying)
  • Award

    Restricted Stock Unit

    [F1][F3]
    2026-04-01+19,22519,225 total
    Common Stock (19,225 underlying)
Footnotes (3)
  • [F1]Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
  • [F2]The restricted stock units vested in full on March 31, 2026.
  • [F3]The restricted stock units will vest on March 31, 2027 and have no expiration date.
Signature
By: /s/ Paul M. Jolas, Attorney-in-fact|2026-04-02

Documents

1 file
  • 4
    ownership.xmlPrimary