Ross Fredrick M. Jr. 4

What Happened
Ross Fredrick M. Jr., a director of Custom Truck One Source, Inc. (CTOS), was granted 43,392 shares as an award of performance stock units (PSUs) on February 23, 2026. The Form 4 records the award at $0.00 per share (no cash paid); the filing shows an acquisition-type transaction (code A). The grant reflects PSUs earned for performance but the shares remain subject to a time-based vesting condition.

Key Details

• Transaction date: February 23, 2026 — Grant (Type A) of 43,392 shares at $0.00 (no cash exchanged).
• Report filed: March 26, 2026 (appears to be filed late; Form 4s are generally due within 2 business days of the transaction).
• Shares owned after transaction: Not specified in the Form 4 filing.
• Footnote: PSUs were earned based on achievement of performance criteria for the period ended December 31, 2025, certified by the compensation committee on Feb 23, 2026; these shares remain subject to a time-based vesting condition that will be satisfied on December 31, 2026.

Context
This was a compensation-driven grant (performance award), not an open-market purchase or sale. Such PSU awards are common for directors/executives and reflect prior performance metrics plus a continuing service requirement; they don’t necessarily indicate immediate insider sentiment because the shares are not yet freely transferable until vesting conditions are met. The late filing may warrant attention from investors tracking timely insider disclosures.