Rossmiller Gregory Scott 4

What Happened

• Gregory Scott Rossmiller, SVP & CAO of SEACOR Marine Holdings (SMHI), had one tranche of performance RSUs (PRSUs) vest and convert into 3,719 shares of common stock on 2026-03-07. To cover tax withholding, 1,464 of those shares were surrendered at $7.31 per share (total ~$10,702). Net shares retained by Rossmiller from this conversion: 2,255.

Key Details

• Transaction date: 2026-03-07; Form 4 filed: 2026-03-10 (appears timely).
• Award conversion: 3,719 shares issued from PRSUs (conversion = one-for-one per footnote).
• Tax withholding: 1,464 shares withheld at $7.31/share = $10,702.
• Net shares retained: 2,255.
• Footnotes: These shares came from a 3/7/2023 grant of 18,595 PRSUs in five price-based tranches; one tranche’s performance and service conditions were met by 3/7/26 and issued; the remaining PRSUs were forfeited.
• Transaction codes explained: M = conversion/exercise of a derivative award (PRSUs converting to common stock); F = shares withheld to satisfy tax liability.

Context

• This was not a market purchase or an open-market sale by the insider; it was the settlement of performance-based restricted stock units into shares, with routine withholding to cover taxes. Such conversions are common when defined performance and service conditions are met and do not by themselves indicate a buy/sell signal.