Rossmiller Gregory Scott 4

4 · SEACOR Marine Holdings Inc. · Filed Mar 2, 2026

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Updated Mar 2, 2026

SEACOR Marine (SMHI) SVP Gregory Scott Rossmiller Receives Awards

What Happened

Gregory Scott Rossmiller, SVP and CAO of SEACOR Marine Holdings, was granted two awards on Feb 27, 2026: 34,215 restricted shares (restricted stock award) and 16,420 Performance Restricted Stock Units (PRSUs). Both grants were reported at $0.00 per share (compensation awards), for a combined 50,635 units.

Key Details

Transaction date: February 27, 2026; reported on Form 4 filed March 2, 2026 (appears to be a timely filing).
Grant prices: $0.00 per share for both the restricted stock and the PRSUs.
Shares owned after transaction: not disclosed in this filing.
Vesting/settlement notes:
- Restricted stock (34,215 shares) will lapse (vest) in five equal annual installments beginning March 4, 2027 and ending March 4, 2031. (Footnote F1)
- PRSUs (16,420) are contingent rights to receive one share per PRSU only if both performance and service conditions are met. (Footnote F2)
- PRSUs are divided into five equal tranches, each earned only if the closing stock price meets the tranche threshold for 60 consecutive trading days during the three-year performance period after grant; tranche thresholds are $7.67, $8.52, $9.38, $10.23 and $11.08. Any earned PRSUs will not be settled until the third anniversary of the grant date and remain subject to service-based vesting. (Footnote F3)

Context

These are compensation awards (not open-market purchases or sales). The restricted stock provides time-based retention; the PRSUs are performance-based and will convert to shares only if specific stock-price hurdles and service requirements are met. The reported $0 grant price reflects that these are stock awards, not cash purchases; the eventual value to the insider depends on future stock performance and vesting/settlement conditions.

Form 4

Period: 2026-02-27

SVP & CAO

Transactions

Award
Common Stock
[F1]
2026-02-27+34,215→ 317,419 total
Award
Performance Restricted Stock Units
[F2][F3]
2026-02-27+16,420→ 16,420 total
→ Common Stock (16,420 underlying)

Footnotes (3)

[F1]The restricted stock award reported on this Form 4 will lapse in five equal annual installments beginning on March 4, 2027 and ending on March 4, 2031.
[F2]Each Performance Restricted Stock Unit (each, a "PRSU") represents a contingent right to receive, at vesting, one share of Common Stock subject to the achievement of certain performance goals and service-based vesting requirements.
[F3]These PRSUs consist of five equal tranches, each of which will be earned if and when the closing price of one share of Common Stock equals or exceeds the specified stock price performance goal for such tranche for 60 consecutive trading days during the three year performance period beginning on the grant date, provided that any earned PRSUs will not be settled until the third anniversary of the grant date, subject to satisfaction of the service-based vesting requirements set forth in the award agreement. The specified stock price performance goals for each tranche are $7.67, $8.52, $9.38, $10.23 and $11.08, respectively.

Signature

/s/ Andrew H. Everett II, Attorney-in-Fact|2026-03-02

1 file