Orion S.A. — Director's Dealing 2026

Feb 23, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Orion S.A. (OEC)
CIK: 0001609804
Period of Report: 2026-02-19

Reporting Person: Niewiem Sandra (Sr. VP Global Specialties)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-19	Common Shares, no par value	F	2662	$6.27	Disposed	24255	Direct
2026-02-19	Common Shares, no par value	A	5952	—	Acquired	30207	Direct
2026-02-19	Common Shares, no par value	F	2827	$6.27	Disposed	27380	Direct

Footnotes

F1: Shares withheld by the Issuer to satisfy tax withholding requirements on vesting of restricted stock units.

F2: Represents the vesting and settlement of performance-based restricted stock units in shares of common stock following the satisfaction of certain performance criteria.

F3: Shares withheld by the Issuer to satisfy tax withholding requirements on vesting of performance-based restricted stock units.