WELTY LINDA J 4

What Happened

• Linda J. Welty, a director of Mercer International Inc. (MERC), received a grant of 25,000 deferred stock units (DSUs) on June 2, 2026. The transaction is recorded as an award/derivative (no cash purchase or open-market sale). No per-share price or immediate cash value is reported in the filing.

Key Details

• Transaction date: 2026-06-02 (Period of Report: 2026-06-02).
• Security/amount: 25,000 deferred stock units (DSUs) (derivative award; price listed as N/A).
• Vesting/payout: Each DSU vests on the earlier of the one-year anniversary of the grant or Mercer's 2027 annual general meeting (AGM) and represents the right to receive one share of common stock plus dividend equivalents after the director ceases to be a director, unless deferred per the plan (see footnote F1).
• Plan/authority: Granted under Mercer’s non-employee director compensation program and the Amended and Restated 2022 Stock Incentive Plan.
• Shares owned following transaction: Not reported in this filing.
• Timeliness: Filing covers the transaction date and was reported for the same period (no late-filing indication).

Context

• This is a standard non-employee director compensation award (deferred equity) rather than an open-market buy or sale; it does not reflect an immediate purchase or sale signal. DSUs are paid out later under plan terms and can include dividend equivalents, so economic exposure is deferred.