Chadwick Shelly Marie 4

What Happened
Chadwick Shelly Marie, Vice President, Finance & Chief Financial Officer of MATERION Corp (MTRN), received a total of 23 restricted stock units (RSUs) on March 6, 2026 (9 RSUs granted and 14 RSUs as derivative awards related to dividend reinvestment). On March 9, 2026, 6 shares were surrendered/withheld to satisfy tax withholding obligations at an effective value of $144.19 per share, totaling $865. The RSUs were granted at $0.00 per share (they represent rights to future shares rather than an immediate purchase).

Key Details

• Transactions reported for period ending March 6, 2026; filing date: March 10, 2026.
• Grants: 9 RSUs (A) and 14 derivative RSUs (A) were recorded on 2026-03-06 at $0.00 per share.
• Tax withholding: 6 shares surrendered (F) on 2026-03-09 at $144.19 per share, amounting to $865.
• Shares owned after the transaction: not specified in the Form 4 excerpt provided.
• Footnotes: F1 — each RSU equals a right to one share; F2 — the 14 derivative RSUs were from reinvested dividend equivalents and vest with the related RSUs; F3 — (not material here) expiration date equals date exercisable.
• No indication in this filing that the report was late.

Context
RSUs are compensation awards that convert to actual shares only when they vest; they are common executive compensation and do not necessarily signal buying or selling intent. The 6-share disposition was a routine tax-withholding action (surrendering shares to cover taxes), not an open-market sale. The dollar amounts involved here are small (withholding ~$865), so this filing primarily documents routine compensation administration rather than a market-moving insider trade.