SEC Form 4 · accession 0001688289-26-000018
MATERION Corp · MTRN
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Shelly Marie Chadwick
Officer — Vice President, Finance & CFO
Period of report
Aug 7, 2026
Accepted (ET)
Aug 11, 2026 · 4:50 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001104657
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Aug 7, 2026 | M | 2,800 | $135.58 | A | 18,046 | D | |
| Common Stock | Aug 7, 2026 | M | 2,172 | $87.36 | A | 20,218 | D | |
| Common Stock | Aug 7, 2026 | F | 3,267 | $293.40 | D | 16,951 | D | |
| Common Stock | Aug 7, 2026 | S | 1,705 | $293.00 | D | 15,246 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Appreciation RightsF1 | $135.58 | Aug 7, 2026 | M | 2,800 | D | — | Mar 1, 2031 | Common Stock | 2,800 | 1,400 | D |
| Stock Appreciation RightsF2 | $87.36 | Aug 7, 2026 | M | 2,172 | D | — | Mar 1, 2032 | Common Stock | 2,172 | 4,345 | D |
Explanation of responses
- F1The Stock Appreciation Rights vest in three substantially equal annual installments beginning March 1, 2025.
- F2The Stock Appreciation Rights vest in three substantially equal annual installments beginning March 1, 2026.