Form 4 for MTRN MATERION Corp
Accepted 2026-03-03 00:00:00 ET · period of report 2026-03-01 · accession 0001688289-26-000010 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-03-03 | 2026-03-03 | MTRN | Chadwick Shelly Marie | VP, CFO, Fin | S - Sale+OE | $160.06 | -2,539 | 15.2K | -14% | -$406.4K |
| D | 2026-03-03 | 2026-03-02 | MTRN | Chadwick Shelly Marie | VP, CFO, Fin | F - Tax | $166.59 | -3,909 | 17.8K | -18% | -$651.2K |
| D | 2026-03-03 | 2026-03-01 | MTRN | Chadwick Shelly Marie | VP, CFO, Fin | M - OptEx | $0.00 | +5,552 | 21.7K | +34% | $0 |
| DM | 2026-03-03 | 2026-03-01 | MTRN | Chadwick Shelly Marie | VP, CFO, Fin | A - Grant | $0.00 | +9,088 | 12.5K | +268% | $0 |
| D | 2026-03-03 | 2026-03-01 | MTRN | Chadwick Shelly Marie | VP, CFO, Fin | M - OptEx | $0.00 | -5,552 | 8,886 | -38% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-03-03 | S | D | 1,039 | $157.26 | 16,743 | D | — | — | (F1) The reported sale of 1,039 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. |
| 2 | Common | Common Stock | 2026-03-02 | F | D | 3,909 | $166.59 | 17,782 | D | — | — | |
| 3 | Common | Common Stock | 2026-03-01 | M | A | 5,552 | $0.00 | 21,691 | D | — | — | |
| 4 | Common | Common Stock | 2026-03-03 | S | D | 1,500 | $162.00 | 15,243 | D | — | — | |
| 5 | Derivative | Stock Appreciation Rights | 2026-03-01 | A | A | 5,498 | $0.00 | 5,498 | D | $166.59 · — to 2033-03-01 | 5,498 Common Stock | (F6) These Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2027. |
| 6 | Derivative | Restricted Stock Units | 2026-03-01 | A | A | 3,590 | $0.00 | 12,476 | D | — · — to — | 3,590 Common Stock | (F2) Each restricted stock unit represents a right to receive one share of MTRN common stock. (F5) These restricted stock units vest in three equal annual installments beginning March 1, 2027. (F4) Expiration Date is the same as the Date Exercisable. |
| 7 | Derivative | Restricted Stock Units | 2026-03-01 | M | D | 5,552 | $0.00 | 8,886 | D | — · — to — | 5,552 Common Stock | (F2) Each restricted stock unit represents a right to receive one share of MTRN common stock. (F3) These restricted stock units granted on 03/01/2023, 03/01/2024, and 03/01/2025, and any related dividend equivalents, vest in three equal annual installments. (F4) Expiration Date is the same as the Date Exercisable. |