Form 4 for MTRN MATERION Corp
Accepted 2026-03-03 00:00:00 ET · period of report 2026-03-01 · accession 0001519910-26-000008 · 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 | Chemnitz Gregory R. | VP GC, Sec | S - Sale+OE | $157.32 | -4,517 | 5,930 | -43% | -$710.6K |
| DM | 2026-03-03 | 2026-03-01+ | MTRN | Chemnitz Gregory R. | VP GC, Sec | M - OptEx | $84.01 | +7,531 | 10.6K | +247% | +$632.7K |
| DM | 2026-03-03 | 2026-03-02+ | MTRN | Chemnitz Gregory R. | VP GC, Sec | F - Tax | $159.26 | -5,656 | 10.4K | -35% | -$900.8K |
| DM | 2026-03-03 | 2026-03-01+ | MTRN | Chemnitz Gregory R. | VP GC, Sec | M - OptEx | $0.00 | -7,531 | 2,060 | -79% | $0 |
| DM | 2026-03-03 | 2026-03-01 | MTRN | Chemnitz Gregory R. | VP GC, Sec | A - Grant | $0.00 | +3,744 | 3,539 | New | $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 | 1,083 | $157.52 | 9,364 | D | — | — | |
| 2 | Common | Common Stock | 2026-03-03 | M | A | 1,017 | $87.36 | 14,892 | D | — | — | |
| 3 | Common | Common Stock | 2026-03-03 | S | D | 3,434 | $157.26 | 5,930 | D | — | — | |
| 4 | Common | Common Stock | 2026-03-03 | M | A | 1,471 | $135.58 | 13,875 | D | — | — | |
| 5 | Common | Common Stock | 2026-03-03 | M | A | 3,040 | $113.28 | 12,404 | D | — | — | |
| 6 | Common | Common Stock | 2026-03-02 | F | D | 1,211 | $166.59 | 9,364 | D | — | — | |
| 7 | Common | Common Stock | 2026-03-01 | M | A | 2,003 | $0.00 | 10,575 | D | — | — | |
| 8 | Common | Common Stock | 2026-03-03 | F | D | 4,445 | $157.26 | 10,447 | D | — | — | |
| 9 | Derivative | Stock Appreciation Rights | 2026-03-03 | M | D | 1,471 | $0.00 | 736 | D | $135.58 · — to 2031-03-01 | 1,471 Common Stock | (F7) These Stock Appreciation Rights vest in three equal installments beginning March 1, 2025. |
| 10 | Derivative | Stock Appreciation Rights | 2026-03-03 | M | D | 1,017 | $0.00 | 2,034 | D | $87.36 · — to 2032-03-01 | 1,017 Common Stock | (F8) These Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2026. |
| 11 | Derivative | Stock Appreciation Rights | 2026-03-03 | M | D | 3,040 | $0.00 | 0 | D | $113.28 · — to 2030-03-01 | 3,040 Common Stock | (F6) The Stock Appreciation Rights vested in three equal annual installments beginning March 1, 2024. |
| 12 | Derivative | Stock Appreciation Rights | 2026-03-01 | A | A | 2,265 | $0.00 | 2,265 | D | $166.59 · — to 2033-03-01 | 2,265 Common Stock | (F5) The Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2027. |
| 13 | Derivative | Restricted Stock Units | 2026-03-01 | A | A | 1,479 | $0.00 | 3,539 | D | — · — to — | 1,479 Common Stock | (F1) Each restricted stock unit represents a right to receive one share of MTRN common stock. (F4) These restricted stock units vest in three equal annual installments beginning March 1, 2027. (F3) Expiration Date is the same as the Date Exercisable. |
| 14 | Derivative | Restricted Stock Units | 2026-03-01 | M | D | 2,003 | $0.00 | 2,060 | D | — · — to — | 2,003 Common Stock | (F1) Each restricted stock unit represents a right to receive one share of MTRN common stock. (F2) 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. (F3) Expiration Date is the same as the Date Exercisable. |