Chemnitz Gregory R. 4

4 · MATERION Corp · Filed Mar 3, 2026

Form 4

Period: 2026-03-01

VP General Counsel & Secretary

Transactions

Exercise/Conversion
Common Stock
2026-03-03$87.36/sh+1,017$88,845→ 14,892 total
Exercise/Conversion
Common Stock
2026-03-01+2,003→ 10,575 total
Tax Payment
Common Stock
2026-03-02$166.59/sh−1,211$201,740→ 9,364 total
Exercise/Conversion
Common Stock
2026-03-03$113.28/sh+3,040$344,371→ 12,404 total
Exercise/Conversion
Common Stock
2026-03-03$135.58/sh+1,471$199,438→ 13,875 total
Tax Payment
Common Stock
2026-03-03$157.26/sh−4,445$699,021→ 10,447 total
Sale
Common Stock
2026-03-03$157.51/sh−1,083$170,589→ 9,364 total
Sale
Common Stock
2026-03-03$157.26/sh−3,434$540,031→ 5,930 total
Exercise/Conversion
Restricted Stock Units
[F1][F2][F3]
2026-03-01−2,003→ 2,060 total
→ Common Stock (2,003 underlying)
Award
Restricted Stock Units
[F1][F4][F3]
2026-03-01+1,479→ 3,539 total
→ Common Stock (1,479 underlying)
Award
Stock Appreciation Rights
[F5]
2026-03-01+2,265→ 2,265 total
Exercise: $166.59Exp: 2033-03-01→ Common Stock (2,265 underlying)
Exercise/Conversion
Stock Appreciation Rights
[F6]
2026-03-03−3,040→ 0 total
Exercise: $113.28Exp: 2030-03-01→ Common Stock (3,040 underlying)
Exercise/Conversion
Stock Appreciation Rights
[F7]
2026-03-03−1,471→ 736 total
Exercise: $135.58Exp: 2031-03-01→ Common Stock (1,471 underlying)
Exercise/Conversion
Stock Appreciation Rights
[F8]
2026-03-03−1,017→ 2,034 total
Exercise: $87.36Exp: 2032-03-01→ Common Stock (1,017 underlying)

Holdings

Footnotes (8)

[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.
[F4]These restricted stock units vest in three equal annual installments beginning March 1, 2027.
[F5]The Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2027.
[F6]The Stock Appreciation Rights vested in three equal annual installments beginning March 1, 2024.
[F7]These Stock Appreciation Rights vest in three equal installments beginning March 1, 2025.
[F8]These Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2026.

Signature

/s/Michelle R. Mekinda, as Attorney-In-Fact|2026-03-03

Documents

1 file