Shelly Marie Chadwick sold $500K of MTRN stock

Shelly Marie Chadwick, Vice President, Finance & CFO of MATERION Corp (MTRN), sold 1,705 shares of MTRN stock worth $500K, per an SEC Form 4 filed Aug 11, 2026.

The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.

The trade happened on Aug 7, 2026, 4 days before it was made public.

MTRN has moved -27.4% since the trade date, from $290.05 to $210.51 (Nov 11, 2026 close).