Shelly Marie Chadwick - Mar 4, 2025 Form 4 Insider Report for MATERION Corp (MTRN)

Role: Vice President, Finance & CFO
Signature: /s/Michelle R. Mekinda, as Attorney-In-Fact
Stock symbol: MTRN
Transactions as of: Mar 4, 2025
Transactions value $: -$108,104
Form type: 4
Date filed: 3/6/2025, 04:37 PM
Previous filing: Mar 4, 2025
Next filing: Mar 11, 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MTRN	Common Stock	Sale	-$108K	-1.26K	-6.59%	$86.07	17.8K	Mar 4, 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id	Content
F1	The reported sale of 1,256 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 1, 2024.