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Chemnitz Gregory R.

Disclosed activity across 1 company

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37812
SEC CIK
0001519910

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
MATERION CorpMTRN · Entity 1312VP General Counsel & SecretarySeptember 04, 2026September 09, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

MATERION Corp

Report date September 04, 2026 · Filed September 09, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect3,547 Reported balance After 2026-09-04 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-09-04 · Grant · Acquired 2 · Balance 3,547

F1: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3: Expiration Date is the same as the Date Exercisable.

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3: Expiration Date is the same as the Date Exercisable.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 04, 2026 Filed Sep 9, 2026 20:59 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 2 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000014 · wk-form4_1788987597.xml · derivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,547

Underlying: Common Stock · 2 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
June 12, 2026 Filed Jun 16, 2026 17:29 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 2 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000012 · wk-form4_1781630957.xml · derivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,545

Underlying: Common Stock · 2 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
March 09, 2026 Filed Mar 10, 2026 18:21 UTC MATERION Corp MTRN · Entity 1312 Tax withholdingCommon Stock 5 $144.19 $720.95
Disclosure

SEC source: 0001519910-26-000010 · wk-form4_1773166888.xml · nonDerivative · entry 2

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,930

Read SEC document
March 06, 2026 Filed Mar 10, 2026 18:21 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 4 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000010 · wk-form4_1773166888.xml · derivative · entry 4

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,543

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
March 06, 2026 Filed Mar 10, 2026 18:21 UTC MATERION Corp MTRN · Entity 1312 GrantCommon Stock 5 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000010 · wk-form4_1773166888.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,935

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionStock Appreciation Rights · Derivative 1,017 $0.00 Strike: $87.36 $0.00
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · derivative · entry 15

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,034

Underlying: Common Stock · 1,017 shares

Expires 2032-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F8 · derivative.exercise_date: These Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2026.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionStock Appreciation Rights · Derivative 1,471 $0.00 Strike: $135.58 $0.00
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · derivative · entry 14

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 736

Underlying: Common Stock · 1,471 shares

Expires 2031-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_date: These Stock Appreciation Rights vest in three equal installments beginning March 1, 2025.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionStock Appreciation Rights · Derivative 3,040 $0.00 Strike: $113.28 $0.00
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · derivative · entry 13

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,040 shares

Expires 2030-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: The Stock Appreciation Rights vested in three equal annual installments beginning March 1, 2024.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 3,434 $157.26 $540,030.84
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · nonDerivative · entry 8

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,930

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 1,083 $157.52 $170,588.75
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · nonDerivative · entry 7

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,364

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Tax withholdingCommon Stock 4,445 $157.26 $699,020.70
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · nonDerivative · entry 6

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,447

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionCommon Stock 1,017 $87.36 $88,845.12
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · nonDerivative · entry 5

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,892

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionCommon Stock 1,471 $135.58 $199,438.18
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · nonDerivative · entry 4

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,875

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionCommon Stock 3,040 $113.28 $344,371.20
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · nonDerivative · entry 3

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,404

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Tax withholdingCommon Stock 1,211 $166.59 $201,740.49
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · nonDerivative · entry 2

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,364

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 GrantStock Appreciation Rights · Derivative 2,265 $0.00 Strike: $166.59 $0.00
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · derivative · entry 12

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,265

Underlying: Common Stock · 2,265 shares

Expires 2033-03-01

F5 · derivative.exercise_date: The Stock Appreciation Rights vest in three equal annual installments beginning March 1, 2027.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 1,479 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · derivative · entry 11

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,539

Underlying: Common Stock · 1,479 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F4 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning March 1, 2027.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionRestricted Stock Units · Derivative 2,003 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · derivative · entry 10

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,060

Underlying: Common Stock · 2,003 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: 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 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:16 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionCommon Stock 2,003 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000008 · wk-form4_1772583399.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,575

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 00:42 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 4,000 $157.09 $628,360.00
Disclosure

SEC source: 0001519910-26-000006 · wk-form4_1771548167.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,572

Read SEC document
February 12, 2026 Filed Feb 13, 2026 20:42 UTC MATERION Corp MTRN · Entity 1312 GrantCommon Stock 2,196 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000004 · wk-form4_1771015328.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,572

Read SEC document
January 31, 2026 Filed Feb 3, 2026 19:55 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 98 $0.00 $0.00
Disclosure

SEC source: 0001519910-26-000002 · wk-form4_1770148518.xml · derivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,063

Underlying: Common Stock · 98 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: The restricted stock units will vest on January 31, 2029.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
December 05, 2025 Filed Dec 9, 2025 16:47 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 4 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000194 · wk-form4_1765298822.xml · derivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,965

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These restricted stock units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
November 04, 2025 Filed Nov 6, 2025 18:27 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionStock Appreciation Rights · Derivative 2,254 $0.00 Strike: $80.85 $0.00
Disclosure

SEC source: 0001519910-25-000008 · wk-form4_1762453641.xml · derivative · entry 8

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,254 shares

Expires 2029-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The Stock Appreciation Rights vested in three equal annual installments beginning March 1, 2023.

Read SEC document
November 04, 2025 Filed Nov 6, 2025 18:27 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionStock Appreciation Rights · Derivative 1,459 $0.00 Strike: $68.82 $0.00
Disclosure

SEC source: 0001519910-25-000008 · wk-form4_1762453641.xml · derivative · entry 7

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,459 shares

Expires 2028-02-17

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: The Stock Appreciation Rights vested in three equal annual installments beginning February 17, 2022.

Read SEC document
November 04, 2025 Filed Nov 6, 2025 18:27 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 864 $113.23 $97,827.26
Disclosure

SEC source: 0001519910-25-000008 · wk-form4_1762453641.xml · nonDerivative · entry 5

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,376

Read SEC document
November 04, 2025 Filed Nov 6, 2025 18:27 UTC MATERION Corp MTRN · Entity 1312 Tax withholdingCommon Stock 1,796 $113.13 $203,181.48
Disclosure

SEC source: 0001519910-25-000008 · wk-form4_1762453641.xml · nonDerivative · entry 4

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,240

Read SEC document
November 04, 2025 Filed Nov 6, 2025 18:27 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionCommon Stock 2,254 $80.85 $182,235.90
Disclosure

SEC source: 0001519910-25-000008 · wk-form4_1762453641.xml · nonDerivative · entry 3

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,036

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
November 04, 2025 Filed Nov 6, 2025 18:27 UTC MATERION Corp MTRN · Entity 1312 Tax withholdingCommon Stock 1,053 $112.96 $118,946.88
Disclosure

SEC source: 0001519910-25-000008 · wk-form4_1762453641.xml · nonDerivative · entry 2

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,782

Read SEC document
November 04, 2025 Filed Nov 6, 2025 18:27 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionCommon Stock 1,459 $68.82 $100,408.38
Disclosure

SEC source: 0001519910-25-000008 · wk-form4_1762453641.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,835

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
September 05, 2025 Filed Sep 9, 2025 18:39 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 5 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000175 · wk-form4_1757443169.xml · derivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,961

Underlying: Common Stock · 5 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
August 04, 2025 Filed Aug 6, 2025 14:09 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 2,082 $105.40 $219,444.47
Disclosure

SEC source: 0001104657-25-000150 · wk-form4_1754489342.xml · nonDerivative · entry 2

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,376

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.2300 to $105.5500, inclusive.

Read SEC document
August 04, 2025 Filed Aug 6, 2025 14:09 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 918 $104.65 $96,067.23
Disclosure

SEC source: 0001104657-25-000150 · wk-form4_1754489342.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,458

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $104.2300 to $105.1750, inclusive.

F2 · price: The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (3) of this Form 4.

Read SEC document
June 13, 2025 Filed Jun 17, 2025 14:28 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 7 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000105 · wk-form4_1750170484.xml · derivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,956

Underlying: Common Stock · 7 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

Read SEC document
May 05, 2025 Filed May 6, 2025 18:41 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 1 $83.33 $83.33
Disclosure

SEC source: 0001104657-25-000060 · wk-form4_1746556910.xml · nonDerivative · entry 4

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,376

Read SEC document
May 05, 2025 Filed May 6, 2025 18:41 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 130 $81.70 $10,620.74
Disclosure

SEC source: 0001104657-25-000060 · wk-form4_1746556910.xml · nonDerivative · entry 3

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,377

F2 · price: The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (3), and (4) of this Form 4.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.525 to $81.970, inclusive.

Read SEC document
May 05, 2025 Filed May 6, 2025 18:41 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 939 $80.86 $75,928.48
Disclosure

SEC source: 0001104657-25-000060 · wk-form4_1746556910.xml · nonDerivative · entry 2

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,507

F2 · price: The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (3), and (4) of this Form 4.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.523 to $81.512, inclusive.

Read SEC document
May 05, 2025 Filed May 6, 2025 18:41 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 930 $79.85 $74,259.57
Disclosure

SEC source: 0001104657-25-000060 · wk-form4_1746556910.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,446

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.520 to $80.516, inclusive.

F2 · price: The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (3), and (4) of this Form 4.

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March 10, 2025 Filed Mar 11, 2025 20:29 UTC MATERION Corp MTRN · Entity 1312 Tax withholdingCommon Stock 6 $88.77 $532.62
Disclosure

SEC source: 0001104657-25-000036 · wk-form4_1741724965.xml · nonDerivative · entry 2

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,376

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March 07, 2025 Filed Mar 11, 2025 20:29 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 7 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000036 · wk-form4_1741724965.xml · derivative · entry 4

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,949

Underlying: Common Stock · 7 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

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March 07, 2025 Filed Mar 11, 2025 20:29 UTC MATERION Corp MTRN · Entity 1312 GrantCommon Stock 8 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000036 · wk-form4_1741724965.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,382

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March 03, 2025 Filed Mar 4, 2025 22:52 UTC MATERION Corp MTRN · Entity 1312 Tax withholdingCommon Stock 1,356 $87.36 $118,460.16
Disclosure

SEC source: 0001104657-25-000025 · wk-form4_1741128730.xml · nonDerivative · entry 2

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,374

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March 01, 2025 Filed Mar 4, 2025 22:52 UTC MATERION Corp MTRN · Entity 1312 GrantStock Appreciation Rights · Derivative 3,051 $0.00 Strike: $87.36 $0.00
Disclosure

SEC source: 0001104657-25-000025 · wk-form4_1741128730.xml · derivative · entry 6

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,051

Underlying: Common Stock · 3,051 shares

Expires 2032-03-01

F5 · derivative.exercise_date: These Stock Appreciate Rights vest in three equal annual installments beginning March 1, 2026.

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March 01, 2025 Filed Mar 4, 2025 22:52 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 2,068 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000025 · wk-form4_1741128730.xml · derivative · entry 5

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,942

Underlying: Common Stock · 2,068 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F4 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning March 1, 2026.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

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March 01, 2025 Filed Mar 4, 2025 22:52 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionRestricted Stock Units · Derivative 2,679 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000025 · wk-form4_1741128730.xml · derivative · entry 4

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,874

Underlying: Common Stock · 2,679 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These units granted on 03/01/2022, 03/01/2023, and 03/01/2024, and any related dividend equivalents, vest in three equal annual installments, except for 618 restricted stock units granted on 03/01/2022 (and any related dividend equivalents) that cliff vested on 03/01/2025.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

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March 01, 2025 Filed Mar 4, 2025 22:52 UTC MATERION Corp MTRN · Entity 1312 Exercise / conversionCommon Stock 2,679 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000025 · wk-form4_1741128730.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,730

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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February 13, 2025 Filed Feb 18, 2025 18:54 UTC MATERION Corp MTRN · Entity 1312 GrantCommon Stock 2,020 $0.00 $0.00
Disclosure

SEC source: 0001104657-25-000011 · wk-form4_1739904859.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,051

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December 06, 2024 Filed Dec 10, 2024 23:08 UTC MATERION Corp MTRN · Entity 1312 GrantRestricted Stock Units · Derivative 6 $0.00 $0.00
Disclosure

SEC source: 0001104657-24-000159 · wk-form4_1733872086.xml · derivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,553

Underlying: Common Stock · 6 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of MTRN common stock.

F2 · derivative.exercise_date: These units, which were acquired upon the reinvestment of dividend equivalents, will vest at the same time as the restricted stock units to which they relate.

F3 · derivative.expiration_date: Expiration Date is the same as the Date Exercisable.

F4 · balance_after: The Reporting Person's direct holdings have been adjusted by a de minimus number of shares to account for reconciliation to the issuer's account records for the Reporting Person.

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November 07, 2024 Filed Nov 12, 2024 13:59 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 1,500 $117.87 $176,799.00
Disclosure

SEC source: 0001104657-24-000149 · wk-form4_1731419967.xml · nonDerivative · entry 2

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,031

F2 · price: The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (3) of this Form 4.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $117.250 to $118.020, inclusive.

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November 07, 2024 Filed Nov 12, 2024 13:59 UTC MATERION Corp MTRN · Entity 1312 SaleCommon Stock 500 $116.67 $58,335.00
Disclosure

SEC source: 0001104657-24-000149 · wk-form4_1731419967.xml · nonDerivative · entry 1

Chemnitz Gregory R. · CIK 0001519910 · VP General Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,531

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.100 to $117.050, inclusive.

F2 · price: The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (3) of this Form 4.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.