Materion Corp (MTRN)

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Over the last 90 days, Materion Corp has seen significant insider selling, with a net value of -$1.52 million. Notably, former director N. Mohan Reddy and director Robert J. Philippy have engaged in substantial proposed sales and actual sales. The company's stock has performed strongly, up 53% in 90 days, reaching near its 52-week high.

Top insider sells (90, 60, 30, 7d)

Top cluster sells (90, 60, 30d)

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Top insider sells

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Ticker: MTRN Exchange: NYS

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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Trades

REDDY N MOHAN

Former Director

1 sale — total 100,000 USD

Proposed sale 3 Jun 2026

Value US$3,867,194.23 | Price 105.40 | Shares 95,059

REDDY N MOHAN

Former Director

1 sale — total 100,000 USD

Proposed sale 2 Jun 2026

Value US$3,117,797.33 | Price 298.22 | Shares 27,352

PHILLIPPY ROBERT J

5 sales — total 500,000 USD

Sale 29 May 2026

Value US$100,000.00 | Price 220.30 | Shares 1,000

Sale 29 May 2026

Value US$100,000.00 | Price 219.54 | Shares 1,000

Sale 29 May 2026

Value US$100,000.00 | Price 218.59 | Shares 1,000

Sale 29 May 2026

Value US$100,000.00 | Price 217.67 | Shares 1,000

Proposed sale 29 May 2026

Value US$100,000.00 | Price 218.62 | Shares 1,000

KHILNANI VINOD M

5 sales — total 909,125 USD

Sale 13 May 2026

Value US$100,000.00 | Price 208.74 | Shares 1,000

Sale 13 May 2026

Value US$100,000.00 | Price 208.04 | Shares 1,000

Sale 13 May 2026

Value US$100,000.00 | Price 206.68 | Shares 1,000

Sale 13 May 2026

Value US$100,000.00 | Price 205.33 | Shares 1,000

Proposed sale 13 May 2026

Value US$509,125.00 | Price 203.65 | Shares 2,500

Chadwick Shelly Marie

Vice President, Finance & CFO

2 sales — total 474,130 USD

Sale 8 May 2026

Value US$237,064.96 | Price 198.88 | Shares 1,192

Proposed sale 8 May 2026

Value US$237,065.08 | Price 198.88 | Shares 1,192

REDDY N MOHAN

Former Director

1 sale — total 400,253 USD

Proposed sale 8 May 2026

Value US$400,253.47 | Price 199.53 | Shares 2,006

Fashinpaur Melissa A

Chief Accounting Officer

1 sale — total 49,440 USD

Sale 3 Mar 2026

Value US$49,440.00 | Price 160.00 | Shares 309

Chemnitz Gregory R.

VP General Counsel & Secretary

2 sales — total 710,620 USD

Sale 3 Mar 2026

Value US$540,030.84 | Price 157.26 | Shares 3,434

Sale 3 Mar 2026

Value US$170,588.74 | Price 157.52 | Shares 1,083

Chadwick Shelly Marie

Vice President, Finance & CFO

2 sales — total 406,393 USD

Sale 3 Mar 2026

Value US$243,000.00 | Price 162.00 | Shares 1,500

Planned sale 3 Mar 2026

Value US$163,393.14 | Price 157.26 | Shares 1,039

Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	B/S Transaction type	Insider and/or position	Nb. shares Price Value	Number of shares	Price	Value
2026-06-03	2026-06-03	PrS Proposed sale	0.8 REDDY N MOHAN Former Director Non-Executive Director	95,059 105.40 US$3,867,194	95,059	105.40	US$3,867,194
2026-06-02	2026-06-02	PrS Proposed sale	0.8 REDDY N MOHAN Former Director Non-Executive Director	27,352 298.22 US$3,117,797	27,352	298.22	US$3,117,797
2026-06-01	2026-05-29	S Sale	1.4 PHILLIPPY ROBERT J Non-Executive Director	95,645 +39.2% 229.86 US$2,803,321	95,645 +39.2%	229.86	US$2,803,321
2026-06-01	2026-05-29	S Sale	1.4 PHILLIPPY ROBERT J Non-Executive Director	1,000 -15.5% 219.54 US$100,000	1,000 -15.5%	219.54	US$100,000
2026-06-01	2026-05-29	S Sale	1.4 PHILLIPPY ROBERT J Non-Executive Director	1,000 -18.5% 218.59 US$100,000	1,000 -18.5%	218.59	US$100,000
2026-06-01	2026-05-29	S Sale	1.4 PHILLIPPY ROBERT J Non-Executive Director	1,000 -18.4% 217.67 US$100,000	1,000 -18.4%	217.67	US$100,000
2026-05-29	2026-05-29	PrS Proposed sale	1.4 PHILLIPPY ROBERT J Director Non-Executive Director	1,000 218.62 US$100,000	1,000	218.62	US$100,000
2026-05-15	2026-05-13	S Sale	2.5 KHILNANI VINOD M Non-Executive Director	1,000 -4.4% 208.74 US$100,000	1,000 -4.4%	208.74	US$100,000
2026-05-15	2026-05-13	S Sale	2.5 KHILNANI VINOD M Non-Executive Director	1,000 -2.9% 208.04 US$100,000	1,000 -2.9%	208.04	US$100,000
2026-05-15	2026-05-13	S Sale	2.5 KHILNANI VINOD M Non-Executive Director	1,000 -5.0% 206.68 US$100,000	1,000 -5.0%	206.68	US$100,000
2026-05-15	2026-05-13	S Sale	2.5 KHILNANI VINOD M Non-Executive Director	1,000 -4.7% 205.33 US$100,000	1,000 -4.7%	205.33	US$100,000
2026-05-13	2026-05-13	PrS Proposed sale	2.5 KHILNANI VINOD M Director Non-Executive Director	2,500 203.65 US$509,125	2,500	203.65	US$509,125
2026-05-12	2026-05-08	S Sale	2.8 Chadwick Shelly Marie Vice President, Finance & CFO Officer	1,192 -7.3% 198.88 US$237,065	1,192 -7.3%	198.88	US$237,065
2026-05-08	2026-05-08	PrS Proposed sale	2.8 Chadwick Shelly Marie Officer Officer	1,192 198.88 US$237,065	1,192	198.88	US$237,065
2026-05-08	2026-05-08	PrS Proposed sale	0.8 REDDY N MOHAN Former Director Non-Executive Director	2,006 199.53 US$400,253	2,006	199.53	US$400,253
2026-03-03	2026-03-03	S Sale	1.2 Fashinpaur Melissa A Chief Accounting Officer Officer	309 -49.9% 160.00 US$49,440	309 -49.9%	160.00	US$49,440
2026-03-03	2026-03-03	S Sale	3.2 Chemnitz Gregory R. VP General Counsel & Secretary Officer	3,434 -36.7% 157.26 US$540,031	3,434 -36.7%	157.26	US$540,031
2026-03-03	2026-03-03	S Sale	3.2 Chemnitz Gregory R. VP General Counsel & Secretary Officer	1,083 -10.4% 157.52 US$170,589	1,083 -10.4%	157.52	US$170,589
2026-03-03	2026-03-03	S Sale	2.8 Chadwick Shelly Marie Vice President, Finance & CFO Officer	1,500 -9.0% 162.00 US$243,000	1,500 -9.0%	162.00	US$243,000
2026-03-03	2026-03-03	PlS Planned sale	2.8 Chadwick Shelly Marie Vice President, Finance & CFO Officer	1,039 -5.8% 157.26 US$163,393	1,039 -5.8%	157.26	US$163,393