Comparable stake leader
BlackRock, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001104657.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
Ownership snapshot
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Quick read
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
15%
from 13D/G
|
$1,032,984,711
3,473,501 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
6.5%
from 13D/G
|
$415,322,681
1,396,559 shares
|
— | 30 Jun 2026 |
| STATE STREET CORP |
13F
13D/G
Company · STATE STREET CORPORATION
|
6.2%
from 13D/G
|
$433,045,964
1,456,230 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Capital Management
|
5.2%
from 13D/G
|
$278,818,887
937,553 shares
|
— | 30 Jun 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13F
13D/G
Company
|
4.9%
from 13D/G
|
$171,868,217
577,952 shares
|
— | 30 Jun 2026 |
| Capital Research Global Investors |
13F
13D/G
Company
|
3.8%
from 13D/G
|
$297,525,610
1,000,456 shares
|
— | 30 Jun 2026 |
| N. Mohan Reddy |
3/4/5
Director
|
0.23%
|
$7,057,171
47,211 shares
mixed-class rows
|
— | 07 May 2026 |
| AMERICAN CENTURY COMPANIES INC |
13F
Company
|
3%
|
$183,198,789
616,020 shares
|
— | 30 Jun 2026 |
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Net insider flow leans to selling over the last 12 months. Net value: -$17,845,087.
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 33,246 | $0 | $9,444,258 | -$9,444,258 |
| 3-6 | 0 | 20,033 | $0 | $3,232,653 | -$3,232,653 |
| 6-9 | 0 | 33,208 | $0 | $5,070,348 | -$5,070,348 |
| 9-12 | 0 | 864 | $0 | $97,827 | -$97,827 |
Reporting owners
Showing 1-14 of 14 reporting-owner rows connected to MATERION Corp. Open a relationship link for the CIK-to-CIK filing trail.
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Jugal K. Vijayvargiya | President and CEO, Director | $35,804,228 | -$10,943,371 | -23% | Mixed | 07 Aug 2026 |
| Craig S. Shular | Director | $18,318,028 | Mixed | 15 Jul 2026 | ||
| Robert B. Toth | Director | $8,673,759 | Mixed | 10 Aug 2026 | ||
| Darlene J. S. Solomon | Director | $7,907,051 | -$1,082,690 | -12% | Mixed | 07 Aug 2026 |
| N. Mohan Reddy | Director | $7,057,171 | Mixed | 07 May 2026 | ||
| Patrick M. Prevost | Director | $5,573,401 | Mixed | 15 Jul 2026 | ||
| Shelly Marie Chadwick | Vice President, Finance & CFO | $5,317,406 | -$2,454,660 | -32% | Mixed | 07 Aug 2026 |
| Vinod M. Khilnani | Director | $4,900,994 | -$1,112,955 | -19% | Mixed | 12 Jun 2026 |
| Robert J. Phillippy | Director | $2,370,163 | -$765,164 | -24% | Mixed | 12 Jun 2026 |
| Gregory R. Chemnitz | VP General Counsel & Secretary | $1,986,016 | -$1,436,807 | -42% | Mixed | 12 Jun 2026 |
| Emily M. Liggett | Director | $1,122,788 | Mixed | 12 Jun 2026 | ||
| John M. Zaranec | Chief Accounting Officer | $601,084 | Mixed | 15 Jun 2023 | ||
| Melissa A. Fashinpaur | Chief Accounting Officer | $49,600 | -$49,440 | -50% | Filing P/S | 12 Jun 2026 |
| Thomas T. Edman | Director | Mixed | 08 May 2026 |
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Robert B. Toth | MTRN | Common Stock | Gift | 28,832 | 28,832 | 10 Aug 2026 | By Spouse | |||
| Robert B. Toth | MTRN | Common Stock | Gift | -100% | -28,832 | 0 | 10 Aug 2026 | Direct | ||
| Shelly Marie Chadwick | MTRN | Common Stock | Sale | -10.1% | $499,565 | $293.00 | -1,705 | 15,246 | 07 Aug 2026 | Direct |
| Shelly Marie Chadwick | MTRN | Common Stock | Tax liability | -16.2% | -3,267 | 16,951 | 07 Aug 2026 | Direct | ||
| Shelly Marie Chadwick | MTRN | Common Stock | Options Exercise | 32.6% | 4,972 | 20,218 | 07 Aug 2026 | Direct | ||
| Shelly Marie Chadwick | MTRN | Stock Appreciation Rights | Options Exercise | -78% | -4,972 | 1,400 | 07 Aug 2026 | Direct | ||
| Jugal K. Vijayvargiya | MTRN | Common Stock | Sale | -17.3% | $7,096,839 | $291.62 | -24,336 | 116,699 | 07 Aug 2026 | Direct |
| Jugal K. Vijayvargiya | MTRN | Common Stock | Tax liability | -8.53% | -13,146 | 141,035 | 07 Aug 2026 | Direct | ||
| Jugal K. Vijayvargiya | MTRN | Common Stock | Options Exercise | 19% | 24,594 | 154,181 | 07 Aug 2026 | Direct | ||
| Jugal K. Vijayvargiya | MTRN | Stock Appreciation Rights | Options Exercise | -100% | -24,594 | 0 | 07 Aug 2026 | Direct | ||
| Darlene J. S. Solomon | MTRN | Common Stock | Sale | -12.2% | $1,082,690 | $292.22 | -3,705 | 26,718 | 07 Aug 2026 | Direct |
| Patrick M. Prevost | MTRN | Common Stock | Award | 0.44% | 81 | 18,407 | 15 Jul 2026 | Held In Directors Deferred Comp. Plan | ||
| Craig S. Shular | MTRN | Common Stock | Award | 0.18% | 96 | 54,920 | 15 Jul 2026 | Held In Directors Deferred Comp. Plan | ||
| Melissa A. Fashinpaur | MTRN | Restricted Stock Units | Award | 0.04% | 1 | 2,238 | 12 Jun 2026 | Direct | ||
| Shelly Marie Chadwick | MTRN | Restricted Stock Units | Award | 0.06% | 8 | 12,498 | 12 Jun 2026 | Direct | ||
| Patrick M. Prevost | MTRN | Common Stock | Award | 0.05% | 9.5 | 18,326 | 12 Jun 2026 | Held In Directors Deferred Comp. Plan | ||
| Emily M. Liggett | MTRN | Common Stock | Award | 0.06% | 0.74 | 1,271 | 12 Jun 2026 | Held in Directors Deferred Comp. Plan | ||
| Jugal K. Vijayvargiya | MTRN | Restricted Stock Units | Award | 0.06% | 11 | 19,110 | 12 Jun 2026 | Direct | ||
| Robert J. Phillippy | MTRN | Common Stock | Award | 0.06% | 7.01 | 12,034 | 12 Jun 2026 | Held in Directors Deferred Compensation Plan | ||
| Gregory R. Chemnitz | MTRN | Restricted Stock Units | Award | 0.06% | 2 | 3,545 | 12 Jun 2026 | Direct | ||
| Vinod M. Khilnani | MTRN | Common Stock | Award | 0.06% | 11.66 | 20,024 | 12 Jun 2026 | Held in Directors Deferred Compensation Plan. | ||
| Craig S. Shular | MTRN | Common Stock | Award | 0.06% | 30.74 | 54,824 | 12 Jun 2026 | Held In Directors Deferred Comp. Plan | ||
| Robert J. Phillippy | MTRN | Common Stock | Sale | -48.9% | $765,164 | $218.62 | -3,500 | 3,664 | 29 May 2026 | Direct |
| Vinod M. Khilnani | MTRN | Common Stock | Sale | -16% | $517,498 | $207.00 | -2,500 | 13,171 | 13 May 2026 | Direct |
| Jugal K. Vijayvargiya | MTRN | Common Stock | Tax liability | -10.5% | -15,183 | 129,587 | 13 May 2026 | Direct | ||
| Jugal K. Vijayvargiya | MTRN | Common Stock | Options Exercise | 24% | 28,071 | 144,770 | 13 May 2026 | Direct | ||
| Jugal K. Vijayvargiya | MTRN | Stock Appreciation Rights | Options Exercise | -100% | -28,071 | 0 | 13 May 2026 | Direct | ||
| Shelly Marie Chadwick | MTRN | Common Stock | Sale | -7.25% | $237,065 | $198.88 | -1,192 | 15,246 | 08 May 2026 | Direct |
| Shelly Marie Chadwick | MTRN | Common Stock | Tax liability | -18.4% | -3,720 | 16,438 | 08 May 2026 | Direct | ||
| Shelly Marie Chadwick | MTRN | Common Stock | Options Exercise | 32.2% | 4,912 | 20,158 | 08 May 2026 | Direct | ||
| Shelly Marie Chadwick | MTRN | Stock Appreciation Rights | Options Exercise | -100% | -4,912 | 0 | 08 May 2026 | Direct | ||
| Emily M. Liggett | MTRN | Restricted Stock Units | Award | 758 | 758 | 08 May 2026 | Direct | |||
| Vinod M. Khilnani | MTRN | Restricted Stock Unit | Award | 837 | 837 | 08 May 2026 | Direct | |||
| Robert B. Toth | MTRN | Restricted Stock Units | Award | 758 | 758 | 08 May 2026 | Direct | |||
| Darlene J. S. Solomon | MTRN | Restricted Stock Units | Award | 758 | 758 | 08 May 2026 | Direct | |||
| Patrick M. Prevost | MTRN | Restricted Stock Units | Award | 758 | 758 | 08 May 2026 | Direct | |||
| Edman Thomas T. | MTRN | Restricted Stock Units | Award | 758 | 758 | 08 May 2026 | Direct | |||
| Craig S. Shular | MTRN | Restricted Stock Units | Award | 758 | 758 | 08 May 2026 | Direct | |||
| Robert J. Phillippy | MTRN | Restricted Stock Units | Award | 758 | 758 | 08 May 2026 | Direct | |||
| Emily M. Liggett | MTRN | Common Stock | Options Exercise | 53.1% | 2,006 | 5,782 | 07 May 2026 | Direct | ||
| Emily M. Liggett | MTRN | Restricted Stock Units | Options Exercise | -100% | -2,006 | 0 | 07 May 2026 | Direct | ||
| Vinod M. Khilnani | MTRN | Common Stock | Options Exercise | 14.7% | 2,006 | 15,671 | 07 May 2026 | Direct | ||
| Vinod M. Khilnani | MTRN | Restricted Stock Units | Options Exercise | -100% | -2,006 | 0 | 07 May 2026 | Direct | ||
| Robert B. Toth | MTRN | Common Stock | Options Exercise | 7.48% | 2,006 | 28,832 | 07 May 2026 | Direct | ||
| Robert B. Toth | MTRN | Restricted Stock Units | Options Exercise | -100% | -2,006 | 0 | 07 May 2026 | Direct | ||
| Darlene J. S. Solomon | MTRN | Common Stock | Options Exercise | 7.06% | 2,006 | 30,423 | 07 May 2026 | Direct | ||
| Darlene J. S. Solomon | MTRN | Restricted Stock Units | Options Exercise | -100% | -2,006 | 0 | 07 May 2026 | Direct | ||
| Patrick M. Prevost | MTRN | Common Stock | Options Exercise | 12.3% | 2,006 | 18,316 | 07 May 2026 | Held In Directors Deferred Comp. Plan | ||
| Patrick M. Prevost | MTRN | Restricted Stock Units | Options Exercise | -100% | -2,006 | 0 | 07 May 2026 | Direct | ||
| Craig S. Shular | MTRN | Common Stock | Options Exercise | 3.8% | 2,006 | 54,793 | 07 May 2026 | Held In Directors Deferred Comp. Plan |