Materion Corporation
Materion Corporation (MTRN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MTRN · as of Sep 30, 2025
Ownership Breakdown
302
Institutional Holders
▲ 46 vs Q2
$2.40B
Total Inst. Value
▲ $851.73M vs Q2
20.80M
Shares Outstanding
freeFloat 98.78%
19.91M
13F Shares Held
▲ 356,175 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MTRN largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. metal forgings & stampings | 3.27M | 15.75% | 15.75% | $395.34B | Nov 12, 2025 | ▼ 55.3K |
VANGUARD GROUP INC metal forgings & stampings | 2.36M | 11.34% | 11.34% | $284.63B | Nov 7, 2025 | ▼ 29.9K |
CAPITAL RESEARCH GLOBAL INVESTORS metal forgings & stampings | 1.91M | 9.20% | 9.20% | $230.95B | Nov 13, 2025 | — held |
STATE STREET CORP metal forgings & stampings | 1.34M | 6.44% | 6.44% | $161.55B | Nov 14, 2025 | ▲ 38.3K |
DIMENSIONAL FUND ADVISORS LP metal forgings & stampings | 1.00M | 4.83% | 4.83% | $121.16B | Nov 12, 2025 | ▼ 7.5K |
BARROW HANLEY MEWHINNEY & STRAUSS LLC metal forgings & stampings | 604.4K | 2.91% | 2.91% | $73.01B | Nov 13, 2025 | ▼ 35.9K |
ACK ASSET MANAGEMENT LLC metal forgings & stampings | 524.8K | 2.53% | 2.53% | $63.40B | Nov 14, 2025 | — held |
TRIGRAN INVESTMENTS, INC. metal forgings & stampings | 497.7K | 2.40% | 2.40% | $60.13B | Nov 12, 2025 | ▼ 301.0K |
GEODE CAPITAL MANAGEMENT, LLC metal forgings & stampings | 489.8K | 2.36% | 2.36% | $59.19B | Nov 12, 2025 | ▲ 2.7K |
MORGAN STANLEY metal forgings & stampings | 382.9K | 1.84% | 1.84% | $46.25B | May 27, 2026 | ▲ 168.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
27
Increased
+961.6K shares2
New Positions
first time holders17
Decreased
−690.4K shares0
Sold Out
fully exitedNet shares change (top 50)
+271.2K
+961.6K / −690.4K
Net new holders
+12
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MTRN insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
20
Buy transactions
17
Sell transactions
1.18
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
PHILLIPPY ROBERT J director | May 29, 2026 | Sale | 1,320 | $217.67 | $287.3K | 5.8K | Form 4 ↗ |
PHILLIPPY ROBERT J director | May 29, 2026 | Sale | 1,084 | $218.59 | $237.0K | 4.8K | Form 4 ↗ |
PHILLIPPY ROBERT J director | May 29, 2026 | Sale | 740 | $219.54 | $162.5K | 4.0K | Form 4 ↗ |
PHILLIPPY ROBERT J director | May 29, 2026 | Sale | 356 | $220.30 | $78.4K | 3.7K | Form 4 ↗ |
KHILNANI VINOD M director | May 13, 2026 | Sale | 735 | $205.32 | $150.9K | 14.9K | Form 4 ↗ |
KHILNANI VINOD M director | May 13, 2026 | Sale | 752 | $206.68 | $155.4K | 14.2K | Form 4 ↗ |
KHILNANI VINOD M director | May 13, 2026 | Sale | 410 | $208.03 | $85.3K | 13.8K | Form 4 ↗ |
KHILNANI VINOD M director | May 13, 2026 | Sale | 603 | $208.74 | $125.9K | 13.2K | Form 4 ↗ |
Vijayvargiya Jugal K. President and CEO | May 13, 2026 | Tax Withhold | 15,183 | $209.70 | $3.18M | 129.6K | Form 4 ↗ |
Chadwick Shelly Marie Vice President, Finance & CFO | May 8, 2026 | Tax Withhold | 3,720 | $199.14 | $740.8K | 16.4K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Materion Corporation (MTRN) is primarily owned by institutional investors, who hold approximately 95.7% of total shares outstanding. Company insiders own approximately 1.22%, while retail and public investors account for the remaining 3.05%.
The largest institutional shareholder of Materion Corporation is BLACKROCK, INC., holding approximately 3.27 million shares — equal to 15.75% of outstanding shares — as of September 30, 2025.
A total of 302 institutional investors currently hold MTRN stock, with a combined institutional value of approximately $2.40 billion as of the most recent 13F filing period.
Frequently asked questions
MTRN ownershipMaterion Corporation (MTRN) is primarily owned by institutional investors, who hold approximately 95.7% of shares. The largest shareholder is BLACKROCK, INC. with a 15.75% stake. Company insiders hold 1.22%. Data sourced from SEC Form 13F as of September 30, 2025.