Minerals Technologies Inc.
Minerals Technologies Inc. (MTX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MTX · as of Sep 30, 2025
Ownership Breakdown
278
Institutional Holders
▲ 19 vs Q2
$1.90B
Total Inst. Value
▲ $177.74M vs Q2
31.01M
Shares Outstanding
freeFloat 98.55%
30.61M
13F Shares Held
▼ 683,030 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
MTX largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. industrial inorganic chemicals | 4.71M | 14.92% | 14.92% | $292.80B | Nov 12, 2025 | ▼ 145.2K |
VANGUARD GROUP INC industrial inorganic chemicals | 3.58M | 11.32% | 11.32% | $222.13B | Nov 7, 2025 | ▼ 62.7K |
FMR LLC industrial inorganic chemicals | 2.30M | 7.29% | 7.29% | $143.16B | Nov 13, 2025 | ▲ 407.0K |
DIMENSIONAL FUND ADVISORS LP industrial inorganic chemicals | 2.04M | 6.46% | 6.46% | $126.80B | Nov 12, 2025 | ▼ 30.7K |
MACQUARIE GROUP LTD industrial inorganic chemicals | 1.73M | 5.48% | 5.48% | $107.49B | Nov 13, 2025 | ▼ 125.6K |
AMERICAN CENTURY COMPANIES INC industrial inorganic chemicals | 1.32M | 4.19% | 4.19% | $82.27B | Nov 12, 2025 | ▲ 39.9K |
STATE STREET CORP industrial inorganic chemicals | 1.21M | 3.84% | 3.84% | $75.47B | Nov 14, 2025 | ▼ 24.5K |
GEODE CAPITAL MANAGEMENT, LLC industrial inorganic chemicals | 893.2K | 2.83% | 2.83% | $55.49B | Nov 12, 2025 | ▼ 18.7K |
BRANDES INVESTMENT PARTNERS, LP industrial inorganic chemicals | 667.0K | 2.11% | 2.11% | $41.43B | Nov 14, 2025 | ▲ 128.9K |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC industrial inorganic chemicals | 581.8K | 1.84% | 1.84% | $36.14B | Nov 10, 2025 | ▲ 32.3K |
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
22
Increased
+1.36M shares0
New Positions
first time holders27
Decreased
−963.5K shares0
Sold Out
fully exitedNet shares change (top 50)
+398.8K
+1.36M / −963.5K
Net new holders
-5
0 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
MTX 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.
10
Buy transactions
3
Sell transactions
3.33
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 |
|---|---|---|---|---|---|---|---|
ROBINSON MARC E director | May 20, 2026 | Award | 1,908.146 | — | — | 26.9K | Form 4 ↗ |
PITTMAN CAROLYN K director | May 20, 2026 | Award | 1,908.146 | — | — | 20.6K | Form 4 ↗ |
Motwani Rocky director | May 20, 2026 | Award | 1,908.146 | — | — | 8.1K | Form 4 ↗ |
JOHNSON KRISTINA M director | May 20, 2026 | Award | 1,908.146 | — | — | 6.0K | Form 4 ↗ |
CLARK ROBERT L director | May 20, 2026 | Award | 1,908.146 | — | — | 33.7K | Form 4 ↗ |
CARMOLA JOHN J director | May 20, 2026 | Award | 1,908.146 | — | — | 27.9K | Form 4 ↗ |
Breunig Joseph C. director | May 20, 2026 | Award | 1,908.146 | — | — | 21.5K | Form 4 ↗ |
DIETRICH DOUGLAS T CHAIRMAN AND CEO | May 14, 2026 | Sale | 21,568 | $81.53 | $1.76M | 176.0K | Form 4 ↗ |
JORDAN TIMOTHY Vice President | May 11, 2026 | Sale | 6,000 | $80.27 | $481.6K | 1.3K | Form 4 ↗ |
FEDER FRANKLIN director | Apr 1, 2026 | Award | 238.871 | — | — | 23.2K | 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
Minerals Technologies Inc. (MTX) is primarily owned by institutional investors, who hold approximately 98.7% of total shares outstanding. Company insiders own approximately 1.45%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Minerals Technologies Inc. is BLACKROCK, INC., holding approximately 4.71 million shares — equal to 14.92% of outstanding shares — as of September 30, 2025.
A total of 278 institutional investors currently hold MTX stock, with a combined institutional value of approximately $1.90 billion as of the most recent 13F filing period.
Frequently asked questions
MTX ownershipMinerals Technologies Inc. (MTX) is primarily owned by institutional investors, who hold approximately 98.7% of shares. The largest shareholder is BLACKROCK, INC. with a 14.92% stake. Company insiders hold 1.45%. Data sourced from SEC Form 13F as of September 30, 2025.