By CapitalSnitch Research Desk · updated Oct 11, 2026 · data from SEC filings and official Congress disclosures
Insider activity at Minerals Technologies Inc has been all selling for a year now: about $4.1 million from four sellers, and zero buyers with their own money.
Keep in mind most insider selling is routine — stock-based pay has to be converted to cash at some point.
Looking at the quarterly pattern: No open-market insider buying or selling in the last full quarter. Insiders bought in 1 of the last 7 full quarters. On the institutional side, 293 funds reported holding MTX at the end of Q2 2026, and more funds bought than sold. Members of Congress reported 3 trades in MTX over the past two years (one member).
Are insiders buying or selling MTX stock?
In the last 12 months Minerals Technologies Inc insiders made open-market purchases worth about $0 and sales worth about $4.1 million. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
When was the last insider trade in MTX?
The most recent open-market insider trade in MTX was filed on 2026-05-18.
How many institutions own MTX?
293 investment managers reported holding MTX in SEC Form 13F filings for Q2 2026.
Has any member of Congress traded MTX?
Yes. Members of Congress reported 3 trades in MTX over the past two years. The full list is free on CapitalSnitch.
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Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1).
Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).