MTX Trades by Members of Congress
Stock trades disclosed by members of Congress on periodic transaction reports (PTRs), newest trade date first. Click a name for the member’s full record, or a filing for the original PTR. House filings are current. Our Senate source stopped on Nov 30, 2020, so recent Senate trades are missing.
House PTR filings as of Oct 20, 2026
Senate PTR filings as of Nov 30, 2020 · not updated for 2152 days; newer filings may exist
Company data, filings and insider activity for MTX: MTX stock page.
Latest disclosed trades
1–8 of 8| Date | Member | Asset | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2026-07-10 | Gil Cisneros · D-CA-31 | MTX · Minerals Technologies Inc. Common Stock | Buy | $1k – $15k | PTR |
| 2026-01-05 | Gil Cisneros · D-CA-31 | MTX · Minerals Technologies Inc. Common Stock | Partial sell | $1k – $15k | PTR |
| 2025-05-06 | Gil Cisneros · D-CA-31 | MTX · Minerals Technologies Inc. Common Stock | Buy | $1k – $15k | PTR |
| 2024-06-21 | Josh Gottheimer · D-NJ-05 | MTX · Minerals Technologies Inc. Common Stock | Partial sell | $1k – $15k | PTR |
| 2021-12-15 | Josh Gottheimer · D-NJ-05 | MTX · Minerals Technologies Inc. | Buy | $1k – $15k | PTR |
| 2020-11-13 | Gil Cisneros · D-CA-31 | MTX · Minerals Technologies Inc. | Buy | $1k – $15k | — |
| 2020-09-29 | Gil Cisneros · D-CA-31 | MTX · Minerals Technologies Inc. | Buy | $1k – $15k | — |
| 2020-09-24 | Josh Gottheimer · D-NJ-05 | MTX · Minerals Technologies Inc. | Buy | $1k – $15k | — |
Where do these trades come from?
Members of Congress report stock trades on periodic transaction reports under the STOCK Act: within 30 days of being notified of a trade and no later than 45 days after it. Each report gives a trade date, the asset, buy or sell, and an amount band rather than an exact amount. This feed lists trades by trade date, so a trade reported today can appear below newer ones. See which members reported late on the STOCK Act late-filing tracker, the stocks the most members bought, or browse members of the House and Senate.
Source: U.S. House Clerk and Senate periodic transaction reports. Educational only — not investment advice. See our methodology.