Minerals Technologies Inc.
Congress has disclosed 6 buys and 2 sells of MTX (Minerals Technologies Inc.) in official financial disclosures, each linked to its original filing. A transparency record — not investment advice.
Activity Congressional Activity
Round-trip watch Still on the books
Members who disclosed buying MTX and have not disclosed selling, versus their own entry (the most recent disclosed buy). "Open" means no disclosed sale — never "still holds" — and the % is unrealised, on paper. Not investment advice.
| Member | Entry (last buy) | Entry price | Now | vs entry | Status |
|---|---|---|---|---|---|
| Gilbert Cisneros | 2026-07-10 | $72.34 | $62.74 | -13.3% | underwater |
Price as of 2026-10-30. Counted open while disclosed buys outnumber disclosed sells; tracks the price, not exact position size (amounts are ranges).
Fundamentals · FY2026 Valuation
Standard valuation multiples from SEC-reported GAAP financials (trailing twelve months), each compared to the median for Chemicals. We use reported GAAP, not forward or adjusted earnings, so our figures can sit higher than sites that do — especially for companies with falling profit. Relative context — not a target price or investment advice.
how it's calculated
8 trades Recent Congressional Trades
Two things to watch per trade: the disclosure lag (how many days passed before the trade was made public) and the price move in that window (how the stock moved during those non-public days). A sell followed by a price drop, or a buy followed by a rise, means well-timed trading — visible here in the open. Note: the Score measures how notable a trade is, not whether it made money — the price move is shown for context and isn't part of it.
| Politician | Chamber | Type | Owner | Date | Disclosure lag | Price move in that window | Amount | Score | Source |
|---|---|---|---|---|---|---|---|---|---|
| Gilbert Cisneros | House | BUY ◆ insider divergence | Self · 150 Main Street Trust > Bank of America | 2026-07-10 | 35 days | +0.9% | $1K–$15K 0.1% of NW |
18.9 | ↗ filing |
| Gilbert Cisneros | House | SELL ◆ insider convergence | Self · 150 Main Street Trust > Bank of America | 2026-01-05 | 37 days | +19.6% | $1K–$15K 0.1% of NW |
8.0 | ↗ filing |
| Gilbert Cisneros | House | BUY ◆ insider convergence · strong | Self · 150 Main Street Trust > Bank of America | 2025-05-06 | 29 days | +10.7% | $1K–$15K 0.1% of NW |
13.2 | ↗ filing |
| Josh Gottheimer | House | SELL ◆ insider convergence · moderate | Joint · Morgan Stanley - Select UMA Account # 1 | 2024-06-21 | 17 days | — | $1K–$15K <0.1% of NW |
13.0 | ↗ filing |
| Josh Gottheimer | House | BUY | Joint | 2021-12-15 | 20 days | — | $1K–$15K <0.1% of NW |
40.4 | ↗ filing |
| Gilbert Cisneros | House | BUY | Self | 2020-11-13 | 31 days | — | $1K–$15K 0.1% of NW |
40.4 | ↗ filing |
| Gilbert Cisneros | House | BUY | Self | 2020-09-29 | 14 days | — | $1K–$15K 0.1% of NW |
86.8 | ↗ filing |
| Josh Gottheimer | House | BUY | Joint | 2020-09-24 | 11 days | — | $1K–$15K <0.1% of NW |
86.8 | ↗ filing |
Corporate insiders · SEC Form 4 Insider Activity
What the company's own officers and directors did in MTX — open-market purchases and sales from SEC Form 4 filings (option exercises, grants and tax withholding are excluded). This is context for the congressional activity above, never a buy/sell signal, and the two datasets are kept separate on purpose. Does convergence mean anything? →
Of the congressional trades in MTX, 3 coincided with corporate insiders moving the same way within 60 days, and 1 with insiders moving the opposite way. This is co-occurrence only — whether it carries any edge is tested honestly on the convergence page.
| Date | Insider | Role | Type | Size | Source |
|---|---|---|---|---|---|
| 2026-05-14 | DIETRICH DOUGLAS T | C-suite | SELL | $1.8M | ↗ EDGAR |
| 2026-05-11 | JORDAN TIMOTHY | Other | SELL | $482K | ↗ EDGAR |
| 2025-12-29 | MONAGLE DJ III | C-suite | SELL | $1.4M | ↗ EDGAR |
| 2025-11-21 | ARGIRAKIS BRETT | C-suite | SELL | $381K | ↗ EDGAR |
| 2025-06-16 | Motwani Rocky | Director | BUY | $20K | ↗ EDGAR |
| 2025-05-02 | JOHNSON KRISTINA M | Director | BUY | $54K | ↗ EDGAR |
| 2025-04-30 | DIETRICH DOUGLAS T | C-suite | BUY | $103K | ↗ EDGAR |
| 2025-04-30 | ALDAG ERIK | C-suite | BUY | $50K | ↗ EDGAR |
| 2024-06-24 | MONAGLE DJ III | C-suite | SELL | $1.2M | ↗ EDGAR |
| 2024-06-18 | Hastings Jonathan J | Other | SELL | $1.8M | ↗ EDGAR |
| 2024-06-17 | ARGIRAKIS BRETT | C-suite | SELL | $190K | ↗ EDGAR |
| 2024-06-12 | Hastings Jonathan J | Other | SELL | $697K | ↗ EDGAR |
| 2024-06-12 | Hastings Jonathan J | Other | SELL | $69K | ↗ EDGAR |
| 2024-06-03 | CUTLER ERIN | Other | SELL | $19K | ↗ EDGAR |
| 2024-05-29 | DIETRICH DOUGLAS T | C-suite | SELL | $2.1M | ↗ EDGAR |
| 2024-05-28 | DIETRICH DOUGLAS T | C-suite | SELL | $1.0M | ↗ EDGAR |
| 2024-05-28 | CIPOLLA MICHAEL | Other | SELL | $1.0M | ↗ EDGAR |
| 2024-05-21 | Hastings Jonathan J | Other | SELL | $650K | ↗ EDGAR |
| 2024-05-16 | JOHNSON KRISTINA M | Director | BUY | $32K | ↗ EDGAR |
| 2024-03-22 | MONAGLE DJ III | C-suite | SELL | $87K | ↗ EDGAR |
| 2024-02-20 | Hastings Jonathan J | Other | SELL | $924K | ↗ EDGAR |
| 2023-12-20 | MONAGLE DJ III | C-suite | SELL | $780K | ↗ EDGAR |
| 2023-12-20 | MONAGLE DJ III | C-suite | SELL | $213K | ↗ EDGAR |
| 2023-12-14 | ARGIRAKIS BRETT | C-suite | SELL | $177K | ↗ EDGAR |
| 2023-12-07 | CIPOLLA MICHAEL | Other | SELL | $305K | ↗ EDGAR |
Combined timeline — Congress & insiders
Both sets of trades on one timeline, newest first, so you can see when they lined up. Congress vs ◆ insider.
| Date | Who | Type | Size | |
|---|---|---|---|---|
| Congress | 2026-07-10 | Gilbert Cisneros | BUY | $1K–$15K |
| ◆ insider | 2026-05-14 | DIETRICH DOUGLAS T C-suite | SELL | $1.8M |
| ◆ insider | 2026-05-11 | JORDAN TIMOTHY Other | SELL | $482K |
| Congress | 2026-01-05 | Gilbert Cisneros | SELL | $1K–$15K |
| ◆ insider | 2025-12-29 | MONAGLE DJ III C-suite | SELL | $1.4M |
| ◆ insider | 2025-11-21 | ARGIRAKIS BRETT C-suite | SELL | $381K |
| ◆ insider | 2025-06-16 | Motwani Rocky Director | BUY | $20K |
| Congress | 2025-05-06 | Gilbert Cisneros | BUY | $1K–$15K |
| ◆ insider | 2025-05-02 | JOHNSON KRISTINA M Director | BUY | $54K |
| ◆ insider | 2025-04-30 | DIETRICH DOUGLAS T C-suite | BUY | $103K |
| ◆ insider | 2025-04-30 | ALDAG ERIK C-suite | BUY | $50K |
| ◆ insider | 2024-06-24 | MONAGLE DJ III C-suite | SELL | $1.2M |
| Congress | 2024-06-21 | Josh Gottheimer | SELL | $1K–$15K |
| ◆ insider | 2024-06-18 | Hastings Jonathan J Other | SELL | $1.8M |
| ◆ insider | 2024-06-17 | ARGIRAKIS BRETT C-suite | SELL | $190K |
| ◆ insider | 2024-06-12 | Hastings Jonathan J Other | SELL | $697K |
| ◆ insider | 2024-06-12 | Hastings Jonathan J Other | SELL | $69K |
| ◆ insider | 2024-06-03 | CUTLER ERIN Other | SELL | $19K |
| ◆ insider | 2024-05-29 | DIETRICH DOUGLAS T C-suite | SELL | $2.1M |
| ◆ insider | 2024-05-28 | DIETRICH DOUGLAS T C-suite | SELL | $1.0M |
| ◆ insider | 2024-05-28 | CIPOLLA MICHAEL Other | SELL | $1.0M |
| ◆ insider | 2024-05-21 | Hastings Jonathan J Other | SELL | $650K |
| ◆ insider | 2024-05-16 | JOHNSON KRISTINA M Director | BUY | $32K |
| ◆ insider | 2024-03-22 | MONAGLE DJ III C-suite | SELL | $87K |
FAQ Common questions
How much has Congress traded MTX?
6 disclosed buys and 2 sells of MTX (Minerals Technologies Inc.) appear in official congressional financial disclosures.
Is it legal for members of Congress to trade MTX?
Members of Congress may trade stocks but must disclose it under the STOCK Act. QuantCapitol tracks those public disclosures for transparency — nothing here is an accusation of wrongdoing or investment advice.
Where does this data come from?
Official US House Clerk and Senate electronic financial disclosures. Every trade links back to its original filing so you can verify it yourself.