Updated Jul 16, 2026
MONAGLE DJ III is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market sales: $1.43M.

Dj Iii Monagle is listed in SEC filings as Group President of Minerals Technologies Inc. The Minerals Technologies context indicates the company mines, produces, and sells mineral-based products with two main segments: Consumer & Specialties and Engineered Solutions. In the cited filing, there were no stock purchases or sales reported by this insider, and this is the sole filing referencing the individual.
| Role | Group President |
|---|---|
| Notability | 15/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-01-27 | MTX | MINERALS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 1.9K | $68.89 | $134K |
| 2026-01-27 | MTX | MINERALS TECHNOLOGIES INC | M — Option exercise | 3.5K | $0.00 | |
| 2026-01-27 | MTX | MINERALS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 2.1K | $68.77 | $144K |
| 2026-01-27 | MTX | MINERALS TECHNOLOGIES INC | M — Option exercise | 3.8K | $0.00 | |
| 2026-01-23 | MTX | MINERALS TECHNOLOGIES INC | F — Tax withholding / forfeiture | 2.0K | $66.92 | $136K |
| 2026-01-23 | MTX | MINERALS TECHNOLOGIES INC | M — Option exercise | 3.5K | $0.00 | |
| 2025-12-31 | MTX | MINERALS TECHNOLOGIES INC | S — Open-market sale | 23.1K | $61.90 | $1.43M |
| 2025-12-31 | MTX | MINERALS TECHNOLOGIES INC | M — Option exercise | 23.1K | $38.28 | $884K |
Dj Iii Monagle is listed in SEC filings as Group President of Minerals Technologies Inc. The Minerals Technologies context indicates the company mines, produces, and sells mineral-based products with two main segments: Consumer & Specialties and Engineered Solutions. In the cited filing, there were no stock purchases or sales reported by this insider, and this is the sole filin…
Recorded transactions: 0 open-market purchases () and 1 open-market sales ($1.43M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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