Form 4 for MTX MINERALS TECHNOLOGIES INC
Accepted 2026-05-18 09:58:02 ET · period of report 2026-05-14 · accession 0000891014-26-000113 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-05-18 09:58 | 2026-05-14 | MTX | DIETRICH DOUGLAS T | COB AND CEO, Dir | M - OptEx | $78.03 | +21.6K | 197.5K | +12% | +$1.68M |
| D | 2026-05-18 09:58 | 2026-05-14 | MTX | DIETRICH DOUGLAS T | COB AND CEO, Dir | S - Sale+OE | $81.53 | -21.6K | 176.0K | -11% | -$1.76M |
| D | 2026-05-18 09:58 | 2026-05-14 | MTX | DIETRICH DOUGLAS T | COB AND CEO, Dir | M - OptEx | $0.00 | -21.6K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-05-14 | M | A | 21,568 | $78.03 | 197,541 | D | — | — | |
| 2 | Common | Common Stock | 2026-05-14 | S | D | 21,568 | $81.53 | 175,973 | D | — | — | (F1) Weighted average price representing high of $81.960 and low of $81.140. |
| 3 | Derivative | Employee Stock Options (Right to Buy) | 2026-05-14 | M | D | 21,568 | $0.00 | 0 | D | $78.03 · — to 2027-01-17 | 21,568 Common Stock | (F3) The options were granted on January 17, 2017 and vested in three equal annual installments beginning on January 17, 2018. |