▲ BUY
7
/ 10
Conviction
$ Value
$103K
Shares
2,000
Price
$52
Filed
May 1
▶ Why this score? (7/10)
- ✓ Open market buy (+3)
- ✓ C-suite insider (+2)
- ✓ Director (+1)
- ✓ Not a 10b5-1 plan (+1)
Insider
Name
DIETRICH DOUGLAS T
Title
CHAIRMAN AND CEO
CIK
0001408736
Roles
Director
Officer
Transaction Details
Transaction Date
2025-04-30
Code
P
Table
Non-Derivative
Ownership
Direct
Equity Swap
No
Shares After
161,675
Footnotes
The information contained in this report is based on a Plan Statement dated as of April 30, 2025.
Filing Info
DIETRICH DOUGLAS T's History
| Date | Ticker | Type | Value |
|---|---|---|---|
| 2026-02-24 | KMT | A | $26K |
| 2026-01-30 | KMT | M | $29K |
| 2026-01-30 | KMT | F | $860 |
| 2026-01-30 | KMT | M | $0 |
| 2026-01-26 | MTX | M | $0 |
| 2026-01-26 | MTX | F | $424K |
| 2026-01-26 | MTX | M | $0 |
| 2026-01-23 | MTX | M | $0 |
| 2026-01-23 | MTX | F | $419K |
| 2026-01-23 | MTX | M | $0 |
Other Insiders at MTX (90d)
| Insider | Bought | Sold | Last |
|---|---|---|---|
|
CIPOLLA MICHAEL
VICE PRESIDENT
|
— | — | 2026-01-26 |
| JOHNSON KRISTINA M | — | — | 2026-03-06 |
| CARMOLA JOHN J | — | — | 2026-03-06 |
|
DIETRICH DOUGLAS T
CHAIRMAN AND CEO
|
— | — | 2026-01-26 |
|
MONAGLE DJ III
Group President
|
— | — | 2026-01-26 |
| Deans Alison Ann | — | — | 2026-03-06 |
| CLARK ROBERT L | — | — | 2026-03-06 |
| Breunig Joseph C. | — | — | 2026-03-06 |
|
Hastings Jonathan J
Senior Vice President
|
— | — | 2026-01-26 |
| ROBINSON MARC E | — | — | 2026-03-06 |
|
ARGIRAKIS BRETT
Group President
|
— | — | 2026-01-26 |
| PITTMAN CAROLYN K | — | — | 2026-04-01 |
| FEDER FRANKLIN | — | — | 2026-04-01 |
|
CUTLER ERIN
VP, Human Resources
|
— | — | 2026-01-26 |
| Motwani Rocky | — | — | 2026-03-06 |
|
ALDAG ERIK
SVP FINANCE AND TREASURY, CFO
|
— | — | 2026-01-26 |
|
JORDAN TIMOTHY
Vice President
|
— | — | 2026-01-26 |