DOUGLAS T DIETRICH
CIK 1408736 · CHAIRMAN AND CEO · last filed 2026-05-28
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$15.80M
Companies
2
Total Filings
86
Lifetime Open-Market Net
-$8.98M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Recent Filings · Page 9 of 9
86 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2010-02-05 | MTX | Grant (A) | — | $0 | EDGAR |
| 2010-02-01 | MTX | Mixed | +876 | -$36.6K | EDGAR |
| 2009-08-04 | MTX | Mixed | +205 | -$6.4K | EDGAR |
| 2009-03-03 | MTX | Mixed | +581 | -$10.7K | EDGAR |
| 2008-08-04 | MTX | Mixed | +218 | -$8.5K | EDGAR |
| 2008-02-29 | MTX | Grant (A) | — | $0 | EDGAR |
Showing 81–86 of 86
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Page 9 of 9
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.