DOUGLAS W MAYGER
CIK 1447454 · Senior Vice President · last filed 2023-01-27
"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
$3.55M
Companies
1
Total Filings
70
Lifetime Open-Market Net
-$5.38M
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.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MTX | Senior Vice President | 47,124 | $75.28 | $3.55M | -$5.38M | 70 | 2023-01-27 |
Recent Filings · Page 3 of 7
70 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2018-01-23 | MTX | Mixed | +2,424 | -$78.5K | EDGAR |
| 2018-01-18 | MTX | Mixed | +437 | -$17.1K | EDGAR |
| 2017-02-16 | MTX | Sell (S) | −790 | -$62.5K | EDGAR |
| 2017-02-10 | MTX | Mixed | +789 | -$315.0K | EDGAR |
| 2017-01-25 | MTX | Mixed | +1,101 | -$40.1K | EDGAR |
| 2017-01-24 | MTX | Mixed | +1,489 | -$54.3K | EDGAR |
| 2017-01-23 | MTX | Mixed | +800 | -$36.6K | EDGAR |
| 2017-01-19 | MTX | Grant (A) | — | $0 | EDGAR |
| 2016-08-23 | MTX | Mixed | +1,580 | -$106.3K | EDGAR |
| 2016-08-19 | MTX | Sell (S) | −2,825 | -$199.9K | EDGAR |
Form 4 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.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.