ROBERT L CLARK
CIK 1479324 · last filed 2026-05-21
ROBERT L CLARK is a corporate insider who has filed 141 SEC Form 4 insider transactions across 1 company since 2010. The most recent filing, for MTX, was dated May 21, 2026. Across all open-market trades the lifetime net is +$24.6K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $31.2K across reported positions.
"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.
$31.2K
1
141
$24.6K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MTX | Director | 400 | $78.12 | $31.2K | $24.6K | 141 | 2026-05-21 |
Recent Filings
141 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-21 | MTX | Grant (A) | — | $0 | EDGAR |
| 2026-03-10 | MTX | Grant (A) | — | $0 | EDGAR |
| 2025-12-08 | MTX | Grant (A) | — | $0 | EDGAR |
| 2025-09-09 | MTX | Grant (A) | — | $0 | EDGAR |
| 2025-06-16 | MTX | Grant (A) | — | $0 | EDGAR |
| 2025-05-16 | MTX | Grant (A) | — | $0 | EDGAR |
| 2025-03-11 | MTX | Grant (A) | — | $0 | EDGAR |
| 2024-12-09 | MTX | Grant (A) | — | $0 | EDGAR |
| 2024-09-09 | MTX | Grant (A) | — | $0 | EDGAR |
| 2024-06-14 | MTX | Grant (A) | — | $0 | EDGAR |