MATTHEW LANIGAN
CIK 1672978 · President & CEO · last filed 2026-06-05
MATTHEW LANIGAN is a President & CEO who has filed 40 SEC Form 4 insider transactions across 1 company since 2016. The most recent filing shows the insider sold $2.4M of NR on Jun 5, 2026. Across all open-market trades the lifetime net is −$3.6M, making them a net seller over the disclosed history.
"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.
$0
1
40
-$3.63M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| NPK International Inc. (NR) Delisted | President & CEO | 1,024,948 | $7.25 | $7.43M | -$3.63M | 38 | 2026-06-05 |
Recent Filings
40 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-05 | NPK International Inc. (NR) Delisted | Sell (S) | −167,375 | -$2.42M | EDGAR |
| 2026-06-03 | NPKI | Notice (144) | −167,375 | -$2.44M | EDGAR |
| 2026-06-03 | NPK International Inc. (NR) Delisted | Mixed | +10,639 | -$1.28M | EDGAR |
| 2026-05-21 | NPK International Inc. (NR) Delisted | Grant (A) | +85,771 | $0 | EDGAR |
| 2025-10-06 | NPK International Inc. (NR) Delisted | Gift (G) | −770,249 | $0 | EDGAR |
| 2025-09-04 | NPK International Inc. (NR) Delisted | Mixed | — | -$6.1K | EDGAR |
| 2025-08-26 | NPK International Inc. (NR) Delisted | Mixed | — | -$414.9K | EDGAR |
| 2025-08-22 | NPKI | Notice (144) | −69,896 | -$699.0K | EDGAR |
| 2025-06-03 | NPK International Inc. (NR) Delisted | Mixed | +104,430 | -$844.7K | EDGAR |
| 2025-05-16 | NPK International Inc. (NR) Delisted | Grant (A) | +212,667 | $0 | EDGAR |
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.