CORBIN J JR ROBERTSON
CIK 1194888 · Chairman and CEO · last filed 2026-02-12
"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
$106.22M
Companies
4
Total Filings
82
Lifetime Open-Market Net
$36.0K
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 |
|---|---|---|---|---|---|---|---|
| NRP | Chairman and CEO | 798,976 | $98.97 | $79.07M | $4.51M | 43 | 2026-02-12 |
| KLXE | Director | 58,006 | $2.10 | $121.8K | -$4.47M | 17 | 2026-02-02 |
| Quintana Maritime LTD (QMARW) Delisted | Director | 5,120,616 | — | — | $0 | 2 | 2007-12-27 |
| NSP | Chairman and CEO | 508,168 | $53.18 | $27.02M | $0 | 5 | 2007-04-04 |
Recent Filings · Page 4 of 9
82 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 |
|---|---|---|---|---|---|
| 2020-03-20 | — | Exer (M) | +23,474 | $0 | |
| 2020-02-19 | — | Grant (A) | — | $0 | |
| 2020-02-14 | NRP | Grant (A) | — | $0 | EDGAR |
| 2020-02-11 | — | Exer (M) | +23,474 | $0 | |
| 2019-09-17 | — | Buy (P) | +10,199 | $19.8K | |
| 2019-09-16 | — | Buy (P) | +4,111 | $7.5K | |
| 2019-09-13 | — | Buy (P) | +4,200 | $7.7K | |
| 2019-09-12 | — | Buy (P) | +9,571 | $16.2K | |
| 2019-09-11 | — | Buy (P) | +9,316 | $15.9K | |
| 2019-09-09 | — | Buy (P) | +13,897 | $24.1K |
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.