ROBERT H NIEHAUS
CIK 1241677 · Chairman, GCP · last filed 2026-07-02
"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
$47.24M
Companies
11
Total Filings
110
Lifetime Open-Market Net
-$89.29M
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 |
|---|---|---|---|---|---|---|---|
| ZETA | Director | 671,772 | $25.56 | $17.17M | -$24.97M | 11 | 2026-07-02 |
| IRDM | Director | 316,910 | $48.31 | $15.31M | -$14.64M | 41 | 2026-07-02 |
| HEARTLAND PAYMENT SYSTEMS INC (HPY) Delisted | Director | 112,722 | — | — | -$4.75M | 23 | 2016-03-11 |
| GREENHILL & CO INC (GHL) Delisted | Chairman, GCP | 125,631 | $14.99 | $1.88M | -$47.09M | 11 | 2010-02-04 |
| Iridium Communications Inc. (IRDMW) Delisted | Director | — | — | — | $0 | 1 | 2009-09-30 |
| Iridium Communications Inc. (GHQ.WS) Delisted | Senior Vice President | 398,276 | — | — | $1.94M | 5 | 2009-09-02 |
| EXCO RESOURCES INC (XCO) Delisted | Director | 15,622 | — | — | $0 | 9 | 2009-04-03 |
| Crusader Energy Group Inc. (KRU) Delisted | Director | 126,596 | — | — | $210.1K | 2 | 2008-12-08 |
| Iridium Communications Inc. (GHQ.U) Delisted | Senior Vice President | 200,000 | — | — | $0 | 1 | 2008-03-13 |
| CCI | Director | 197,054 | $74.92 | $14.76M | $0 | 1 | 2007-03-14 |
| AMERICAN ITALIAN PASTA CO (ECR) Delisted | Director | 1,325 | — | — | $0 | 1 | 2007-02-20 |
Recent Filings · Page 3 of 11
110 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 |
|---|---|---|---|---|---|
| 2024-01-08 | IRDM | Grant (A) | +5,036 | $0 | EDGAR |
| 2024-01-03 | IRDM | Grant (A) | +376 | $0 | EDGAR |
| 2023-10-03 | IRDM | Grant (A) | +576 | $15.0K | EDGAR |
| 2023-07-05 | ZETA | Grant (A) | +17,564 | $0 | EDGAR |
| 2023-07-03 | IRDM | Grant (A) | +248 | $0 | EDGAR |
| 2023-05-02 | IRDM | Mixed | — | -$3.21M | EDGAR |
| 2023-05-01 | IRDM | Notice (144) | −55,776 | -$3.54M | EDGAR |
| 2023-04-03 | IRDM | Grant (A) | +250 | $0 | EDGAR |
| 2023-02-24 | IRDM | Sell (S) | −70,000 | -$4.40M | EDGAR |
| 2023-02-17 | ZETA | Sell (S) | −980,735 | -$10.02M | 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.