Robert W Musslewhite
CIK 1390194 · Chief Executive Officer · last filed 2026-06-24
"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
$2.13M
Companies
4
Total Filings
114
Lifetime Open-Market Net
-$23.41M
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 |
|---|---|---|---|---|---|---|---|
| CSGP | Director | 26,539 | $29.82 | $791.3K | $0 | 7 | 2026-06-24 |
| CAH | Director | 2,116 | $233.55 | $494.2K | $0 | 2 | 2025-11-06 |
| DH | Chief Executive Officer | 1,201,638 | $0.70 | $841.1K | $0 | 12 | 2024-01-09 |
| ADVISORY BOARD CO (ABCO) Delisted | Chief Executive Officer | 525,800 | — | — | -$23.41M | 91 | 2017-04-20 |
Recent Filings · Page 3 of 12
114 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 |
|---|---|---|---|---|---|
| 2020-09-25 | CSGP | Grant (A) | +214 | $0 | EDGAR |
| 2017-11-21 | — | Disp (D) | −257,950 | $0 | |
| 2017-11-21 | — | Tax (F) | −6,325 | -$300.8K | |
| 2017-04-20 | ADVISORY BOARD CO (ABCO) Delisted | Mixed | +4,200 | -$204.4K | EDGAR |
| 2017-04-12 | ADVISORY BOARD CO (ABCO) Delisted | Mixed | +10,978 | -$627.7K | EDGAR |
| 2017-03-30 | ADVISORY BOARD CO (ABCO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2017-02-15 | ADVISORY BOARD CO (ABCO) Delisted | Mixed | — | -$168.6K | EDGAR |
| 2017-01-11 | ADVISORY BOARD CO (ABCO) Delisted | Mixed | — | -$105.5K | EDGAR |
| 2016-12-14 | ADVISORY BOARD CO (ABCO) Delisted | Mixed | — | -$95.1K | EDGAR |
| 2016-11-16 | ADVISORY BOARD CO (ABCO) Delisted | Mixed | — | -$89.7K | 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.