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 2 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 |
|---|---|---|---|---|---|
| 2023-07-11 | DH | Tax (F) | −20,016 | -$213.6K | EDGAR |
| 2023-05-08 | DH | Tax (F) | −53,587 | -$530.5K | EDGAR |
| 2023-04-11 | DH | Tax (F) | −15,616 | -$163.5K | EDGAR |
| 2023-02-21 | DH | Grant (A) | +368,422 | $0 | EDGAR |
| 2023-01-10 | DH | Tax (F) | −14,026 | -$146.0K | EDGAR |
| 2022-10-12 | DH | Tax (F) | −70,658 | -$1.05M | EDGAR |
| 2022-09-15 | CSGP | Grant (A) | +3,380 | $0 | EDGAR |
| 2022-05-05 | DH | Grant (A) | +416,655 | $0 | EDGAR |
| 2021-10-08 | DH | Grant (A) | +650,000 | $0 | EDGAR |
| 2021-09-17 | CSGP | Grant (A) | +2,811 | $250.0K | 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.