BOB ROSENTHAL
CIK 1203911 · Executive Chairman · last filed 2026-02-18
"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
$20.15M
Companies
5
Total Filings
61
Lifetime Open-Market Net
-$280.8K
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 |
|---|---|---|---|---|---|---|---|
| BRKRP | Director | 38,781 | $463.98 | $17.99M | $0 | 1 | 2026-02-18 |
| BRKR | Director | 34,261 | $62.91 | $2.16M | -$295.7K | 12 | 2025-02-19 |
| INVIVO THERAPEUTICS HOLDINGS CORP. (NVIV) Delisted | Director | — | $0.32 | — | $0 | 2 | 2022-11-21 |
| SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Director | 81,855 | $0.46 | $37.2K | $15.0K | 43 | 2022-04-18 |
| MZT Holdings, Inc. (MZT) Delisted | Director | — | — | — | $0 | 2 | 2007-06-12 |
Recent Filings · Page 2 of 7
61 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 |
|---|---|---|---|---|---|
| 2021-10-18 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +3,236 | $26.9K | EDGAR |
| 2021-07-16 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +3,803 | $30.2K | EDGAR |
| 2021-06-30 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +10,423 | $0 | EDGAR |
| 2021-04-16 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +3,995 | $26.3K | EDGAR |
| 2021-03-22 | INVIVO THERAPEUTICS HOLDINGS CORP. (NVIV) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-01-19 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +4,281 | $28.4K | EDGAR |
| 2021-01-07 | BRKR | Grant (A) | +2,302 | $0 | EDGAR |
| 2020-10-16 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +4,918 | $29.5K | EDGAR |
| 2020-07-16 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +4,176 | $26.2K | EDGAR |
| 2020-07-01 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +10,892 | $0 | 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.