Bob Rosenthal
CIK 1203911 · Executive Chairman · last filed 2026-02-18
Bob Rosenthal is an Executive Chairman who has filed 61 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for BRKRP, was dated Feb 18, 2026. Across all open-market trades the lifetime net is −$280.8K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $18.5M across reported positions. 45 SEC filings were submitted jointly with SAFEGUARD SCIENTIFICS INC.
"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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
BRKR price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
BOSTON, MA 02116
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| BRKRP | Director | 38,781 | $425.71 | $16.51M | $0 | 1 | 2026-02-18 |
| BRKR | Director | 34,261 | $58.23 | $2.00M | -$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
61 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-02-18 | BRKRP | Grant (A) | +4,520 | $0 | EDGAR |
| 2025-02-19 | BRKR | Grant (A) | +3,298 | $0 | EDGAR |
| 2024-08-16 | BRKR | Mixed | +7,816 | -$3.7K | EDGAR |
| 2024-08-15 | BRKR | Notice (144) | −4,684 | -$287.9K | EDGAR |
| 2024-01-09 | BRKR | Grant (A) | +2,377 | $0 | EDGAR |
| 2023-01-09 | BRKR | Grant (A) | +1,970 | $0 | EDGAR |
| 2022-11-21 | INVIVO THERAPEUTICS HOLDINGS CORP. (NVIV) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-04-18 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +5,400 | $26.6K | EDGAR |
| 2022-01-18 | SAFEGUARD SCIENTIFICS INC (SFE) Delisted | Grant (A) | +3,913 | $27.8K | EDGAR |
| 2022-01-06 | BRKR | Grant (A) | +1,841 | $0 | EDGAR |
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.