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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 $17.3M 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.

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Disclosed Exposure

$17.33M

Companies

5

Total Filings

61

Lifetime Open-Market Net

-$280.8K

Filer Profile

Reported Address
20 NEWBURY ST
BOSTON, MA 02116
Related Filers
SAFEGUARD SCIENTIFICS INC — 45 joint filings, latest 2022-04-18
BRUKER CORP — 15 joint filings, latest 2026-02-18
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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 $399.57 $15.50M $0 1 2026-02-18
BRKR Director 34,261 $53.43 $1.83M -$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
Insider 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
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
Showing 1–10 of 61
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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.