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STEPHEN D CHUBB

CIK 1144771 · Chairman and CEO · last filed 2021-02-24

STEPHEN D CHUBB is a Chairman and CEO who has filed 52 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for CRL, was dated Feb 24, 2021. Across all open-market trades the lifetime net is −$5.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $11.7M across reported positions.

"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

$11.69M

Companies

2

Total Filings

52

Lifetime Open-Market Net

-$5.47M

Filer Profile

Reported Address
C/O MATRITECH INC
330 NEVADA STREET
NEWTON, MA 02460
Formerly Known As
CHUBB STEPHEN (2002–2002)
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
CRL Director 40,529 $288.50 $11.69M -$5.47M 51 2021-02-24
MZT Holdings, Inc. (MZT) Delisted Chairman and CEO — — — $0 1 2007-04-04

Recent Filings

52 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
2021-02-24 CRL Mixed +2,872 -$747 EDGAR
2020-08-19 CRL Mixed −2,625 -$217.7K EDGAR
2020-05-13 CRL Grant (A) +741 $0 EDGAR
2020-02-28 CRL Mixed +4,706 -$865 EDGAR
2019-05-23 CRL Mixed +997 $0 EDGAR
2019-02-21 CRL Mixed — -$487.1K EDGAR
2018-05-15 CRL Grant (A) +2,004 $0 EDGAR
2018-02-16 CRL Mixed +4,868 -$482 EDGAR
2017-05-16 CRL Grant (A) +2,436 $0 EDGAR
2016-12-05 CRL Mixed +6,146 -$633 EDGAR
Showing 1–10 of 52
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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.