MARK HOROWITZ

CIK 1192508 · Chief Scientist · last filed 2011-11-02

MARK HOROWITZ is a Chief Scientist who has filed 34 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing shows the insider sold $346.0K of RMBS on Nov 2, 2011. Across all open-market trades the lifetime net is −$11.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $81.7M 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.

Disclosed Exposure

$81.68M

Companies

1

Total Filings

34

Lifetime Open-Market Net

-$11.81M

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
RMBS	Director	791,584	$103.19	$81.68M	-$11.81M	34	2011-11-02

Recent Filings

34 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
2011-11-02	RMBS	Sell (S)	−20,000	-$346.0K	EDGAR
2011-10-14	RMBS	Sell (S)	−20,000	-$320.0K	EDGAR
2011-05-03	RMBS	Sell (S)	−20,000	-$391.8K	EDGAR
2011-04-01	RMBS	Sell (S)	−20,000	-$392.3K	EDGAR
2011-03-16	RMBS	Exer (M)	+20,000	$316.0K	EDGAR
2011-03-02	RMBS	Sell (S)	−20,000	-$405.8K	EDGAR
2011-02-03	RMBS	Mixed	−20,070	-$459.4K	EDGAR
2011-01-04	RMBS	Sell (S)	−20,000	-$413.0K	EDGAR
2010-12-01	RMBS	Sell (S)	−20,000	-$404.0K	EDGAR
2010-11-02	RMBS	Sell (S)	−20,000	-$394.9K	EDGAR

Showing 1–10 of 34

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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.