Richard J Benjamin

CIK 1296322 · Chief Medical Officer · last filed 2026-03-16

Richard J Benjamin is a Chief Medical Officer who has filed 42 SEC Form 4 insider transactions across 1 company since 2015. The most recent filing, for CERS, was dated May 1, 2026. Across all open-market trades the lifetime net is −$5.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.3M 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

$2.27M

Companies

1

Total Filings

42

Lifetime Open-Market Net

-$5.77M

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
CERS	Chief Medical Officer	777,361	$2.92	$2.27M	-$5.77M	36	2026-03-16

Recent Filings

42 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
2026-05-01	CERS	Notice (144)	−76,209	-$214.6K	EDGAR
2026-03-16	CERS	Sell (S)	−101,740	-$168.6K	EDGAR
2026-03-10	CERS	Mixed	−70,674	-$250.9K	EDGAR
2026-03-09	CERS	Notice (144)	−40,426	-$76.0K	EDGAR
2026-03-09	CERS	Mixed	−70,674	-$250.9K	EDGAR
2026-03-05	CERS	Notice (144)	−61,233	-$126.3K	EDGAR
2026-03-04	CERS	Grant (A)	+264,000	$0	EDGAR
2025-03-17	CERS	Sell (S)	−49,024	-$71.1K	EDGAR
2025-03-10	CERS	Mixed	+340,426	-$39.2K	EDGAR
2025-03-05	CERS	Mixed	−43,634	-$90.6K	EDGAR

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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.