Stolper Mark

CIK 0001281961

Executive VP and CFODirector

Filings

Latest Mar 5, 2026

Issuers covered

Showing

18 of 18

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Track record

2 of 2 open-market trades scored (100% price coverage). Returns are signed: a +10% move on a sale shows as -10% (insider was wrong).

Horizon	Trades	Win rate	Avg	Median	Best	Worst
30 days	2	50%	+2.2%	+2.2%	+8.6%	-4.1%
90 days	2	100%	+1.7%	+1.7%	+2.4%	+1.0%
180 days	2	50%	-7.3%	-7.3%	+13.8%	-28.4%
365 days	1	100%	+3.6%	+3.6%	+3.6%	+3.6%

Companies where Stolper Mark has filed

Ticker	Issuer	Filings	Last filed
RDNT	Radnet, Inc.	14	Mar 5, 2026
CHRS	Coherus Biosciences, Inc.	4	Jun 5, 2024

18 Form 4 / 4-A filings, newest first

Filed	Issuer	Top transaction	Shares	Price	Value
Mar 5, 2026	RDNTRadnet, Inc.	AGrant	18,228	$0.00	$0
Dec 12, 2025	RDNTRadnet, Inc.	MExercise	35,703	$6.07	$216,717
Sep 18, 2025	RDNTRadnet, Inc.	SSale	35,000	$73.89	$2,586,150
Jan 10, 2025	RDNTRadnet, Inc.	AGrant	22,889	$0.00	$0
Dec 18, 2024	RDNTRadnet, Inc.	GGift	275	$0.00	$0
Jun 12, 2024	RDNTRadnet, Inc.	SSale	25,000	$61.27	$1,531,750
Jun 5, 2024	CHRSCoherus Biosciences, Inc.	Holdings only	-	-	-
Mar 4, 2024	RDNTRadnet, Inc.	AGrant	14,072	$0.00	$0
Jan 10, 2024	RDNTRadnet, Inc.	Holdings only	-	-	-
Jun 9, 2023	CHRSCoherus Biosciences, Inc.	Holdings only	-	-	-
May 16, 2023	RDNTRadnet, Inc.	GGift	900	$0.00	$0
May 8, 2023	RDNTRadnet, Inc.	GGift	375	$0.00	$0
May 8, 2023	RDNTRadnet, Inc.A	Holdings only	-	-	-
Mar 2, 2023	RDNTRadnet, Inc.	Holdings only	-	-	-
Jan 5, 2023	RDNTRadnet, Inc.	Holdings only	-	-	-
Feb 11, 2022	CHRSCoherus Biosciences, Inc.A	Holdings only	-	-	-
Jan 10, 2022	CHRSCoherus Biosciences, Inc.	Holdings only	-	-	-
Jan 6, 2022	RDNTRadnet, Inc.	Holdings only	-	-	-

Showing 1-18 of 18

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Real-time Form 4 intelligence. Smarter insider tracking.