Brunn Carsten

CIK 0001760229

President and CEODirector

Filings

Latest Jan 8, 2026

Issuers covered

Showing

14 of 14

Page 1

Track record

3 of 10 open-market trades scored (30% price coverage) - 7 issuers without price data. 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	3	33%	-5.7%	-9.8%	+10.8%	-18.0%
90 days	3	100%	+26.9%	+26.8%	+42.7%	+11.4%
180 days	2	100%	+35.7%	+35.7%	+38.9%	+32.5%
365 days	2	100%	+59.5%	+59.5%	+60.1%	+59.0%

Issuers

Companies where Brunn Carsten has filed

Ticker	Issuer	Filings	Last filed
RNAC	Cartesian Therapeutics, Inc.	13	Jan 8, 2026
SURF	Surface Oncology, Inc.	1	Jun 30, 2022

All filings

14 Form 4 / 4-A filings, newest first

Filed	Issuer	Top transaction	Shares	Price	Value
Jan 8, 2026	RNACCartesian Therapeutics, Inc.	SSale	23,766	$6.8197	$162,077
Jan 6, 2026	RNACCartesian Therapeutics, Inc.	AGrant	143,200	$0.00	$0
Jan 7, 2025	RNACCartesian Therapeutics, Inc.	SSale	8,708	$16.8322	$146,575
Jan 6, 2025	RNACCartesian Therapeutics, Inc.	AGrant	57,500	$0.00	$0
Jan 4, 2024	RNACCartesian Therapeutics, Inc.	AGrant	4,654,100	$0.00	$0
Nov 15, 2023	RNACCartesian Therapeutics, Inc.	DDisposition	282,800	$2.06	$582,568
Sep 26, 2023	RNACCartesian Therapeutics, Inc.	SSale	2,932	$1.06	$3,108
Jan 6, 2023	RNACCartesian Therapeutics, Inc.	SSale	27,549	$1.1337	$31,232
Jan 4, 2023	RNACCartesian Therapeutics, Inc.	AGrant	282,800	$0.00	$0
Jun 30, 2022	SURFSurface Oncology, Inc.	Holdings only	-	-	-
Jun 3, 2022	RNACCartesian Therapeutics, Inc.	MExercise	10,938	$0.00	$0
Mar 3, 2022	RNACCartesian Therapeutics, Inc.	SSale	5,443	$1.8121	$9,863
Jan 7, 2022	RNACCartesian Therapeutics, Inc.	SSale	13,597	$3.0859	$41,959
Jan 5, 2022	RNACCartesian Therapeutics, Inc.	AGrant	226,300	$0.00	$0

Showing 1-14 of 14

Page 1 of 1

Real-time Form 4 intelligence. Smarter insider tracking.

Filed		Top transaction	Shares	Price	Value