Kalaris Therapeutics Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:KLRS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
20 Mar 26	SellUS$12,869	Brett Hagen	Individual		1,915	US$6.72
18 Dec 25	BuyUS$5,000,006	Samsara BioCapital LLC	Company		479,847	US$10.42

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of KLRS?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	940,908	3.95%
Hedge Funds	1,300,000	5.46%
Individual Insiders	1,431,746	6.02%
General Public	2,958,767	12.4%
Institutions	4,260,274	17.9%
VC/PE Firms	12,900,583	54.2%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 27.2%.

Top Shareholders

Top 25 shareholders own 84.23% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
54.2%	Samsara BioCapital LLC	12,900,583	US$55.7m	-0.37%	5.75%
5.46%	RTW Investments, LP	1,300,000	US$5.6m	0%	0.06%
3.05%	ElevateBio, LLC	724,989	US$3.1m	0%	no data
2.94%	Paradigm Biocapital Advisors LP	700,000	US$3.0m	0%	0.07%
2.41%	Alyeska Investment Group, L.P.	572,687	US$2.5m	41.9%	0.01%
2.22%	Samir Patel	528,289	US$2.3m	0%	no data
2.12%	Napoleone Ferrara	504,000	US$2.2m	0%	no data
1.83%	Artal Group S.A.	435,798	US$1.9m	0%	0.04%
1.51%	Ikarian Capital, LLC	360,000	US$1.6m	0%	0.28%
1.07%	Vanguard Capital Management, LLC	255,348	US$1.1m	0%	no data
0.91%	Morana Jovan-Embiricos	215,744	US$932.0k	0%	no data
0.88%	Propel Bio Management, LLC	208,345	US$900.0k	395%	0.88%
0.57%	Kalehua Capital Management LLC	135,585	US$585.7k	-3.09%	0.38%
0.55%	David Hallal	130,554	US$564.0k	0%	no data
0.53%	Globeways Holdings II Limited	126,359	US$545.9k	0%	no data
0.5%	Raymond James Financial, Inc.	118,887	US$513.6k	34.4%	no data
0.42%	The Goldman Sachs Group, Inc.	100,224	US$433.0k	349%	no data
0.42%	Woodline Partners LP	100,000	US$432.0k	0%	no data
0.42%	ADAR1 Capital Management, LLC	100,000	US$432.0k	0%	0.03%
0.41%	Whi Trust Co Llc	97,493	US$421.2k	0%	0.32%
0.39%	Boothbay Fund Management, LLC	92,261	US$398.6k	0%	0.01%
0.38%	F2 Mg Limited	89,560	US$386.9k	0%	no data
0.37%	Geode Capital Management, LLC	87,545	US$378.2k	5.93%	no data
0.37%	Simplify Asset Management Inc.	87,426	US$377.7k	336%	0.01%
0.29%	Marshall Wace LLP	67,879	US$293.2k	-6.86%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/06/28 02:04
End of Day Share Price	2026/06/26 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Kalaris Therapeutics, Inc. is covered by 8 analysts. 8 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Daniil Gataulin	Chardan Capital Markets, LLC
Jonathan Wolleben	Citizens JMP Securities, LLC
Marc Goodman	Leerink Partners LLC