Kalaris Therapeutics Ownership | Who Owns Kalaris Therapeutics?

Kalaris Therapeutics Ownership Summary

Kalaris Therapeutics is owned by 329.68% institutional investors, 17.19% insiders. Samsara biocapital is the largest institutional shareholder, holding 282.45% of KLRS shares.

KLRS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Kalaris Therapeutics	329.68%	17.19%	-246.86%
Sector	Healthcare Stocks	488.17%	11.08%	-399.26%
Industry	Biotech Stocks	307.00%	11.11%	-218.12%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Samsara biocapital	11.45M	282.45%	$30.57M
Tang capital management	360.86K	8.90%	$963.49K
Siren	282.59K	6.97%	$754.50K
Redmile group	82.95K	2.05%	$221.49K
Blackrock funding, inc. /de	38.16K	0.94%	$101.88K
Xtx topco	24.23K	0.60%	$64.70K
Rbf capital	17.39K	0.43%	$46.43K
Marshall wace, llp	14.12K	0.35%	$37.69K
Raymond james financial	2.63K	0.06%	$7.02K
Farther finance advisors	33.00	0.00%	$88.00

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Samsara biocapital	11.45M	6.25%	$30.57M
Tang capital management	360.86K	0.05%	$963.49K
Siren	282.59K	0.04%	$754.50K
Redmile group	82.95K	0.02%	$221.49K
Xtx topco	24.23K	0.00%	$64.70K
Rbf capital	17.39K	0.00%	$46.43K
Blackrock funding, inc. /de	38.16K	-	$101.88K
Woodline partners lp	-	-	-
Raymond james financial	2.63K	-	$7.02K
Coldstream capital management	-	-	-

Top Buyers

Holder	Shares	% Assets	Change
Tang capital management	360.86K	0.05%	51.64K
Xtx topco	24.23K	0.00%	24.23K
Blackrock funding, inc. /de	38.16K	-	10.64K
Raymond james financial	2.63K	-	2.63K
Marshall wace, llp	14.12K	-	-

Top Sellers

Holder	Shares	% Assets	Change
Ecor1 capital	-	-	-201.72K
Woodline partners lp	-	-	-21.52K
Coldstream capital management	-	-	-208.00
Eversource wealth advisors	-	-	-30.00
Marshall wace, llp	14.12K	-	-

New Positions

Holder	Shares	% Assets	Change	Value
Xtx topco	24.23K	0.00%	24.23K	$64.70K
Raymond james financial	2.63K	-	2.63K	$7.02K

Sold Out

Holder	Change
Eversource wealth advisors	-30.00
Coldstream capital management	-208.00
Woodline partners lp	-21.52K
Ecor1 capital	-201.72K

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	29	-6.45%	13,362,268	-3.69%	329	5.99%	12	-61.29%	7	-
Mar 31, 2025	31	-	13,874,350	-	74	-	31	-	-	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Mar 26, 2025	Hagen Brett R	Chief Accounting Officer	Sell	$8.14K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	-
2025 Q1	-	1

KLRS Ownership FAQ

Who Owns Kalaris Therapeutics?

Kalaris Therapeutics shareholders are primarily institutional investors at 329.68%, followed by 17.19% insiders and -246.87% retail investors. The average institutional ownership in Kalaris Therapeutics's industry, Biotech Stocks , is 307.00%, which Kalaris Therapeutics exceeds.

Who owns the most shares of Kalaris Therapeutics?

Kalaris Therapeutics’s largest shareholders are Samsara biocapital (11.45M shares, 282.45%), Tang capital management (360.86K shares, 8.90%), and Siren (282.59K shares, 6.97%). Together, they hold 298.32% of Kalaris Therapeutics’s total shares outstanding.

Does Blackrock own Kalaris Therapeutics?

BlackRock is not among the top 10 institutional shareholders of Kalaris Therapeutics.

Who is Kalaris Therapeutics’s biggest shareholder by percentage of total assets invested?

Samsara biocapital is Kalaris Therapeutics’s biggest shareholder by percentage of total assets invested, with 6.25% of its assets in 11.45M Kalaris Therapeutics shares, valued at 30.57M$.

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