13F Insight
DOSSIER · 13F Holders · Q1 2026Defensive growthQuality
KLRS

KALARIS THERAPEUTICS INC

57 institutions still hold KALARIS THERAPEUTICS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 482929106·57 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 2.3%
vs prior quarter
13F value held
$105M
58.0% inst. owned
of float
Holders
57
-87 QoQ
filers reporting
Activity
+71 / −71
+857 added · −709 reduced
this quarter
Concentration
70.98%
Samsara BioCapital, LLC #1
top holder share
AI Holders Summary · Q1 2026

57 institutions reported KLRS in Q1 2026. Samsara BioCapital, LLC leads at 71.0% of the visible book. -87 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Samsara BioCapital, LLC
CIK 0001744967
$75M12.9M7.26%Q1 202602
RTW INVESTMENTS, LP
CIK 0001493215
$8M1.3M0.07%Q1 202603
Paradigm Biocapital Advisors LP
CIK 0001855655
$4M700K0.08%Q1 202604
Alyeska Investment Group, L.P.
CIK 0001453072
$3M404K0.01%Q4 202505
Siren, L.L.C.
CIK 0002005245
$3M436K0.07%Q1 202606
Ikarian Capital, LLC
CIK 0001778253
$2M360K0.17%Q1 202607
Propel Bio Management, LLC
CIK 0001969764
$2M296K1.08%Q1 202608
Kalehua Capital Management LLC
CIK 0002106181
$2M271K0.60%Q1 202609
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$1M255K0.00%Q1 202610
RAYMOND JAMES FINANCIAL INC
CIK 0000720005
$685,978119K0.00%Q1 202611
683 Capital Management, LLC
CIK 0001404574
$680,18081K0.03%Q4 202512
GOLDMAN SACHS GROUP INC
CIK 0000886982
$637,602111K0.00%Q1 202613
MARSHALL WACE, LLP
CIK 0001318757
$615,07473K0.00%Q4 202514
ADAR1 Capital Management, LLC
CIK 0001940272
$577,000100K0.03%Q1 202615
Woodline Partners LP
CIK 0001784547
$577,000100K0.00%Q1 202616
WHI TRUST Co LLC
CIK 0002013902
$562,53597K0.42%Q1 202617
BOOTHBAY FUND MANAGEMENT, LLC
CIK 0001549230
$532,34692K0.01%Q1 202618
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$505,34188K0.00%Q1 202619
Simplify Asset Management Inc.
CIK 0001846368
$504,44887K0.01%Q1 202620
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$381,69166K0.00%Q1 2026
Page 1 of 3
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