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Disclosery

KLRS KALARIS THERAPEUTICS INC

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COM (common), issuer CIK 1754068

56 managers (58 13F filers) reported a position in KLRS shares at 2026-03-31, 18,578,771 shares in all. 12 filers opened a position and 7 filers sold out during the quarter.

Managers
56
13F filers
58
New
12
Added
16
Reduced
7
Sold out
7
Shares held by filers
18,578,771

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
SAMSARA BIOCAPITAL, LLC12,948,081$74.7M7.26%013F-HRTimeline
RTW INVESTMENTS, LP1,300,000$7.5M0.07%013F-HRTimeline
Paradigm Biocapital Advisors LPin group Paradigm Biocapital Advisors …700,000$4.04M0.08%013F-HRTimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.572,687$3.27M0.01%+169,13613F-HRTimelineGroup
Siren, L.L.C.in group Siren, L.L.C.435,798$2.51M0.07%013F-HRTimelineGroup
Ikarian Capital, LLCin group Ikarian Capital, LLC360,000$2.08M0.3%013F-HRTimelineGroup
Propel Bio Management, LLC295,771$1.72M1.08%+253,71813F-HRTimeline
VANGUARD GROUP INCgroup of 3 filers holding292,790$1.69MnewTimeline
Kalehua Capital Management LLC135,585$782K0.55%-4,31613F-HR/ATimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC118,887$686K<0.01%+30,45113F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC110,503$638K<0.01%+76,20013F-HRTimelineGroup
Woodline Partners LP100,000$577K<0.01%013F-HR/ATimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC100,000$577K0.03%013F-HRTimelineGroup
WHI TRUST Co LLC97,493$563K0.42%013F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC92,261$532K0.01%013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC87,545$505K<0.01%+4,89813F-HRTimelineGroup
Simplify Asset Management Inc.87,426$504K0.01%+67,35213F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP67,879$392K<0.01%-4,99713F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC66,151$382K<0.01%-21,60013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC59,534$344K<0.01%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…52,684$304K<0.01%+39,82813F-HRTimelineGroup
683 Capital Management, LLCin group 683 Capital Management, LLC45,000$260K0.02%-35,59013F-HRTimelineGroup
Belpointe Asset Management LLC40,000$231K0.01%013F-HRTimeline
Fortis Capital Advisors, LLC40,000$231K0.03%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC39,773$229K<0.01%+14,40613F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY38,344$221K<0.01%+10,39613F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.36,043$208K<0.01%-2,41113F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP30,650$177K<0.01%+2,89113F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP26,510$153K<0.01%+1,10013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC22,500$130K<0.01%013F-HRTimeline
Stonepine Capital Management, LLC20,400$118K0.1%new13F-HRTimeline
Velan Capital Investment Management LP18,000$104K0.07%new13F-HRTimeline
RBF Capital, LLC17,391$100K<0.01%013F-HR/ATimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP14,449$83.4K<0.01%+79513F-HRTimelineGroup
Independent Advisor Alliance14,230$82.1K<0.01%new13F-HRTimeline
Connor, Clark & Lunn Investment Managem…13,655$78.8K<0.01%+3,49613F-HRTimeline
WealthTrust Asset Management, LLC12,416$71.6K0.04%new13F-HRTimeline
HRT FINANCIAL LP11,617$67K<0.01%new13F-HRTimeline
Qube Research & Technologies Ltd11,103$64.1K<0.01%new13F-HRTimeline
Johnson Financial Group, Inc.in group Johnson Financial Group, Inc.10,000$57.7K<0.01%013F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC8,703$50.2K<0.01%+8,70213F-HRTimelineGroup
FMR LLCin group FMR LLC7,806$45K<0.01%013F-HRTimelineGroup
UBS Group AGin group UBS Group AG6,184$35.7K<0.01%+3,49313F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC5,280$30.5K<0.01%-78513F-HRTimelineGroup
NANO CAP NEW MILLENNIUM GROWTH FUND L P4,000$23.1K0.02%013F-HRTimeline
Steward Partners Investment Advisory, L…2,215$12.8K<0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS652$3.76K<0.01%+60013F-HRTimelineGroup
Strengthening Families & Communities, L…268$1.55K<0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA103$1K<0.01%-1013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…139$802<0.01%new13F-HRTimelineGroup
Fortitude Family Office, LLC114$658<0.01%013F-HRTimeline
Parallel Advisors, LLC49$283<0.01%013F-HR/ATimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO50$265<0.01%013F-HR/ATimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.34$196<0.01%new13F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.13$75<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.5$29<0.01%013F-HRTimeline