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Disclosery

KLRS KALARIS THERAPEUTICS INC

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COM (common), issuer CIK 1754068

55 managers (57 13F filers) reported a position in KLRS shares at 2026-06-30, 18,035,981 shares in all. 10 filers opened a position and 11 filers sold out during the quarter.

Managers
55
13F filers
57
New
10
Added
18
Reduced
9
Sold out
11
Shares held by filers
18,035,981

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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, LLC12,881,175$52.4M4.31%-66,90613F-HRTimeline
RTW INVESTMENTS, LP1,300,000$5.29M0.05%013F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.572,687$2.33M0.01%013F-HRTimelineGroup
VANGUARD GROUP INCgroup of 3 filers holding465,616$1.9M+172,826Timeline
Siren, L.L.C.in group Siren, L.L.C.435,798$1.77M0.04%013F-HRTimelineGroup
Ikarian Capital, LLC360,000$1.47M0.24%013F-HRTimeline
UBS Group AGin group UBS Group AG262,131$1.07M<0.01%+255,94713F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC149,351$608K<0.01%+83,20013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP139,201$567K<0.01%+71,32213F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC114,037$464K<0.01%+26,49213F-HRTimelineGroup
Woodline Partners LP100,000$407K<0.01%013F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC100,000$407K0.02%013F-HRTimelineGroup
WHI TRUST Co LLC97,493$397K0.26%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC97,164$395K<0.01%-21,72313F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC95,772$390K<0.01%new13F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC92,261$376K0.01%013F-HRTimeline
Verdad Advisers, LP80,297$327K0.31%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY72,326$294K<0.01%+33,98213F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.54,442$222K<0.01%+18,39913F-HRTimelineGroup
Belpointe Asset Management LLC40,000$163K0.01%013F-HRTimeline
Fortis Capital Advisors, LLC40,000$163K0.02%013F-HRTimeline
Pale Fire Capital SEin group Pale Fire Capital39,626$161K0.01%new13F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC38,775$158K<0.01%-99813F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC32,500$132K<0.01%+10,00013F-HRTimeline
Stonepine Capital Management, LLC30,122$123K0.09%+9,72213F-HR/ATimeline
Connor, Clark & Lunn Investment Managem…30,007$122K<0.01%+16,35213F-HRTimeline
Trexquant Investment LP29,737$121K<0.01%new13F-HRTimeline
STATE STREET CORPin group STATE STREET CORP26,510$108K<0.01%013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP25,839$105K<0.01%+11,39013F-HRTimelineGroup
Velan Capital Investment Management LP25,000$102K0.06%+7,00013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP23,847$97.1K<0.01%-6,80313F-HRTimelineGroup
WealthTrust Asset Management, LLC20,416$83.1K0.04%+8,00013F-HRTimeline
Independent Advisor Alliance18,125$73.8K<0.01%+3,89513F-HRTimeline
RBF Capital, LLC17,391$70.8K<0.01%013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd16,527$67.3K<0.01%new13F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC16,054$65.3K<0.01%-94,44913F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP15,958$65K<0.01%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…14,221$57.9K<0.01%-38,46313F-HRTimelineGroup
HRT FINANCIAL LP13,723$55K<0.01%+2,10613F-HRTimeline
NANO CAP NEW MILLENNIUM GROWTH FUND L P12,500$50.9K0.04%+8,50013F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC10,845$44K<0.01%new13F-HRTimelineGroup
Sigma Planning Corp10,167$41.4K<0.01%new13F-HRTimeline
FMR LLCin group FMR LLC7,806$31.8K<0.01%013F-HRTimelineGroup
Integrated Wealth Concepts LLC5,000$20.4K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,560$10.4K<0.01%+2,42113F-HRTimelineGroup
Steward Partners Investment Advisory, L…2,215$9.02K<0.01%013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC303$1.23K<0.01%-4,97713F-HRTimelineGroup
Strengthening Families & Communities, L…268$1.09K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS52$212<0.01%-60013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO50$211<0.01%013F-HRTimelineGroup
Parallel Advisors, LLC49$199<0.01%013F-HRTimeline
HARBOUR INVESTMENTS, INC.13$53<0.01%013F-HRTimeline
Caitong International Asset Management …7$28<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.5$20<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA12$00%-9113F-HRTimelineGroupValue filed as zero, left out of ratios.