KLRS · Kalaris Therapeutics, Inc. · Shareholders & Ownership

$2.14 +0.09 (+4.39%)

Market Cap

$48.80M

23.80M

Volume · Nov 4 20K Avg daily vol (3M) 66.51K

Every disclosed holder of KLRS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns KLRS

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	54	18,025,505	75.72%	Yes
Insiders (Forms 3, 4, 5)	9	26,052,523	109.44%	Yes
13D/G-only blocks	4	2,562,696	10.77%	Yes
Remaining	—	22,835,743	-95.93%	Negative
Registered funds (N-PORT, not summed)	19	600,436	2.52%	No

Shares outstanding: 23,804,981, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of KLRS

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	AKKARAJU SRINIVAS Insider CIK 1253170 · May 20, 2026 Director, 10% Owner, issuer-wide	12,915,520	54.26%	-32,561	May 20, 2026	Director, 10% Owner, issuer-wide
2	SAMSARA BIOCAPITAL, LLC 13F CIK 1744967 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	12,881,175	54.11%	-66,906	Jun 30, 2026	carried, not yet filed for the newest quarter
3	Samsara BioCapital GP, LLC Insider CIK 1888829 · Mar 18, 2025 10% Owner, issuer-wide	11,448,081	48.09%	—	Mar 18, 2025	10% Owner, issuer-wide
4	Samsara BioCapital, L.P. 13D CIK 1699737 · Unknown · May 20, 2026 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands not summed	10,657,028	44.77%	-791,053	May 20, 2026	not summed
5	Coastlands Capital LP 13G CIK 2068530 · Investment adviser · Oct 19, 2026 Rule 13d-1(b), qualified institution	1,355,119	5.69%	—	Oct 19, 2026	Rule 13d-1(b), qualified institution
6	RTW INVESTMENTS, LP 13F CIK 1493215 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,300,000	5.46%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
7	Sinha Vikas Insider CIK 1337845 · Feb 21, 2025 Chief Financial Officer, issuer-wide	774,118	3.25%	-303	Feb 21, 2025	Chief Financial Officer, issuer-wide
8	GILEAD SCIENCES, INC. 13G CIK 882095 · Unknown · Mar 18, 2025 Rule 13d-1(c), passive investor	723,273	3.04%	—	Mar 18, 2025	Rule 13d-1(c), passive investor
9	Alyeska Investment Group, L.P. 13F CIK 1453072 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	572,687	2.41%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
10	Ferrara Napoleone Insider CIK 1744779 · Mar 18, 2025 Director, issuer-wide	504,000	2.12%	—	Mar 18, 2025	Director, issuer-wide
11	Siren, L.L.C. 13F CIK 2005245 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	435,798	1.83%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
12	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	398,712	1.67%	+143,364	Jun 30, 2026	carried, not yet filed for the newest quarter
13	Ikarian Capital, LLC 13F CIK 1778253 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	360,000	1.51%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
14	PATEL SAMIR CHANDRAKANT Insider CIK 1277966 · Mar 18, 2025 Director, issuer-wide	352,800	1.48%	—	Mar 18, 2025	Director, issuer-wide
15	Invus Public Equities, L.P. 13G CIK 2005369 · Unknown · Jun 30, 2025 Rule 13d-1(c), passive investor	282,586	1.19%	—	Jun 30, 2025	Rule 13d-1(c), passive investor
16	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	262,131	1.10%	+255,947	Jun 30, 2026	carried, not yet filed for the newest quarter
17	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	255,337	1.07%	+78,610	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
18	EcoR1 Capital, LLC 13G CIK 1587114 · Registered investment adviser · Mar 31, 2025 Rule 13d-1(b), qualified institution	201,718	0.85%	—	Mar 31, 2025	Rule 13d-1(b), qualified institution
19	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	149,351	0.63%	+83,200	Jun 30, 2026	carried, not yet filed for the newest quarter
20	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	139,201	0.58%	+71,322	Jun 30, 2026	carried, not yet filed for the newest quarter
21	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	137,373	0.58%	+64,754	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
22	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	114,037	0.48%	+26,492	Jun 30, 2026	carried, not yet filed for the newest quarter
23	ADAR1 Capital Management, LLC 13F CIK 1940272 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	100,000	0.42%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Woodline Partners LP 13F CIK 1784547 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	100,000	0.42%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
25	WHI TRUST Co LLC 13F CIK 2013902 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	97,493	0.41%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
26	RAYMOND JAMES FINANCIAL INC 13F CIK 720005 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	97,164	0.41%	-21,723	Jun 30, 2026	carried, not yet filed for the newest quarter
27	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	95,772	0.40%	+95,772	Jun 30, 2026	carried, not yet filed for the newest quarter
28	BOOTHBAY FUND MANAGEMENT, LLC 13F CIK 1549230 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	92,261	0.39%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Verdad Advisers, LP 13F CIK 1812822 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	80,297	0.34%	+80,297	Jun 30, 2026	carried, not yet filed for the newest quarter
30	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	72,326	0.30%	+33,982	Jun 30, 2026	carried, not yet filed for the newest quarter
31	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	66,179	0.28%	+29,462	Jun 30, 2026	carried, not yet filed for the newest quarter
32	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	54,442	0.23%	+18,399	Jun 30, 2026	carried, not yet filed for the newest quarter
32.1	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	25,924	0.11%	+17,225	Jun 30, 2026	iShares Trust, not summed
33	Belpointe Asset Management LLC 13F CIK 1721242 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	40,000	0.17%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
34	Fortis Capital Advisors, LLC 13F CIK 1959790 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	40,000	0.17%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Pale Fire Capital SE 13F CIK 1922318 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	39,626	0.17%	+39,626	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Squarepoint Ops LLC 13F CIK 1642575 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	38,775	0.16%	-998	Jun 30, 2026	carried, not yet filed for the newest quarter
37	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	32,500	0.14%	+10,000	Jun 30, 2026	carried, not yet filed for the newest quarter
37.1	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	32,500	0.14%	+10,000	Jun 30, 2026	Bridgeway Funds, Inc., not summed
38	Brainard Diana Insider CIK 1818070 · Nov 19, 2024 Director, issuer-wide	31,451	0.13%	-378	Nov 19, 2024	Director, issuer-wide
39	Stonepine Capital Management, LLC 13F CIK 1440771 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	30,122	0.13%	+9,722	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Connor, Clark & Lunn Investment Management Ltd. 13F CIK 1596800 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	30,007	0.13%	+16,352	Jun 30, 2026	carried, not yet filed for the newest quarter
41	Trexquant Investment LP 13F CIK 1633445 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	29,737	0.12%	+29,737	Jun 30, 2026	carried, not yet filed for the newest quarter
42	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	26,510	0.11%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
43	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	25,839	0.11%	+11,390	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Velan Capital Investment Management LP 13F CIK 1848809 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	25,000	0.11%	+7,000	Jun 30, 2026	carried, not yet filed for the newest quarter
45	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	23,847	0.10%	-6,803	Jun 30, 2026	carried, not yet filed for the newest quarter
46	WealthTrust Asset Management, LLC 13F CIK 1867894 · Registered investment adviser · Sep 30, 2026	23,604	0.10%	+3,188	Sep 30, 2026
47	Miller Edward Insider CIK 1619252 · Feb 21, 2025 General Counsel, issuer-wide	21,575	0.09%	-106	Feb 21, 2025	General Counsel, issuer-wide
48	Independent Advisor Alliance 13F CIK 1696899 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	18,125	0.08%	+3,895	Jun 30, 2026	carried, not yet filed for the newest quarter
49	RBF Capital, LLC 13F CIK 1134621 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	17,391	0.07%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Quadrature Capital Ltd 13F CIK 1651424 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	16,527	0.07%	+16,527	Jun 30, 2026	carried, not yet filed for the newest quarter

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 77 holders

Create a free account to page through every holder, filter by source and group by ultimate parent.

Key facts CIK 1754068 CUSIP 482929106 13F (30d) 4 filings 4 filers Visit website Investor relations