ARTV · Artiva Biotherapeutics, Inc. · Shareholders & Ownership

$6.56 +0.67 (+11.38%)

Russell 2000 member Rebalance outlook locked

Market Cap

$315.83M

48.89M

Volume · Oct 20 446K Avg daily vol (3M) 406.59K

Every disclosed holder of ARTV 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 ARTV

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)	75	40,404,727	82.64%	Yes
Insiders (Forms 3, 4, 5)	10	9,038,144	18.49%	Yes
13D/G-only blocks	3	5,595,875	11.45%	Yes
Remaining	—	6,148,625	-12.58%	Negative
Registered funds (N-PORT, not summed)	62	2,644,757	5.41%	No

Shares outstanding: 48,890,121, 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 ARTV

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	RA CAPITAL MANAGEMENT, L.P. Insider CIK 1346824 · Jul 31, 2026 Director, issuer-wide, not summed	17,329,570	35.45%	—	Jul 31, 2026	Director, issuer-wide, not summed
1.1	RA CAPITAL MANAGEMENT, L.P. 13D CIK 1346824 · Registered investment adviser · Jul 22, 2026 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands not summed	18,415,956	37.67%	+2,038,488	Jul 22, 2026	not summed
1.2	RA CAPITAL MANAGEMENT, L.P. 13F CIK 1346824 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	17,955,642	36.73%	+8,102,340	Jun 30, 2026	carried, not yet filed for the newest quarter
2	GC Corp 13D CIK 1931382 · Holding company · May 11, 2026 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands not summed	5,999,703	12.27%	—	May 11, 2026	not summed
2.1	GC Corp. Insider CIK 1931382 · May 11, 2026 10% Owner, issuer-wide	5,999,703	12.27%	+1,432,291	May 11, 2026	10% Owner, issuer-wide
3	VIKING GLOBAL INVESTORS LP 13F CIK 1103804 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,604,166	5.33%	+2,604,166	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Blackstone Inc. 13F CIK 1393818 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,403,437	4.92%	+2,403,437	Jun 30, 2026	carried, not yet filed for the newest quarter
5	5AM Venture Management, LLC 13F CIK 1799883 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,353,304	4.81%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
6	5AM Ventures VI, L.P. 13G CIK 1753037 · Unknown · Jun 30, 2026 Rule 13d-1(c), passive investor	2,353,304	4.81%	0	Jun 30, 2026	Rule 13d-1(c), passive investor
7	Venrock Adviser, LLC 13F CIK 1615982 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,043,596	4.18%	+434,027	Jun 30, 2026	carried, not yet filed for the newest quarter
8	Venrock Healthcare Capital Partners III, L.P. 13G CIK 1738048 · Unknown · Jun 30, 2026 Rule 13d-1(c), passive investor	2,043,596	4.18%	+434,027	Jun 30, 2026	Rule 13d-1(c), passive investor
9	FRANKLIN RESOURCES INC 13F CIK 38777 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,997,223	4.09%	+1,476,896	Jun 30, 2026	carried, not yet filed for the newest quarter
9.1	Franklin Biotechnology Discovery Fund Fund S000006882 · Registered fund · Jul 31, 2026 Franklin Strategic Series, not summed	542,371	1.11%	+349,500	Jul 31, 2026	Franklin Strategic Series, not summed
9.2	Franklin Small Cap Growth Fund Fund S000006889 · Registered fund · Jul 31, 2026 Franklin Strategic Series, not summed	456,468	0.93%	—	Jul 31, 2026	Franklin Strategic Series, not summed
10	Caligan Partners LP 13F CIK 1727492 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,736,111	3.55%	+1,736,111	Jun 30, 2026	carried, not yet filed for the newest quarter
11	Aslan Fred Insider CIK 1909362 · Oct 6, 2026 Director, President and CEO, issuer-wide	1,519,606	3.11%	-23,463	Oct 6, 2026	Director, President and CEO, issuer-wide
12	venBio Global Strategic Fund III, L.P. 13G CIK 1739920 · Unknown · Mar 31, 2025 Rule 13d-1(c), passive investor	1,198,975	2.45%	-320,996	Mar 31, 2025	Rule 13d-1(c), passive investor
13	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	981,815	2.01%	+774,129	Jun 30, 2026	carried, not yet filed for the newest quarter
14	SAMSARA BIOCAPITAL, LLC 13F CIK 1744967 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	954,861	1.95%	+954,861	Jun 30, 2026	carried, not yet filed for the newest quarter
15	Blue Owl Capital Holdings LP 13F CIK 1858703 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	874,542	1.79%	+874,542	Jun 30, 2026	carried, not yet filed for the newest quarter
16	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	699,899	1.43%	+551,700	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
17	Propel Bio Management, LLC 13F CIK 1969764 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	696,436	1.42%	+550,067	Jun 30, 2026	carried, not yet filed for the newest quarter
18	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	694,726	1.42%	+481,338	Jun 30, 2026	carried, not yet filed for the newest quarter
18.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	140,593	0.29%	—	Jun 30, 2026	iShares Trust, not summed
18.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	20,825	0.04%	—	Jun 30, 2026	iShares Trust, not summed
18.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	15,784	0.03%	+6,939	Jun 30, 2026	iShares Trust, not summed
18.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	12,570	0.03%	—	Jun 30, 2026	Quantitative Master Series LLC, not summed
18.5	BlackRock Small Cap Index V.I. Fund Fund S000059910 · Registered fund · Jun 30, 2026 BlackRock Variable Series Funds, Inc., not summed	1,284	0.00%	—	Jun 30, 2026	BlackRock Variable Series Funds, Inc., not summed
19	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	609,376	1.25%	+593,506	Jun 30, 2026	carried, not yet filed for the newest quarter
20	SILVERARC CAPITAL MANAGEMENT, LLC 13F CIK 1816307 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	525,000	1.07%	+525,000	Jun 30, 2026	carried, not yet filed for the newest quarter
21	Bush Jennifer Insider CIK 1621152 · Oct 5, 2026 COO, CLO, Secy, Compliance Off, issuer-wide	366,159	0.75%	-8,370	Oct 5, 2026	COO, CLO, Secy, Compliance Off, issuer-wide
22	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	353,845	0.72%	+252,150	Jun 30, 2026	carried, not yet filed for the newest quarter
23	BOOTHBAY FUND MANAGEMENT, LLC 13F CIK 1549230 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	314,375	0.64%	+314,375	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Horan Christopher Insider CIK 1736819 · Oct 5, 2026 Chief Tech Operations Officer, issuer-wide	312,744	0.64%	-10,340	Oct 5, 2026	Chief Tech Operations Officer, issuer-wide
25	Nantahala Capital Management, LLC 13F CIK 1472322 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	300,000	0.61%	+300,000	Jun 30, 2026	carried, not yet filed for the newest quarter
26	Revelation Capital Management, LLC 13F CIK 1801811 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	299,311	0.61%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Alyeska Investment Group, L.P. 13F CIK 1453072 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	273,615	0.56%	+173,615	Jun 30, 2026	carried, not yet filed for the newest quarter
28	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	269,149	0.55%	+209,662	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
29	ACUTA CAPITAL PARTNERS, LLC 13F CIK 1582844 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	260,416	0.53%	+260,416	Jun 30, 2026	carried, not yet filed for the newest quarter
30	Huston Thad Allen Insider CIK 1706052 · Mar 10, 2026 Chief Financial Officer, issuer-wide	220,000	0.45%	—	Mar 10, 2026	Chief Financial Officer, issuer-wide
31	KVP Capital Advisors, LP 13F CIK 1858198 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	200,000	0.41%	+200,000	Jun 30, 2026	carried, not yet filed for the newest quarter
32	WELLINGTON MANAGEMENT GROUP LLP 13F CIK 902219 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	194,108	0.40%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	184,020	0.38%	+182,493	Jun 30, 2026	carried, not yet filed for the newest quarter
34	SEVEN GRAND MANAGERS, LLC 13F CIK 1909126 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	175,000	0.36%	+175,000	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Banerjee Subhashis Insider CIK 2065633 · Oct 5, 2026 Chief Medical Officer, issuer-wide	169,848	0.35%	-1,099	Oct 5, 2026	Chief Medical Officer, issuer-wide
36	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	165,764	0.34%	+129,940	Jun 30, 2026	carried, not yet filed for the newest quarter
36.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	2,400	0.00%	—	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
37	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	151,000	0.31%	+70,962	Jun 30, 2026	carried, not yet filed for the newest quarter
38	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	148,393	0.30%	+115,583	Jun 30, 2026	carried, not yet filed for the newest quarter
39	Raymon Heather Insider CIK 2028466 · May 19, 2026 SVP, Research and Development, issuer-wide	148,228	0.30%	-3,095	May 19, 2026	SVP, Research and Development, issuer-wide
40	Miralles Gines Diego Insider CIK 1773413 · Sep 9, 2026 Director, issuer-wide	122,500	0.25%	+45,000	Sep 9, 2026	Director, issuer-wide
41	ADAR1 Capital Management, LLC 13F CIK 1940272 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	118,624	0.24%	+118,624	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Simplify Asset Management Inc. 13F CIK 1846368 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	101,355	0.21%	+78,125	Jun 30, 2026	carried, not yet filed for the newest quarter
42.1	Simplify Propel Opportunities ETF Fund S000078061 · Registered fund · Jun 30, 2026 Simplify Exchange Traded Funds, not summed	101,355	0.21%	+78,125	Jun 30, 2026	Simplify Exchange Traded Funds, not summed
43	Krishnamohan Neha Insider CIK 1866171 · Nov 15, 2025 Chief Financial Officer, issuer-wide	99,356	0.20%	-3,490	Nov 15, 2025	Chief Financial Officer, issuer-wide
44	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	85,000	0.17%	+50,000	Jun 30, 2026	carried, not yet filed for the newest quarter
44.1	Ultra-Small Company Fund Fund S000004423 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	50,000	0.10%	—	Jun 30, 2026	Bridgeway Funds, Inc., not summed
44.2	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	35,000	0.07%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
45	Graef Thorsten Insider CIK 1581192 · Feb 26, 2025 Chief Medical Officer, issuer-wide	80,000	0.16%	+60,000	Feb 26, 2025	Chief Medical Officer, issuer-wide
46	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	78,575	0.16%	-36,466	Jun 30, 2026	carried, not yet filed for the newest quarter
47	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	76,423	0.16%	+64,215	Jun 30, 2026	carried, not yet filed for the newest quarter
47.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	1,739	0.00%	—	Jun 30, 2026	Northern Funds, not summed
48	DAFNA Capital Management LLC 13F CIK 1389933 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	67,101	0.14%	+67,101	Jun 30, 2026	carried, not yet filed for the newest quarter
49	Quadrature Capital Ltd 13F CIK 1651424 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	49,345	0.10%	+49,345	Jun 30, 2026	carried, not yet filed for the newest quarter
50	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	44,815	0.09%	+24,445	Jun 30, 2026	carried, not yet filed for the newest quarter
50.1	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	27,426	0.06%	+19,255	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
50.2	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	5,863	0.01%	+5,185	Jul 31, 2026	Dimensional ETF Trust, not summed
50.3	U.S. Social Core Equity 2 Portfolio Fund S000018154 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	3,040	0.01%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
50.4	Dimensional US Core Equity 1 ETF Fund S000081780 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	3,029	0.01%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
50.5	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	2,634	0.01%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed

1 more nested rows are not shown here; Every filing lists them all.

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 122 holders

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Key facts CIK 1817241 CUSIP 04317A107 13F (30d) 5 filings 5 filers Visit website Investor relations