AYTU · Aytu Biopharma, Inc · Shareholders & Ownership

$1.96 -0.08 (-3.92%) At close · Oct 19

Market Cap

$22.28M

10.87M

Volume · Oct 19 14.43K Avg daily vol (3M) 34.57K

Every disclosed holder of AYTU 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 AYTU

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

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	36	3,835,944	35.30%	Yes
Insiders (Forms 3, 4, 5)	8	558,855	5.14%	Yes
13D/G-only blocks	2	1,119,304	10.30%	Yes
Remaining	—	5,352,605	49.26%	Rest
Registered funds (N-PORT, not summed)	16	367,909	3.39%	No

Shares outstanding: 10,866,708, the issuer's latest cover-page count restated onto today's split basis.

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 AYTU

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	Nantahala Capital Management, LLC 13F CIK 1472322 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,086,812	10.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
2	Stonepine Capital Management, LLC 13F CIK 1440771 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	912,921	8.40%	+120,632	Jun 30, 2026	carried, not yet filed for the newest quarter
3	AWM Investment Company, Inc. 13F CIK 1535264 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	619,574	5.70%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Philotimo Fund, LP 13G CIK 1688522 · Investment adviser · Jun 6, 2025 Rule 13d-1(c), passive investor	573,358	5.28%	+407,090	Jun 6, 2025	Rule 13d-1(c), passive investor
5	Lytton, Laurence W. 13G CIK 1105806 · Unknown · Jun 30, 2026 Rule 13d-1(c), passive investor	545,946	5.02%	+39,341	Jun 30, 2026	Rule 13d-1(c), passive investor
6	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	261,146	2.40%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
7	Disbrow Joshua R. Insider CIK 1566240 · Jul 28, 2026 Director, issuer-wide	237,203	2.18%	+30,000	Jul 28, 2026	Director, issuer-wide
8	CROWN ADVISORS MANAGEMENT, INC. 13F CIK 1733248 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	200,000	1.84%	+55,000	Jun 30, 2026	carried, not yet filed for the newest quarter
9	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	169,000	1.56%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
10	DIADEMA PARTNERS LP 13F CIK 2026172 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	148,546	1.37%	-204,531	Jun 30, 2026	carried, not yet filed for the newest quarter
11	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	105,326	0.97%	-16,647	Jun 30, 2026	carried, not yet filed for the newest quarter
12	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	104,823	0.96%	+11,100	Jun 30, 2026	carried, not yet filed for the newest quarter
13	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	93,647	0.86%	+1,011	Jun 30, 2026	carried, not yet filed for the newest quarter
14	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	92,146	0.85%	+11,000	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
15	Disbrow Jarrett Insider CIK 1640724 · Jul 28, 2026 Chief Business Officer, issuer-wide	76,568	0.70%	+15,000	Jul 28, 2026	Chief Business Officer, issuer-wide
16	Selhorn Ryan J Insider CIK 1670673 · Jul 28, 2026 Chief Financial Officer, issuer-wide	74,743	0.69%	+25,000	Jul 28, 2026	Chief Financial Officer, issuer-wide
17	PYSZCZYMUKA GREG Insider CIK 1952920 · Jul 28, 2026 Chief Commercial Officer, issuer-wide	56,102	0.52%	+20,000	Jul 28, 2026	Chief Commercial Officer, issuer-wide
18	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	50,229	0.46%	+5,942	May 31, 2026	Fidelity Concord Street Trust, not summed
19	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	49,414	0.45%	+12,573	Jun 30, 2026	carried, not yet filed for the newest quarter
20	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	47,048	0.43%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
21	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	45,326	0.42%	+1,741	Jun 30, 2026	carried, not yet filed for the newest quarter
21.1	U.S. VECTOR EQUITY PORTFOLIO Fund S000000982 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	5,481	0.05%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
21.2	Dimensional US Sustainability Core 1 ETF Fund S000076639 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	4,805	0.04%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
21.3	U.S. Sustainability Core 1 Portfolio Fund S000020422 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	4,640	0.04%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
21.4	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	4,402	0.04%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
21.5	Dimensional U.S. Core Equity 2 ETF Fund S000070903 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	4,122	0.04%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
22	Persistent Asset Partners Ltd 13F CIK 2056052 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	37,984	0.35%	-54,913	Jun 30, 2026	carried, not yet filed for the newest quarter
23	DOCKERY CARL Insider CIK 1618149 · Jul 28, 2026 Director, issuer-wide	31,152	0.29%	+10,712	Jul 28, 2026	Director, issuer-wide
24	LIU VIVIAN H Insider CIK 1203467 · Jul 28, 2026 Director, issuer-wide	29,825	0.27%	+10,000	Jul 28, 2026	Director, issuer-wide
25	JAIN ABHINAV Insider CIK 1981291 · Jul 28, 2026 Director, issuer-wide	29,500	0.27%	+10,000	Jul 28, 2026	Director, issuer-wide
26	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	27,925	0.26%	+8,756	Jun 30, 2026	carried, not yet filed for the newest quarter
27	BELLEVUE ASSET MANAGEMENT, LLC 13F CIK 1801619 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	25,013	0.23%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
28	Donofrio John Jr. Insider CIK 1679841 · Jul 28, 2026 Director, issuer-wide	23,762	0.22%	+10,000	Jul 28, 2026	Director, issuer-wide
29	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	22,793	0.21%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
30	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	21,416	0.20%	-166	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	11,929	0.11%	+2,176	May 31, 2026	Fidelity Concord Street Trust, not summed
32	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	10,237	0.09%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	Daytona Street Capital LLC 13F CIK 2101936 · Unknown · Sep 30, 2026	10,000	0.09%	0	Sep 30, 2026
34	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	9,757	0.09%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
35	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	2,377	0.02%	+714	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Tower Research Capital LLC (TRC) 13F CIK 1533421 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2,232	0.02%	+668	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Omni Small-Cap Value Fund Fund S000033567 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	1,500	0.01%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
38	OSAIC HOLDINGS, INC. 13F CIK 1677044 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	462	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
39	ROYAL BANK OF CANADA 13F CIK 1000275 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	378	0.00%	+342	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Blackstone Alternative Multi-Strategy Fund Fund S000045538 · Registered fund · Jun 30, 2026 Blackstone Alternative Investment Funds, not summed	200	0.00%	0	Jun 30, 2026	Blackstone Alternative Investment Funds, not summed
41	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	154	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
42	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	127	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
43	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	125	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
44	BARCLAYS PLC 13F CIK 312069 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	50	0.00%	+50	Jun 30, 2026	carried, not yet filed for the newest quarter
45	GROUP ONE TRADING LLC 13F CIK 932540 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	37	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
46	BNP PARIBAS ARBITRAGE, SA 13F CIK 1166588 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	23	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
47	Rockefeller Capital Management L.P. 13F CIK 1739439 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	10	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
48	SBI Securities Co., Ltd. 13F CIK 1851815 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	10	0.00%	-1	Jun 30, 2026	carried, not yet filed for the newest quarter
49	Arax Advisory Partners 13F CIK 1586767 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2	0.00%	+2	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Caitong International Asset Management Co., Ltd 13F CIK 1963355 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter

4 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 53 holders

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Key facts CIK 1385818 CUSIP 054754858 13F (30d) 1 filings 1 filers Visit website Investor relations