ASTC · ASTROTECH Corp · Shareholders & Ownership

$4.75 -0.19 (-3.75%) At close · Oct 19

Market Cap

$9.75M

2.01M

Volume · Oct 19 23.3K Avg daily vol (3M) 125.6K

Every disclosed holder of ASTC 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 ASTC

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)	19	205,965	10.25%	Yes
Insiders (Forms 3, 4, 5)	10	322,407	16.05%	Yes
13D/G-only blocks	1	100	0.01%	Yes
Remaining	—	1,480,578	73.70%	Rest
Registered funds (N-PORT, not summed)	6	39,293	1.96%	No

Shares outstanding: 2,009,050, 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 ASTC

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	Pickens Thomas Boone III Insider CIK 1310519 · May 14, 2025 Director, CEO, issuer-wide	181,385	9.03%	+41,124	May 14, 2025	Director, CEO, issuer-wide
2	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	54,799	2.73%	+54,799	Jun 30, 2026	carried, not yet filed for the newest quarter
3	FNY Investment Advisers, LLC 13F CIK 1742998 · Unknown · Sep 30, 2026	34,000	1.69%	+34,000	Sep 30, 2026
4	Wilkinson Tom Insider CIK 2136521 · Sep 30, 2026 Director, issuer-wide	32,254	1.61%	+1,331	Sep 30, 2026	Director, issuer-wide
5	J. Safra Sarasin Holding AG 13F CIK 1890222 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	27,300	1.36%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
6	Wilkinson Thomas Wiley Insider CIK 1667502 · May 14, 2025 Director, issuer-wide	23,862	1.19%	+3,000	May 14, 2025	Director, issuer-wide
7	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	22,356	1.11%	+13,151	Jun 30, 2026	carried, not yet filed for the newest quarter
8	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	22,356	1.11%	+13,151	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
9	MCFARLAND ROBERT N Insider CIK 1247669 · Sep 30, 2026 Director, issuer-wide	22,292	1.11%	+1,331	Sep 30, 2026	Director, issuer-wide
10	Stober Eric Insider CIK 1592683 · Sep 30, 2026 Director, issuer-wide	21,127	1.05%	+1,473	Sep 30, 2026	Director, issuer-wide
11	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	20,188	1.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
12	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	15,533	0.77%	-3,814	Jun 30, 2026	carried, not yet filed for the newest quarter
13	Winn Charles Arch Insider CIK 2048929 · Sep 30, 2026 Director, issuer-wide	14,431	0.72%	+1,331	Sep 30, 2026	Director, issuer-wide
14	Halinski John William Insider CIK 2049376 · Sep 30, 2026 Director, issuer-wide	13,542	0.67%	+1,331	Sep 30, 2026	Director, issuer-wide
15	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	11,068	0.55%	+11,068	Jun 30, 2026	carried, not yet filed for the newest quarter
16	SCS Capital Management LLC 13F CIK 1303159 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	11,000	0.55%	-761	Jun 30, 2026	carried, not yet filed for the newest quarter
17	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	8,474	0.42%	-31	May 31, 2026	Fidelity Concord Street Trust, not summed
18	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	7,956	0.40%	+3,617	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Canas Jennifer Insider CIK 2071373 · May 22, 2025 Chief Financial Officer, issuer-wide	5,250	0.26%	—	May 22, 2025	Chief Financial Officer, issuer-wide
20	Badugu Nihanth Insider CIK 2083731 · Jul 22, 2026 Chief Operating Officer, issuer-wide	5,000	0.25%	—	Jul 22, 2026	Chief Operating Officer, issuer-wide
21	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	4,014	0.20%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
22	Kreps Matthew Insider CIK 2144936 · Sep 30, 2026 Director, issuer-wide	3,264	0.16%	+1,114	Sep 30, 2026	Director, issuer-wide
23	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	1,978	0.10%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
24	Dimensional U.S. Core Equity 2 ETF Fund S000070903 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	1,243	0.06%	—	Jul 31, 2026	Dimensional ETF Trust, not summed
25	Fidelity Nasdaq Composite Index Fund Fund S000055366 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	1,228	0.06%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
26	JONES FINANCIAL COMPANIES LLLP 13F CIK 815917 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	886	0.04%	+886	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Tower Research Capital LLC (TRC) 13F CIK 1533421 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	667	0.03%	-1,593	Jun 30, 2026	carried, not yet filed for the newest quarter
28	Skylark Partners I, LP 13G CIK 2100534 · Unknown · Jun 30, 2026 Rule 13d-1(c), passive investor	100	0.01%	-94,270	Jun 30, 2026	Rule 13d-1(c), passive investor
29	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	77	0.00%	+77	Jun 30, 2026	carried, not yet filed for the newest quarter
30	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	64	0.00%	-136	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Federation des caisses Desjardins du Quebec 13F CIK 2022297 · 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
32	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	20	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	HARBOUR INVESTMENTS, INC. 13F CIK 810121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	11	0.00%	+3	Jun 30, 2026	carried, not yet filed for the newest quarter
34	SBI Securities Co., Ltd. 13F CIK 1851815 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	10	0.00%	-3	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Caitong International Asset Management Co., Ltd 13F CIK 1963355 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	6	0.00%	-4,031	Jun 30, 2026	carried, not yet filed for the newest quarter
36	HUNTINGTON NATIONAL BANK 13F CIK 49205 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1	0.00%	0	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.

Key facts CIK 1001907 CUSIP 046484309 13F (30d) 2 filings 2 filers Visit website Investor relations