APT · Alpha Pro Tech Ltd · Shareholders & Ownership

$5.51 +0.07 (+1.29%)

Market Cap

$56.85M

10.21M

Volume · Oct 22 23.42K Avg daily vol (3M) 46.81K

Every disclosed holder of APT 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 APT

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)	42	3,064,956	30.03%	Yes
Insiders (Forms 3, 4, 5)	8	1,805,941	17.69%	Yes
13D/G-only blocks	1	45,000	0.44%	Yes
Remaining	—	5,290,321	51.83%	Rest
Registered funds (N-PORT, not summed)	27	1,439,786	14.11%	No

Shares outstanding: 10,206,218, 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 APT

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	Millar Donna Insider CIK 1726903 · Sep 28, 2026 Director, 10% Owner, issuer-wide	1,299,603	12.73%	0	Sep 28, 2026	Director, 10% Owner, issuer-wide
2	NEEDHAM INVESTMENT MANAGEMENT LLC 13F CIK 1167212 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	642,500	6.30%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	Needham Aggressive Growth Fund Fund S000003815 · Registered fund · Jun 30, 2026 Needham Funds Inc, not summed	642,500	6.30%	0	Jun 30, 2026	Needham Funds Inc, not summed
3	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	561,572	5.50%	+17,500	Jun 30, 2026	carried, not yet filed for the newest quarter
4	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	512,476	5.02%	-41,198	Jun 30, 2026	carried, not yet filed for the newest quarter
5	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	405,443	3.97%	-45,615	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
6	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	278,687	2.73%	+6,887	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	29,567	0.29%	+7,036	Jun 30, 2026	iShares Trust, not summed
7	HOFFMAN LLOYD Insider CIK 1258134 · Sep 28, 2026 Director, CEO AND PRESIDENT, issuer-wide	273,750	2.68%	+18,235	Sep 28, 2026	Director, CEO AND PRESIDENT, issuer-wide
8	SUSQUEHANNA INTERNATIONAL GROUP, LLP 13F CIK 1446194 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	242,699	2.38%	+101,473	Jun 30, 2026	carried, not yet filed for the newest quarter
9	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	137,103	1.34%	-232	Jun 30, 2026	carried, not yet filed for the newest quarter
9.1	U.S. CORE EQUITY 2 PORTFOLIO Fund S000000980 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	28,782	0.28%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
9.2	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	22,068	0.22%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
9.3	U.S. Targeted Value Portfolio Fund S000000970 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	21,849	0.21%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
9.4	Dimensional U.S. Targeted Value ETF Fund S000070901 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	17,267	0.17%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
9.5	U.S. CORE EQUITY 1 PORTFOLIO Fund S000000979 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	8,900	0.09%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
10	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	126,866	1.24%	-6,486	Jun 30, 2026	carried, not yet filed for the newest quarter
11	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	102,260	1.00%	-356	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
12	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	96,853	0.95%	+28,467	Jun 30, 2026	carried, not yet filed for the newest quarter
13	MCDONALD COLLEEN J Insider CIK 1663450 · Sep 28, 2026 CFO, issuer-wide	66,774	0.65%	+10,941	Sep 28, 2026	CFO, issuer-wide
14	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	64,525	0.63%	-14,000	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	Omni Small-Cap Value Fund Fund S000033567 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	39,124	0.38%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
14.2	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	21,901	0.21%	-14,000	Jun 30, 2026	Bridgeway Funds, Inc., not summed
15	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 13F CIK 1164508 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	58,309	0.57%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
16	MONTGOMERY CHARLES D Insider CIK 1347444 · Sep 28, 2026 Director, issuer-wide	58,281	0.57%	-2,000	Sep 28, 2026	Director, issuer-wide
17	RITOTA JOHN Insider CIK 1258162 · Sep 30, 2026 Director, issuer-wide	54,215	0.53%	—	Sep 30, 2026	Director, issuer-wide
18	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	52,113	0.51%	+52,113	Jun 30, 2026	carried, not yet filed for the newest quarter
19	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	51,788	0.51%	+356	Jun 30, 2026	carried, not yet filed for the newest quarter
20	ESSEX INVESTMENT MANAGEMENT CO LLC 13F CIK 201772 · Registered investment adviser · Sep 30, 2026	47,283	0.46%	+13,019	Sep 30, 2026
21	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	46,957	0.46%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
22	Paul Saunders, Jr. 13G CIK 1676246 · Unknown · Feb 5, 2024 Rule 13d-1(c), passive investor	45,000	0.44%	—	Feb 5, 2024	Rule 13d-1(c), passive investor
23	Garcia David R Insider CIK 1503888 · Sep 30, 2026 Director, issuer-wide	25,628	0.25%	-20,104	Sep 30, 2026	Director, issuer-wide
24	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	20,697	0.20%	+2,623	Jun 30, 2026	carried, not yet filed for the newest quarter
25	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	17,217	0.17%	+2,500	Jun 30, 2026	carried, not yet filed for the newest quarter
26	SIMPLEX TRADING, LLC 13F CIK 1488542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	16,772	0.16%	+16,772	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Shaw Benjamin A Insider CIK 1973917 · Sep 30, 2026 Director, issuer-wide	16,215	0.16%	+5,860	Sep 30, 2026	Director, issuer-wide
28	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	16,000	0.16%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
28.1	T. Rowe Price Extended Equity Market Index Fund Fund S000002090 · Registered fund · Jun 30, 2026 T. ROWE PRICE INDEX TRUST, INC., not summed	16,000	0.16%	0	Jun 30, 2026	T. ROWE PRICE INDEX TRUST, INC., not summed
29	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	13,047	0.13%	-12,583	Jun 30, 2026	carried, not yet filed for the newest quarter
30	Pinnacle Financial Partners, Inc. 13F CIK 2082866 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	12,400	0.12%	-12,600	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Buchan James Insider CIK 1703326 · Sep 30, 2026 Director, issuer-wide	11,475	0.11%	+5,860	Sep 30, 2026	Director, issuer-wide
32	NewEdge Advisors, LLC 13F CIK 1633516 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	11,056	0.11%	-7,635	Jun 30, 2026	carried, not yet filed for the newest quarter
33	JAMES INVESTMENT RESEARCH, INC. 13F CIK 810384 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	11,050	0.11%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
34	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	8,066	0.08%	-700	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	5,970	0.06%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
36	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	5,761	0.06%	+5,761	Jun 30, 2026	carried, not yet filed for the newest quarter
37	VANGUARD BALANCED INDEX FUND Fund S000002560 · Registered fund · Jun 30, 2026 VANGUARD VALLEY FORGE FUNDS, not summed	4,773	0.05%	—	Jun 30, 2026	VANGUARD VALLEY FORGE FUNDS, not summed
38	Vanguard Global Advisers, LLC 13F CIK 1811242 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,961	0.04%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
39	OSAIC HOLDINGS, INC. 13F CIK 1677044 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,780	0.04%	-1,000	Jun 30, 2026	carried, not yet filed for the newest quarter
40	1290 VT Micro Cap Portfolio Fund S000044688 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	2,098	0.02%	+567	Jun 30, 2026	EQ Advisors Trust, not summed
41	GROUP ONE TRADING LLC 13F CIK 932540 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	2,079	0.02%	-110,992	Jun 30, 2026	carried, not yet filed for the newest quarter
42	LVIP Dimensional U.S. Core Equity 2 Fund Fund S000048564 · Registered fund · Jun 30, 2026 LINCOLN VARIABLE INSURANCE PRODUCTS TRUST, not summed	1,911	0.02%	—	Jun 30, 2026	LINCOLN VARIABLE INSURANCE PRODUCTS TRUST, not summed
43	Fortitude Family Office, LLC 13F CIK 1950506 · Registered investment adviser · Sep 30, 2026	905	0.01%	+905	Sep 30, 2026
44	Tower Research Capital LLC (TRC) 13F CIK 1533421 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	684	0.01%	+42	Jun 30, 2026	carried, not yet filed for the newest quarter
45	BARCLAYS PLC 13F CIK 312069 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	426	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
46	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	400	0.00%	+400	Jun 30, 2026	carried, not yet filed for the newest quarter
46.1	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	17,947	0.18%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
46.2	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	16,713	0.16%	-24,851	May 31, 2026	Fidelity Concord Street Trust, not summed
46.3	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	15,615	0.15%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
47	Farther Finance Advisors, LLC 13F CIK 1992825 · Registered investment adviser · Sep 30, 2026	363	0.00%	0	Sep 30, 2026
48	SBI Securities Co., Ltd. 13F CIK 1851815 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	252	0.00%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
49	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	131	0.00%	+91	Jun 30, 2026	carried, not yet filed for the newest quarter
50	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 13F CIK 1141802 · Unknown · 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

8 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 57 holders

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Key facts CIK 884269 CUSIP 020772109 13F (30d) 4 filings 4 filers Visit website Investor relations