Security key
020772109
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 2,882,475
- Total 13F value
- $12,798,189
- Share change
- -122,125
- Put/Call ratio
- 64%
- SEC-reported price per share
- $4.44
- Number of holders
- 34
- Value change
- -$566,690
- Number of buys
- 6
- Number of sells
- 18
- Shares outstanding
- 10,202,127
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
34
Top holders
10
APT full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
ALPHA PRO TECH LTD SEC filings
ALPHA PRO TECH LTD company facts
Broader feeds
Reporting periods
Holder history for CUSIP 020772109
Recent filing periods:
Ownership snapshot
Top reported holders of APT - ALPHA PRO TECH LTD - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Donna Millar
Disclosed value leader
Donna Millar
Comparable rows
15/15
Latest evidence
05 Dec 2025
13D/G
3/4/5
13F
Lead comparable stake: 12%
13D/G row: Donna Millar
Showing 1-6 of 15 holder rows.
Quick read
Donna Millar leads the comparable SEC ownership view at 12%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Donna Millar's linked filing trail.
Comparable ownership
Top 5
Donna Millar
12%
NEEDHAM INVESTMENT MANAGEMENT LLC
6.2%
Benjamin A. Shaw
0.1%
James Buchan
0.06%
VANGUARD GROUP INC
6.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Donna Millar |
13D/G
3/4/5
Millar Donna · Director, 10%+ Owner
|
12%
|
$5,356,795
1,284,603 shares
|
$0 | 13 Dec 2018 |
| NEEDHAM INVESTMENT MANAGEMENT LLC |
13F
13D/G
Company · NEEDHAM INVESTMENT MANAGEMENT L.L.C.
|
6.2%
from 13D/G
|
$3,038,475
635,000 shares
|
— | 30 Sep 2025 |
| Benjamin A. Shaw |
3/4/5
Director
|
0.1%
|
$50,118
10,355 shares
|
— | 29 Sep 2025 |
| James Buchan |
3/4/5
Director
|
0.06%
|
$25,885
5,615 shares
|
-$67,576 | 05 Dec 2025 |
| VANGUARD GROUP INC |
13F
Company
|
6.1%
|
$2,992,400
625,371 shares
|
— | 30 Sep 2025 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
5.3%
|
$2,563,685
535,775 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
34
Shares
2,882,475
Rows available
34
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
38
Q4 2025 holders
34
Holder diff
-4
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend