Security key
020772109
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 3,042,986
- Total 13F value
- $13,511,362
- Share change
- +160,511
- Put/Call ratio
- 136%
- SEC-reported price per share
- $4.44
- Number of holders
- 37
- Value change
- +$712,566
- Number of buys
- 11
- Number of sells
- 11
- 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
Q1 2026
Institutions
37
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
31 Mar 2026
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%
VANGUARD CAPITAL MANAGEMENT LLC
6%
Lloyd Hoffman
2.5%
Dr. John Ritota
0.52%
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 |
13D/G
13F
NEEDHAM INVESTMENT MANAGEMENT L.L.C. · Company
|
6.2%
|
$3,026,175
642,500 shares
|
$0 | 31 Dec 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
Vanguard Capital Management
|
6%
|
$2,801,830
609,067 shares
|
$0 | 31 Mar 2026 |
| Lloyd Hoffman |
3/4/5
CEO AND PRESIDENT, Director
|
2.5%
|
$1,188,144
255,515 shares
|
— | 05 Jan 2026 |
| Dr. John Ritota |
3/4/5
Director
|
0.52%
|
$260,817
53,355 shares
|
-$34,109 | 16 Mar 2026 |
| Benjamin A. Shaw |
3/4/5
Director
|
0.1%
|
$50,118
10,355 shares
|
— | 29 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 Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
37
Shares
3,042,986
Rows available
37
| 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 Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
37
Q1 2026 holders
37
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend