Comparable stake leader
Donna Millar
SEC ownership of ALPHA PRO TECH LTD
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000884269.
Disclosed value leader
Donna Millar
Comparable rows
43/46
Latest evidence
15 May 2026
- Public ticker
- APT on NYSE
- Parsed ownership sources
- 13D/G, 3/4/5, and 13F
- Largest SEC-reported holder
- Donna Millar
- Latest 13D/G holder
- Donna Millar
- Latest parsed ownership date
- 15 May 2026
- Issuer CIK
- 0000884269
- Issuer location
- Aurora
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of ALPHA PRO TECH LTD (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
43/46
Latest evidence
15 May 2026
13D/G
3/4/5
13F
Lead comparable stake: 12%
3 rows are not safely comparable across share classes.
13D/G row: Donna Millar
Showing 1-8 of 46 holder rows.
Quick read
Donna Millar leads the comparable SEC ownership view at 12%.
43 of 46 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 1-8 of 46 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
13F
Vanguard Capital Management · Company
|
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 |
| Charles D. Montgomery |
3/4/5
Director
|
0.25%
|
$152,697
25,281 shares
|
-$152,319 | 11 May 2026 |
| 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 |
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.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$317,212.
Buys
$0
Insiders: 0
Sells
$317,212
Insiders: 4
Net
-$317,212
Shares: -56,125
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 56,125
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 41,972 | $0 | $249,636 | -$249,636 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 4,740 | $0 | $21,851 | -$21,851 |
| 9-12 | 0 | 9,413 | $0 | $45,725 | -$45,725 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-9 of 9 reporting-owner rows connected to ALPHA PRO TECH LTD. Open a relationship link for the CIK-to-CIK filing trail.
Rows
9
Largest Forms 3/4/5 holder
Donna Millar
Net 12M change
-$317,212
Latest report
15 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Donna Millar | Director, 10%+ Owner | $4,704,563 | Mixed | 18 Mar 2024 | ||
| Lloyd Hoffman | CEO AND PRESIDENT, Director | $1,188,144 | Mixed | 05 Jan 2026 | ||
| Colleen J. Mcdonald | Cfo | $346,165 | Filing P/S | 21 Mar 2024 | ||
| Dr. John Ritota | Director | $260,817 | -$34,109 | -12% | Mixed | 16 Mar 2026 |
| Russell Manock | Director | $191,909 | Mixed | 23 Sep 2022 | ||
| Charles D. Montgomery | Director | $152,697 | -$152,319 | -50% | Filing P/S | 11 May 2026 |
| David R. Garcia | Director | $109,995 | -$63,208 | -36% | Filing P/S | 15 May 2026 |
| Benjamin A. Shaw | Director | $50,118 | Mixed | 29 Sep 2025 | ||
| James Buchan | Director | $25,885 | -$67,576 | -72% | Filing P/S | 05 Dec 2025 |
Recent insider transactions for ALPHA PRO TECH LTD
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| David R. Garcia | APT | options | Options Exercise | -66.7% | -6,186 | 3,094 | 19 May 2026 | Direct | ||
| David R. Garcia | APT | common stock | Sale | -23.8% | $34,421 | $5.56 | -6,186 | 19,768 | 15 May 2026 | Direct |
| David R. Garcia | APT | options | Options Exercise | 23.3% | 4,900 | 25,964 | 15 May 2026 | Direct | ||
| David R. Garcia | APT | options | Options Exercise | 24.8% | 4,900 | 24,668 | 15 May 2026 | Direct | ||
| David R. Garcia | APT | options | Options Exercise | -34.6% | -4,900 | 9,280 | 15 May 2026 | Direct | ||
| David R. Garcia | APT | common stock | Sale | -19.9% | $28,788 | $5.88 | -4,900 | 19,768 | 14 May 2026 | Direct |
| Charles D. Montgomery | APT | common stock | Sale | -44.2% | $125,000 | $6.25 | -20,000 | 25,281 | 12 May 2026 | Direct |
| Charles D. Montgomery | APT | common stock | Sale | -7.9% | $27,319 | $7.03 | -3,886 | 45,281 | 11 May 2026 | Direct |
| Dr. John Ritota | APT | Common Stock | Sale | -5.18% | $11,165 | $4.94 | -2,260 | 41,355 | 17 Mar 2026 | Direct |
| Dr. John Ritota | APT | Common Stock | Sale | -9.8% | $22,944 | $4.84 | -4,740 | 43,615 | 16 Mar 2026 | Direct |
| Lloyd Hoffman | APT | Common stock | Award | 5.11% | 12,425 | 255,515 | 05 Jan 2026 | Direct | ||
| James Buchan | APT | Common Stock | Sale | -45.8% | $21,851 | $4.61 | -4,740 | 5,615 | 05 Dec 2025 | Direct |
| Dr. John Ritota | APT | Common Stock | Award | 13.1% | 5,615 | 48,355 | 29 Sep 2025 | Direct | ||
| James Buchan | APT | Common Stock | Award | 118.5% | 5,615 | 10,355 | 29 Sep 2025 | Direct | ||
| Benjamin A. Shaw | APT | common stock | Award | 118.5% | 5,615 | 10,355 | 29 Sep 2025 | Direct | ||
| David R. Garcia | APT | common stock | Award | 39.7% | 5,615 | 19,768 | 29 Sep 2025 | Direct | ||
| James Buchan | APT | Common Stock | Sale | -66.5% | $45,725 | $4.86 | -9,413 | 4,740 | 09 Sep 2025 | Direct |
* marks a reported price that did not pass the local price check.