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
3/50
Latest evidence
30 Sep 2026
- Public ticker
- APT on NYSE
- Parsed ownership sources
-
3/4/5, 13D/G, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Donna Millar
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
3 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Donna Millar
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000884269
- Issuer location
- Aurora
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 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
3/50
Latest evidence
30 Sep 2026
3/4/5
13D/G
13F
Lead comparable stake: 12%
47 rows are not safely comparable across share classes.
13D/G row: Donna Millar
Showing 1-8 of 50 holder rows.
Quick read
Donna Millar leads the comparable SEC ownership view at 12%.
3 of 50 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 3
Donna Millar
12%
NEEDHAM INVESTMENT MANAGEMENT LLC
6.2%
VANGUARD CAPITAL MANAGEMENT LLC
6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Donna Millar |
3/4/5
13D/G
Director, 10%+ Owner · Millar Donna
|
12%
Reported 13D/G
· 13 Dec 2018
|
$7,303,768
1,299,603 shares
|
-$35,134 | 28 Sep 2026 |
| NEEDHAM INVESTMENT MANAGEMENT LLC |
13F
13D/G
Company · NEEDHAM INVESTMENT MANAGEMENT L.L.C.
|
6.2%
Reported 13D/G
· 31 Dec 2025
|
$3,610,850
642,500 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Capital Management
|
6%
Reported 13D/G
· 31 Mar 2026
|
$2,880,115
512,476 shares
|
— | 30 Jun 2026 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
denominator unverified
|
$3,156,035
561,572 shares
|
— | 30 Jun 2026 |
| BlackRock, Inc. |
13F
Company
|
—
denominator unverified
|
$1,566,221
278,687 shares
|
— | 30 Jun 2026 |
| Lloyd Hoffman |
3/4/5
CEO AND PRESIDENT, Director
|
—
denominator unverified
|
$1,538,475
273,750 shares
|
— | 28 Sep 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
Company
|
—
denominator unverified
|
$1,363,968
242,699 shares
|
— | 30 Jun 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
—
denominator unverified
|
$770,519
137,103 shares
|
— | 30 Jun 2026 |
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: -$417,214.
Buys
$0
Insiders: 0
Sells
$417,214
Insiders: 5
Net
-$417,214
Shares: -75,626
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 75,626
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 28,914 | $0 | $145,727 | -$145,727 |
| 3-6 | 0 | 34,972 | $0 | $215,527 | -$215,527 |
| 6-9 | 0 | 7,000 | $0 | $34,109 | -$34,109 |
| 9-12 | 0 | 4,740 | $0 | $21,851 | -$21,851 |
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
-$417,213
Latest report
30 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Donna Millar | Director, 10%+ Owner | $7,303,768 | -$35,134 | -0.48% | Mixed | 28 Sep 2026 |
| Lloyd Hoffman | CEO AND PRESIDENT, Director | $1,538,475 | Mixed | 28 Sep 2026 | ||
| Colleen J. Mcdonald | Cfo | $375,269 | Mixed | 28 Sep 2026 | ||
| Dr. John Ritota | Director | $332,788 | -$34,109 | -9.3% | Mixed | 30 Sep 2026 |
| Charles D. Montgomery | Director | $327,539 | -$262,911 | -45% | Mixed | 28 Sep 2026 |
| Russell Manock | Director | $191,909 | Mixed | 23 Sep 2022 | ||
| David R. Garcia | Director | $144,029 | -$63,208 | -31% | Mixed | 30 Sep 2026 |
| Benjamin A. Shaw | Director | $91,128 | Mixed | 30 Sep 2026 | ||
| James Buchan | Director | $64,489 | -$21,851 | -25% | Mixed | 30 Sep 2026 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Dr. John Ritota | APT | Common Stock | Award | 14.2% | 5,860 | 47,215 | 30 Sep 2026 | Direct | ||
| Benjamin A. Shaw | APT | common stock | Award | 56.6% | 5,860 | 16,215 | 30 Sep 2026 | Direct | ||
| James Buchan | APT | Common Stock | Award | 104.4% | 5,860 | 11,475 | 30 Sep 2026 | Direct | ||
| David R. Garcia | APT | common stock | Award | 29.6% | 5,860 | 25,628 | 30 Sep 2026 | Direct | ||
| Charles D. Montgomery | APT | common stock | Award | 130.5% | 33,000 | 58,281 | 28 Sep 2026 | Direct | ||
| Charles D. Montgomery | APT | common stock | Sale | -46.5% | $110,593 | $5.04 | -21,943 | 25,281 | 28 Sep 2026 | Direct |
| Charles D. Montgomery | APT | common stock | Tax liability | -21.7% | -13,057 | 47,224 | 28 Sep 2026 | Direct | ||
| Lloyd Hoffman | APT | Common stock | Award | 19.7% | 45,000 | 273,750 | 28 Sep 2026 | Direct | ||
| Lloyd Hoffman | APT | Common stock | Tax liability | -10.5% | -26,765 | 228,750 | 28 Sep 2026 | Direct | ||
| Donna Millar | APT | common stock | Award | 1.17% | 15,000 | 1,299,603 | 28 Sep 2026 | Direct | ||
| Donna Millar | APT | common stock | Sale | -0.54% | $35,134 | $5.04 | -6,971 | 1,284,603 | 28 Sep 2026 | Direct |
| Donna Millar | APT | common stock | Tax liability | -0.62% | -8,029 | 1,291,574 | 28 Sep 2026 | Direct | ||
| Colleen J. Mcdonald | APT | common stock | Award | 67.9% | 27,000 | 66,774 | 28 Sep 2026 | Direct | ||
| Colleen J. Mcdonald | APT | common stock | Tax liability | -28.8% | -16,059 | 39,774 | 28 Sep 2026 | Direct | ||
| 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 | -24.9% | $125,000 | $6.25 | -20,000 | 60,281 | 12 May 2026 | Direct |
| Charles D. Montgomery | APT | common stock | Sale | -4.62% | $27,319 | $7.03 | -3,886 | 80,281 | 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 |
* marks a reported price that did not pass the local price check.