APT: Alpha Pro Tech Ltd insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 7 sales totaling $298K in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-09-28 | Millar Donna | Director | $35K | |
| 2026-09-28 | Montgomery Charles D | Director | $111K | |
| 2026-05-12 | Montgomery Charles D | Director | $31K | |
| 2026-05-12 | Montgomery Charles D | Director | $32K | |
| 2026-05-12 | Montgomery Charles D | Director | $32K | |
| 2026-05-12 | Montgomery Charles D | Director | $30K | |
| 2026-05-11 | Montgomery Charles D | Director | $27K |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-10-30 | Fell below 5% | Vanguard Capital Management | 4.29% | SEC |
Institutional ownership (Q2 2026)
41 institutions reported holding $16.35M of Alpha Pro Tech Ltd on Form 13F (37 the quarter before). 8 opened a new position and 3 sold out. Shares held by institutions: +1%.
| Largest holders | Shares | Value |
|---|---|---|
| NEEDHAM INVESTMENT MANAGEMENT LLC | 642,500 | $3.61M |
| RENAISSANCE TECHNOLOGIES LLC | 561,572 | $3.16M |
| VANGUARD CAPITAL MANAGEMENT LLC | 512,476 | $2.88M |
| BlackRock, Inc. | 278,687 | $1.57M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 242,699 | $1.36M |
| DIMENSIONAL FUND ADVISORS LP | 137,103 | $771K |
| GEODE CAPITAL MANAGEMENT, LLC | 96,853 | $545K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 64,525 | $363K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 58,309 | $328K |
| MARSHALL WACE, LLP | 52,113 | $293K |
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