| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Millar Donna | 12% | $5,356,795 | 1,284,603 | Millar Donna | 13 Dec 2018 | |||
| NEEDHAM INVESTMENT MANAGEMENT LLC | 6.2% | $3,026,175 | 642,500 | NEEDHAM INVESTMENT MANAGEMENT L.L.C. | 31 Dec 2025 |
As of 31 Dec 2025, 34 institutional investors reported holding 2,882,475 shares of ALPHA PRO TECH LTD - Common Stock, par value $0.01 per share (APT). This represents 28% of the company’s total 10,362,903 outstanding shares.
The largest institutional shareholders of ALPHA PRO TECH LTD - Common Stock, par value $0.01 per share (APT) together control 28% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| NEEDHAM INVESTMENT MANAGEMENT LLC | 6.2% | 642,500 | +1.2% | 0.18% | $2,852,700 |
| VANGUARD GROUP INC | 5.9% | 609,067 | -2.6% | 0% | $2,704,258 |
| RENAISSANCE TECHNOLOGIES LLC | 5% | 522,972 | -2.4% | 0% | $2,321,996 |
| BlackRock, Inc. | 2.6% | 270,409 | -0.52% | 0% | $1,200,615 |
| DIMENSIONAL FUND ADVISORS LP | 1.3% | 137,335 | -7.1% | 0% | $609,767 |
| ACADIAN ASSET MANAGEMENT LLC | 1.3% | 133,352 | -7.5% | 0% | $591,000 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.9% | 92,872 | -6.5% | 0% | $412,478 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.76% | 78,525 | 0% | 0.01% | $348,651 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.66% | 68,311 | +6.4% | 0% | $303,301 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.56% | 58,309 | 0% | 0% | $258,892 |
| STATE STREET CORP | 0.45% | 46,957 | 0% | 0% | $208,489 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 0.33% | 34,375 | 0% | 0.02% | $152,625 |
| NewEdge Advisors, LLC | 0.32% | 32,814 | +95% | 0% | $145,694 |
| Pinnacle Financial Partners, Inc. | 0.24% | 25,000 | 0% | 0% | $111,000 |
| OSAIC HOLDINGS, INC. | 0.23% | 23,480 | -7.1% | 0% | $104,251 |
| CITADEL ADVISORS LLC | 0.21% | 21,351 | -42% | 0% | $94,798 |
| NORTHERN TRUST CORP | 0.17% | 18,074 | -1.8% | 0% | $80,249 |
| CALDWELL SUTTER CAPITAL, INC. | 0.16% | 16,236 | 0% | 0.03% | $72,088 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 0.15% | 16,000 | 0% | 0% | $72,000 |
| JAMES INVESTMENT RESEARCH, INC. | 0.11% | 11,050 | 0% | 0.01% | $49,062 |
| MORGAN STANLEY | 0.08% | 8,766 | -24% | 0% | $38,921 |
| BANK OF AMERICA CORP /DE/ | 0.06% | 6,612 | +19% | 0% | $29,357 |
| WELLS FARGO & COMPANY/MN | 0.03% | 3,000 | 0% | 0% | $13,320 |
| Federation des caisses Desjardins du Quebec | 0.01% | 1,500 | 0% | 0% | $6,660 |
| Tower Research Capital LLC (TRC) | 0.01% | 1,146 | +64% | 0% | $5,088 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 2,882,475 | $12,798,189 | -$566,690 | $4.44 | 34 |
| 2025 Q3 | 3,003,600 | $14,371,851 | +$63,607 | $4.78 | 38 |
| 2025 Q2 | 2,990,364 | $14,024,461 | -$760,637 | $4.69 | 34 |
| 2025 Q1 | 3,136,549 | $15,675,279 | +$180,483 | $5.00 | 35 |
| 2024 Q4 | 3,098,952 | $16,393,671 | -$773,927 | $5.29 | 29 |
| 2024 Q3 | 3,236,803 | $18,455,113 | -$257,371 | $5.70 | 34 |
| 2024 Q2 | 3,282,394 | $18,056,312 | +$238,110 | $5.50 | 37 |
| 2024 Q1 | 3,234,836 | $20,183,475 | +$4,116,301 | $6.24 | 39 |
| 2023 Q4 | 2,532,094 | $13,390,474 | +$599,690 | $5.29 | 33 |
| 2023 Q3 | 2,415,993 | $10,485,011 | +$24,866 | $4.34 | 27 |
| 2023 Q2 | 2,408,108 | $9,606,575 | +$154,163 | $3.98 | 29 |
| 2023 Q1 | 2,374,084 | $9,874,781 | -$295,844 | $4.16 | 28 |
| 2022 Q4 | 2,440,602 | $9,831,561 | -$48,752 | $4.02 | 31 |
| 2022 Q3 | 2,444,770 | $9,898,539 | -$889,720 | $4.05 | 33 |
| 2022 Q2 | 2,655,938 | $11,859,087 | +$632,219 | $4.46 | 36 |
| 2022 Q1 | 2,503,248 | $10,510,097 | -$1,961,992 | $4.20 | 32 |
| 2021 Q4 | 2,892,384 | $17,267,137 | +$1,164,921 | $5.97 | 41 |
| 2021 Q3 | 2,664,023 | $17,932,686 | -$9,193,473 | $6.73 | 44 |
| 2021 Q2 | 3,739,713 | $32,046,403 | -$12,850,711 | $8.57 | 53 |
| 2021 Q1 | 5,183,924 | $50,593,995 | -$914,481 | $9.76 | 61 |
| 2020 Q4 | 5,235,974 | $58,381,153 | -$583,861 | $11.15 | 57 |
| 2020 Q3 | 5,198,084 | $76,840,683 | +$5,502,660 | $14.78 | 67 |
| 2020 Q2 | 4,788,730 | $84,758,001 | +$35,985,044 | $17.70 | 71 |
| 2020 Q1 | 2,842,248 | $34,330,975 | +$3,512,299 | $12.08 | 39 |
| 2019 Q4 | 3,270,859 | $11,220,000 | +$252,727 | $3.43 | 20 |
| 2019 Q3 | 3,194,312 | $11,532,000 | +$1,116,689 | $3.61 | 24 |
| 2019 Q2 | 2,887,052 | $9,846,000 | -$1,457,939 | $3.41 | 23 |
| 2019 Q1 | 3,313,473 | $11,930,000 | -$201,573 | $3.60 | 25 |
| 2018 Q4 | 3,369,112 | $12,498,000 | -$335,408 | $3.71 | 25 |
| 2018 Q3 | 3,377,790 | $11,991,000 | +$333,383 | $3.55 | 26 |
| 2018 Q2 | 3,377,641 | $11,316,000 | +$370,807 | $3.35 | 28 |
| 2018 Q1 | 3,267,046 | $10,943,000 | +$405,681 | $3.35 | 23 |
| 2017 Q4 | 3,145,337 | $12,583,000 | -$754,543 | $4.00 | 21 |
| 2017 Q3 | 3,341,938 | $12,868,000 | +$333,704 | $3.85 | 26 |
| 2017 Q2 | 3,289,615 | $9,702,000 | -$477,376 | $2.95 | 29 |
| 2017 Q1 | 3,452,745 | $9,493,000 | -$436,266 | $2.75 | 31 |
| 2016 Q4 | 3,640,140 | $12,738,000 | -$353,667 | $3.50 | 31 |
| 2016 Q3 | 3,741,180 | $13,468,000 | +$2,128,003 | $3.60 | 31 |
| 2016 Q2 | 3,157,793 | $7,165,000 | +$498,791 | $2.27 | 26 |
| 2016 Q1 | 2,947,315 | $5,362,000 | -$121,138 | $1.82 | 22 |
| 2015 Q4 | 3,021,316 | $5,288,000 | +$146,571 | $1.75 | 20 |
| 2015 Q3 | 2,924,012 | $5,817,000 | +$137,226 | $1.99 | 25 |
| 2015 Q2 | 2,830,695 | $6,338,000 | +$739,057 | $2.24 | 28 |
| 2015 Q1 | 2,500,640 | $5,686,000 | -$93,318 | $2.27 | 27 |
| 2014 Q4 | 2,545,698 | $6,541,000 | +$1,282,362 | $2.57 | 28 |
| 2014 Q3 | 1,842,145 | $5,985,000 | +$352,172 | $3.25 | 22 |
| 2014 Q2 | 1,790,611 | $3,813,000 | -$19,892 | $2.13 | 24 |
| 2014 Q1 | 1,783,573 | $3,989,000 | -$152,704 | $2.24 | 18 |