Alpha Pro Tech (APT)
Alpha Pro Tech on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE, classified by the SEC as orthopedic, prosthetic & surgical appliances & supplies.
83K
Short interest
settlement 2026-10-15
1.0
Days to cover
-0.9 days vs prior
67.8%
Short share of volume
2026-11-02
384
Fails to deliver
settlement 2026-10-13
Wed 4 Nov
Next earnings
estimated date
-$146K
Insider flow, 90 days
0 buys, 2 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in APT is 82,886 shares, down 22,157 shares over the last month. Over the last 48 readings it ranged from 18,265 shares (13 February 2026) to 206,846 shares (15 May 2026). At the reported average volume of 119K shares a day that is 1.0 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/apt" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 82,886 | +85.8% | 119,369 | 1.00 |
| 2026-09-30 | 44,618 | -57.5% | 22,900 | 1.95 |
| 2026-09-15 | 105,043 | +3.7% | 24,235 | 4.33 |
| 2026-08-31 | 101,337 | +10.7% | 32,969 | 3.07 |
| 2026-08-14 | 91,543 | +40.9% | 47,992 | 1.91 |
| 2026-07-31 | 64,984 | +32.8% | 39,562 | 1.64 |
| 2026-07-15 | 48,942 | -34.8% | 58,693 | 1.00 |
| 2026-06-30 | 75,024 | -18.6% | 58,210 | 1.29 |
| 2026-06-15 | 92,181 | -41.8% | 68,017 | 1.36 |
| 2026-05-29 | 158,353 | -23.4% | 97,937 | 1.62 |
| 2026-05-15 | 206,846 | +121.8% | 276,427 | 1.00 |
| 2026-04-30 | 93,276 | -4.0% | 21,026 | 4.44 |
| 2026-04-15 | 97,113 | +83.5% | 29,779 | 3.26 |
| 2026-03-31 | 52,930 | +113.6% | 51,019 | 1.04 |
| 2026-03-13 | 24,776 | -36.2% | 34,775 | 1.00 |
| 2026-02-27 | 38,836 | +112.6% | 31,188 | 1.25 |
| 2026-02-13 | 18,265 | -57.0% | 45,010 | 1.00 |
| 2026-01-30 | 42,430 | +48.9% | 52,143 | 1.00 |
| 2026-01-15 | 28,488 | +8.0% | 22,198 | 1.28 |
| 2025-12-31 | 26,391 | -19.7% | 26,901 | 1.00 |
| 2025-12-15 | 32,866 | -14.6% | 24,472 | 1.34 |
| 2025-11-28 | 38,461 | +99.2% | 28,805 | 1.34 |
| 2025-11-14 | 19,313 | -20.3% | 23,715 | 1.00 |
| 2025-10-31 | 24,230 | +8.7% | 17,068 | 1.42 |
| 2025-10-15 | 22,297 | -12.6% | 14,919 | 1.49 |
| 2025-09-30 | 25,511 | +2.0% | 25,161 | 1.01 |
| 2025-09-15 | 24,999 | -29.2% | 33,437 | 1.00 |
| 2025-08-29 | 35,288 | -12.7% | 23,178 | 1.52 |
| 2025-08-15 | 40,425 | -19.1% | 26,347 | 1.53 |
| 2025-07-31 | 49,959 | +33.0% | 17,871 | 2.80 |
| 2025-07-15 | 37,548 | -7.1% | 11,999 | 3.13 |
| 2025-06-30 | 40,404 | -1.7% | 14,782 | 2.73 |
| 2025-06-13 | 41,115 | +2.2% | 53,569 | 1.00 |
| 2025-05-30 | 40,233 | -0.5% | 46,319 | 1.00 |
| 2025-05-15 | 40,421 | -24.3% | 10,392 | 3.89 |
| 2025-04-30 | 53,421 | +39.3% | 12,399 | 4.31 |
| 2025-04-15 | 38,361 | +42.0% | 37,201 | 1.03 |
| 2025-03-31 | 27,024 | +2.9% | 23,113 | 1.17 |
| 2025-03-14 | 26,261 | -25.5% | 22,193 | 1.18 |
| 2025-02-28 | 35,263 | -33.3% | 51,465 | 1.00 |
| 2025-02-14 | 52,858 | +14.4% | 15,813 | 3.34 |
| 2025-01-31 | 46,221 | -11.9% | 23,590 | 1.96 |
| 2025-01-15 | 52,460 | +37.8% | 48,044 | 1.09 |
| 2024-12-31 | 38,071 | -7.0% | 36,382 | 1.05 |
| 2024-12-13 | 40,945 | -60.5% | 45,443 | 1.00 |
| 2024-11-29 | 103,765 | -21.0% | 21,487 | 4.83 |
| 2024-11-15 | 131,342 | +0.9% | 25,070 | 5.24 |
| 2024-10-31 | 130,223 | +3.7% | 19,129 | 6.81 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of APT volume is 67.8%, up 48.5 points over the last five sessions. Over the last 30 readings it ranged from 16.9% (21 October 2026) to 85.9% (23 October 2026). The latest reading is 17.8 points above the 30-session average of 50.0%, on 26K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 18K | 26K | 67.8% | 0 |
| 2026-10-30 | 10K | 14K | 72.9% | 0 |
| 2026-10-29 | 3K | 4K | 64.8% | 0 |
| 2026-10-28 | 5K | 13K | 35.8% | 0 |
| 2026-10-27 | 7K | 21K | 30.5% | 0 |
| 2026-10-26 | 3K | 13K | 19.3% | 0 |
| 2026-10-23 | 9K | 11K | 85.9% | 0 |
| 2026-10-22 | 7K | 13K | 54.3% | 534 |
| 2026-10-21 | 9K | 53K | 16.9% | 0 |
| 2026-10-20 | 5K | 13K | 40.7% | 0 |
| 2026-10-19 | 6K | 16K | 38.8% | 0 |
| 2026-10-16 | 3K | 7K | 40.6% | 0 |
| 2026-10-15 | 16K | 40K | 40.1% | 1,626 |
| 2026-10-14 | 17K | 33K | 52.0% | 100 |
| 2026-10-13 | 13K | 27K | 49.0% | 0 |
| 2026-10-12 | 22K | 50K | 45.0% | 0 |
| 2026-10-09 | 14K | 24K | 56.9% | 0 |
| 2026-10-08 | 47K | 96K | 49.1% | 0 |
| 2026-10-07 | 42K | 71K | 59.1% | 1,500 |
| 2026-10-06 | 50K | 82K | 60.7% | 50 |
| 2026-10-05 | 148K | 237K | 62.3% | 100 |
| 2026-10-02 | 2K | 5K | 31.8% | 0 |
| 2026-10-01 | 5K | 9K | 50.6% | 0 |
| 2026-09-30 | 4K | 6K | 64.2% | 0 |
| 2026-09-29 | 2K | 3K | 61.2% | 0 |
| 2026-09-28 | 7K | 15K | 46.7% | 0 |
| 2026-09-25 | 13K | 21K | 62.6% | 0 |
| 2026-09-24 | 822 | 4K | 21.6% | 0 |
| 2026-09-23 | 2K | 3K | 53.8% | 0 |
| 2026-09-22 | 7K | 11K | 64.8% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 13 October 2026, the fails-to-deliver balance in APT is 384 shares, down 4,120 shares over the last settlement date. Over the last 30 readings it ranged from 4 shares (15 April 2026) to 5,978 shares (12 March 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-13 | 384 | $5.74 | $2K |
| 2026-10-09 | 4,504 | $6.00 | $27K |
| 2026-09-22 | 1,736 | $5.13 | $9K |
| 2026-09-02 | 164 | $5.26 | $863 |
| 2026-08-12 | 655 | $5.38 | $4K |
| 2026-08-11 | 698 | $5.37 | $4K |
| 2026-08-07 | 12 | $5.22 | $63 |
| 2026-08-05 | 570 | $4.95 | $3K |
| 2026-07-29 | 1,486 | $5.00 | $7K |
| 2026-07-17 | 213 | $5.30 | $1K |
| 2026-06-23 | 2,576 | $5.31 | $14K |
| 2026-06-03 | 4 | $5.46 | $22 |
| 2026-05-29 | 68 | $5.73 | $390 |
| 2026-05-27 | 1,407 | $6.05 | $9K |
| 2026-05-22 | 500 | $6.18 | $3K |
| 2026-05-21 | 600 | $6.11 | $4K |
| 2026-05-20 | 300 | $6.02 | $2K |
| 2026-05-18 | 1,647 | $5.49 | $9K |
| 2026-04-20 | 99 | $4.62 | $457 |
| 2026-04-15 | 4 | $4.70 | $19 |
| 2026-03-17 | 207 | $4.94 | $1K |
| 2026-03-12 | 5,978 | $5.33 | $32K |
| 2026-03-02 | 231 | $5.21 | $1K |
| 2026-01-13 | 128 | $4.71 | $603 |
| 2025-12-31 | 1,111 | $4.35 | $5K |
| 2025-12-30 | 1,201 | $4.38 | $5K |
| 2025-12-17 | 5,692 | $4.52 | $26K |
| 2025-12-12 | 560 | $4.65 | $3K |
| 2025-12-08 | 1,600 | $4.60 | $7K |
| 2025-12-01 | 2,800 | $4.60 | $13K |
Insider trades
SEC Form 4, newest first. JSONInsiders at APT reported 2 open-market sells worth $146K in the last 90 days and no open-market buys. Latest filing: Shaw Benjamin A (Director) on 2026-09-30.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | Shaw Benjamin A | Director | Grant | 6K | $0.00 | $0 | 16K |
| 2026-09-30 | RITOTA JOHN | Director | Grant | 6K | $0.00 | $0 | 47K |
| 2026-09-30 | Garcia David R | Director | Grant | 6K | $0.00 | $0 | 26K |
| 2026-09-30 | Buchan James | Director | Grant | 6K | $0.00 | $0 | 11K |
| 2026-09-28 | Millar Donna | Director, 10% owner | Grant | 15K | $5.04 | $76K | 1.3M |
| 2026-09-28 | Millar Donna | Director, 10% owner | Sell | 7K | $5.04 | $35K | 1.3M |
| 2026-09-28 | Millar Donna | Director, 10% owner | Tax withholding | 8K | $5.04 | $40K | 1.3M |
| 2026-09-28 | MCDONALD COLLEEN J | CFO | Grant | 27K | $5.04 | $136K | 67K |
| 2026-09-28 | MCDONALD COLLEEN J | CFO | Tax withholding | 16K | $5.04 | $81K | 40K |
| 2026-09-28 | HOFFMAN LLOYD | CEO AND PRESIDENT | Grant | 45K | $5.04 | $227K | 274K |
| 2026-09-28 | HOFFMAN LLOYD | CEO AND PRESIDENT | Tax withholding | 27K | $5.04 | $135K | 229K |
| 2026-09-28 | MONTGOMERY CHARLES D | Director | Grant | 33K | $5.04 | $166K | 58K |
| 2026-09-28 | MONTGOMERY CHARLES D | Director | Sell | 22K | $5.04 | $111K | 25K |
| 2026-09-28 | MONTGOMERY CHARLES D | Director | Tax withholding | 13K | $5.04 | $66K | 47K |
| 2026-05-15 | Garcia David R | Director | Exercise or conversion | 5K | $3.99 | $20K | 25K |
| 2026-05-15 | Garcia David R | Director | Sell | 6K | $5.56 | $34K | 20K |
| 2026-05-15 | Garcia David R | Director | Exercise or conversion | 5K | $4.23 | $21K | 26K |
| 2026-05-14 | Garcia David R | Director | Sell | 5K | $5.88 | $29K | 20K |
| 2026-05-12 | MONTGOMERY CHARLES D | Director | Sell | 5K | $6.04 | $30K | 25K |
| 2026-05-12 | MONTGOMERY CHARLES D | Director | Sell | 5K | $6.33 | $32K | 30K |
| 2026-05-12 | MONTGOMERY CHARLES D | Director | Sell | 5K | $6.35 | $32K | 35K |
| 2026-05-12 | MONTGOMERY CHARLES D | Director | Sell | 5K | $6.28 | $31K | 40K |
| 2026-05-11 | MONTGOMERY CHARLES D | Director | Sell | 4K | $7.03 | $27K | 45K |
| 2026-03-17 | RITOTA JOHN | Director | Sell | 2K | $4.94 | $11K | 41K |
| 2026-03-16 | RITOTA JOHN | Director | Sell | 5K | $4.84 | $23K | 44K |
| 2026-01-05 | HOFFMAN LLOYD | CEO AND PRESIDENT | Grant | 12K | $0.00 | $0 | 256K |
| 2025-12-05 | Buchan James | Director | Sell | 5K | $4.61 | $22K | 6K |
| 2025-09-29 | Shaw Benjamin A | Director | Grant | 6K | $0.00 | $0 | 10K |
| 2025-09-29 | Shaw Benjamin A | Director | Grant | 5K | $0.00 | $0 | 10K |
| 2025-09-29 | Buchan James | Director | Grant | 6K | $0.00 | $0 | 10K |
| 2025-09-29 | Garcia David R | Director | Grant | 6K | $0.00 | $0 | 20K |
| 2025-09-29 | RITOTA JOHN | Director | Grant | 6K | $0.00 | $0 | 48K |
| 2025-09-09 | Buchan James | Director | Sell | 6K | $4.88 | $31K | 5K |
| 2025-09-09 | Buchan James | Director | Sell | 3K | $4.81 | $14K | 11K |
| 2025-03-18 | RITOTA JOHN | Director | Sell | 9K | $5.15 | $48K | 50K |
| 2025-01-07 | HOFFMAN LLOYD | CEO AND PRESIDENT | Grant | 10K | $0.00 | $0 | 243K |
| 2024-09-30 | Buchan James | Director | Grant | 5K | $0.00 | $0 | 14K |
| 2024-09-30 | Garcia David R | Director | Grant | 5K | $0.00 | $0 | 14K |
| 2024-09-30 | Shaw Benjamin A | Director | Grant | 5K | $0.00 | $0 | 14K |
| 2024-09-30 | RITOTA JOHN | Director | Grant | 5K | $0.00 | $0 | 59K |
| 2024-09-30 | Shaw Benjamin A | Director | Grant | 5K | $0.00 | $0 | 5K |
| 2024-09-16 | Garcia David R | Director | Sell | 5K | $5.48 | $27K | 9K |
| 2024-09-16 | Garcia David R | Director | Exercise or conversion | 5K | $3.42 | $17K | 14K |
| 2024-03-21 | MCDONALD COLLEEN J | CFO | Sell | 10K | $6.11 | $61K | 66K |
| 2024-03-21 | RITOTA JOHN | Director | Sell | 819 | $5.94 | $5K | 54K |
| 2024-03-21 | RITOTA JOHN | Director | Exercise or conversion | 15K | $3.42 | $51K | 61K |
| 2024-03-21 | MCDONALD COLLEEN J | CFO | Sell | 10K | $6.20 | $62K | 56K |
| 2024-03-20 | RITOTA JOHN | Director | Sell | 6K | $5.97 | $37K | 55K |
| 2024-03-18 | MCDONALD COLLEEN J | CFO | Exercise or conversion | 30K | $3.62 | $109K | 76K |
| 2024-03-18 | HOFFMAN LLOYD | CEO AND PRESIDENT | Exercise or conversion | 100K | $3.62 | $362K | 223K |
| 2024-03-18 | Millar Donna | Director,TenPercentOwner | Exercise or conversion | 15K | $3.62 | $54K | 1.3M |
| 2024-03-18 | HOFFMAN LLOYD | CEO AND PRESIDENT | Exercise or conversion | 100K | $3.62 | $362K | 233K |
| 2024-03-15 | Buchan James | Director | Exercise or conversion | 15K | $3.42 | $51K | 21K |
| 2024-03-15 | Buchan James | Director | Sell | 14K | $5.82 | $81K | 7K |
| 2024-03-15 | Buchan James | Director | Sell | 1K | $5.78 | $6K | 6K |
| 2024-03-15 | Buchan James | Director | Sell | 1K | $5.78 | $6K | 9K |
| 2024-03-15 | Buchan James | Director | Sell | 14K | $5.82 | $81K | 10K |
| 2024-03-15 | Buchan James | Director | Exercise or conversion | 15K | $3.42 | $51K | 24K |
| 2024-03-14 | MONTGOMERY CHARLES D | Director | Exercise or conversion | 33K | $3.62 | $121K | 84K |
| 2024-01-08 | HOFFMAN LLOYD | CEO AND PRESIDENT | Grant | 11K | $0.00 | $0 | 133K |
| 2023-09-28 | MCDONALD COLLEEN J | CFO | Grant | 30K | $0.00 | $0 | 46K |
| 2023-09-28 | MONTGOMERY CHARLES D | Director | Grant | 35K | $0.00 | $0 | 51K |
| 2023-09-28 | Millar Donna | Director,TenPercentOwner | Grant | 15K | $0.00 | $0 | 1.3M |
| 2023-09-28 | HOFFMAN LLOYD | CEO AND PRESIDENT | Grant | 50K | $0.00 | $0 | 123K |
| 2023-09-08 | Buchan James | Director | Sell | 10K | $4.46 | $45K | 6K |
| 2023-09-08 | Buchan James | Director | Exercise or conversion | 10K | $3.60 | $36K | 16K |
| 2023-05-01 | RITOTA JOHN | Director | Exercise or conversion | 15K | $3.60 | $54K | 46K |
| 2023-03-14 | HOFFMAN LLOYD | CEO AND PRESIDENT | Grant | 63K | $3.20 | $203K | 73K |
| 2023-03-14 | Millar Donna | Director,TenPercentOwner | Exercise or conversion | 14K | $3.20 | $46K | 1.3M |
| 2023-03-14 | MONTGOMERY CHARLES D | Director | Exercise or conversion | 16K | $3.20 | $51K | 16K |
| 2023-03-14 | MCDONALD COLLEEN J | CFO | Exercise or conversion | 16K | $3.20 | $51K | 16K |
| 2022-12-30 | HOFFMAN LLOYD | CEO AND PRESIDENT | Grant | 8K | $0.00 | $0 | 9K |
| 2022-11-14 | RITOTA JOHN | Director | Sell | 5K | $4.15 | $21K | 31K |
| 2022-11-14 | RITOTA JOHN | Director | Exercise or conversion | 5K | $3.90 | $20K | 36K |
| 2022-09-23 | Garcia David R | Director | Grant | 3K | $0.00 | $0 | 9K |
| 2022-09-23 | MANOCK RUSSELL | Director | Grant | 3K | $0.00 | $0 | 19K |
| 2022-09-23 | Buchan James | Director | Grant | 3K | $0.00 | $0 | 9K |
| 2022-09-23 | RITOTA JOHN | Director | Grant | 3K | $0.00 | $0 | 31K |
| 2022-09-20 | Buchan James | Director | Sell | 8K | $3.92 | $33K | 6K |
| 2022-09-20 | Buchan James | Director | Exercise or conversion | 8K | $3.66 | $30K | 14K |
| 2022-05-23 | RITOTA JOHN | Director | Sell | 9K | $4.50 | $40K | 28K |
| 2021-11-17 | Garcia David R | Director | Exercise or conversion | 5K | $3.42 | $17K | 16K |
| 2021-11-17 | Garcia David R | Director | Exercise or conversion | 5K | $3.60 | $18K | 11K |
| 2021-11-15 | Garcia David R | Director | Sell | 10K | $5.24 | $52K | 6K |
| 2021-09-24 | Garcia David R | Director | Grant | 4K | $0.00 | $0 | 6K |
| 2021-09-24 | Buchan James | Director | Grant | 4K | $0.00 | $0 | 6K |
| 2021-09-24 | RITOTA JOHN | Director | Grant | 4K | $0.00 | $0 | 37K |
| 2021-09-24 | MANOCK RUSSELL | Director | Grant | 4K | $0.00 | $0 | 16K |
| 2021-06-16 | Millar Donna | Director | Exercise or conversion | 30K | $2.12 | $64K | 1.3M |
| 2021-06-16 | Millar Donna | Director | Exercise or conversion | 13K | $8.04 | $106K | 1.3M |
| 2021-06-15 | Millar Donna | Director | Sell | 17K | $8.02 | $135K | 1.3M |
| 2021-05-26 | Garcia David R | Director | Sell | 2K | $8.23 | $13K | 0 |
| 2021-05-26 | Garcia David R | Director | Sell | 3K | $8.21 | $28K | 2K |
| 2021-05-26 | Garcia David R | Director | Exercise or conversion | 5K | $3.90 | $20K | 5K |
| 2021-03-19 | RITOTA JOHN | Director | Sell | 15K | $11.25 | $169K | 31K |
| 2021-03-19 | RITOTA JOHN | Director | Exercise or conversion | 10K | $3.90 | $39K | 46K |
| 2021-03-19 | RITOTA JOHN | Director | Exercise or conversion | 5K | $3.45 | $17K | 31K |
| 2020-12-14 | RITOTA JOHN | Director | Grant | 2K | $0.00 | $0 | 33K |
| 2020-12-14 | MANOCK RUSSELL | Director | Grant | 2K | $0.00 | $0 | 12K |
| 2020-12-14 | Buchan James | Director | Grant | 2K | $0.00 | $0 | 2K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON5 Form 144 notices on file for APT worth $143K at the prices reported; 0 in the last 90 days worth $0. Latest: Garcia David R filed on 2026-05-14 to sell 11,086 shares ($65K) from 2026-05-14.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-05-14 | Garcia David RDirector | 11K | $65K | 0.109% | 2026-05-14 | Charles Schwab Corp |
| 2026-03-17 | JOHN P. RITOTA DDSDirector | 5K | $23K | 0.047% | 2026-03-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-16 | JOHN P. RITOTA DDSDirector | 2K | $11K | 0.022% | 2026-03-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-08 | James W BuchanDirector | 5K | $22K | 0.046% | 2025-12-12 | Virtu Financial (NITE) |
| 2025-12-08 | James W BuchanDirector | 5K | $22K | 0.046% | 2025-12-12 | Virtu Financial (NITE) |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON4 holders report 5% or more of APT in their latest filing, all on Schedule 13G (passive). The largest reported stake is NEEDHAM INVESTMENT MANAGEMENT L.L.C. at 6.2% of the class (642,500 shares), filed 2026-02-13 for an event on 2025-12-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-30 | 13G/Ano. 1 | Vanguard Capital Managementinvestment adviser | 438K | 4.3% | 2026-09-30 |
| 2026-03-26 | 13G/Ano. 1 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-13 | 13G/Ano. 1 | NEEDHAM INVESTMENT MANAGEMENT L.L.C.investment adviser, other entity | 643K | 6.2% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | NEEDHAM ASSET MANAGEMENT, LLCparent holding company, other entity | 643K | 6.2% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | NEEDHAM AGGRESSIVE GROWTH FUNDinvestment company, other entity | 643K | 6.2% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 1 | GEORGE A. NEEDHAMparent holding company, individual | 643K | 6.2% | 2025-12-31 |
13F holders
Tracked managers holding APT at their latest 13F. JSON1 of the 30 tracked managers held APT at their latest 13F, $3.2M in total at quarter-end prices. Renaissance Technologies is the largest at $3.2M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 0 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Renaissance Technologies | 2026-06-30 | 562K | $3.2M | 0.00% | +18K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Alpha Pro Tech in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Alpha Pro Tech (APT), SEC CIK 884269, listed on NYSE, classified by the SEC as orthopedic, prosthetic & surgical appliances & supplies. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-13.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-05-14.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-30.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-06.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-09-30.JSON and CSV
- Company record
- EDGAR filing index for CIK 884269Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of APT is sold short?
82,886 shares were held short at the 2026-10-15 settlement, 1.0 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is APT's daily short volume?
On 2026-11-02, 17,843 of the 26,335 APT shares reported to FINRA were sold short, 67.8% of the day's reported volume. Short volume is a flow for one day, not a position.
Does APT have fails to deliver?
The SEC's latest file shows 384 APT shares failed to deliver at settlement 2026-10-13. Fails are reported per settlement date and published twice a month with a lag.
Are APT insiders buying or selling?
Insiders at APT reported 2 open-market sells worth $146K in the last 90 days and no open-market buys. Latest filing: Shaw Benjamin A (Director) on 2026-09-30.
Have APT insiders filed to sell?
5 Form 144 notices on file for APT worth $143K at the prices reported; 0 in the last 90 days worth $0. Latest: Garcia David R filed on 2026-05-14 to sell 11,086 shares ($65K) from 2026-05-14.
Who owns 5% or more of APT?
4 holders report 5% or more of APT in their latest filing, all on Schedule 13G (passive). The largest reported stake is NEEDHAM INVESTMENT MANAGEMENT L.L.C. at 6.2% of the class (642,500 shares), filed 2026-02-13 for an event on 2025-12-31.
Which tracked 13F managers own APT?
1 of the 30 tracked 13F managers held APT shares at their latest filing, $3.2M in all. The largest: Renaissance Technologies (562K shares, $3.2M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.