Orthopedic, Prosthetic & Surgical Appliances & Supplies
Standard Industrial Classification: SIC 3842
Industry Insider Sentiment Analysis
The Orthopedic, Prosthetic & Surgical Appliances & Supplies sector (SIC 3842) acts as a critical barometer for broader economic health. Our real-time monitoring reveals total transactions. Monitoring "cluster buying" is one of the most reliable leading indicators for future sector performance. By analyzing aggregate data across this specific Standard Industrial Classification, investors can filter out individual company volatility and identify high-conviction trends. When multiple directors and officers within the same industry move capital simultaneously, it often signals an upcoming sector-wide revaluation or a fundamental shift in supply chain dynamics that has yet to be recognized by the broader public market.
| Filing Date | Trade Date | Ticker | Company | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After |
|---|---|---|---|---|---|---|---|---|---|---|
| 2004-01-29 20:53 | 2004-01-27 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $20.91 | 12,200 | $255,041 | 2,071,622 |
| 2004-01-22 05:49 | 2004-01-20 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $20.34 | 12,200 | $248,148 | 2,083,822 |
| 2004-01-20 19:42 | 2004-01-16 | APT | ALPHA PRO TECH LTD | MANOCK RUSSELL | Director | SELL | $2.34 | 3,500 | $8,190 | 37,900 |
| 2004-01-20 18:37 | 2004-01-16 | MNESP | MSA Safety Inc | MERRY EUGENE W | SELL | $89.09 | 500 | $44,547 | 191,449 | |
| 2004-01-15 22:30 | 2004-01-14 | APT | ALPHA PRO TECH LTD | MANOCK RUSSELL | Director | SELL | $2.25 | 2,000 | $4,500 | 41,400 |
| 2004-01-15 20:28 | 2004-01-13 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $19.30 | 12,200 | $235,460 | 2,096,022 |
| 2004-01-14 18:49 | 2004-01-12 | LAKE | LAKELAND INDUSTRIES INC | SMITH RAYMOND JOSEPH | Director, 10% owner | SELL | $16.51 | 14,165 | $233,870 | 475,480 |
| 2004-01-13 00:13 | 2004-01-10 | APT | ALPHA PRO TECH LTD | RITOTA JOHN | Director | BUY | $0.68 | 225,000 | $152,753 | 252,694 |
| 2004-01-13 00:55 | 2004-01-09 | LAKE | LAKELAND INDUSTRIES INC | SMITH RAYMOND JOSEPH | Director, 10% owner | SELL | $16.64 | 2,960 | $49,263 | 489,755 |
| 2004-01-09 01:01 | 2004-01-07 | LAKE | LAKELAND INDUSTRIES INC | SMITH RAYMOND JOSEPH | Director, 10% owner | SELL | $16.51 | 2,988 | $49,323 | 492,715 |
| 2004-01-08 03:33 | 2004-01-06 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $18.20 | 12,200 | $222,040 | 2,108,222 |
| 2004-01-06 23:44 | 2004-01-06 | APT | ALPHA PRO TECH LTD | HOFFMAN SHELDON | Director, Officer | BUY | $0.49 | 50,000 | $24,500 | 614,636 |
| 2004-01-06 23:40 | 2004-01-06 | APT | ALPHA PRO TECH LTD | MILLAR AL | Director, Officer | BUY | $0.49 | 50,000 | $24,500 | 893,869 |
| 2004-01-07 00:10 | 2004-01-06 | APT | ALPHA PRO TECH LTD | HOFFMAN LLOYD | Officer | BUY | $0.49 | 50,000 | $24,500 | 50,000 |
| 2004-01-06 23:05 | 2003-12-19 | APT | ALPHA PRO TECH LTD | HOFFMAN LLOYD | Officer | SELL | $2.44 | 5,000 | $12,200 | 0 |
| 2004-01-06 00:45 | 2004-01-02 | LAKE | LAKELAND INDUSTRIES INC | SMITH RAYMOND JOSEPH | Director, 10% owner | SELL | $18.04 | 8,887 | $160,353 | 495,703 |
| 2004-01-01 01:03 | 2003-12-30 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $16.78 | 12,200 | $204,655 | 2,120,422 |
| 2003-12-30 00:55 | 2003-12-29 | LAKE | LAKELAND INDUSTRIES INC | SMITH RAYMOND JOSEPH | Director, 10% owner | SELL | $15.70 | 30,400 | $477,396 | 504,590 |
| 2003-12-29 20:26 | 2003-12-24 | LAKE | LAKELAND INDUSTRIES INC | SMITH RAYMOND JOSEPH | Director, 10% owner | SELL | $15.56 | 7,100 | $110,470 | 534,990 |
| 2003-12-24 19:13 | 2003-12-23 | LAKE | LAKELAND INDUSTRIES INC | SMITH RAYMOND JOSEPH | Director, 10% owner | SELL | $15.80 | 12,500 | $197,500 | 542,090 |
| 2003-12-25 01:50 | 2003-12-23 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $16.71 | 12,200 | $203,801 | 2,132,622 |
| 2003-12-19 23:20 | 2003-12-18 | APT | ALPHA PRO TECH LTD | MICHAEL SCHEERER | Officer | BUY | $0.49 | 25,000 | $12,250 | 193,450 |
| 2003-12-19 22:56 | 2003-12-19 | APT | ALPHA PRO TECH LTD | HOFFMAN LLOYD | Officer | SELL | $2.44 | 5,000 | $12,200 | 5,000 |
| 2003-12-19 22:24 | 2003-12-19 | LAKE | LAKELAND INDUSTRIES INC | MCCORMICK JAMES MICHAEL | Officer | SELL | $15.51 | 3,834 | $59,465 | 0 |
| 2003-12-18 20:16 | 2003-12-16 | APT | ALPHA PRO TECH LTD | MICHAEL SCHEERER | Officer | SELL | $2.42 | 20,000 | $48,420 | 168,450 |
| 2003-12-19 00:05 | 2003-12-12 | MNESP | MSA Safety Inc | DEMARIA BENEDICT V | Officer | OPT+S | $71.66 | 3,274 | $234,631 | 11,005 |
| 2003-12-18 21:45 | 2003-12-17 | MNESP | MSA Safety Inc | HOTOPP THOMAS B | Director | SELL | $80.00 | 2,517 | $201,360 | 0 |
| 2003-12-19 01:34 | 2003-12-16 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $16.34 | 12,200 | $199,348 | 2,144,822 |
| 2003-12-17 23:30 | 2003-12-16 | MNESP | MSA Safety Inc | WITMER THOMAS H | Director | OPT+S | $73.00 | 1,500 | $109,500 | 3,864 |
| 2003-12-18 00:10 | 2003-12-16 | MNESP | MSA Safety Inc | BIGLER JOSEPH A | Officer | OPT+S | $73.04 | 3,320 | $242,485 | 12,645 |
| 2003-12-15 21:23 | 2003-12-12 | MNESP | MSA Safety Inc | DEMARIA BENEDICT V | Officer | OPT+S | $71.66 | 3,274 | $234,631 | 10,005 |
| 2003-12-15 21:28 | 2003-12-12 | MNESP | MSA Safety Inc | HOTOPP THOMAS B | Director | SELL | $73.00 | 2,200 | $160,600 | 22,764 |
| 2003-12-11 02:02 | 2003-12-09 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $16.34 | 12,200 | $199,348 | 2,157,022 |
| 2003-12-04 23:22 | 2003-12-02 | MNESP | MSA Safety Inc | HOTOPP THOMAS B | Director | SELL | $74.00 | 300 | $22,200 | 24,964 |
| 2003-12-04 04:11 | 2003-12-02 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $18.40 | 12,200 | $224,419 | 2,169,222 |
| 2003-11-27 00:46 | 2003-11-25 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $17.33 | 12,200 | $211,375 | 2,181,422 |
| 2003-11-20 22:31 | 2003-11-18 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $15.98 | 12,200 | $194,895 | 2,193,622 |
| 2003-11-14 19:47 | 2003-11-12 | LAKE | LAKELAND INDUSTRIES INC | SMITH RAYMOND JOSEPH | Director, 10% owner | SELL | $13.16 | 6,400 | $84,240 | 554,590 |
| 2003-11-13 01:10 | 2003-11-11 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $17.39 | 12,200 | $212,126 | 2,205,822 |
| 2003-11-10 23:42 | 2003-11-06 | MNESP | MSA Safety Inc | CAMPBELL CALVIN A JR | Director | OPT+S | $61.99 | 1,500 | $92,985 | 6,213 |
| 2003-11-08 00:49 | 2003-11-05 | MNESP | MSA Safety Inc | BOVE KERRY M | Officer | OPT+S | $62.39 | 548 | $34,190 | 0 |
| 2003-11-06 02:13 | 2003-11-04 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $16.81 | 12,200 | $205,021 | 2,218,022 |
| 2003-11-04 22:17 | 2003-11-03 | ALGN | Align Technology, Inc. | BREELAND JOE | Officer | SELL | $16.06 | 25,000 | $401,500 | 0 |
| 2003-11-04 22:38 | 2003-11-03 | ALGN | Align Technology, Inc. | GEORGE ROGER E | Officer | OPT+S | $16.06 | 11,500 | $184,690 | 585 |
| 2003-10-31 00:02 | 2003-10-30 | ALGN | Align Technology, Inc. | THROWER DAVID | Officer | OPT+S | $15.30 | 12,500 | $191,250 | 7,000 |
| 2003-10-30 04:24 | 2003-10-28 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $15.56 | 12,200 | $189,832 | 2,230,222 |
| 2003-10-30 04:33 | 2003-10-29 | ALGN | Align Technology, Inc. | ABOLFATHI AMIR | Officer | SELL | $15.28 | 60,000 | $916,956 | 103,732 |
| 2003-10-23 02:55 | 2003-10-21 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $14.44 | 12,200 | $176,168 | 2,242,422 |
| 2003-10-16 01:25 | 2003-10-14 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $15.68 | 12,200 | $191,296 | 2,254,622 |
| 2003-10-09 00:25 | 2003-10-07 | ALGN | Align Technology, Inc. | WIRTH KELSEY | Director | SELL | $13.56 | 12,200 | $165,371 | 2,266,822 |
Sector-Wide Insider Alpha
Analyzing insider movements across the Orthopedic, Prosthetic & Surgical Appliances & Supplies sector provides a macro-view of executive conviction. When multiple leaders in different companies within the same SIC code (3842) simultaneously buy shares, it often indicates an industry-wide undervaluation or a positive shift in market cycles.
SEC Filings in Orthopedic, Prosthetic & Surgical Appliances & Supplies
Every transaction in the Orthopedic, Prosthetic & Surgical Appliances & Supplies industry is reported via Form 4 disclosures. By filtering these filings by industry, investors can detect institutional-scale sentiment shifts before they are reflected in broader market indices, following the capital flow of those with intimate industry knowledge.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.