Aircraft Parts & Auxiliary Equipment, NEC
Standard Industrial Classification: SIC 3728
Industry Insider Sentiment Analysis
The Aircraft Parts & Auxiliary Equipment, NEC sector (SIC 3728) 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-03-19 20:33 | 2026-03-18 | TDG | TransDigm Group INC | Howley W Nicholas | Director | OPT+S | $1,213.05 | 10,132 | $12,290,630 | 21,548 |
| 2026-03-17 20:05 | 2026-03-16 | TDG | TransDigm Group INC | Reiss Joel | Officer | OPT+S | $1,243.70 | 3,900 | $4,850,431 | 3,600 |
| 2026-03-17 20:16 | 2026-03-13 | LOAR | Loar Holdings Inc. | LEVY PAUL S | Director | BUY | $64.90 | 75,000 | $4,867,500 | 8,087,580 |
| 2026-03-13 21:35 | 2026-03-12 | LOAR | Loar Holdings Inc. | Carpenito Anthony | Director, 10% owner | BUY | $64.97 | 4,800 | $311,857 | 4,800 |
| 2026-03-13 19:35 | 2026-03-12 | LOAR | Loar Holdings Inc. | Bobbili Raja | Director, 10% owner | BUY | $63.61 | 50,000 | $3,180,485 | 50,000 |
| 2026-03-13 01:09 | 2026-03-10 | LOAR | Loar Holdings Inc. | Charles Dirkson R | Director, Officer | BUY | $67.45 | 44,000 | $2,967,831 | 4,087,005 |
| 2026-03-12 21:04 | 2026-03-10 | DCO | DUCOMMUN INC /DE/ | BALDRIDGE RICHARD A | Director | SELL | $130.83 | 10,440 | $1,365,865 | 20,100 |
| 2026-03-10 22:03 | 2026-03-10 | DCO | DUCOMMUN INC /DE/ | Mookerji Suman B. | Officer | SELL | $131.90 | 7,791 | $1,027,633 | 29,393 |
| 2026-03-07 00:54 | 2026-03-04 | DCO | DUCOMMUN INC /DE/ | Mookerji Suman B. | Officer | OPT+S | $134.21 | 14,709 | $1,974,095 | 37,184 |
| 2026-02-28 00:22 | 2026-02-25 | TDG | TransDigm Group INC | SMALL ROBERT J | Director | BUY | $1,285.00 | 1 | $1,285 | 366,142 |
| 2026-02-21 00:15 | 2026-02-18 | TDG | TransDigm Group INC | Howley W Nicholas | Director | OPT+S | $1,307.68 | 10,168 | $13,296,511 | 21,548 |
| 2026-02-19 00:00 | 2026-02-17 | TDG | TransDigm Group INC | Reiss Joel | Officer | OPT+S | $1,293.88 | 3,900 | $5,046,141 | 3,600 |
| 2026-02-10 00:30 | 2026-02-06 | TDG | TransDigm Group INC | Lisman Michael | Director, Officer | BUY | $1,284.26 | 950 | $1,220,048 | 3,259 |
| 2026-02-04 00:39 | 2026-02-02 | TDG | TransDigm Group INC | Stein Kevin M | Director | SELL | $1,434.49 | 11,075 | $15,886,980 | 8,158 |
| 2026-02-04 00:37 | 2026-02-02 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,425.79 | 36,925 | $52,647,126 | 19,233 |
| 2026-02-04 00:35 | 2026-02-02 | TDG | TransDigm Group INC | Murphy Patrick Joseph | Officer | OPT+S | $1,430.10 | 290 | $414,729 | 1,055 |
| 2026-01-17 01:59 | 2026-01-15 | TDG | TransDigm Group INC | Reiss Joel | Officer | OPT+S | $1,429.92 | 3,900 | $5,576,695 | 3,600 |
| 2026-01-17 01:58 | 2026-01-14 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,406.38 | 7,627 | $10,726,454 | 8,158 |
| 2026-01-10 00:25 | 2026-01-08 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,407.25 | 17,373 | $24,448,106 | 8,158 |
| 2026-01-07 00:32 | 2026-01-05 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,373.59 | 25,000 | $34,339,838 | 8,158 |
| 2026-01-06 01:17 | 2026-01-02 | TDG | TransDigm Group INC | Murphy Patrick Joseph | Officer | OPT+S | $1,329.03 | 290 | $385,419 | 1,055 |
| 2025-12-17 00:09 | 2025-12-15 | TDG | TransDigm Group INC | Reiss Joel | Officer | OPT+S | $1,290.52 | 3,900 | $5,033,033 | 3,600 |
| 2025-12-15 20:58 | 2025-12-12 | KRMN | Karman Holdings Inc. | Koblinski Anthony | Director, Officer | SELL | $69.31 | 75,000 | $5,198,250 | 2,315,826 |
| 2025-12-12 00:56 | 2025-12-10 | DCO | DUCOMMUN INC /DE/ | Redondo Jerry L | Officer | SELL | $92.86 | 2,000 | $185,720 | 65,269 |
| 2025-12-12 00:13 | 2025-12-10 | TDG | TransDigm Group INC | SMALL ROBERT J | Director | OPT+S | $1,290.19 | 4,700 | $6,063,879 | 5,625 |
| 2025-12-10 05:09 | 2025-12-09 | TDG | TransDigm Group INC | SMALL ROBERT J | Director | SELL | $1,335.72 | 90,953 | $121,487,741 | 68,139 |
| 2025-12-08 21:42 | 2025-12-05 | KRMN | Karman Holdings Inc. | Koblinski Anthony | Director, Officer | SELL | $66.51 | 75,000 | $4,988,250 | 2,390,826 |
| 2025-12-06 00:10 | 2025-12-04 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,362.29 | 17,526 | $23,875,414 | 8,158 |
| 2025-12-04 00:03 | 2025-12-01 | ATRO | ASTRONICS CORP | Mulato James | SELL | $53.24 | 9,734 | $518,238 | 27,078 | |
| 2025-12-03 00:31 | 2025-12-01 | TDG | TransDigm Group INC | Murphy Patrick Joseph | Officer | OPT+S | $1,351.06 | 290 | $391,807 | 1,055 |
| 2025-12-02 01:12 | 2025-11-28 | KRMN | Karman Holdings Inc. | Koblinski Anthony | Director, Officer | SELL | $67.40 | 75,000 | $5,055,000 | 2,465,826 |
| 2025-12-02 00:07 | 2025-11-28 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,360.73 | 4,592 | $6,248,487 | 8,158 |
| 2025-11-27 00:52 | 2025-11-25 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,360.57 | 4,217 | $5,737,541 | 8,158 |
| 2025-11-25 01:02 | 2025-11-21 | KRMN | Karman Holdings Inc. | Koblinski Anthony | Director, Officer | SELL | $58.48 | 75,000 | $4,386,000 | 2,540,826 |
| 2025-11-25 00:08 | 2025-11-21 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,360.31 | 230 | $312,871 | 8,158 |
| 2025-11-22 00:12 | 2025-11-20 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,360.89 | 1,104 | $1,502,424 | 8,158 |
| 2025-11-20 00:10 | 2025-11-18 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,361.57 | 7,191 | $9,791,048 | 8,158 |
| 2025-11-18 20:11 | 2025-11-17 | KRMN | Karman Holdings Inc. | Willis Michael | Officer | SELL | $58.63 | 115,000 | $6,742,887 | 859,709 |
| 2025-11-19 00:50 | 2025-11-17 | TDG | TransDigm Group INC | Reiss Joel | Officer | OPT+S | $1,340.00 | 3,900 | $5,225,988 | 3,600 |
| 2025-11-18 00:30 | 2025-11-14 | TDG | TransDigm Group INC | Lisman Michael | Director, Officer | BUY | $1,339.14 | 1,954 | $2,616,674 | 1,954 |
| 2025-11-18 00:28 | 2025-11-17 | TDG | TransDigm Group INC | Howley W Nicholas | Director | OPT+S | $1,334.92 | 2,736 | $3,652,334 | 21,548 |
| 2025-11-14 22:24 | 2025-11-13 | KRMN | Karman Holdings Inc. | Beaudoin Jonathan | Officer | SELL | $63.69 | 74,000 | $4,712,875 | 666,861 |
| 2025-11-14 22:23 | 2025-11-13 | KRMN | Karman Holdings Inc. | Sawhill Stephanie | Officer | SELL | $63.93 | 62,000 | $3,963,623 | 504,939 |
| 2025-11-14 01:10 | 2025-11-12 | KRMN | Karman Holdings Inc. | Raduenz Brian | Director | SELL | $68.00 | 90,000 | $6,120,135 | 254,105 |
| 2025-11-13 02:04 | 2025-11-10 | DCO | DUCOMMUN INC /DE/ | Redondo Jerry L | Officer | SELL | $93.83 | 1,594 | $149,565 | 67,269 |
| 2025-11-06 22:37 | 2025-11-06 | PKE | PARK AEROSPACE CORP | Smith Carl William | Director | OPT+S | $19.44 | 3,000 | $58,320 | 1,000 |
| 2025-11-05 00:22 | 2025-11-03 | TDG | TransDigm Group INC | Murphy Patrick Joseph | Officer | OPT+S | $1,310.00 | 290 | $379,900 | 1,055 |
| 2025-10-29 00:16 | 2025-10-27 | TDG | TransDigm Group INC | Stein Kevin M | Director | OPT+S | $1,360.00 | 700 | $952,000 | 8,158 |
| 2025-10-29 00:12 | 2025-10-27 | TDG | TransDigm Group INC | Murphy Patrick Joseph | Officer | OPT+S | $1,354.76 | 580 | $785,761 | 1,055 |
| 2025-10-21 23:57 | 2025-10-20 | TDG | TransDigm Group INC | Reiss Joel | Officer | OPT+S | $1,279.59 | 3,000 | $3,838,757 | 3,600 |
Sector-Wide Insider Alpha
Analyzing insider movements across the Aircraft Parts & Auxiliary Equipment, NEC sector provides a macro-view of executive conviction. When multiple leaders in different companies within the same SIC code (3728) simultaneously buy shares, it often indicates an industry-wide undervaluation or a positive shift in market cycles.
SEC Filings in Aircraft Parts & Auxiliary Equipment, NEC
Every transaction in the Aircraft Parts & Auxiliary Equipment, NEC 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.