Services-Engineering Services
Standard Industrial Classification: SIC 8711
Industry Insider Sentiment Analysis
The Services-Engineering Services sector (SIC 8711) 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2021-09-01 02:01 | 2021-08-30 | TTEK | TETRA TECH INC | LEWIS J CHRISTOPHER | Director | OPT+S | $143.11 | 850 | $121,643 | 67,776 |
| 2021-08-28 02:06 | 2021-08-25 | ACM | Aecom | Tishman Daniel R. | Director | SELL | $66.00 | 29,792 | $1,966,293 | 89,599 |
| 2021-08-19 14:58 | 2021-08-17 | MG | Mistras Group, Inc. | Stamatakis Manuel N. | Director | BUY | $9.62 | 5,000 | $48,100 | 184,729 |
| 2021-08-13 02:02 | 2021-08-11 | TTEK | TETRA TECH INC | Teufele Bernard | Officer | SELL | $138.42 | 860 | $119,042 | 8,933 |
| 2021-06-22 01:15 | 2021-06-17 | WLDN | Willdan Group, Inc. | CHEN MICAH | Officer | SELL | $37.92 | 2,000 | $75,840 | 19,044 |
| 2021-06-18 01:19 | 2021-06-16 | WLDN | Willdan Group, Inc. | CHEN MICAH | Officer | SELL | $39.23 | 1,664 | $65,279 | 21,044 |
| 2021-06-16 23:27 | 2021-06-14 | MG | Mistras Group, Inc. | GLANTON RICHARD H | Director | SELL | $10.95 | 18,000 | $197,100 | 22,215 |
| 2021-06-16 01:13 | 2021-06-14 | WLDN | Willdan Group, Inc. | WHITELAW PAUL MILTON | Officer | SELL | $40.36 | 2,000 | $80,720 | 14,837 |
| 2021-06-16 01:00 | 2021-06-11 | WLDN | Willdan Group, Inc. | Brisbin Thomas Donald | Director, Officer | SELL | $39.32 | 10,000 | $393,160 | 353,353 |
| 2021-06-11 03:47 | 2021-06-09 | WLDN | Willdan Group, Inc. | WHITELAW PAUL MILTON | Officer | SELL | $38.70 | 5,445 | $210,722 | 16,633 |
| 2021-06-08 02:07 | 2021-06-07 | TTEK | TETRA TECH INC | Volpi Kirsten M | Director | SELL | $119.15 | 5,575 | $664,261 | 13,997 |
| 2021-06-03 02:07 | 2021-06-02 | TTEK | TETRA TECH INC | Ritrievi Kimberly E | Director | SELL | $119.05 | 8,524 | $1,014,752 | 33,376 |
| 2021-05-28 01:34 | 2021-05-26 | WLDN | Willdan Group, Inc. | Brisbin Thomas Donald | Director, Officer | OPT+S | $36.65 | 1,148 | $42,074 | 339,441 |
| 2021-05-27 03:12 | 2021-05-25 | WLDN | Willdan Group, Inc. | Brisbin Thomas Donald | Director, Officer | OPT+S | $36.31 | 12,461 | $452,459 | 338,540 |
| 2021-05-25 17:59 | 2021-05-24 | VSEC | VSE CORP | FERGUSON III MARK E | Director | BUY | $46.06 | 400 | $18,424 | 2,258 |
| 2021-05-25 01:03 | 2021-05-21 | WLDN | Willdan Group, Inc. | Brisbin Thomas Donald | Director, Officer | OPT+S | $30.09 | 390 | $11,735 | 328,752 |
| 2021-05-22 02:25 | 2021-05-20 | TTEK | TETRA TECH INC | SHOEMAKER LESLIE L | Officer | SELL | $118.81 | 13,457 | $1,598,861 | 59,684 |
| 2021-05-12 23:20 | 2021-05-11 | MG | Mistras Group, Inc. | Stamatakis Manuel N. | Director | BUY | $9.98 | 15,000 | $149,700 | 175,372 |
| 2021-03-27 01:04 | 2021-03-22 | WLDN | Willdan Group, Inc. | Brisbin Thomas Donald | Director, Officer | SELL | $37.92 | 18,709 | $709,475 | 328,440 |
| 2021-03-27 01:03 | 2021-03-22 | WLDN | Willdan Group, Inc. | Chow Daniel | Officer | SELL | $37.92 | 2,297 | $87,107 | 55,233 |
| 2021-03-27 01:02 | 2021-03-22 | WLDN | Willdan Group, Inc. | CHEN MICAH | Officer | SELL | $37.92 | 1,838 | $69,697 | 13,971 |
| 2021-03-27 01:02 | 2021-03-22 | WLDN | Willdan Group, Inc. | McLaughlin Stacy B. | Officer | SELL | $37.92 | 3,058 | $115,966 | 19,411 |
| 2021-03-27 01:01 | 2021-03-22 | WLDN | Willdan Group, Inc. | WHITELAW PAUL MILTON | Officer | SELL | $37.92 | 1,838 | $69,697 | 22,078 |
| 2021-03-27 01:03 | 2011-03-23 | WLDN | Willdan Group, Inc. | BIEBER MICHAEL A | Officer | SELL | $37.92 | 13,200 | $500,564 | 71,799 |
| 2021-03-24 01:14 | 2021-03-11 | WLDN | Willdan Group, Inc. | Brisbin Thomas Donald | Director, Officer | SELL | $46.91 | 16,893 | $792,432 | 313,433 |
| 2021-03-24 01:13 | 2021-03-11 | WLDN | Willdan Group, Inc. | Chow Daniel | Officer | SELL | $46.91 | 2,217 | $103,997 | 51,507 |
| 2021-03-24 01:13 | 2021-03-11 | WLDN | Willdan Group, Inc. | McLaughlin Stacy B. | Officer | SELL | $46.91 | 2,848 | $133,598 | 17,653 |
| 2021-03-24 01:13 | 2021-03-11 | WLDN | Willdan Group, Inc. | CHEN MICAH | Officer | SELL | $46.82 | 1,756 | $82,222 | 10,993 |
| 2021-03-24 01:12 | 2021-03-11 | WLDN | Willdan Group, Inc. | WHITELAW PAUL MILTON | Officer | OPT+S | $42.30 | 6,763 | $286,101 | 23,916 |
| 2021-03-24 01:11 | 2021-03-11 | WLDN | Willdan Group, Inc. | Procell Adam C | Officer | SELL | $46.86 | 783 | $36,688 | 19,002 |
| 2021-03-24 01:06 | 2021-03-19 | WLDN | Willdan Group, Inc. | COY DEBRA | Director | SELL | $40.72 | 1,000 | $40,720 | 8,504 |
| 2021-03-24 01:14 | 2021-03-11 | WLDN | Willdan Group, Inc. | BIEBER MICHAEL A | Officer | SELL | $46.91 | 13,348 | $626,136 | 62,121 |
| 2021-02-25 03:22 | 2021-02-22 | TTEK | TETRA TECH INC | CARTER BRIAN N | Officer | OPT+S | $141.24 | 6,459 | $912,246 | 6,790 |
| 2021-02-25 03:22 | 2021-02-22 | TTEK | TETRA TECH INC | BROWNLIE WILLIAM R | Officer | OPT+S | $141.82 | 12,788 | $1,813,616 | 86,772 |
| 2021-02-20 02:48 | 2021-02-18 | TTEK | TETRA TECH INC | LEMMON RICHARD A | Officer | OPT+S | $138.58 | 13,430 | $1,861,100 | 37,465 |
| 2021-02-18 02:48 | 2021-02-16 | TTEK | TETRA TECH INC | Amidon Derek G | Officer | OPT+S | $136.69 | 7,447 | $1,017,962 | 1,484 |
| 2021-02-12 02:26 | 2021-02-09 | TTEK | TETRA TECH INC | O'Rourke Brendan M. | Officer | SELL | $135.29 | 1,200 | $162,343 | 472 |
| 2021-02-09 04:09 | 2021-02-08 | TTEK | TETRA TECH INC | Rynning Mark A | Officer | SELL | $136.04 | 3,273 | $445,264 | 236 |
| 2021-02-09 04:08 | 2021-02-08 | TTEK | TETRA TECH INC | CHRISTENSEN CRAIG L | Officer | OPT+S | $135.15 | 4,000 | $540,600 | 34,539 |
| 2021-02-09 04:09 | 2021-02-05 | TTEK | TETRA TECH INC | THOMPSON J KENNETH | Director | OPT+S | $134.21 | 4,200 | $563,669 | 24,438 |
| 2021-02-05 02:20 | 2021-02-03 | TTEK | TETRA TECH INC | BURDICK STEVEN M | Officer | SELL | $129.45 | 10,801 | $1,398,239 | 55,980 |
| 2021-02-05 02:20 | 2021-02-02 | TTEK | TETRA TECH INC | LEWIS J CHRISTOPHER | Director | OPT+S | $127.61 | 1,449 | $184,900 | 64,426 |
| 2020-12-22 01:44 | 2020-12-18 | MG | Mistras Group, Inc. | Stamatakis Manuel N. | Director | BUY | $7.35 | 20,000 | $147,000 | 156,262 |
| 2020-12-18 21:33 | 2020-12-16 | WLDN | Willdan Group, Inc. | CHEN MICAH | Officer | SELL | $40.30 | 8,000 | $322,360 | 7,905 |
| 2020-12-18 21:31 | 2020-12-16 | WLDN | Willdan Group, Inc. | WHITELAW PAUL MILTON | Officer | OPT+S | $39.84 | 10,000 | $398,400 | 15,933 |
| 2020-12-09 19:13 | 2020-12-08 | ACFN | Acorn Energy Inc. | LOEB JAN H | Director, Officer, 10% owner | BUY | $0.30 | 164,501 | $49,350 | 2,021,831 |
| 2020-12-09 02:36 | 2020-12-08 | TTEK | TETRA TECH INC | Volpi Kirsten M | Director | SELL | $120.16 | 6,468 | $777,199 | 19,612 |
| 2020-12-09 02:29 | 2020-12-04 | TTEK | TETRA TECH INC | BATRACK DAN L | Director, Officer | SELL | $121.46 | 50,000 | $6,072,960 | 204,725 |
| 2020-12-03 00:59 | 2020-11-30 | TTEK | TETRA TECH INC | THOMPSON J KENNETH | Director | SELL | $120.89 | 2,500 | $302,231 | 24,438 |
| 2020-12-03 00:59 | 2020-11-30 | TTEK | TETRA TECH INC | LEWIS J CHRISTOPHER | Director | SELL | $119.74 | 8,519 | $1,020,055 | 57,875 |
Sector-Wide Insider Alpha
Analyzing insider movements across the Services-Engineering Services sector provides a macro-view of executive conviction. When multiple leaders in different companies within the same SIC code (8711) simultaneously buy shares, it often indicates an industry-wide undervaluation or a positive shift in market cycles.
SEC Filings in Services-Engineering Services
Every transaction in the Services-Engineering Services 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.