Services-Commercial Physical & Biological Research
Standard Industrial Classification: SIC 8731
Industry Insider Sentiment Analysis
The Services-Commercial Physical & Biological Research sector (SIC 8731) acts as a critical barometer for broader economic health. Our real-time monitoring reveals 2487 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023-08-31 00:22 | 2023-08-28 | MXCT | MAXCYTE, INC. | Johnston John Joseph | Director | OPT+S | $3.70 | 5,000 | $18,500 | 120,583 |
| 2023-08-29 23:23 | 2023-08-24 | CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | WALLMAN RICHARD F | Director | BUY | $198.79 | 1,000 | $198,786 | 1,000 |
| 2023-08-16 23:15 | 2023-08-14 | MEDP | Medpace Holdings, Inc. | Kraft Robert O. | Director | OPT+S | $265.67 | 13,782 | $3,661,464 | 188 |
| 2023-08-15 23:56 | 2023-08-14 | OABI | OmniAb, Inc. | FOEHR MATTHEW W | Director, Officer | BUY | $5.48 | 45,000 | $246,600 | 2,332,919 |
| 2023-08-14 23:17 | 2023-08-10 | CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | Barbo William D | Officer | OPT+S | $217.24 | 5,763 | $1,251,954 | 3,592 |
| 2023-08-14 23:15 | 2023-08-10 | CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | Knell Michael Gunnar | Officer | OPT+S | $216.54 | 1,471 | $318,530 | 9,940 |
| 2023-08-14 23:11 | 2023-08-10 | CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | LaPlume Joseph W | Officer | SELL | $216.52 | 700 | $151,564 | 24,983 |
| 2023-08-03 23:00 | 2023-08-01 | INCY | INCYTE CORP | Stein Steven H | Officer | SELL | $63.28 | 21,511 | $1,361,216 | 97,583 |
| 2023-08-02 23:15 | 2023-07-31 | MEDP | Medpace Holdings, Inc. | Brady Kevin M. | Officer | OPT+S | $255.00 | 7,000 | $1,785,000 | 6,000 |
| 2023-07-31 23:41 | 2023-07-27 | MEDP | Medpace Holdings, Inc. | EWALD STEPHEN P | Officer | OPT+S | $254.39 | 21,850 | $5,558,422 | 14,854 |
| 2023-07-28 23:30 | 2023-07-26 | MXCT | MAXCYTE, INC. | Johnston John Joseph | Director | OPT+S | $4.75 | 5,000 | $23,750 | 120,583 |
| 2023-07-18 22:06 | 2023-07-14 | FOXO | FOXO TECHNOLOGIES INC. | Dowling Vincent J. Jr | 10% owner | SELL | $0.16 | 3,000 | $491 | 4,647,405 |
| 2023-07-13 01:06 | 2023-07-10 | MXCT | MAXCYTE, INC. | Doerfler Douglas | Director, Officer | OPT+S | $5.03 | 30,000 | $150,852 | 333,197 |
| 2023-06-29 00:05 | 2023-06-26 | MXCT | MAXCYTE, INC. | Johnston John Joseph | Director | OPT+S | $4.44 | 15,000 | $66,603 | 120,583 |
| 2023-06-28 00:45 | 2023-06-23 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.05 | 2,091 | $94,202 | 4,246,120 |
| 2023-06-23 00:27 | 2023-06-20 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.01 | 19,346 | $870,678 | 4,248,211 |
| 2023-06-17 00:24 | 2023-06-14 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.04 | 33,027 | $1,487,539 | 4,267,557 |
| 2023-06-15 23:30 | 2023-06-13 | MXCT | MAXCYTE, INC. | Doerfler Douglas | Director, Officer | OPT+S | $5.04 | 43,851 | $220,860 | 333,197 |
| 2023-06-15 00:45 | 2023-06-12 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.05 | 2,000 | $90,101 | 4,300,584 |
| 2023-06-13 00:04 | 2023-06-08 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.34 | 12,626 | $572,478 | 4,302,584 |
| 2023-06-12 23:47 | 2023-06-09 | OABI | OmniAb, Inc. | FOEHR MATTHEW W | Director, Officer | BUY | $4.52 | 115,000 | $519,800 | 2,574,009 |
| 2023-06-12 23:32 | 2023-06-08 | MEDP | Medpace Holdings, Inc. | Troendle August J. | Director, Officer, 10% owner | SELL | $220.85 | 49,347 | $10,898,285 | 6,233,019 |
| 2023-06-12 23:30 | 2023-06-08 | MEDP | Medpace Holdings, Inc. | Medpace Investors, LLC | 10% owner | SELL | $220.85 | 49,347 | $10,898,285 | 6,233,019 |
| 2023-06-08 23:16 | 2023-06-06 | MEDP | Medpace Holdings, Inc. | Troendle August J. | Director, Officer, 10% owner | SELL | $222.15 | 169,005 | $37,544,579 | 6,282,366 |
| 2023-06-08 23:15 | 2023-06-06 | MEDP | Medpace Holdings, Inc. | Medpace Investors, LLC | 10% owner | SELL | $222.15 | 169,005 | $37,544,579 | 6,282,366 |
| 2023-06-08 01:12 | 2023-06-05 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.86 | 38,629 | $1,771,402 | 4,315,210 |
| 2023-06-08 00:31 | 2023-06-05 | IQV | IQVIA HOLDINGS INC. | Knightly Kevin C | Officer | SELL | $201.89 | 5,820 | $1,175,000 | 0 |
| 2023-06-03 00:45 | 2023-05-31 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.25 | 21,095 | $954,494 | 4,353,839 |
| 2023-06-02 00:56 | 2023-05-31 | ISPC | iSpecimen Inc. | Curley Tracy | Director, Officer | BUY | $1.25 | 4,400 | $5,500 | 49,541 |
| 2023-06-01 04:29 | 2023-05-26 | IQV | IQVIA HOLDINGS INC. | Knightly Kevin C | Officer | SELL | $198.66 | 1 | $199 | 0 |
| 2023-05-26 00:41 | 2023-05-23 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.00 | 29,000 | $1,305,000 | 4,374,934 |
| 2023-05-25 23:45 | 2023-05-23 | OABI | OmniAb, Inc. | HIGGINS JOHN L | Director | OPT+S | $4.05 | 9,000 | $36,450 | 2,462,686 |
| 2023-05-23 23:12 | 2023-05-19 | OABI | OmniAb, Inc. | HIGGINS JOHN L | Director | OPT+S | $4.05 | 1,000 | $4,050 | 2,462,686 |
| 2023-05-20 00:03 | 2023-05-18 | OABI | OmniAb, Inc. | HIGGINS JOHN L | Director | OPT+S | $3.89 | 50,000 | $194,500 | 2,462,686 |
| 2023-05-16 21:18 | 2023-05-15 | CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | LaPlume Joseph W | Officer | SELL | $190.39 | 345 | $65,685 | 24,026 |
| 2023-05-15 23:02 | 2023-05-12 | OABI | OmniAb, Inc. | FOEHR MATTHEW W | Director, Officer | BUY | $3.40 | 440,000 | $1,496,000 | 2,438,414 |
| 2023-05-15 21:49 | 2023-05-12 | CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | LaPlume Joseph W | Officer | SELL | $193.03 | 959 | $185,116 | 24,371 |
| 2023-05-15 21:42 | 2023-05-11 | CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | MASSARO GEORGE | Director | SELL | $193.43 | 288 | $55,708 | 4,964 |
| 2023-05-06 00:09 | 2023-05-03 | MXCT | MAXCYTE, INC. | Doerfler Douglas | Director, Officer | OPT+S | $5.02 | 16,149 | $81,068 | 333,197 |
| 2023-04-27 23:24 | 2023-04-25 | MEDP | Medpace Holdings, Inc. | Troendle August J. | Director, Officer, 10% owner | SELL | $221.83 | 31,648 | $7,020,476 | 6,451,371 |
| 2023-04-27 23:23 | 2023-04-25 | MEDP | Medpace Holdings, Inc. | Medpace Investors, LLC | 10% owner | SELL | $221.83 | 31,648 | $7,020,476 | 6,451,371 |
| 2023-04-26 00:33 | 2023-04-21 | NRC | NATIONAL RESEARCH CORP | Amandla MK Trust | 10% owner | SELL | $45.03 | 1,300 | $58,537 | 4,403,934 |
| 2023-04-13 00:03 | 2023-04-10 | MXCT | MAXCYTE, INC. | Ross Thomas M. | Officer | OPT+S | $5.00 | 14,134 | $70,670 | 0 |
| 2023-04-12 23:37 | 2023-04-10 | MXCT | MAXCYTE, INC. | Doerfler Douglas | Director, Officer | OPT+S | $5.00 | 15,000 | $75,000 | 333,197 |
| 2023-04-07 23:43 | 2023-04-05 | MXCT | MAXCYTE, INC. | Ross Thomas M. | Officer | OPT+S | $5.02 | 34,160 | $171,616 | 0 |
| 2023-04-07 23:42 | 2023-04-05 | MXCT | MAXCYTE, INC. | Doerfler Douglas | Director, Officer | OPT+S | $5.02 | 34,823 | $174,951 | 333,197 |
| 2023-04-05 02:00 | 2023-03-31 | MXCT | MAXCYTE, INC. | Ross Thomas M. | Officer | OPT+S | $5.02 | 9,973 | $50,084 | 0 |
| 2023-04-05 01:59 | 2023-03-31 | MXCT | MAXCYTE, INC. | Doerfler Douglas | Director, Officer | OPT+S | $5.02 | 10,177 | $51,110 | 333,197 |
| 2023-04-05 00:49 | 2023-03-31 | NRC | NATIONAL RESEARCH CORP | RAASCH JONA S | Officer | SELL | $43.61 | 23,931 | $1,043,511 | 1,688 |
| 2023-03-31 23:17 | 2023-03-29 | NRC | NATIONAL RESEARCH CORP | RAASCH JONA S | Officer | SELL | $43.49 | 25,000 | $1,087,263 | 25,619 |
Sector-Wide Insider Alpha
Analyzing insider movements across the Services-Commercial Physical & Biological Research sector provides a macro-view of executive conviction. When multiple leaders in different companies within the same SIC code (8731) simultaneously buy shares, it often indicates an industry-wide undervaluation or a positive shift in market cycles.
SEC Filings in Services-Commercial Physical & Biological Research
Every transaction in the Services-Commercial Physical & Biological Research 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.