DGX Insider Trading
QUEST DIAGNOSTICS INC | Services-Medical Laboratories
Comprehensive Trading Performance Summary
The investment history of corporate insiders at QUEST DIAGNOSTICS INC provides a unique lens into the internal conviction of the company's leadership. By analyzing SEC Form 4 filings, investors can track how directors and officers are allocating their own capital. High-conviction buying often signals that management believes the current market price significantly undervalues future growth prospects, while strategic selling might occur for personal liquidity or portfolio diversification. Monitoring these shifts in ownership is essential for understanding the alignment between management and shareholders in the Services-Medical Laboratories sector.
Transactions on Chart
Open Full Chart| Filing Date | Trade Date | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After | Change, % |
|---|---|---|---|---|---|---|---|---|---|
| 2014-02-15 00:20 | 2014-02-12 | BUEHLER WILLIAM F | Director | OPT+S | $52.15 | 30,000 | $1,564,449 | 26,225 | 0.0% |
| 2014-02-08 00:58 | 2014-02-06 | MAIN TIMOTHY L | Director | BUY | $50.71 | 5,000 | $253,526 | 5,658 | +759.9% |
| 2013-11-14 00:33 | 2013-11-11 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | OPT+S | $64.02 | 24,239 | $1,551,686 | 45,306 | 0.0% |
| 2013-11-06 00:35 | 2013-11-04 | BONGIORNO THOMAS F | Officer - VP and Corporate Controller | OPT+S | $62.49 | 16,667 | $1,041,507 | 14,197 | 0.0% |
| 2013-11-06 00:33 | 2013-11-05 | BALDWIN JOHN C MD | Director | SELL | $63.00 | 658 | $41,454 | 9,951 | -6.2% |
| 2013-11-05 00:39 | 2013-10-31 | BALDWIN JOHN C MD | Director | OPT+S | $59.70 | 8,000 | $477,600 | 10,609 | 0.0% |
| 2013-10-30 23:27 | 2013-10-29 | BONGIORNO THOMAS F | Officer - VP and Corporate Controller | OPT+S | $59.00 | 6,000 | $354,000 | 14,167 | 0.0% |
| 2013-10-25 23:31 | 2013-10-25 | PFEIFFER GARY M | Director | SELL | $58.10 | 2,000 | $116,200 | 13,927 | -12.6% |
| 2013-09-18 23:43 | 2013-09-16 | Doherty Catherine T. | Officer - SVP, Clinical Franchises | OPT+S | $62.00 | 43,334 | $2,686,708 | 72,295 | 0.0% |
| 2013-08-15 23:32 | 2013-08-14 | Doherty Catherine T. | Officer - SVP, Clinical Franchises | OPT+S | $59.85 | 33,000 | $1,975,126 | 72,290 | 0.0% |
| 2013-08-12 23:46 | 2013-08-12 | ZIEGLER JOHN B | Director | SELL | $59.45 | 1,953 | $116,109 | 15,876 | -11.0% |
| 2013-08-12 23:45 | 2013-08-08 | BONGIORNO THOMAS F | Officer - VP and Corporate Controller | OPT+S | $59.33 | 10,864 | $644,585 | 14,086 | 0.0% |
| 2013-07-25 23:40 | 2013-07-23 | BRITELL JENNE K | Director | SELL | $58.99 | 4,200 | $247,767 | 12,227 | -25.6% |
| 2013-06-19 23:35 | 2013-06-17 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | OPT+S | $62.64 | 126,667 | $7,934,168 | 45,191 | 0.0% |
| 2013-05-24 01:47 | 2013-05-22 | ZIEGLER JOHN B | Director | OPT+S | $62.00 | 31,362 | $1,944,444 | 17,829 | 0.0% |
| 2013-05-15 23:39 | 2013-05-14 | BALDWIN JOHN C MD | Director | SELL | $59.41 | 1,214 | $72,122 | 8,634 | -12.3% |
| 2013-05-03 23:33 | 2013-05-02 | WILENSKY GAIL R | Director | OPT+S | $57.20 | 10,000 | $572,008 | 13,952 | 0.0% |
| 2013-04-12 23:39 | 2013-04-11 | ZIEGLER JOHN B | Director | OPT+S | $58.35 | 1,470 | $85,775 | 15,854 | 0.0% |
| 2013-03-08 00:32 | 2013-03-06 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | SELL | $56.46 | 1,992 | $112,465 | 45,128 | -4.2% |
| 2013-03-07 00:45 | 2013-03-06 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | SELL | $56.64 | 778 | $44,063 | 45,128 | -1.7% |
| 2013-02-23 00:33 | 2013-02-20 | ZIEGLER JOHN B | Director | SELL | $57.42 | 2,000 | $114,840 | 15,854 | -11.2% |
| 2013-02-23 00:31 | 2013-02-20 | BRITELL JENNE K | Director | OPT+S | $57.30 | 10,000 | $572,957 | 14,452 | 0.0% |
| 2013-02-20 00:50 | 2013-02-19 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | SELL | $57.53 | 1,442 | $82,961 | 41,087 | -3.4% |
| 2013-02-13 01:00 | 2013-02-12 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | SELL | $57.48 | 3,481 | $200,074 | 43,386 | -7.4% |
| 2013-01-19 00:30 | 2013-01-17 | PFEIFFER GARY M | Director | OPT+S | $60.00 | 10,000 | $600,000 | 13,952 | 0.0% |
| 2012-10-05 23:24 | 2012-10-03 | HAGEMANN ROBERT | Officer - SVP & Chief Financial Officer | OPT+S | $64.00 | 46,667 | $2,986,688 | 154,603 | 0.0% |
| 2012-09-07 23:30 | 2012-09-06 | ZIEGLER JOHN B | Director | OPT+S | $62.32 | 10,000 | $623,192 | 17,854 | 0.0% |
| 2012-08-16 23:18 | 2012-08-15 | WILENSKY GAIL R | Director | OPT+S | $59.24 | 20,000 | $1,184,718 | 13,952 | 0.0% |
| 2012-08-14 23:12 | 2012-08-10 | BUEHLER WILLIAM F | Director | OPT+S | $59.31 | 30,000 | $1,779,165 | 24,250 | 0.0% |
| 2012-08-09 23:20 | 2012-08-08 | Doherty Catherine T. | Officer - SVP, Physician Services | OPT+S | $60.11 | 40,000 | $2,404,324 | 66,016 | 0.0% |
| 2012-08-09 23:18 | 2012-08-08 | BALDWIN JOHN C MD | Director | OPT+S | $60.00 | 11,770 | $706,165 | 9,848 | 0.0% |
| 2012-08-07 23:20 | 2012-08-07 | RUSCKOWSKI STEPHEN H | Director, Officer - President and CEO | BUY | $59.34 | 5,000 | $296,677 | 68,034 | +7.9% |
| 2012-08-06 23:09 | 2012-08-03 | ZIEGLER JOHN B | Director | SELL | $59.26 | 2,800 | $165,916 | 17,854 | -13.6% |
| 2012-08-02 23:07 | 2012-07-31 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | OPT+S | $58.66 | 115,259 | $6,760,574 | 48,111 | 0.0% |
| 2012-07-13 23:13 | 2012-07-12 | STANZIONE DANIEL | Director | OPT+S | $62.00 | 30,000 | $1,860,000 | 20,176 | 0.0% |
| 2012-07-03 20:31 | 2012-06-29 | BONGIORNO THOMAS F | Officer - VP and Corporate Controller | OPT+S | $59.54 | 15,000 | $893,100 | 10,973 | 0.0% |
| 2012-07-03 20:28 | 2012-06-29 | ZIEGLER JOHN B | Director | OPT+S | $60.00 | 1,460 | $87,600 | 20,654 | 0.0% |
| 2012-07-03 00:22 | 2012-06-28 | ZIEGLER JOHN B | Director | OPT+S | $59.00 | 20,000 | $1,180,000 | 20,654 | 0.0% |
| 2012-05-31 23:40 | 2012-05-30 | ZIEGLER JOHN B | Director | OPT+S | $58.13 | 864 | $50,224 | 20,654 | 0.0% |
| 2012-05-09 23:40 | 2012-05-08 | RUSCKOWSKI STEPHEN H | Director, Officer - President and CEO | BUY | $56.89 | 20,000 | $1,137,748 | 63,034 | +46.5% |
| 2012-05-09 23:39 | 2012-05-08 | BONGIORNO THOMAS F | Officer - VP and Corporate Controller | SELL | $56.83 | 1 | $57 | 0 | -100.0% |
| 2012-05-04 00:53 | 2012-05-01 | BONGIORNO THOMAS F | Officer - VP and Corporate Controller | SELL | $58.43 | 2,305 | $134,686 | 1 | -100.0% |
| 2012-05-03 23:34 | 2012-05-02 | PFEIFFER GARY M | Director | OPT+S | $58.30 | 10,000 | $583,041 | 11,977 | 0.0% |
| 2012-05-03 23:33 | 2012-05-01 | BALDWIN JOHN C MD | Director | OPT+S | $57.50 | 10,334 | $594,205 | 9,643 | 0.0% |
| 2012-04-03 23:20 | 2012-04-02 | HAGEMANN ROBERT | Officer - SVP & Chief Financial Officer | OPT+S | $62.00 | 46,666 | $2,893,292 | 154,566 | 0.0% |
| 2012-03-03 00:50 | 2012-03-01 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | SELL | $57.40 | 7,207 | $413,656 | 36,621 | -16.4% |
| 2012-02-28 00:14 | 2012-02-24 | Miller Joan Elizabeth | Officer - SVP-Oncology & Neurology Srvcs | OPT+S | $57.45 | 15,561 | $893,979 | 73,373 | 0.0% |
| 2012-02-23 00:15 | 2012-02-21 | BONGIORNO THOMAS F | Officer - VP and Corporate Controller | OPT+S | $57.50 | 7,078 | $406,985 | 14,170 | 0.0% |
| 2012-02-18 00:40 | 2012-02-16 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | SELL | $57.38 | 1,462 | $83,888 | 31,656 | -4.4% |
| 2012-02-17 00:18 | 2012-02-14 | PREVOZNIK MICHAEL E | Officer - SVP & General Counsel | SELL | $57.40 | 4,544 | $260,822 | 33,954 | -11.8% |
How to Interpret $DGX Trades
Not every insider transaction in QUEST DIAGNOSTICS INC is a signal for immediate action. Professional investors look for "cluster buying"—when multiple executives simultaneously purchase $DGX shares on the open market. It is crucial to distinguish between scheduled sales (under Rule 10b5-1) and voluntary increases in ownership, which demonstrate management’s true conviction that the stock is undervalued.
Data Source & Accuracy for DGX
Insider activity data for QUEST DIAGNOSTICS INC is streamed in real-time directly from the SEC EDGAR system. We analyze raw Form 4 filings, filtering out technical adjustments and complex derivative transactions. This provides a transparent view of how ownership structure is evolving in $DGX, allowing you to follow the capital of those with the most intimate knowledge of the company.
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.