Doherty Catherine T. Insider Trades at QUEST DIAGNOSTICS INC

Spot the Money

Doherty Catherine T.

EVP, Regional Businesses at QUEST DIAGNOSTICS INC

Company: QUEST DIAGNOSTICS INC
Ticker: DGX
First filing on record: February 17, 2026
Latest trade on record: March 5, 2026
SEC filings: EDGAR ↗

Doherty Catherine T., EVP, Regional Businesses at QUEST DIAGNOSTICS INC, has disclosed 17 transactions in DGX since February 17, 2026: 0 purchases (0 open-market buys) and 12 sales, worth about $16.7M at the reported prices. The latest was filed March 6, 2026, 1 day after the trade.

Last updated March 6, 2026 · Source: SEC EDGAR Form 4 filings

Transactions

17

Open-market buys

0

Sales

12

Avg. disclosure lag

2.6d

Trading in charts

Trade timeline

When does this person trade, how big, and in which direction? Every trade in the last 12 months.

Bought (above the line)Sold (below the line)Other transaction

In the last 12 months Doherty Catherine T. made no purchases and 12 sales worth $8.5M, plus 5 other transactions. Dot size is the dollar amount.

Portfolio mix

Which stocks does this person trade most? Tile size is dollars traded, all time on record.

Doherty Catherine T. has traded 1 stock on record; the largest by dollars is DGX.

Reporting lag

Does this person report on time? One bar per filing against the Form 4 deadline.

On timeLate

0 of 4 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).

What kind of transactions

Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.

Rows by Form 4 transaction code
Code	Meaning	Rows	Shares	Value
S	Open-market sale	8	33,788	$7.0M
F	Shares withheld for tax	4	7,615	$1.6M
A	Grant or award	3	27,806	$2.3M
M	Option exercise or conversion	2	52,330	$5.9M

Rows by year of the trade
Year	Rows	Bought	Sold
2026	17	0	12 · $8.5M

Transactions

Download DGX trades (CSV)156 rows · 55 KB · every filer in this ticker, this insider included · all downloads

Security	Side	Trade date	Disclosed	Lag	Shares	Price	Value	Flags	Source
DGX	Sell S	March 5, 2026	March 6, 2026	1d	5,558	$206	$1.1M	10b5-1 plan	Form 4 ↗
DGX	Sell F	March 4, 2026	March 6, 2026	2d	5,806	$205	$1.2M	10b5-1 plan	Form 4 ↗
DGX	Other A	March 4, 2026	March 6, 2026	2d	11,364	$205	$2.3M	10b5-1 plan	Form 4 ↗
DGX	Sell S	March 3, 2026	March 4, 2026	1d	632	$208	$131K	10b5-1 plan	Form 4 ↗
DGX	Sell F	March 2, 2026	March 4, 2026	2d	648	$205	$133K	10b5-1 plan	Form 4 ↗
DGX	Other A	February 18, 2026	February 20, 2026	2d	13,514	—	—	10b5-1 plan derivative	Form 4 ↗
DGX	Sell S	February 19, 2026	February 20, 2026	1d	1,433	$205	$294K	10b5-1 plan	Form 4 ↗
DGX	Sell F	February 18, 2026	February 20, 2026	2d	728	$207	$151K	10b5-1 plan	Form 4 ↗
DGX	Sell F	February 18, 2026	February 20, 2026	2d	433	$210	$91K	10b5-1 plan	Form 4 ↗
DGX	Other A	February 18, 2026	February 20, 2026	2d	2,928	—	—	10b5-1 plan	Form 4 ↗
DGX	Option / conversion M	February 13, 2026	February 17, 2026	4d	26,165	$112	$2.9M	10b5-1 plan derivative	Form 4 ↗
DGX	Sell S	February 13, 2026	February 17, 2026	4d	351	$209	$73K	10b5-1 plan	Form 4 ↗
DGX	Sell S	February 13, 2026	February 17, 2026	4d	1,619	$208	$337K	10b5-1 plan	Form 4 ↗
DGX	Sell S	February 13, 2026	February 17, 2026	4d	3,500	$207	$725K	10b5-1 plan	Form 4 ↗
DGX	Sell S	February 13, 2026	February 17, 2026	4d	10,122	$206	$2.1M	10b5-1 plan	Form 4 ↗
DGX	Sell S	February 13, 2026	February 17, 2026	4d	10,573	$205	$2.2M	10b5-1 plan	Form 4 ↗
DGX	Option / conversion M	February 13, 2026	February 17, 2026	4d	26,165	$112	$2.9M	10b5-1 plan	Form 4 ↗

Filings

Filed	Form	Accession	Rows	Status	Source
March 6, 2026	Form 4	0001022079-26-000031	3	published	EDGAR ↗
March 4, 2026	Form 4	0001022079-26-000024	2	published	EDGAR ↗
February 20, 2026	Form 4	0001520897-26-000003	5	published	EDGAR ↗
February 17, 2026	Form 4	0001022079-26-000009	7	published	EDGAR ↗

Other insiders at QUEST DIAGNOSTICS INC

DELANEY MARK E SVP & Chief Commercial Officer 17 rows
Plewman Patrick SVP for Diagnostic Services 17 rows
Davis J. E. CEO and President 16 rows
KUPPUSAMY KARTHIK SVP, Clinical Solutions 16 rows
PREVOZNIK MICHAEL E SVP & General Counsel 16 rows
SAMAD SAM Executive Vice President & CFO 13 rows
Lassiter Wright III Director 11 rows
Deppe Michael J SVP, Corp. Controller & CAO 7 rows
Gregg Vicky B Director 6 rows
CARTER ROBERT B Director 5 rows

Everyone on file, with contracts and lobbying under the company's name: QUEST DIAGNOSTICS INC.

Guides for this page

What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
Rule 10b5-1 trading plans The plan must be set up when the insider has no important non-public information.
Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.

Sources and method

Official sources behind this page
Source	Filings	Rows	First filed	Newest filed	Read the originals
SEC EDGAR, Form 4	4	17	February 17, 2026	March 6, 2026	Form 4 list on EDGAR

Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.

Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.

Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.