Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-12215 Quest Diagnostics Incorporated Delaware 16-1387862 (State of Incorporation) (I.R.S. Employer Identificatio ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2021 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission File Number 001-12215 Quest Diagnostics Incorporated 500 Plaza Drive Secaucus, NJ 07094 (973) 520-2700 Delaware 16-1387862 ...

Quest Diagnostics Incorporated (NYSE:DGX) Q4 2021 Earnings Conference Call February 3, 2022 8:30 AM ET Company Participants Shawn Bevec - VP of IR Steve Rusckowski - Chairman, CEO and President James E. Davis - EVP, General Diagnostics and CEO-Elect Mark Guinan - CFO Conference Call Participants Jack Meehan - Nephron Research Ann Hynes - Mizuho Securities A.J. Rice - Credit Suisse Patrick Donnelly - Citi Ricky Goldwasser - Morgan Stanley Brian Tanquilut - Jefferies Pito Chickering - Deutsche Bank Matt Lare ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-12215 Quest Diagnostics Incorporated Delaware 16-1387862 (State of Incorporation) (I.R.S. Employer Identific ...

Quest Diagnostics Incorporated (NYSE:DGX) Q3 2021 Earnings Conference Call October 21, 2021 8:30 AM ET Company Participants Shawn Bevec - Vice President of Investor Relations Steve Rusckowski - Chairman, Chief Executive Officer and President Mark Guinan - Chief Financial Officer Conference Call Participants Kevin Caliendo - UBS Brian Tanquilut - Jefferies Ricky Goldwasser - Morgan Stanley Jack Meehan - Nephron Research A.J. Rice - Credit Suisse Ann Hynes - Mizuho Securities Ralph Giacobbe - Citi Matt Larew ...

Quest Diagnostics Incorporated (NYSE:DGX) Q2 2021 Earnings Conference Call July 22, 2021 8:30 AM ET Company Participants Shawn Bevec - Vice President of Investor Relations Steve Rusckowski - Chairman, Chief Executive Officer and President Mark Guinan - Chief Financial Officer Conference Call Participants Ann Hynes - Mizuho Securities Brian Tanquilut - Jefferies Jack Meehan - Nephron Research Ricky Goldwasser - Morgan Stanley Ralph Giacobbe - Citi Pito Chickering - Deutsche Bank Tim Daley - Wells Fargo Derri ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-12215 Quest Diagnostics Incorporated Delaware 16-1387862 (State of Incorporation) (I.R.S. Employer Identification ...

Quest Diagnostics Incorporated (NYSE:DGX) Q1 2021 Earnings Conference Call April 22, 2021 8:30 AM ET Company Participants Shawn Bevec - Vice President of Investor Relations Steve Rusckowski - Chairman, Chief Executive Officer & President Mark Guinan - Chief Financial Officer Conference Call Participants Kevin Caliendo - UBS Erin Wright - Credit Suisse Pito Chickering - Deutsche Bank Ralph Giacobbe - Citi Brian Tanquilut - Jefferies Jack Meehan - Nephron Research Matt Larew - William Blair Ricky Goldwasser - ...

Table of Contents Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, $0.01 Par Value DGX New York Stock Exchange UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to C ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2020 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission File Number 001-12215 Quest Diagnostics Incorporated Delaware 16-1387862 (State of Incorporation) (I.R.S. Employer Identif ...