| VIKING GLOBAL PERFORMANCE LLC | | 31.0M | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| VIKING GLOBAL INVESTORS LP | | 30.0M | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| David E. Goel | | 12.3M | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Chad M Robins | CEO and Chairman | 2.2M | — | -121K | -408K | -250K | — | — | -373K | — | — | — | +306K | — | — | — | +355K | — |
| Harlan S Robins | Chief Scientific Officer | 1.2M | -386K | -116K | +290K | -47K | — | -68K | +257K | — | — | — | +355K | — | — | — | +355K | — |
| Tycho Peterson | Chief Financial Officer | 532K | — | — | — | — | — | — | — | — | — | — | +132K | — | — | -243K | +296K | — |
| Susan Bobulsky | Chief Commercial Officer, MRD | 406K | -487 | -21K | +81K | — | — | — | +274K | — | — | — | +320K | — | — | — | — | — |
| Julie Rubinstein | President and COO | 397K | — | -367K | -501K | — | — | — | +115K | — | — | — | +136K | — | — | — | +310K | — |
| Sharon Benzeno | Chief Commercial Ofc Imm Med | 376K | — | -166K | -24K | -619K | — | — | +230K | — | — | — | +303K | — | — | — | +321K | — |
| Francis Lo | Chief People Officer | 276K | -96K | -62K | -107K | -115K | — | — | +229K | — | — | — | +235K | — | — | — | +207K | — |
| Kyle Piskel | Chief Financial Officer | 257K | — | -3K | +37K | -163K | — | +6K | +115K | -248 | — | +31K | +36K | -259 | — | — | +40K | -1K |
| Peter M Neupert | — | 240K | — | — | +16K | — | — | — | +29K | — | — | — | +79K | — | — | — | +38K | — |
| Nitin Sood | Chief Commercial Officer, MRD | 215K | — | — | — | — | — | — | — | — | — | — | — | — | -16K | — | +316K | -31K |
| Mark R Adams | Chief Operating Officer | 175K | — | — | — | — | — | — | — | — | — | — | — | — | — | -3K | +195K | -3K |
| Charles Sang | SVP, External Affairs | 155K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Stacy L Taylor | SVP and General Counsel | 139K | — | — | — | — | — | — | — | — | -27K | — | +87K | — | — | — | +195K | — |
| Jyoti Palaniappan | SVP, Diagnostics, T-Detect | 104K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Katey Einterz Owen | — | 88K | — | — | +16K | — | — | — | +39K | — | — | — | +79K | — | — | — | +38K | — |
| Chad M Cohen | Chief Financial Officer | 80K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Henning Thorsen | SVP, Commercial Operations | 73K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Michael J Pellini | — | 70K | — | — | — | — | — | — | +39K | — | — | — | +79K | — | — | — | +38K | — |
| Michelle Renee Griffin | — | 68K | — | -52K | -48K | — | — | — | -13K | — | — | — | +79K | — | — | — | +36K | — |
| Robert Hershberg | — | 62K | — | — | +16K | -23K | — | — | -14K | — | — | — | +79K | — | — | — | +38K | — |
| Nancy Louise Hill | EVP, Operations & Program Mana | 35K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Leslie Trigg | — | 26K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | +38K | — |
| Kevin T Conroy | — | 23K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | +38K | — |
| Lance Baldo | Chief Medical Officer | 17K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Andris A Zoltners | — | 9K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Eric Dobmeier | — | 4K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |