List of insiders holdings for GeneDx Holdings Corp.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | BTO Sema4 Holdings L.P. BTO Holdings Manager L.L.C. Blackstone Tactical Opportunities Associates L.L.C. BTOA L.L.C. Blackstone Family Tactical Opportunities Investment Partnership III ESC L.P. BTO Side-by-Side GP L.L.C. Blackstone Holdings III L.P. Blackstone Holdings III GP L.P. Blackstone Holdings III GP Management L.L.C. Blackstone Tactical Opportunities Fund - FD L.P. 10% Owner | 2023-02-03 14:56:01 | 27,802,368 0 | 27,802,368 | Form 13D |
| 2 | CMLS Holdings LLC C-LSH LLC M-LSH LLC Casdin Eli Meister Keith A. 10% Owner | 2026-05-22 17:20:24 | 5,356,767 0 | 5,356,767 | Form 13D |
| 3 | Meister Keith A. Director 10% Owner | 2026-06-23 16:28:25 | 27,953 5,117,714 | 5,145,667 | Form 4 |
| 4 | Meister Keith A. Corvex Management LP Director 10% Owner | 2026-05-15 19:07:09 | 20,129 5,117,714 | 5,137,843 | Form 4 |
| 5 | Casdin Eli Director 10% Owner | 2026-06-23 16:25:27 | 28,341 4,059,555 | 4,087,896 | Form 4 |
| 6 | Casdin Capital LLC Casdin Eli Casdin Partners Master Fund L.P. Casdin Partners GP LLC Director 10% Owner | 2026-06-08 17:25:13 | 20,517 4,059,555 | 4,080,072 | Form 4 |
| 7 | Casdin Capital LLC Casdin Eli Casdin Partners Master Fund L.P. Casdin Partners GP LLC Casdin Partners FO1-MSV LP Director 10% Owner | 2024-06-05 20:45:06 | 3,096,651 766,046 | 3,862,697 | Form 4 |
| 8 | ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI MOUNT SINAI HEALTH SYSTEM INC. 10% Owner | 2025-02-21 16:30:14 | 1,373,569 0 | 1,373,569 | Form 13D |
| 9 | OPKO HEALTH INC. 10% Owner | 2024-11-20 21:36:13 | 1,370,841 0 | 1,370,841 | Form 13D |
| 10 | Clark Daniel Emmett Former Secretary and GC | 2023-05-04 20:43:01 | 372,432 0 | 372,432 | Form 4 |
| 11 | Ro Isaac Former CFO | 2023-05-31 16:19:39 | 317,840 0 | 317,840 | Form 4 |
| 12 | Blackstone Tactical Opportunities Associates III - NQ L.P. BTO DE GP - NQ L.L.C. Blackstone Holdings II L.P. Blackstone Aqua Master Sub-Fund a sub-fund of Blackstone Global Master Fund ICAV Blackstone Alternative Solutions L.L.C. Blackstone Holdings I L.P. Blackstone Holdings I/II GP L.L.C. Blackstone Inc. Blackstone Group Management L.L.C. SCHWARZMAN STEPHEN A 10% Owner | 2022-05-03 20:28:54 | 0 262,309 | 262,309 | Form 4 |
| 13 | Coffin James President and COO | 2021-12-13 19:09:08 | 259,804 0 | 259,804 | Form 4 |
| 14 | Schadt Eric President & Chief R&D Officer | 2022-05-24 20:35:00 | 243,380 0 | 243,380 | Form 4 |
| 15 | Assad Shawn Former CAO | 2023-05-31 16:17:37 | 235,174 0 | 235,174 | Form 4 |
| 16 | RUCH JOSHUA Director | 2026-06-23 16:30:25 | 37,547 156,267 | 193,814 | Form 4 |
| 17 | Stueland Katherine CHIEF EXECUTIVE OFFICER | 2026-09-18 16:43:16 | 152,976 0 | 152,976 | Form 4 |
| 18 | Ryan Jason Director | 2026-06-23 16:31:21 | 15,480 103,284 | 118,764 | Form 4 |
| 19 | Miao Richard Former Interim CFO | 2023-04-28 17:12:23 | 100,388 0 | 100,388 | Form 4 |
| 20 | Saad Kareem CHIEF TRANSFORMATION OFFICER | 2024-03-19 16:14:53 | 90,879 0 | 90,879 | Form 4 |
| 21 | Prentice Anthony Former Chief Product Officer | 2023-05-22 17:03:17 | 81,250 0 | 81,250 | Form 4 |
| 22 | Charney Dennis Director | 2021-10-19 19:17:47 | 70,244 0 | 70,244 | Form 4 |
| 23 | Feeley Kevin CHIEF FINANCIAL OFFICER | 2026-09-18 16:39:13 | 59,338 0 | 59,338 | Form 4 |
| 24 | Sherman Rachel E. Director | 2023-05-04 16:15:48 | 58,290 0 | 58,290 | Form 4 |
| 25 | PFENNIGER RICHARD C JR Director | 2026-06-23 16:29:24 | 49,330 0 | 49,330 | Form 4 |
| 26 | Turner Nat Director | 2022-05-12 20:25:23 | 37,836 0 | 37,836 | Form 4 |
| 27 | GARDNER MARK A President | 2026-07-01 16:10:46 | 35,441 0 | 35,441 | Form 4 |
| 28 | Leproust Emily M. Director | 2026-06-23 16:27:30 | 29,100 0 | 29,100 | Form 4 |
| 29 | Pellini Michael J Director | 2022-10-18 18:37:19 | 25,672 0 | 25,672 | Form 4 |
| 30 | Islam Munib Director | 2020-09-01 15:38:20 | 25,000 0 | 25,000 | Form 3 |
| 31 | Dechairo Bryan Chief Operating Officer | 2026-03-05 17:50:55 | 10,430 0 | 10,430 | Form 4 |
| 32 | White Karen Ann Chief People Officer | 2023-07-27 16:12:15 | 5,852 0 | 5,852 | Form 4 |
| 33 | Fuchs Thomas Director | 2026-09-18 16:37:31 | 3,438 0 | 3,438 | Form 4 |
| 34 | George Sean E Director | 2020-09-01 15:47:08 | 0 0 | 0 | Form 3 |
| 35 | Rodriguez Shaun Chief Strategy Officer | 2020-09-01 15:42:03 | 0 0 | 0 | Form 3 |
| 36 | Emes Brian CFO and Secretary | 2020-09-01 15:34:08 | 0 0 | 0 | Form 3 |