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 | 2026-05-11 21:20:34 | 5,005,494 0 | 5,005,494 | Form 13D |
| 3 | Meister Keith A. Corvex Management LP Director 10% Owner | 2026-05-11 21:21:58 | 20,129 4,766,441 | 4,786,570 | Form 4 |
| 4 | 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 |
| 5 | Casdin Capital LLC Casdin Eli Casdin Partners Master Fund L.P. Casdin Partners GP LLC Director 10% Owner | 2026-05-11 20:43:39 | 0 2,150,000 | 2,150,000 | Form 4 |
| 6 | 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 |
| 7 | OPKO HEALTH INC. 10% Owner | 2024-11-20 21:36:13 | 1,370,841 0 | 1,370,841 | Form 13D |
| 8 | Clark Daniel Emmett Former Secretary and GC | 2023-05-04 20:43:01 | 372,432 0 | 372,432 | Form 4 |
| 9 | Ro Isaac Former CFO | 2023-05-31 16:19:39 | 317,840 0 | 317,840 | Form 4 |
| 10 | 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 |
| 11 | Coffin James President and COO | 2021-12-13 19:09:08 | 259,804 0 | 259,804 | Form 4 |
| 12 | Schadt Eric President & Chief R&D Officer | 2022-05-24 20:35:00 | 243,380 0 | 243,380 | Form 4 |
| 13 | Assad Shawn Former CAO | 2023-05-31 16:17:37 | 235,174 0 | 235,174 | Form 4 |
| 14 | RUCH JOSHUA Director | 2025-11-26 16:13:37 | 29,723 120,083 | 149,806 | Form 4 |
| 15 | Ryan Jason Director | 2025-08-27 21:01:50 | 11,904 103,284 | 115,188 | Form 4 |
| 16 | Miao Richard Former Interim CFO | 2023-04-28 17:12:23 | 100,388 0 | 100,388 | Form 4 |
| 17 | Stueland Katherine CHIEF EXECUTIVE OFFICER | 2026-05-01 16:28:12 | 93,216 0 | 93,216 | Form 4 |
| 18 | Saad Kareem CHIEF TRANSFORMATION OFFICER | 2024-03-19 16:14:53 | 90,879 0 | 90,879 | Form 4 |
| 19 | Prentice Anthony Former Chief Product Officer | 2023-05-22 17:03:17 | 81,250 0 | 81,250 | Form 4 |
| 20 | Charney Dennis Director | 2021-10-19 19:17:47 | 70,244 0 | 70,244 | Form 4 |
| 21 | Sherman Rachel E. Director | 2023-05-04 16:15:48 | 58,290 0 | 58,290 | Form 4 |
| 22 | PFENNIGER RICHARD C JR Director | 2025-06-23 17:45:07 | 45,082 0 | 45,082 | Form 4 |
| 23 | Turner Nat Director | 2022-05-12 20:25:23 | 37,836 0 | 37,836 | Form 4 |
| 24 | Feeley Kevin CHIEF FINANCIAL OFFICER | 2026-05-01 16:24:33 | 34,942 0 | 34,942 | Form 4 |
| 25 | Pellini Michael J Director | 2022-10-18 18:37:19 | 25,672 0 | 25,672 | Form 4 |
| 26 | Islam Munib Director | 2020-09-01 15:38:20 | 25,000 0 | 25,000 | Form 3 |
| 27 | Leproust Emily M. Director | 2025-06-23 17:45:55 | 24,852 0 | 24,852 | Form 4 |
| 28 | Dechairo Bryan Chief Operating Officer | 2026-03-05 17:50:55 | 10,430 0 | 10,430 | Form 4 |
| 29 | White Karen Ann Chief People Officer | 2023-07-27 16:12:15 | 5,852 0 | 5,852 | Form 4 |
| 30 | Fuchs Thomas Director | 2025-09-19 16:11:34 | 3,438 0 | 3,438 | Form 4 |
| 31 | George Sean E Director | 2020-09-01 15:47:08 | 0 0 | 0 | Form 3 |
| 32 | Emes Brian CFO and Secretary | 2020-09-01 15:34:08 | 0 0 | 0 | Form 3 |
| 33 | Rodriguez Shaun Chief Strategy Officer | 2020-09-01 15:42:03 | 0 0 | 0 | Form 3 |