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GeneDx Holdings Corp.

WGS
Exchange
Nasdaq
Industry
Services-Health Services
SEC CIK
0001818331

In the last 90 days, GeneDx Holdings Corp. insiders filed 0 open-market purchases and 5 sales; 223 institutions reported holding it in 13F filings for Q2 2026, worth $2.17B in total; ARK Invest is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by GeneDx Holdings Corp. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
5 filings
2 insiders, $1.84M in total
Insiders trading
2
Net value
−$1.84M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for GeneDx Holdings Corp., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for GeneDx Holdings Corp.
NameTitleLast reported holdingLast filingFilings, past year
Stueland KatherineCHIEF EXECUTIVE OFFICER115,476Sep 18, 202615
Feeley KevinCHIEF FINANCIAL OFFICER44,945Sep 18, 202619
Fuchs ThomasDirector1,146Sep 18, 20262
Gardner Mark APresident–Jul 1, 20261
Ruch JoshuaDirector33,299Jun 23, 20262
Pfenniger Richard C JrDirector45,082Jun 23, 20261
Meister Keith A.Director, 10% Owner23,705Jun 23, 20265
Casdin EliDirector, 10% Owner24,093Jun 23, 20264
Ryan JasonDirector15,480Jun 23, 20261
Leproust Emily M.Director24,852Jun 23, 20261
Casdin Partners GP, LLCDirector, 10% Owner3,707,164IndirectJun 8, 20263
Casdin Capital, LLCDirector, 10% Owner3,707,164IndirectJun 8, 20263
Casdin Partners Master Fund, L.P.Director, 10% Owner3,707,164IndirectJun 8, 20263
Corvex Management LPDirector, 10% Owner4,784,570IndirectMay 15, 20264
Dechairo BryanChief Operating Officer0Mar 5, 20263
Mount Sinai Health System, Inc.10% Owner2,719,692Nov 19, 20240
Icahn School Of Medicine At Mount Sinai10% Owner2,719,692Nov 19, 20240
Opko Health, Inc.10% Owner2,646,972Aug 19, 20240
Casdin Partners FO1-MSV, LPDirector3,093,509Jun 5, 20240
Saad KareemCHIEF TRANSFORMATION OFFICER29,517Mar 19, 20240
White Karen AnnChief People Officer4,761Jul 27, 20230
Ro IsaacFormer CFO206,886May 31, 20230
Assad ShawnOther: Former CAO43,040May 31, 20230
Prentice AnthonyOther: Former Chief Product Officer12,608May 22, 20230
Sherman Rachel E.Director58,290May 4, 20230
Clark Daniel EmmettOther: Former Secretary and GC312,345May 4, 20230
Miao RichardOther: Former Interim CFO23,291Apr 28, 20230
Pellini Michael JDirector17,114Oct 18, 20220
Schadt EricPresident & Chief R&D Officer243,380May 24, 20220
Turner NatDirector37,836May 12, 20220
Schwarzman Stephen A10% Owner162,309IndirectMay 3, 20220
Blackstone Inc.10% Owner162,309IndirectMay 3, 20220
Blackstone Group Management L.L.C.10% Owner162,309IndirectMay 3, 20220
Blackstone Holdings I L.P.10% Owner162,309IndirectMay 3, 20220
Blackstone Holdings I/II GP L.L.C.10% Owner162,309IndirectMay 3, 20220
Blackstone Holdings II L.P.10% Owner162,309IndirectMay 3, 20220
Blackstone Alternative Solutions L.L.C.10% Owner162,309IndirectMay 3, 20220
Bto De GP - NQ L.L.C.10% Owner162,309IndirectMay 3, 20220
Blackstone Tactical Opportunities Associates III - NQ L.P.10% Owner162,309IndirectMay 3, 20220
Blackstone Aqua Master Sub-Fund, a sub-fund of Blackstone Global Master Fund ICAV10% Owner162,309IndirectMay 3, 20220
Blackstone Holdings III L.P.10% Owner162,309IndirectMay 3, 20220
Blackstone Holdings III GP L.P.10% Owner162,309IndirectMay 3, 20220
Blackstone Holdings III GP Management L.L.C.10% Owner162,309IndirectMay 3, 20220
Btoa L.L.C.10% Owner162,309IndirectMay 3, 20220
Blackstone Tactical Opportunities Associates L.L.C.10% Owner162,309IndirectMay 3, 20220
BTO Holdings Manager L.L.C.10% Owner162,309IndirectMay 3, 20220
BTO Side-by-Side GP L.L.C.10% Owner162,309IndirectMay 3, 20220
Blackstone Family Tactical Opportunities Investment Partnership III ESC L.P.10% Owner162,309IndirectMay 3, 20220
Blackstone Tactical Opportunities Fund - FD L.P.10% Owner162,309IndirectMay 3, 20220
BTO Sema4 Holdings L.P.10% Owner162,309IndirectMay 3, 20220

Showing the 50 most recent filers.

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Sep 18, 2026 (view filing)4:43 PM ETSep 162 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−10.5K$97.61−$1.03M−8.3%115.5K after5 lots
Sep 18, 2026 (view filing)4:39 PM ETSep 162 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−3.73K$97.61−$363.9K−7.7%44.9K after5 lots
Sep 11, 2026 (view filing)4:13 PM ETSep 92 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−3.69K$84.22−$310.9K−3.3%107.2K after
Sep 11, 2026 (view filing)4:10 PM ETSep 92 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−1.28K$84.22−$108.2K−3.0%41.5K after
Sep 3, 2026 (view filing)4:09 PM ETSep 12 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−372$83.84−$31.2K−0.9%40.3K after
Jun 18, 2026 (view filing)Jun 162 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−3.73K$60.76−$226.6K−8.5%40.0K after3 lots
Jun 18, 2026 (view filing)Jun 162 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−10.5K$60.76−$638.1K−9.1%104.4K after3 lots
Jun 11, 2026 (view filing)Jun 92 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−1.27K$53.77−$68.1K−3.4%36.5K after
Jun 11, 2026 (view filing)Jun 92 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−3.64K$53.77−$195.7K−3.6%96.1K after
Jun 8, 2026 (view filing)5:25 PM ETJun 4-54 daysCasdin Partners GP, LLC and 3 othersDirector, 10% OwnerPPurchaseClass A Common Stock, par value $0.0001 per share+200.0K$55.55+$11.1M+5.7%3.71M after2 lots
Jun 3, 2026 (view filing)Jun 12 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−369$51.74−$19.1K−1.0%35.3K after
May 20, 2026 (view filing)7:45 PM ETMay 18-202 daysCasdin Partners GP, LLC and 3 othersDirector, 10% OwnerPPurchaseClass A Common Stock, par value $0.0001 per share+500.0K$42.92+$21.5M+16.6%3.51M after3 lots
May 15, 2026 (view filing)7:07 PM ETMay 13-152 daysMeister Keith A. and 1 otherDirector, 10% OwnerPPurchaseClass A Common Stock+351.3K$39.19+$13.8M+7.9%4.78M after6 lots
May 11, 2026 (view filing)9:21 PM ETMay 7-114 daysMeister Keith A. and 1 otherDirector, 10% OwnerPPurchaseClass A Common Stock+1.21M$38.84+$46.8M+37.3%4.43M after13 lots
May 11, 2026 (view filing)8:43 PM ETMay 7-114 daysCasdin Partners GP, LLC and 3 othersDirector, 10% OwnerPPurchaseClass A Common Stock+850.0K–––850.0K afterDerivative3 lots
May 1, 2026 (view filing)Apr 292 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−392$65.19−$25.6K−1.1%34.9K after
May 1, 2026 (view filing)Apr 292 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−2.17K$65.19−$141.6K−2.3%93.2K after2 lots
Mar 30, 2026 (view filing)Mar 264 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−8.82K$63.17−$557.0K−20.3%34.6K after5 lots
Mar 30, 2026 (view filing)Mar 264 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−46.9K$63.17−$2.96M−33.9%91.5K after5 lots
Mar 17, 2026 (view filing)Mar 161 dayFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−5.71K$76.80−$438.2K−17.4%27.1K after3 lots
Mar 17, 2026 (view filing)Mar 161 dayStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−17.2K$76.80−$1.32M−22.7%58.4K after3 lots
Mar 11, 2026 (view filing)Mar 92 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−1.28K$86.75−$111.0K−5.5%21.8K after
Mar 11, 2026 (view filing)Mar 92 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−3.68K$86.75−$319.1K−7.6%45.0K after
Mar 5, 2026 (view filing)7:19 PM ETMar 3-52 daysMeister Keith A. and 1 otherDirector, 10% OwnerPPurchaseClass A Common Stock+169.5K$79.40+$13.5M+5.5%3.23M after10 lots
Mar 5, 2026 (view filing)Mar 41 dayFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−6.19K$78.61−$486.4K−24.9%18.7K after3 lots
Mar 5, 2026 (view filing)Mar 41 dayStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−25.5K$78.61−$2.00M−39.7%38.7K after3 lots
Mar 3, 2026 (view filing)Mar 21 dayFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−287$77.52−$22.2K−2.9%9.60K after
Feb 6, 2026 (view filing)Feb 42 daysDechairo BryanChief Operating OfficerSSaleClass A Common Stock−5.96K$85.70−$510.9K−100.0%0 after8 lots10b5-1
Feb 3, 2026 (view filing)Feb 21 dayDechairo BryanChief Operating OfficerSSaleClass A Common Stock−3.41K$99.53−$339.7K−36.4%5.96K after4 lots
Feb 2, 2026 (view filing)Jan 294 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−317$93.99−$29.8K−3.3%9.17K after2 lots
Feb 2, 2026 (view filing)Jan 294 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−1.65K$94.00−$155.4K−9.1%16.5K after
Dec 18, 2025 (view filing)Dec 162 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−3.85K$143.87−$554.6K−30.6%8.73K after11 lots
Dec 18, 2025 (view filing)Dec 162 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−10.9K$143.89−$1.56M−43.3%14.2K after11 lots
Dec 11, 2025 (view filing)Dec 92 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−1.27K$159.28−$201.6K−19.0%5.39K after
Dec 11, 2025 (view filing)Dec 92 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−3.64K$159.28−$579.6K−36.5%6.34K after
Dec 3, 2025 (view filing)Dec 12 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−377$162.54−$61.3K−8.2%4.19K after
Nov 26, 2025 (view filing)Nov 242 daysRuch JoshuaDirectorSSaleClass A Common Stock−38.0K$160.37−$6.09M−24.0%120.1K after15 lots
Oct 31, 2025 (view filing)Oct 292 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−388$136.54−$53.0K−9.4%3.76K after
Oct 31, 2025 (view filing)Oct 292 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−2.16K$136.54−$294.7K−38.6%3.44K after2 lots
Oct 1, 2025 (view filing)Sep 301 dayFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−6.61K$108.38−$716.3K−66.1%3.39K after7 lots10b5-1
Oct 1, 2025 (view filing)Sep 301 dayStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−12.9K$108.17−$1.39M−88.2%1.72K after8 lots10b5-1
Sep 18, 2025 (view filing)Sep 162 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−3.73K$121.47−$452.8K−29.9%8.76K afterFrom original
Sep 18, 2025 (view filing)Sep 162 daysStueland KatherineCHIEF EXECUTIVE OFFICERSSaleClass A Common Stock−10.5K$121.47−$1.28M−41.9%14.6K after
Sep 11, 2025 (view filing)Sep 92 daysStueland KatherineChief Executive OfficerSSaleClass A Common Stock−3.66K$128.06−$468.3K−36.6%6.33K after2 lots
Sep 11, 2025 (view filing)Sep 92 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−1.27K$128.05−$162.9K−19.4%5.29K after2 lots
Sep 3, 2025 (view filing)Sep 21 dayFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−378$125.81−$47.6K−8.4%4.10K after
Aug 27, 2025 (view filing)Aug 27Same dayRyan JasonDirectorSSaleClass A Common Stock−38.1K$127.30−$4.85M−26.9%103.3K after6 lots
Aug 27, 2025 (view filing)Aug 27Same dayRyan JasonDirectorSSaleClass A Common Stock−1.15K$129.65−$149.1K−8.8%11.9K after
Aug 22, 2025 (view filing)6:55 PM ETAug 22Same dayCasdin Partners GP, LLC and 3 othersDirector, 10% OwnerSSaleClass A Common Stock−500.0K$120.90−$60.5M−14.3%3.01M after
Jul 31, 2025 (view filing)Jul 292 daysFeeley KevinCHIEF FINANCIAL OFFICERSSaleClass A Common Stock−388$105.31−$40.9K−9.4%3.76K after