Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

GeneDx Holdings Corp.

WGS · Nasdaq · CIK 0001818331 · Healthcare · Diagnostics & Research

INSIDER SIGNAL

69.3 / 100

2 buyers · 24 purchase transaction lines · $93.1M gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeStrong
RoleStrong
RecencyLow
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+14.0 / 35
Purchase size+24.6 / 25
Role+20.0 / 20
Recency+1.1 / 10
Conviction+9.7 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 2 insider(s), not 4+
  • ⚠ Purchase activity is becoming less recent
  • ✓ Role scores high · most senior buyer: Director,TenPercentOwner

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Feeley KevinCHIEF FINANCIAL OFFICER
○▼○▼○▼○▼○▼○▼○▼
Stueland KatherineCHIEF EXECUTIVE OFFICER
○▼○▼○▼○▼○▼
Corvex Management LP; Meister Keith A.Director,TenPercentOwner
●●●●●●
Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Director,TenPercentOwner
●●●●●
Ryan JasonDirector
○
RUCH JOSHUADirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 5 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION65%Largest buyer: Corvex Management LP; Meister Keith A. · $60.6M
CLUSTER BUYING · 15D2 insidersPeak activity: 2026-05-07–2026-05-20

Roles in the peak window: Director,TenPercentOwner. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

69.3 / 100

Latest recorded score

→ +0.0 ptsversus the previous recorded snapshot
  1. 69.4
  2. 69.3
  3. 69.3
  4. 69.3
  5. 69.3

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

34Purchases
108Sales
42Other Form 4 lines
47SEC filings · 365 days
BUYING24 qualifying P line(s) · 180 days
SELLING25 sale line(s) · context only
OTHER19 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-19.8%
3M
+5.5%
6M
+12.9%
12M
-45.1%

Volatility & liquidity

Volatility
98.8%
Beta
—
Avg daily value
USD 49.2M

Valuation

Market cap
USD 2.0B
P/E
—

Fundamentals

Profit margin
-4.9%
ROE
-6.8%
Industry
Diagnostics & Research

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-07-27 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
5,626,310
Previous report
5,884,765
Avg daily volume
945,488
Days to cover
6.0

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-06-05Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Class A Common Stock, par value $0.0001 per share50,000USD 52.86USD 2,643,000SEC filing ↗
2026-06-04Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Class A Common Stock, par value $0.0001 per share150,000USD 56.44USD 8,466,000SEC filing ↗
2026-05-20Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Class A Common Stock, par value $0.0001 per share140,000USD 43.81USD 6,133,400SEC filing ↗
2026-05-19Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Class A Common Stock, par value $0.0001 per share185,000USD 42.60USD 7,881,000SEC filing ↗
2026-05-18Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Class A Common Stock, par value $0.0001 per share175,000USD 42.55USD 7,446,250SEC filing ↗
2026-05-15Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock46,273USD 38.91USD 1,800,571SEC filing ↗
2026-05-14Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock140,000USD 39.39USD 5,514,790SEC filing ↗
2026-05-13Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock165,000USD 39.09USD 6,449,983SEC filing ↗
2026-05-11Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock500,000USD 39.29USD 19,642,789SEC filing ↗
2026-05-08Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock171,389USD 40.59USD 6,956,751SEC filing ↗
2026-05-07Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock533,758USD 37.86USD 20,207,189SEC filing ↗
2026-03-05Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock140,026USD 81.19USD 11,369,152SEC filing ↗
2026-03-03Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock29,495USD 70.89USD 2,090,937SEC filing ↗
2025-05-14Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock50,000USD 60.16USD 3,007,997SEC filing ↗
2025-05-08Corvex Management LP; Meister Keith A.Purchase (P)Class A Common Stock100,000USD 56.01USD 5,600,994SEC filing ↗

Form 4 evidence

184 transaction lines in the latest 365-day window; 737 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-17Fuchs ThomasOption exercise / conversion (M)Class A Common Stock1,146USD 0.00USD 0SEC filing ↗
2026-09-16Stueland KatherineSale (S)Class A Common Stock10,501USD 97.61USD 1,025,031SEC filing ↗
2026-09-16Stueland KatherineOption exercise / conversion (M)Class A Common Stock18,750USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-17Fuchs ThomasOption exercise / conversion (M)Class A Common Stock1,146USD 0.00USD 0SEC filing ↗
2026-09-16Stueland KatherineSale (S)Class A Common Stock10,501USD 97.61USD 1,025,031SEC filing ↗
2026-09-16Stueland KatherineOption exercise / conversion (M)Class A Common Stock18,750USD 0.00USD 0SEC filing ↗
2026-09-16Feeley KevinSale (S)Class A Common Stock3,728USD 97.61USD 363,898SEC filing ↗
2026-09-16Feeley KevinOption exercise / conversion (M)Class A Common Stock7,197USD 0.00USD 0SEC filing ↗
2026-09-09Stueland KatherineSale (S)Class A Common Stock3,692USD 84.22USD 310,940SEC filing ↗
2026-09-09Stueland KatherineOption exercise / conversion (M)Class A Common Stock6,547USD 0.00USD 0SEC filing ↗
2026-09-09Feeley KevinSale (S)Class A Common Stock1,285USD 84.22USD 108,223SEC filing ↗
2026-09-09Feeley KevinOption exercise / conversion (M)Class A Common Stock2,462USD 0.00USD 0SEC filing ↗
2026-09-01Feeley KevinSale (S)Class A Common Stock372USD 83.84USD 31,188SEC filing ↗
2026-09-01Feeley KevinOption exercise / conversion (M)Class A Common Stock717USD 0.00USD 0SEC filing ↗
2026-06-18Ryan JasonOption exercise / conversion (M)Class A Common Stock3,576USD 0.00USD 0SEC filing ↗
2026-06-18RUCH JOSHUAOption exercise / conversion (M)Class A Common Stock3,576USD 0.00USD 0SEC filing ↗
2026-06-18PFENNIGER RICHARD C JROption exercise / conversion (M)Class A Common Stock3,576USD 0.00USD 0SEC filing ↗
2026-06-18Meister Keith A.Option exercise / conversion (M)Class A Common Stock3,576USD 0.00USD 0SEC filing ↗
2026-06-18Leproust Emily M.Option exercise / conversion (M)Class A Common Stock3,576USD 0.00USD 0SEC filing ↗
2026-06-18Casdin EliOption exercise / conversion (M)Class A Common Stock3,576USD 0.00USD 0SEC filing ↗
2026-06-16Stueland KatherineSale (S)Class A Common Stock10,501USD 60.76USD 638,092SEC filing ↗
2026-06-16Stueland KatherineOption exercise / conversion (M)Class A Common Stock18,750USD 0.00USD 0SEC filing ↗
2026-06-16Feeley KevinSale (S)Class A Common Stock3,729USD 60.76USD 226,592SEC filing ↗
2026-06-16Feeley KevinOption exercise / conversion (M)Class A Common Stock7,197USD 0.00USD 0SEC filing ↗
2026-06-09Stueland KatherineSale (S)Class A Common Stock3,639USD 53.77USD 195,669SEC filing ↗
2026-06-09Stueland KatherineOption exercise / conversion (M)Class A Common Stock6,546USD 0.00USD 0SEC filing ↗
2026-06-09Feeley KevinSale (S)Class A Common Stock1,266USD 53.77USD 68,073SEC filing ↗
2026-06-09Feeley KevinOption exercise / conversion (M)Class A Common Stock2,462USD 0.00USD 0SEC filing ↗
2026-06-05Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Class A Common Stock, par value $0.0001 per share50,000USD 52.86USD 2,643,000SEC filing ↗
2026-06-04Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Class A Common Stock, par value $0.0001 per share150,000USD 56.44USD 8,466,000SEC filing ↗
2026-06-01Feeley KevinSale (S)Class A Common Stock369USD 51.74USD 19,092SEC filing ↗
2026-06-01Feeley KevinOption exercise / conversion (M)Class A Common Stock717USD 0.00USD 0SEC filing ↗
2026-05-20Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Class A Common Stock, par value $0.0001 per share140,000USD 43.81USD 6,133,400SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerWGS
CIK0001818331
SectorHealthcare
IndustryDiagnostics & Research Yahoo Finance
SEC SIC8000 Services-Health Services
ExchangeNasdaq

Data coverage

Local Form 4 history737 transaction lines from 2021-07-22 to 2026-09-17
68 P purchase lines · 395 S sale lines · 274 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.