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buyModerate cluster of 2

Casdin Capital, LLC bought $21M of WGS

director, owner at GeneDx Holdings Corp.. 500,000 shares at an average of $42.92, traded May 18, 2026, filed May 20, 2026.

Conviction score
59
Value
$21M
500,000 shares
Holdings after
3,507,164
+17% from before
From 52-week low
+24%
low $34.51, close $42.69
From 52-week high
-75%
high $167.51, as of May 18, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $21.5M at market
    +25
  • Relative to holdings
    Holdings up 17%
    +3
  • Price context
    75% below the 52-week high
    +8
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +31.9%, 3m +78.1%, 6m -.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

WGSOct 12, 2026 · close 63.82
Since filing May 20, 2026: +42.7%SPY +5.5% · excess +37.2%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000919574-26-003627, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 18, 2026POpen-market purchase
Class A Common Stock, par value $0.0001 per shareindirect: See footnote
+175,000$42.55$7.4M3,182,164May 20, 2026
May 19, 2026POpen-market purchase
Class A Common Stock, par value $0.0001 per shareindirect: See footnote
+185,000$42.60$7.9M3,367,164May 20, 2026
May 20, 2026POpen-market purchase
Class A Common Stock, par value $0.0001 per shareindirect: See footnote
+140,000$43.81$6.1M3,507,164May 20, 2026

Related signals

Other insiders at GeneDx Holdings Corp. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
30Weak
WGSsell 2
GeneDx Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$364k
3,728 shares
-8%
43Moderate
WGSsell 2
GeneDx Holdings Corp.
Katherine Stueland
CHIEF EXECUTIVE OFFICER
$1.0M
10,501 shares
-8%
25Weak
WGSsell 2
GeneDx Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$108k
1,285 shares
-3%
32Weak
WGSsell 2
GeneDx Holdings Corp.
Katherine Stueland
CHIEF EXECUTIVE OFFICER
$311k
3,692 shares
-3%
20Weak
WGSsell 2
GeneDx Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$31k
372 shares
-1%
28Weak
WGSsell 2
GeneDx Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$227k
3,729 shares
-9%
38Weak
WGSsell 2
GeneDx Holdings Corp.
Katherine Stueland
CHIEF EXECUTIVE OFFICER
$638k
10,501 shares
-9%
23Weak
WGSsell 2
GeneDx Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$68k
1,266 shares
-3%
30Weak
WGSsell 2
GeneDx Holdings Corp.
Katherine Stueland
CHIEF EXECUTIVE OFFICER
$196k
3,639 shares
-4%
56Moderate
WGSbuy
GeneDx Holdings Corp.
Casdin Capital, LLC
director, owner
$11M
200,000 shares
+6%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Casdin Capital, LLC bought $21M of WGS | InsiderTell