Skip to content
buyNotable cluster of 2

Keith A. Meister bought $47M of WGS

director, owner at Sema4 Holdings Corp.. 1,205,147 shares at an average of $38.84, traded May 7, 2026, filed May 11, 2026.

Conviction score
67
Value
$47M
1,205,147 shares
Holdings after
4,433,297
+37% from before
From 52-week low
+17%
low $34.51, close $40.50
From 52-week high
-76%
high $167.51, as of May 7, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $46.8M at market
    +25
  • Relative to holdings
    Holdings up 37%
    +6
  • Price context
    76% below the 52-week high
    +8
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    2 buys in 90 days
    +5
  • 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 +37.1%, 3m +96.6%, 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 11, 2026: +61.1%SPY +5.8% · excess +55.4%

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 0001011438-26-000276, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 7, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+128,181$35.46$4.5M3,356,331May 11, 2026
May 7, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+14,786$36.33$537k3,371,117May 11, 2026
May 7, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+123,393$37.60$4.6M3,494,510May 11, 2026
May 7, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+116,412$38.46$4.5M3,610,922May 11, 2026
May 7, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+94,356$39.39$3.7M3,705,278May 11, 2026
May 7, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+56,630$40.46$2.3M3,761,908May 11, 2026
May 8, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+15,745$38.00$598k3,777,653May 11, 2026
May 8, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+3,396$38.70$131k3,781,049May 11, 2026
May 8, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+79,144$40.67$3.2M3,860,193May 11, 2026
May 8, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+73,104$41.15$3.0M3,933,297May 11, 2026
May 11, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+246,734$38.91$9.6M4,180,031May 11, 2026
May 11, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+252,734$39.65$10M4,432,765May 11, 2026
May 11, 2026POpen-market purchase
Class A Common Stockindirect: See footnotes
+532$40.35$21k4,433,297May 11, 2026

Related signals

Other insiders at Sema4 Holdings Corp. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
30Weak
WGSsell 2
Sema4 Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$364k
3,728 shares
-8%
43Moderate
WGSsell 2
Sema4 Holdings Corp.
Katherine Stueland
CHIEF EXECUTIVE OFFICER
$1.0M
10,501 shares
-8%
25Weak
WGSsell 2
Sema4 Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$108k
1,285 shares
-3%
32Weak
WGSsell 2
Sema4 Holdings Corp.
Katherine Stueland
CHIEF EXECUTIVE OFFICER
$311k
3,692 shares
-3%
20Weak
WGSsell 2
Sema4 Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$31k
372 shares
-1%
28Weak
WGSsell 2
Sema4 Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$227k
3,729 shares
-9%
38Weak
WGSsell 2
Sema4 Holdings Corp.
Katherine Stueland
CHIEF EXECUTIVE OFFICER
$638k
10,501 shares
-9%
23Weak
WGSsell 2
Sema4 Holdings Corp.
Kevin Feeley
CHIEF FINANCIAL OFFICER
$68k
1,266 shares
-3%
30Weak
WGSsell 2
Sema4 Holdings Corp.
Katherine Stueland
CHIEF EXECUTIVE OFFICER
$196k
3,639 shares
-4%
56Moderate
WGSbuy
Sema4 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.

Keith A. Meister bought $47M of WGS | InsiderTell