Skip to content

Insider · CIK 0001143422

Gregory L Summe

director

Files at NXPI (NXP Semiconductors N.V.), GRAL (GRAIL, Inc.), AVTR (Avantor, Inc.), UP (Wheels Up Experience Inc.). First filing Apr 29, 2025, latest Feb 12, 2026.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
7 / 0
$4.6M bought, $0 sold

Where the trades landed

Last year at the company this insider has traded most, with each buy and sell on the bar it happened.

AVTR: Avantor, Inc.

AVTROct 9, 2026 · close 15.67

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

This insider’s open-market buys and sells, scored.

ScoreCompanyValueHoldingsPrice contextFiled
71Notable
AVTRbuy 2
Avantor, Inc.
$940k
100,000 shares
+33%0% from low-50% from high
73Notable
AVTRbuy
Avantor, Inc.
$1.1M
100,000 shares
+50%0% from low-52% from high
63Notable
AVTRbuy
Avantor, Inc.
$1.3M
100,000 shares
+100%+12% from low-55% from high
60Notable
AVTRbuy
Avantor, Inc.
$375k
30,000 shares
+43%+6% from low-54% from high
57Moderate
AVTRbuy
Avantor, Inc.
$253k
20,000 shares
+40%+8% from low-54% from high
77Notable
AVTRbuy 4
Avantor, Inc.
$300k
25,000 shares
+100%0% from low-57% from high
70Notable
AVTRbuy 4
Avantor, Inc.
$313k
25,000 shares
-0% from low-55% from high

Transactions

Every row this insider has filed, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Feb 12, 2026AVTR
Avantor, Inc.
POpen-market purchase
Common Stockindirect: By a Trust
+100,000$9.40$940k400,000Feb 12, 2026
Oct 30, 2025AVTR
Avantor, Inc.
POpen-market purchase
Common Stockindirect: By a Trust
+100,000$11.25$1.1M300,000Oct 31, 2025
Oct 15, 2025GRAL
GRAIL, Inc.
AGrant or award
Common Stock
+425$75.52$32k38,794Oct 16, 2025
Aug 21, 2025AVTR
Avantor, Inc.
POpen-market purchase
Common Stockindirect: By a Trust
+100,000$12.56$1.3M200,000Aug 22, 2025
Jul 15, 2025GRAL
GRAIL, Inc.
AGrant or award
Common Stock
+825$38.53$32k38,369Jul 17, 2025
Jun 11, 2025NXPI
NXP Semiconductors N.V.
AGrant or award
Restricted Stock Unitderivative
+1,035$0.00$01,035Jun 12, 2025
Jun 10, 2025UP
Wheels Up Experience Inc.
AGrant or award
Class A Common Stock, par value $0.0001 per share
+148,026$0.00$0235,714Jun 11, 2025
May 29, 2025NXPI
NXP Semiconductors N.V.
MOption exercise
Common Stock
+822$0.00$08,530Jun 2, 2025
May 29, 2025NXPI
NXP Semiconductors N.V.
FTax withholding
Common Stock
-407$196.21$80k8,123Jun 2, 2025
May 29, 2025NXPI
NXP Semiconductors N.V.
MOption exercise
Restricted Stock Unitderivative
-822$0.00$00Jun 2, 2025
May 29, 2025GRAL
GRAIL, Inc.
AGrant or award
Common Stock
+6,082$41.10$250k37,544May 30, 2025
May 23, 2025AVTR
Avantor, Inc.
POpen-market purchase
Common Stockindirect: By a Trust
+30,000$12.50$375k100,000May 27, 2025
May 22, 2025AVTR
Avantor, Inc.
POpen-market purchase
Common Stockindirect: By a Trust
+20,000$12.65$253k70,000May 22, 2025
May 8, 2025AVTR
Avantor, Inc.
AGrant or award
Common Stock
+17,100$0.00$058,111May 12, 2025
May 7, 2025AVTR
Avantor, Inc.
POpen-market purchase
Common Stockindirect: By a Trust
+25,000$12.00$300k50,000May 9, 2025
Apr 28, 2025AVTR
Avantor, Inc.
POpen-market purchase
Common Stockindirect: By a Trust
+25,000$12.50$313k25,000Apr 29, 2025
Apr 15, 2025GRAL
GRAIL, Inc.
AGrant or award
Common Stock
+1,212$25.94$31k31,462Apr 16, 2025
Jan 15, 2025GRAL
GRAIL, Inc.
AGrant or award
Common Stock
+1,828$17.58$32k30,250Jan 16, 2025
Oct 30, 2024GRAL
GRAIL, Inc.
AGrant or award
Common Stock
+296$13.62$4,03228,422Nov 1, 2024
Oct 15, 2024GRAL
GRAIL, Inc.
AGrant or award
Common Stock
+1,656$14.01$23k28,126Oct 17, 2024

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.

Gregory L Summe: insider trades and track record | InsiderTell