AVTR
insider transactionsAvantor, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 2 different insiders made open-market purchases in the last 90 days, totalling $286.7K.
Net shares · 90d
+35.0K
35.0K buy · 0 sell
Net value · 90d
$286.7K
$286.7K in · $0 out
Sentiment · 90d
Net buying
100% buying · 0% selling
Open-market trades · 90d
2
35.0K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Buy·P
Director
$83.2K
10.0K sh · $8.32
Own +20%
-
Grant·A
Director
$0
25.3K sh
Own +57%
-
Grant·A
Director
$0
25.3K sh
Own +289%
-
Grant·A
Director
$0
25.3K sh
Own +406%
-
Grant·A
Director
$0
25.3K sh
Own +116%
-
Grant·A
Director
$0
25.3K sh
Own +48%
-
Grant·A
Director
$0
25.3K sh
Own +312%
-
Grant·A
Director
$0
25.3K sh
Own +42%
-
Grant·A
Director
$0
25.3K sh
Own +43%
-
Buy·P
Director
$203.5K
25.0K sh · $8.14
Own New
-
Grant·A
EVP, Bioscience & Medtech
$0
246.0K sh
Own New
-
Grant·A
EVP, Bioscience & Medtech
$0
146.6K sh
Own New
-
Grant·A
SVP & Chief Accounting Officer
$0
31.6K sh
Own +32%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 8, 2026 | Gregory T Lucier | Buy P | 10.0K | $83.2K |
| May 7, 2026 | Mala Murthy | Grant A | 25.3K | $0 |
| May 7, 2026 | Gregory T Lucier | Grant A | 25.3K | $0 |
| May 7, 2026 | Simon Dingemans | Grant A | 25.3K | $0 |
| May 7, 2026 | Louise Makin | Grant A | 25.3K | $0 |
| May 7, 2026 | Joseph R Massaro | Grant A | 25.3K | $0 |
| May 7, 2026 | Sanjeev K Mehra | Grant A | 25.3K | $0 |
| May 7, 2026 | Michael Severino | Grant A | 25.3K | $0 |
| May 7, 2026 | Gregory L Summe | Grant A | 25.3K | $0 |
| May 1, 2026 | Simon Dingemans | Buy P | 25.0K | $203.5K |
| May 1, 2026 | Ludovic Brellier | Grant A | 246.0K | $0 |
| May 1, 2026 | Ludovic Brellier | Grant A | 146.6K | $0 |
| Apr 3, 2026 | Steven W Eck | Grant A | 31.6K | $0 |
About AVTR insider trading
This page tracks insider transactions for Avantor, Inc. (AVTR) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.