Open Insider Trading Activity for Avantor, Inc. Director Summe Gregory L
31-day price and insider activity (up to 2 years)
Daily candles with triangles for the buy and sale transactions shown below. Scroll left or zoom out to load earlier candles (up to 2 years).
▲ Insider buy
▼ Insider sale
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. AVTR | 2026-02-12 | 2026-02-12 | Avantor, Inc. | Summe Gregory L | Director | Buy | 1 | 100,000 | $9.40 | $940,000.00 | 25.00% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. AVTR | 2025-10-31 | 2025-10-30 | Avantor, Inc. | Summe Gregory L | Director | Buy | 1 | 100,000 | $11.25 | $1,125,000.00 | 33.33% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. AVTR | 2025-08-22 | 2025-08-21 | Avantor, Inc. | Summe Gregory L | Director | Buy | 1 | 100,000 | $12.56 | $1,256,000.00 | 50.00% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. AVTR | 2025-05-27 | 2025-05-23 | Avantor, Inc. | Summe Gregory L | Director | Buy | 1 | 30,000 | $12.50 | $375,000.00 | 30.00% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. AVTR | 2025-05-22 | 2025-05-22 | Avantor, Inc. | Summe Gregory L | Director | Buy | 1 | 20,000 | $12.65 | $253,000.00 | 28.57% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. AVTR | 2025-05-09 | 2025-05-07 | Avantor, Inc. | Summe Gregory L | Director | Buy | 1 | 25,000 | $12.00 | $300,000.00 | 50.00% | View Filing |