| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $107M | ||
| $104M |
Buys | $7,560,575 | 7 | 100 |
Sells | $0 | 0 | 0 |
| MEHRA SANJEEV K | director | 2 | $4.88M | 0 | $0 | $4.88M |
| Ligner Emmanuel | President and CEO | 1 | $993,125 | 0 | $0 | $993,125 |
| SUMME GREGORY L | director | 1 | $940,000 | 0 | $0 | $940,000 |
| LUCIER GREGORY T | director | 2 | $541,200 | 0 | $0 | $541,200 |
| Dingemans Simon | director | 1 | $203,500 | 0 | $0 | $203,500 |
Avantor, Inc., a company established in 1904 and based in Radnor, Pennsylvania, is a global provider of vital products and specialized services. Operating across the Americas, Europe, Asia, the Middle East, and Africa, Avantor caters to a wide array of industries, including biopharmaceuticals, healthcare, educational institutions, government bodies, advanced technology firms, and applied materials enterprises. The company's extensive product portfolio features essential materials and consumables, such as high-purity chemicals and reagents, …
Over the last 12 months, insiders at Avantor, Inc. have bought $7.56M and sold $0 worth of Avantor, Inc. stock.
On average, over the past 5 years, insiders at Avantor, Inc. have bought $4.01M and sold $5.24M worth of stock each year.
Highest buying activity among insiders over the last 12 months: MEHRA SANJEEV K (director) — $4.88M. Ligner Emmanuel (President and CEO) — $993,125. SUMME GREGORY L (director) — $940,000.
The last purchase of 10,000 shares for transaction amount of $83,200 was made by LUCIER GREGORY T (director) on 2026‑05‑08.
| 2026-05-08 | LUCIER GREGORY T | director | 10,000 0.0015% | $8.32 | $83,200 | +64.62% | ||
| 2026-05-01 | Dingemans Simon | director | 25,000 0.0037% | $8.14 | $203,500 | +71.17% | ||
| 2026-03-10 | MEHRA SANJEEV K | director | 125,000 0.018% | $8.01 | $1M | +27.48% | ||
| 2026-02-19 | LUCIER GREGORY T | director | 50,000 0.0072% | $9.16 | $458,000 | +8.79% | ||
| 2026-02-12 | SUMME GREGORY L | director | 100,000 0.0151% | $9.40 | $940,000 | +8.37% | ||
| 2025-12-05 | MEHRA SANJEEV K | director | 350,000 0.0521% | $11.09 | $3.88M | +1.19% | ||
| 2025-11-17 | Ligner Emmanuel | President and CEO | 87,500 0.0134% | $11.35 | $993,125 | +2.02% | ||
| 2025-10-30 | SUMME GREGORY L | director | 100,000 0.0107% | $11.25 | $1.13M | +1.00% | ||
| 2025-08-21 | SUMME GREGORY L | director | 100,000 0.0147% | $12.56 | $1.26M | -11.23% | ||
| 2025-08-05 | Sale | Eck Steven W | SVP & Chief Accounting Officer | 3,476 0.0005% | $11.39 | $39,592 | -4.21% | |
| 2025-05-23 | SUMME GREGORY L | director | 30,000 0.0043% | $12.50 | $375,000 | -8.23% | ||
| 2025-05-22 | SUMME GREGORY L | director | 20,000 0.0029% | $12.65 | $253,000 | -9.41% | ||
| 2025-05-07 | SUMME GREGORY L | director | 25,000 0.0037% | $12.00 | $300,000 | -0.84% | ||
| 2025-04-29 | Massaro Joseph R | director | 8,100 0.0012% | $12.30 | $99,630 | -5.36% | ||
| 2025-04-28 | Peacock Jonathan M | director | 8,091 0.0012% | $12.81 | $103,646 | -3.76% | ||
| 2025-04-28 | Kang Lan | director | 5,000 0.0007% | $12.57 | $62,850 | -3.76% | ||
| 2025-04-28 | SUMME GREGORY L | director | 25,000 0.0035% | $12.50 | $312,500 | -3.76% | ||
| 2025-02-27 | Sale | Bramwell James | EVP Sales, Customer Excellence | 774 0.0001% | $17.00 | $13,158 | -21.89% | |
| 2025-02-27 | Sale | Eck Steven W | SVP & Chief Accounting Officer | 1,033 0.0002% | $17.00 | $17,561 | -21.89% | |
| 2025-02-26 | Sale | Bramwell James | EVP Sales, Customer Excellence | 3,758 0.0006% | $17.53 | $65,878 | -25.03% |
| MEHRA SANJEEV K | director | 475000 0.0701% | $7.41M | 2 | 0 | |
| SUMME GREGORY L | director | 400000 0.059% | $6.24M | 7 | 0 | <0.0001% |
| Ligner Emmanuel | President and CEO | 283424 0.0418% | $4.42M | 1 | 0 | |
| LUCIER GREGORY T | director | 60000 0.0089% | $935,400.00 | 2 | 0 | |
| Dingemans Simon | director | 25000 0.0037% | $389,750.00 | 1 | 0 | |
| Connolly Thomas | 58881710 8.6895% | $917.97M | 7 | 8 | +6.56% | |
| GOLDMAN SACHS & CO. LLC | 43483708 6.4172% | $677.91M | 17 | 19 | +37.47% | |
| Natauri Jo | director | 557656 0.0823% | $8.69M | 18 | 20 | +35.53% |
| Stubblefield Michael | CEO | 429500 0.0634% | $6.7M | 1 | 6 | +1.75% |
| Peacock Jonathan M | director | 202715 0.0299% | $3.16M | 1 | 0 | <0.0001% |
| Szlosek Thomas A | EVP & CFO | 35668 0.0053% | $556,064.12 | 1 | 0 | +1.75% |
| Massaro Joseph R | director | 35038 0.0052% | $546,242.42 | 1 | 0 | <0.0001% |
| Kang Lan | director | 35215 0.0052% | $549,001.85 | 1 | 0 | <0.0001% |
| Increased Positions | 181 | +27.85% | 87M | +12.71% |
| Decreased Positions | 302 | -46.46% | 77M | -11.21% |
| New Positions | 60 | New | 39M | New |
| Sold Out Positions | 105 | Sold Out | 21M | Sold Out |
| Total Postitions | 529 | -18.62% | 696M | +1.5% |
| Dodge & Cox | $1.35M | 17.27% | 117.75M | +313,404 | +0.27% | 2025-09-30 |
| Vanguard Group Inc | $756,234.00 | 9.68% | 65.99M | +1M | +1.75% | 2025-09-30 |
| Blackrock, Inc. | $695,817.00 | 8.9% | 60.72M | -11M | -15.56% | 2025-09-30 |
| Barrow Hanley Mewhinney & Strauss Llc | $395,922.00 | 5.07% | 34.55M | +3M | +10.76% | 2025-09-30 |
| T. Rowe Price Investment Management, Inc. | $377,351.00 | 4.83% | 32.93M | -24M | -41.72% | 2025-09-30 |
| State Street Corp | $233,392.00 | 2.99% | 20.37M | -3M | -13.28% | 2025-09-30 |
| Engine Capital Management, Lp | $225,996.00 | 2.89% | 19.72M | +14M | +258.27% | 2025-09-30 |
| Greenhaven Associates Inc | $209,851.00 | 2.69% | 18.31M | +18M | New | 2025-09-30 |
| Invesco Ltd. | $183,972.00 | 2.35% | 16.05M | +119,508 | +0.75% | 2025-09-30 |
| Clarkston Capital Partners, Llc | $172,133.00 | 2.2% | 15.02M | +1M | +7.42% | 2025-09-30 |