Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>

Common stock purchase or sale:
Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
2025-08-05 Sale | 2025-08-06 4:32 pm | Avantor Inc. | AVTR | Eck Steven W SVP & Chief Accounting Officer | 3,476 | $11.39 | $39,592 | 55,068 (Direct) | View |
2025-05-23 Purchase | 2025-05-27 4:58 pm | Avantor Inc. | AVTR | SUMME GREGORY L Director | 30,000 | $12.5 | $375,000 | 158,111 (Indirect Direct) | View |
2025-05-22 Purchase | 2025-05-22 5:37 pm | Avantor Inc. | AVTR | SUMME GREGORY L Director | 20,000 | $12.65 | $253,000 | 128,111 (Indirect Direct) | View |
2025-05-07 Purchase | 2025-05-09 4:51 pm | Avantor Inc. | AVTR | SUMME GREGORY L Director | 25,000 | $12 | $300,000 | 50,000 (Indirect) | View |
2025-04-29 Purchase | 2025-04-29 5:58 pm | Avantor Inc. | AVTR | Massaro Joseph R Director | 8,100 | $12.3 | $99,630 | 35,038 (Direct) | View |
2025-04-28 Purchase | 2025-04-29 5:58 pm | Avantor Inc. | AVTR | SUMME GREGORY L Director | 25,000 | $12.5 | $312,500 | 66,011 (Indirect Direct) | View |
2025-04-28 Purchase | 2025-04-29 5:58 pm | Avantor Inc. | AVTR | Kang Lan Director | 5,000 | $12.57 | $62,850 | 35,215 (Direct) | View |
2025-04-28 Purchase | 2025-04-29 5:58 pm | Avantor Inc. | AVTR | Peacock Jonathan M Director | 8,091 | $12.81 | $103,646 | 202,715 (Direct) | View |
2025-02-26 Sale | 2025-02-28 4:53 pm | Avantor Inc. | AVTR | Bramwell James EVP Sales, Customer Excellence | 4,532 | $17.44 | $79,036 | 86,605 (Direct) | View |
2025-02-26 Sale | 2025-02-28 4:51 pm | Avantor Inc. | AVTR | Eck Steven W SVP & Chief Accounting Officer | 5,940 | $17.44 | $103,581 | 39,571 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
2025-07-31 Tax Withholding | 2025-08-04 4:43 pm | N/A N/A | Avantor Inc. | AVTR | Eck Steven W SVP & Chief Accounting Officer | 1,385 | $13.44 | 58,544 (Direct) | View |
2025-07-24 Tax Withholding | 2025-07-25 4:32 pm | N/A N/A | Avantor Inc. | AVTR | Sokenu Claudius EVP, Chief Legal & Compliance | 3,123 | $14.01 | 177,106 (Direct) | View |
2025-06-21 Tax Withholding | 2025-06-24 5:20 pm | N/A N/A | Avantor Inc. | AVTR | Walker Corey President Laboratory Solutions | 2,730 | $13.57 | 231,271 (Direct) | View |
2025-05-21 Gift | 2025-05-21 5:37 pm | N/A N/A | Avantor Inc. | AVTR | Stubblefield Michael President & CEO | 76,000 | $0 | 1,917,522 (Direct) | View |
2025-05-09 Option Award | 2025-05-12 5:35 pm | N/A N/A | Avantor Inc. | AVTR | Walker Corey President Laboratory Solutions | 162,866 | $0 | 234,001 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:35 pm | N/A N/A | Avantor Inc. | AVTR | Carethers John Director | 17,100 | $0 | 45,858 (Direct) | View |
2025-05-09 Option Award | 2025-05-12 5:35 pm | N/A N/A | Avantor Inc. | AVTR | Eck Steven W SVP & Chief Accounting Officer | 20,358 | $0 | 59,929 (Direct) | View |
2025-05-09 Option Award | 2025-05-12 5:35 pm | N/A N/A | Avantor Inc. | AVTR | Sokenu Claudius EVP, Chief Legal & Compliance | 122,149 | $0 | 180,229 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:35 pm | N/A N/A | Avantor Inc. | AVTR | SUMME GREGORY L Director | 17,100 | $0 | 58,111 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:34 pm | N/A N/A | Avantor Inc. | AVTR | Massaro Joseph R Director | 17,100 | $0 | 52,138 (Direct) | View |
2025-05-09 Option Award | 2025-05-12 5:34 pm | N/A N/A | Avantor Inc. | AVTR | Hankamer Brittany EVP, Chief HR Officer | 122,149 | $0 | 171,744 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:34 pm | N/A N/A | Avantor Inc. | AVTR | Peacock Jonathan M Director | 17,100 | $0 | 219,815 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:34 pm | N/A N/A | Avantor Inc. | AVTR | Kang Lan Director | 17,100 | $0 | 52,315 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:34 pm | N/A N/A | Avantor Inc. | AVTR | Murthy Mala Director | 17,100 | $0 | 44,209 (Direct) | View |
2025-05-09 Option Award | 2025-05-12 5:33 pm | N/A N/A | Avantor Inc. | AVTR | Couturier Christophe EVP, AMEA | 61,074 | $0 | 144,914 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:33 pm | N/A N/A | Avantor Inc. | AVTR | Andres Juan Director | 17,100 | $0 | 65,480 (Direct) | View |
2025-05-09 Option Award | 2025-05-12 5:33 pm | N/A N/A | Avantor Inc. | AVTR | Jones R. Brent EVP, Chief Financial Officer | 162,866 | $0 | 269,676 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:33 pm | N/A N/A | Avantor Inc. | AVTR | Makin Louise Director | 17,100 | $0 | 21,870 (Direct) | View |
2025-05-08 Option Award | 2025-05-12 5:33 pm | N/A N/A | Avantor Inc. | AVTR | SEVERINO MICHAEL Director | 17,100 | $0 | 60,551 (Direct) | View |
2025-05-09 Option Award | 2025-05-12 5:32 pm | N/A N/A | Avantor Inc. | AVTR | Gourdier Benoit EVP, Bioscience Production | 162,866 | $0 | 236,948 (Direct) | View |
Ownership | 2025-04-08 5:01 pm | N/A N/A | Avantor Inc. | AVTR | Walker Corey President Laboratory Solutions | 0 | $0 | 245,475 (Direct) | View |
2025-04-05 Tax Withholding | 2025-04-08 5:01 pm | N/A N/A | Avantor Inc. | AVTR | Couturier Christophe EVP, AMEA | 569 | $15.13 | 83,840 (Direct) | View |
2025-02-24 Tax Withholding | 2025-02-26 4:45 pm | N/A N/A | Avantor Inc. | AVTR | Couturier Christophe EVP, AMEA | 750 | $17.47 | 84,409 (Direct) | View |
2025-02-25 Tax Withholding | 2025-02-26 4:45 pm | N/A N/A | Avantor Inc. | AVTR | Couturier Christophe EVP, AMEA | 556 | $17.56 | 84,409 (Direct) | View |
2025-02-24 Tax Withholding | 2025-02-26 4:45 pm | N/A N/A | Avantor Inc. | AVTR | Stubblefield Michael President & CEO | 6,800 | $17.47 | 1,976,430 (Direct) | View |
2025-02-25 Tax Withholding | 2025-02-26 4:45 pm | N/A N/A | Avantor Inc. | AVTR | Stubblefield Michael President & CEO | 4,969 | $17.56 | 1,976,430 (Direct) | View |
2025-02-24 Tax Withholding | 2025-02-26 4:44 pm | N/A N/A | Avantor Inc. | AVTR | Eck Steven W SVP & Chief Accounting Officer | 439 | $17.47 | 45,511 (Direct) | View |
2025-02-25 Tax Withholding | 2025-02-26 4:44 pm | N/A N/A | Avantor Inc. | AVTR | Eck Steven W SVP & Chief Accounting Officer | 505 | $17.56 | 45,511 (Direct) | View |
2025-02-24 Tax Withholding | 2025-02-26 4:44 pm | N/A N/A | Avantor Inc. | AVTR | Bramwell James EVP Sales, Customer Excellence | 2,181 | $17.47 | 91,137 (Direct) | View |
2025-02-25 Tax Withholding | 2025-02-26 4:44 pm | N/A N/A | Avantor Inc. | AVTR | Bramwell James EVP Sales, Customer Excellence | 583 | $17.56 | 91,137 (Direct) | View |
2025-02-24 Tax Withholding | 2025-02-26 4:44 pm | N/A N/A | Avantor Inc. | AVTR | Hankamer Brittany EVP, Chief HR Officer | 437 | $17.47 | 49,595 (Direct) | View |
2025-02-25 Tax Withholding | 2025-02-26 4:44 pm | N/A N/A | Avantor Inc. | AVTR | Hankamer Brittany EVP, Chief HR Officer | 369 | $17.56 | 49,595 (Direct) | View |
2025-02-20 Option Award | 2025-02-24 5:31 pm | N/A 2035-02-20 | Avantor Inc. | AVTR | Gourdier Benoit EVP, Bioscience Production | 122,299 | $0 | 160,647 (Direct) | View |
2025-02-23 Tax Withholding | 2025-02-24 5:31 pm | N/A N/A | Avantor Inc. | AVTR | Gourdier Benoit EVP, Bioscience Production | 2,842 | $17.3 | 160,647 (Direct) | View |
2025-02-20 Option Award | 2025-02-24 5:31 pm | N/A N/A | Avantor Inc. | AVTR | Eck Steven W SVP & Chief Accounting Officer | 18,867 | $0 | 46,455 (Direct) | View |
2025-02-23 Tax Withholding | 2025-02-24 5:31 pm | N/A N/A | Avantor Inc. | AVTR | Eck Steven W SVP & Chief Accounting Officer | 1,956 | $17.3 | 46,455 (Direct) | View |
2025-02-20 Option Award | 2025-02-24 5:30 pm | N/A 2035-02-20 | Avantor Inc. | AVTR | Hankamer Brittany EVP, Chief HR Officer | 58,703 | $0 | 91,952 (Direct) | View |
2025-02-23 Tax Withholding | 2025-02-24 5:30 pm | N/A N/A | Avantor Inc. | AVTR | Hankamer Brittany EVP, Chief HR Officer | 1,537 | $17.3 | 91,952 (Direct) | View |