Every Form 4 that Avantor, Inc. (AVTR) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow AVTR and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full AVTR filings page.
Avantor, Inc. (AVTR) reported that President and CEO Emmanuel Ligner had 29,803 shares of common stock withheld on 2026-08-18 to cover tax withholding obligations arising from the vesting of RSUs. The price used for the withholding was $13.33 per share, and Ligner now directly holds 737,334 shares of Avantor common stock.
Avantor, Inc. (AVTR) reported an insider equity transaction by EVP, Chief HR Officer Brittany Hankamer. On August 14, 2026, 181 shares of common stock were disposed of to cover tax withholding obligations in connection with the vesting of RSUs, at a price of $13.66 per share. Following this withholding transaction, Hankamer directly held 248,864 shares of Avantor common stock.
Avantor, Inc. reported that SVP & Chief Accounting Officer Steven W. Eck had 1,385 shares of common stock withheld on July 31, 2026 to cover tax withholding obligations upon the vesting of RSUs, at $13.78 per share. After this tax-withholding disposition, he directly holds 129,593 Avantor common shares. The transaction was not made pursuant to a Rule 10b5-1 trading plan.
Avantor, Inc. executive Claudius Sokenu, EVP, Chief Legal & Compliance, reported a tax-related disposition where 1,201 shares of common stock were withheld by the issuer at $11.44 per share to cover RSU vesting tax obligations, leaving 251,228 shares held directly.
Avantor, Inc. reported that executive Corey Walker, President of VWR Distribution & Services, had 3,010 shares of Common Stock withheld at $9.58 per share to cover tax withholding obligations tied to vesting restricted stock units (RSUs). This was not an open-market sale but a tax-related share disposition. After this withholding, Walker directly holds 384,535 shares of Avantor common stock.
Murthy Mala reported acquisition or exercise transactions in this Form 4 filing.
Avantor director Mala Murthy reported an equity award of company stock. She received 25,270 shares of Avantor common stock as a grant at no cash cost, increasing her direct holdings to 69,479 shares after the transaction.
According to a footnote, the grant is in the form of restricted stock units that will vest on May 7, 2027, meaning the award is part of her long-term compensation and becomes fully owned only after the vesting date is reached.
Avantor, Inc. director Gregory T. Lucier reported two stock acquisitions. He received a grant of 25,270 restricted stock units, which vest on May 7, 2027, as equity compensation. In a separate open-market transaction, a trust for which he serves as trustee and is a beneficiary purchased 10,000 shares of common stock at a weighted average price of about $8.32, with individual trades between $8.30 and $8.32. Following these transactions, the trust holds 60,000 shares indirectly attributed to him, while his direct holdings total 34,006 shares. He disclaims beneficial ownership of the trust shares except for his pecuniary interest.
Dingemans Simon reported acquisition or exercise transactions in this Form 4 filing.
Avantor director Simon Dingemans reported an equity compensation grant of 25,270 shares of Common Stock. The award is in the form of restricted stock units that vest on May 7, 2027, meaning the shares are delivered only if he remains eligible through that date.
Following this grant, Dingemans directly holds 31,495 shares of Avantor stock. The transaction carried no cash purchase price and reflects a routine, stock-based component of his director compensation rather than an open-market buy or sell.
Makin Louise reported acquisition or exercise transactions in this Form 4 filing.
Avantor, Inc. director Louise Makin received an equity award of 25,270 shares of common stock in the form of restricted stock units. The award was granted at a stated price of $0.00 per share as part of compensation rather than a market purchase or sale.
The restricted stock units are scheduled to vest on May 7, 2027, meaning the shares will be delivered only if the vesting conditions are met. Following this grant, Makin directly holds a total of 47,140 shares of Avantor common stock, indicating the transaction is an automatic, non-market equity grant.
Massaro Joseph R reported acquisition or exercise transactions in this Form 4 filing.
Avantor director Joseph R. Massaro received a compensation-related stock grant. He was awarded 25,270 shares of Avantor common stock on May 7, 2026 as a grant or award, rather than a market purchase. The shares are in the form of restricted stock units that vest on May 7, 2027.
After this grant, Massaro directly owns 77,408 shares of Avantor common stock. This filing reflects an equity-based compensation decision by the company’s board, not an open-market transaction.
Avantor, Inc. director Sanjeev K. Mehra reported an equity compensation grant. He received 25,270 shares of common stock in the form of restricted stock units at no cash cost, classified as a grant or award acquisition.
The restricted stock units vest on May 07, 2027, meaning he will fully earn the shares on that date if vesting conditions are met. After this grant, Mehra directly holds 33,376 shares of Avantor common stock.
The filing also notes 475,000 shares of common stock held indirectly through a limited liability company. Mehra disclaims beneficial ownership of these indirectly held securities except to the extent of any pecuniary interest.
SEVERINO MICHAEL reported acquisition or exercise transactions in this Form 4 filing.
Avantor director Michael Severino reported a compensation grant of 25,270 shares of Common Stock in the form of restricted stock units that vest on May 7, 2027. The award carries no purchase price and increases his direct holdings to 85,821 shares, reflecting routine equity-based board compensation rather than an open-market share purchase.
SUMME GREGORY L reported acquisition or exercise transactions in this Form 4 filing.
Avantor, Inc. director Gregory L. Summe reported an equity award and updated holdings. He received a grant of 25,270 shares of common stock in the form of restricted stock units, with no cash paid per share. According to the footnote, these restricted stock units vest on May 7, 2027. After this award, he directly holds 83,381 shares and indirectly holds 400,000 shares through a trust, giving a clearer picture of both his compensation and total reported ownership.
Avantor, Inc. director Simon Dingemans reported an open-market purchase of 25,000 shares of Common Stock. The trade was executed at a price of $8.14 per share and is reported as indirect ownership "By Spouse", meaning the shares are held by his spouse but attributed to him for reporting.
The filing also shows Dingemans with 6,225 shares of Common Stock held directly as of the same date in a separate holding entry. There are no derivative securities reported, so this update reflects only common stock ownership.
Avantor, Inc. executive Ludovic Brellier, EVP, Bioscience & Medtech, received new equity awards. He was granted 146,566 shares of common stock in the form of restricted stock units that vest in three equal annual installments beginning on May 1, 2027. Following this grant, he holds 146,566 common shares directly. He also received 246,002 stock options to buy common stock at an exercise price of $8.76 per share, which vest in three equal annual installments starting on May 1, 2027 and expire on May 1, 2036. These awards are part of his compensation, not open-market purchases or sales.
Eck Steven W reported acquisition or exercise transactions in this Form 4 filing.
Avantor, Inc. reported that SVP & Chief Accounting Officer Steven W. Eck received an equity grant in the form of restricted stock units. He was awarded 31,645 shares of Common Stock at a stated price of $0.00 per share, reflecting a compensation grant rather than an open-market purchase.
The restricted stock units vest in three equal annual installments beginning on April 3, 2027, tying the award to multi‑year service. After this grant, Eck directly holds 130,978 shares of Avantor common stock, showing his ongoing equity stake in the company.
Avantor, Inc. director-associated entity reported a sizable open-market share purchase. A limited liability company linked to director Sanjeev K. Mehra bought 125,000 shares of Avantor common stock on March 10, 2026 at a weighted average price of $8.01 per share, with individual trades ranging from $7.98 to $8.05. Following these purchases, the LLC held 475,000 shares of Avantor common stock indirectly. Separately, Mehra also directly held 8,106 shares after the reported transactions. Mehra disclaims beneficial ownership of the indirectly held securities except to the extent of any pecuniary interest.
Avantor, Inc. executive Claudius Sokenu reported a small share disposition tied to equity compensation taxes. On February 23, 2026, 2,376 shares of common stock at $8.89 per share were withheld by Avantor to cover tax obligations from RSU vesting, leaving him with 252,429 shares directly held.
Avantor, Inc. executive Brittany Hankamer reported two tax-related share dispositions tied to restricted stock unit vesting. On February 23, 2026, 1,324 shares of common stock were withheld at $8.89 per share, and on February 24, 2026, 359 shares were withheld at $9.11 per share to satisfy tax withholding obligations. These were coded as Form 4 transaction code F, indicating payment of tax liability by delivering securities rather than open-market sales. After these withholdings, Hankamer directly owned 249,045 shares of Avantor common stock.
Avantor, Inc. executive vice president and chief financial officer Brent R. Jones reported a Form 4 transaction in which 2,805 shares of common stock were disposed of on February 23, 2026 to satisfy tax withholding obligations tied to vesting restricted stock units (RSUs).
The shares were withheld by Avantor, rather than sold in the open market. After this tax-withholding disposition, Jones directly owned 419,782 shares of Avantor common stock.
Avantor EVP Benoit Gourdier reported a tax-related share disposition. On February 23, 2026, 3,029 shares of Avantor common stock were withheld at $8.89 per share to cover tax obligations from vesting restricted stock units, leaving him with 362,859 directly held shares.
Avantor SVP & Chief Accounting Officer Steven W. Eck reported two small tax-related share dispositions in Avantor common stock. On February 24, 452 shares were withheld at $9.11 per share to cover tax obligations from vesting RSUs, leaving 99,333 shares held directly. On February 23, 2,017 shares were similarly withheld at $8.89 per share for taxes after RSU vesting. These are reported as dispositions for tax withholding, not open‑market sales.
Avantor, Inc. executive Brittany Hankamer reported equity award activity and related tax withholding. On February 19, 2026, she received 80,618 shares of common stock as a grant and 317,310 stock options, both vesting in three equal installments beginning February 19, 2027. On February 20, 2026, 1,453 common shares were withheld at $9.03 per share to cover tax obligations from restricted stock unit vesting, leaving her with 250,728 common shares held directly.
Avantor, Inc. director Gregory T. Lucier reported an indirect open-market purchase of 50,000 shares of common stock on February 19, 2026 at a weighted average price of $9.16 per share. The shares were bought through a trust that purchased in multiple trades between $9.06 and $9.25 per share.
After this transaction, the trust held 50,000 shares, while Lucier also reported 8,736 shares owned directly. The filing notes the shares are held by a trust for which he is trustee and beneficiary, and he disclaims beneficial ownership beyond his pecuniary interest.
Avantor, Inc. executive Mary Blenn, EVP and Chief Operating Officer, reported equity awards received on February 19, 2026. She acquired stock options for 1,041,766 shares of common stock at an exercise price of $0.00 per option and a grant of 235,993 shares of common stock.
The filing notes that the restricted stock units vest in three equal annual installments beginning on February 19, 2027. The stock options also vest in three equal annual installments starting on the same date, aligning her compensation with long-term company performance.
Avantor, Inc. executive Steven W. Eck, SVP & Chief Accounting Officer, reported equity-based compensation and related tax withholding transactions. On February 19, 2026, he received a grant of 48,859 shares of common stock in the form of restricted stock units that vest in three equal annual installments beginning on February 19, 2027. He was also granted 43,230 stock options that vest on the same three-year schedule starting on that date. On February 20, 2026, 2,125 shares of common stock were withheld at $9.03 per share to cover tax obligations from RSU vesting, a tax-withholding disposition rather than an open-market sale. After these transactions, he directly held 101,802 shares of common stock and 43,230 stock options.
Avantor, Inc. reported that President and CEO Emmanuel Ligner received new equity awards under a compensation arrangement. On February 19, 2026, he was granted stock options for 1,903,847 shares at an exercise price of $0.00 per share and a separate award of 483,713 shares of common stock in the form of restricted stock units. The RSUs and options each vest in three equal annual installments beginning on February 19, 2027, aligning a significant portion of his compensation with the company’s long-term performance.
Avantor, Inc. president Corey Walker reported new equity awards and a related tax share withholding. On February 19, 2026, he acquired 161,237 shares of common stock as a restricted stock unit grant and 634,617 stock options, both vesting in three equal annual installments beginning on February 19, 2027.
On February 20, 2026, 4,963 common shares were disposed of through a tax-withholding transaction at $9.03 per share, with shares withheld by the issuer to cover RSU tax obligations, not an open-market sale. After these transactions, Walker directly held 387,545 common shares.
Avantor, Inc. executive Claudius Sokenu, EVP and Chief Legal & Compliance Officer, reported equity compensation changes. He received a grant of 80,618 shares of common stock as restricted stock units that vest in three equal annual installments beginning on February 19, 2027.
He was also granted 317,310 stock options, which vest on the same three-year schedule starting February 19, 2027. In a separate transaction, 2,919 shares of common stock were withheld at $9.03 per share to cover tax obligations upon RSU vesting, leaving him with 254,805 common shares held directly after that withholding.
Avantor EVP Benoit Gourdier reported new equity awards and related tax withholding. On February 19, 2026 he received 134,364 restricted stock units and 528,848 stock options, each vesting in three equal annual installments beginning February 19, 2027. On February 20, 2026, 4,160 common shares at $9.03 were withheld to cover taxes, leaving 365,888 common shares held directly.
Avantor, Inc. executive vice president and chief financial officer Jones R. Brent reported equity compensation changes and related tax withholding. He received a grant of 161,237 shares of common stock as restricted stock units and 634,617 stock options, both vesting in three equal annual installments beginning on February 19, 2027.
To cover tax withholding obligations from restricted stock unit vesting, 9,506 shares of common stock were withheld by Avantor as a tax-withholding disposition. After these transactions, Brent continued to hold a substantial number of Avantor shares directly.
Avantor director Gregory L. Summe, through a trust, reported an open-market purchase of 100,000 shares of common stock on February 12, 2026 at $9.40 per share. After this transaction, the trust held 400,000 shares indirectly attributed to him.
Separately, Summe also reported 58,111 shares of Avantor common stock held directly. The filing notes that he disclaims beneficial ownership of the trust’s shares except to the extent of his economic interest, meaning the trust is the primary holder of that indirect position.
Avantor, Inc. reported that director Simon Dingemans received an equity award in the form of restricted stock units. On 01/02/2026, he was granted 6,225 shares of common stock at a price of $0 per share, reflecting a stock-based compensation grant rather than a market purchase. Following this award, he beneficially owned 6,225 common shares in direct form.
According to the disclosure, the grant consists of restricted stock units that are scheduled to vest on May 6, 2026. This means the units convert into common shares for the director only once the vesting date is reached, aligning his compensation with the company’s future performance and continued service.
Avantor, Inc. director reported acquiring additional company stock. On December 5, 2025, the insider received 8,106 restricted stock units of Avantor common stock, which vest on May 6, 2026, and are held directly. On the same date, the insider also purchased 350,000 shares of Avantor common stock at a weighted average price of $11.09 per share through a limited liability company, reported as indirectly owned.
The share purchases were executed in multiple trades at prices ranging from $10.98 to $11.21 per share. The reporting person states they will provide full trade-by-trade pricing details upon request and disclaims beneficial ownership of the indirectly held securities except to the extent of any pecuniary interest.
Avantor, Inc. (AVTR) disclosed that a reporting person who serves as both President and CEO and a director acquired common stock in the company. On 11/17/2025, this insider purchased 87,500 shares of Avantor common stock at a price of $11.35 per share. Following this open-market purchase, the insider beneficially owns 283,424 shares, held directly.
Avantor (AVTR) reported insider equity awards for its EVP, Chief Operating Officer. On November 10, 2025, the officer received 17,391 restricted stock units at $0 and 47,058 stock options with a $11.5 exercise price, expiring November 10, 2035.
Both the RSUs and options vest in two equal annual installments beginning on November 10, 2026. Following these awards, the officer directly beneficially owned 17,391 shares and 47,058 derivative securities.
Avantor (AVTR) Form 4: A company director reported buying 100,000 shares of common stock on 10/30/2025 at $11.25 per share (transaction code P). Following the trade, reported holdings are 300,000 shares held indirectly by a trust and 58,111 shares held directly.
The footnote states the reporting person disclaims beneficial ownership of shares held by the trust except to the extent of his pecuniary interest.
Avantor, Inc. director Gregory T. Lucier received a grant of 8,736 restricted stock units (RSUs) on 10/03/2025 that vest one year later on 10/03/2026. The grant was reported on a Form 4 filed by a single reporting person and shows an acquisition with a reported price of $0, consistent with equity awards issued as compensation rather than an open-market purchase. After the grant Lucier beneficially owns 8,736 shares of common stock directly. The Form 4 signature was executed by an attorney-in-fact on 10/07/2025.
Avantor (AVTR) insider filing: The company’s EVP, Bioscience Production reported a Form 4 transaction on 10/02/2025. The filing shows 1,264 shares of common stock were withheld by the issuer at $13.77 under code F, which reflects shares retained to satisfy tax withholding in connection with RSU vesting. Following this administrative withholding, the reporting person directly holds 235,684 shares.