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AVTR Insider Trading

Insider Ownership Percentage: 1.20%
Insider Buying (Last 12 Months): $6,034,130.00
Insider Selling (Last 12 Months): $191,489.09

Avantor Insider Trading History Chart

This chart shows the insider buying and selling history at Avantor by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Avantor Share Price & Price History

Current Price: $11.08
Price Change: ▲ Price Increase of +0.155 (1.42%)
As of 02/2/2026 04:59 PM ET

This chart shows the closing price history over time for AVTR up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Avantor Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
12/5/2025Sanjeev K MehraDirectorBuy350,000$11.09$3,881,500.00350,000View SEC Filing Icon  
10/30/2025Gregory L. SummeDirectorBuy100,000$11.25$1,125,000.00300,000View SEC Filing Icon  
8/5/2025Steven W. EckCAOSell3,476$11.39$39,591.6455,068View SEC Filing Icon  
5/23/2025Gregory L. SummeDirectorBuy30,000$12.50$375,000.00100,000View SEC Filing Icon  
5/22/2025Gregory L. SummeDirectorBuy20,000$12.65$253,000.0070,000View SEC Filing Icon  
5/7/2025Gregory L. SummeDirectorBuy25,000$12.00$300,000.0050,000View SEC Filing Icon  
4/29/2025Joseph R. MassaroDirectorBuy8,100$12.30$99,630.0035,038View SEC Filing Icon  
2/26/2025James BramwellEVPSell3,758$17.53$65,877.7487,379View SEC Filing Icon  
2/26/2025Steven W. EckCAOSell4,907$17.53$86,019.7140,604View SEC Filing Icon  
9/5/2024Steven W. EckCAOSell3,525$25.06$88,336.5029,544View SEC Filing Icon  
2/27/2024James BramwellEVPSell6,203$24.49$151,911.47101,143View SEC Filing Icon  
9/7/2023Steven W. EckCAOSell7,577$20.64$156,389.2828,187View SEC Filing Icon  
8/25/2023Frederic VanderhaegenEVPSell25,000$21.47$536,750.00160,735View SEC Filing Icon  
4/11/2023Christophe CouturierEVPSell1,498$21.18$31,727.6498,650View SEC Filing Icon  
3/3/2023Gerard BrophyEVPSell3,914$25.00$97,850.00108,715View SEC Filing Icon  
2/23/2023Christophe CouturierEVPSell3,078$24.24$74,610.7294,370View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Avantor (NYSE:AVTR)

95.08% of Avantor stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at AVTR by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Avantor Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/2/2026Truist Financial Corp38,030$0.44M0.0%-9.0%0.006%Search for SEC Filing on Google Icon
2/2/2026Manhattan West Asset Management LLC194,671$2.23M0.5%-12.9%0.029%Search for SEC Filing on Google Icon
2/2/2026Fifth Third Bancorp60,886$0.70M0.0%-9.7%0.009%Search for SEC Filing on Google Icon
2/2/2026Danske Bank A S5,500$63K0.0%-19.1%0.001%Search for SEC Filing on Google Icon
2/2/2026Oppenheimer Asset Management Inc.141,017$1.62M0.0%-21.2%0.021%Search for SEC Filing on Google Icon
1/30/2026State of New Jersey Common Pension Fund D241,860$2.77M0.0%-1.0%0.035%Search for SEC Filing on Google Icon
1/30/2026Pekin Hardy Strauss Inc.37,000$0.42M0.0%N/A0.005%Search for SEC Filing on Google Icon
1/30/2026Archer Investment Corp13,047$0.15M0.0%+79.6%0.002%Search for SEC Filing on Google Icon
1/30/2026AMG National Trust Bank138,313$1.59M0.0%N/A0.020%Search for SEC Filing on Google Icon
1/30/2026M&T Bank Corp17,210$0.20M0.0%-8.2%0.003%Search for SEC Filing on Google Icon
1/29/2026Comerica Bank296,375$3.40M0.0%-30.2%0.043%Search for SEC Filing on Google Icon
1/29/2026Pictet Asset Management Holding SA104,561$1.20M0.0%+9.1%0.015%Search for SEC Filing on Google Icon
1/29/2026State of Michigan Retirement System161,100$1.85M0.0%-0.7%0.024%Search for SEC Filing on Google Icon
1/29/2026Sanctuary Advisors LLC56,187$0.64M0.0%+5.2%0.008%Search for SEC Filing on Google Icon
1/29/2026Advisors Capital Management LLC365,922$4.19M0.0%+2.5%0.054%Search for SEC Filing on Google Icon
1/29/2026Vanguard Group Inc.64,904,889$743.81M0.0%-1.6%9.519%Search for SEC Filing on Google Icon
1/29/2026Veracity Capital LLC20,462$0.23M0.1%-37.2%0.003%Search for SEC Filing on Google Icon
1/28/2026Arizona State Retirement System191,257$2.19M0.0%-5.1%0.028%Search for SEC Filing on Google Icon
1/28/2026B. Metzler seel. Sohn & Co. AG75,829$0.87M0.0%-39.6%0.011%Search for SEC Filing on Google Icon
1/28/2026Universal Beteiligungs und Servicegesellschaft mbH219,378$2.58M0.0%+34.0%0.032%Search for SEC Filing on Google Icon
1/27/2026TD Waterhouse Canada Inc.24,100$0.28M0.0%-38.2%0.004%Search for SEC Filing on Google Icon
1/27/2026Zurcher Kantonalbank Zurich Cantonalbank 202,691$2.32M0.0%+50.1%0.030%Search for SEC Filing on Google Icon
1/26/2026Whittier Trust Co. of Nevada Inc.9,284$0.11M0.0%-92.2%0.001%Search for SEC Filing on Google Icon
1/26/2026Whittier Trust Co.5,699$70K0.0%-97.5%0.001%Search for SEC Filing on Google Icon
1/26/2026Private Trust Co. NA2,769$32K0.0%+46.2%0.000%Search for SEC Filing on Google Icon
1/26/2026Mirae Asset Global Investments Co. Ltd.25,594$0.29M0.0%-43.3%0.004%Search for SEC Filing on Google Icon
1/26/2026Lightrock Netherlands B.V.267,468$3.07M0.3%-51.8%0.039%Search for SEC Filing on Google Icon
1/26/2026CWM LLC15,684$0.18M0.0%+434.4%0.002%Search for SEC Filing on Google Icon
1/26/2026KBC Group NV21,451$0.25M0.0%-49.0%0.003%Search for SEC Filing on Google Icon
1/23/2026Farther Finance Advisors LLC7,938$91K0.0%+114.0%0.001%Search for SEC Filing on Google Icon
1/23/2026Transcend Capital Advisors LLC10,649$0.12M0.0%-23.5%0.002%Search for SEC Filing on Google Icon
1/23/2026State of Alaska Department of Revenue67,352$0.77M0.0%-7.6%0.010%Search for SEC Filing on Google Icon
1/23/2026Choreo LLC35,647$0.41M0.0%-11.6%0.005%Search for SEC Filing on Google Icon
1/22/2026Massachusetts Financial Services Co. MA7,214,408$82.68M0.0%-3.8%1.058%Search for SEC Filing on Google Icon
1/22/2026Bfsg LLC19,325$0.22M0.0%+45.6%0.003%Search for SEC Filing on Google Icon
1/21/2026Oak Thistle LLC100,729$1.15M0.2%+86.5%0.015%Search for SEC Filing on Google Icon
1/21/2026Yousif Capital Management LLC190,962$2.26M0.0%-2.2%0.028%Search for SEC Filing on Google Icon
1/21/2026Portside Wealth Group LLC10,213$0.12M0.0%-19.8%0.001%Search for SEC Filing on Google Icon
1/21/2026Leo Wealth LLC38,819$0.45M0.0%-2.8%0.006%Search for SEC Filing on Google Icon
1/20/2026Tran Capital Management L.P.43,508$0.50M0.1%-21.5%0.006%Search for SEC Filing on Google Icon
1/20/2026Perpetual Ltd1,832,066$21M0.3%+1.6%0.269%Search for SEC Filing on Google Icon
1/16/2026Blue Trust Inc.16,671$0.19M0.0%-33.9%0.002%Search for SEC Filing on Google Icon
1/15/2026Burns Matteson Capital Management LLC46,407$0.53M0.2%N/A0.007%Search for SEC Filing on Google Icon
1/15/2026Retirement Systems of Alabama818,287$9.38M0.0%-0.7%0.120%Search for SEC Filing on Google Icon
1/15/2026Pacific Capital Partners Ltd424,520$4.87M5.2%-16.0%0.062%Search for SEC Filing on Google Icon
1/12/2026Castleview Partners LLC10,199$0.12M0.1%-18.4%0.001%Search for SEC Filing on Google Icon
1/12/2026First Bank & Trust20,518$0.24M0.0%+8.7%0.003%Search for SEC Filing on Google Icon
1/12/2026Balefire LLC141,136$1.62M0.3%-12.4%0.021%Search for SEC Filing on Google Icon
1/12/2026Legacy Wealth Asset Management LLC37,081$0.43M0.1%-11.9%0.005%Search for SEC Filing on Google Icon
1/12/2026Salem Investment Counselors Inc.55,862$0.64M0.0%-5.8%0.008%Search for SEC Filing on Google Icon
1/9/2026SG Americas Securities LLC401,969$4.61M0.0%+209.5%0.059%Search for SEC Filing on Google Icon
1/9/2026Assenagon Asset Management S.A.3,620,455$41.49M0.1%N/A0.531%Search for SEC Filing on Google Icon
1/9/2026Dynamic Advisor Solutions LLC34,796$0.40M0.0%-5.6%0.005%Search for SEC Filing on Google Icon
1/8/2026Wealth Enhancement Advisory Services LLC26,661$0.33M0.0%+36.5%0.004%Search for SEC Filing on Google Icon
1/7/2026Greenhaven Associates Inc.20,500,653$234.94M3.8%+12.0%3.007%Search for SEC Filing on Google Icon
1/5/2026GAMMA Investing LLC8,527$98K0.0%+23.2%0.001%Search for SEC Filing on Google Icon
1/1/2026JPMorgan Chase & Co.1,806,512$22.55M0.0%+5.3%0.265%Search for SEC Filing on Google Icon
12/18/2025AIA Group Ltd56,756$0.71M0.0%N/A0.008%Search for SEC Filing on Google Icon
12/2/2025Swiss Life Asset Management Ltd32,023$0.40M0.0%-69.8%0.005%Search for SEC Filing on Google Icon
11/24/2025Manhattan West Asset Management LLC223,392$2.79M0.6%+65.3%0.033%Search for SEC Filing on Google Icon
11/20/2025Voss Capital LP4,525,000$56.47M2.7%+905.6%0.664%Search for SEC Filing on Google Icon
11/19/2025Coldstream Capital Management Inc.13,770$0.17M0.0%N/A0.002%Search for SEC Filing on Google Icon
11/19/2025Danica Pension Livsforsikringsaktieselskab63,072$0.79M0.0%N/A0.009%Search for SEC Filing on Google Icon
11/19/2025Danske Bank A S6,800$85K0.0%N/A0.001%Search for SEC Filing on Google Icon
11/19/2025Caitong International Asset Management Co. Ltd14,682$0.18M0.1%+217.9%0.002%Search for SEC Filing on Google Icon
11/18/2025Advisory Services Network LLC22,764$0.28M0.0%+36.6%0.003%Search for SEC Filing on Google Icon
11/17/2025Armistice Capital LLC25,360$0.32M0.0%N/A0.004%Search for SEC Filing on Google Icon
11/17/2025CANADA LIFE ASSURANCE Co430,201$5.09M0.0%-14.4%0.063%Search for SEC Filing on Google Icon
11/17/2025Woodline Partners LP1,628,501$20.32M0.1%-56.8%0.239%Search for SEC Filing on Google Icon
11/17/2025XTX Topco Ltd143,973$1.80M0.1%N/A0.021%Search for SEC Filing on Google Icon
11/17/2025Voleon Capital Management LP10,402$0.13M0.0%N/A0.002%Search for SEC Filing on Google Icon
11/17/2025Verition Fund Management LLC362,391$4.52M0.0%-14.3%0.053%Search for SEC Filing on Google Icon
11/17/2025Sapience Investments LLC43,560$0.54M2.1%+20.4%0.006%Search for SEC Filing on Google Icon
11/17/2025Scientech Research LLC53,529$0.67M0.2%-19.1%0.008%Search for SEC Filing on Google Icon
11/17/2025Shelton Capital Management16,295$0.20M0.0%-33.3%0.002%Search for SEC Filing on Google Icon
11/17/2025Quarry LP3,858$48K0.0%-49.0%0.001%Search for SEC Filing on Google Icon
11/17/2025Prelude Capital Management LLC17,000$0.21M0.0%N/A0.002%Search for SEC Filing on Google Icon
11/17/2025Public Employees Retirement System of Ohio206,386$2.58M0.0%+0.6%0.030%Search for SEC Filing on Google Icon
11/17/2025Northern Trust Corp5,561,017$69.40M0.0%-14.6%0.816%Search for SEC Filing on Google Icon
11/17/2025Mercer Global Advisors Inc. ADV80,592$1.01M0.0%+3.6%0.012%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC2,702,510$33.73M0.0%+20,885.5%0.396%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.4,123$49K0.0%+28.1%0.001%Search for SEC Filing on Google Icon
11/17/2025Moore Capital Management LP293,594$3.66M0.1%-62.3%0.043%Search for SEC Filing on Google Icon
11/17/2025London Co. of Virginia12,793,957$159.67M0.9%N/A1.876%Search for SEC Filing on Google Icon
11/17/2025Jain Global LLC38,768$0.48M0.0%N/A0.006%Search for SEC Filing on Google Icon
11/17/2025Kinney Asset Management LLC1,845,000$23.03M34.3%+34.2%0.271%Search for SEC Filing on Google Icon
11/17/2025HighVista Strategies LLC172,400$2.15M0.5%N/A0.025%Search for SEC Filing on Google Icon
11/17/2025Holocene Advisors LP5,493,677$68.56M0.2%+278.0%0.806%Search for SEC Filing on Google Icon
11/17/2025Gotham Asset Management LLC1,047,534$13.07M0.1%+99.4%0.154%Search for SEC Filing on Google Icon
11/17/2025Dean Capital Management92,349$1.15M0.4%N/A0.014%Search for SEC Filing on Google Icon
11/17/2025Earnest Partners LLC6,196,712$77.34M0.3%+1.6%0.909%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP25,236$0.32M0.0%N/A0.004%Search for SEC Filing on Google Icon
11/17/2025California Public Employees Retirement System934,521$11.66M0.0%+0.6%0.137%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE6,969,143$86.98M0.0%-7.0%1.022%Search for SEC Filing on Google Icon
11/17/2025Bank of Nova Scotia31,474$0.39M0.0%-47.9%0.005%Search for SEC Filing on Google Icon
11/17/2025Alliancebernstein L.P.858,525$10.71M0.0%-1.1%0.126%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.1,499,771$18.72M0.0%-4.9%0.220%Search for SEC Filing on Google Icon
11/14/2025Schonfeld Strategic Advisors LLC300,029$3.74M0.0%+242.4%0.044%Search for SEC Filing on Google Icon
11/14/2025Creative Planning77,760$0.97M0.0%+38.8%0.011%Search for SEC Filing on Google Icon
11/14/2025Lazard Asset Management LLC232,762$2.91M0.0%-8.6%0.034%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Avantor logo
Avantor, Inc. engages in the provision of mission-critical products and services to customers in the biopharma, healthcare, education and government, advanced technologies, and applied materials industries in the Americas, Europe, Asia, the Middle East, and Africa. The company offers materials and consumables, such as purity chemicals and reagents, lab products and supplies, formulated silicone materials, customized excipients, customized single-use assemblies, process chromatography resins and columns, analytical sample prep kits, education and microbiology products, clinical trial kits, peristaltic pumps, and fluid handling tips. It also provides equipment and instrumentation products, including filtration systems, virus inactivation systems, incubators, analytical instruments, evaporators, ultra-low-temperature freezers, biological safety cabinets, and critical environment supplies. In addition, the company offers services and specialty procurements comprising onsite lab and production, clinical, equipment, procurement and sourcing, and biopharmaceutical material scale-up and development services. Further, it provides scientific research support services, such as DNA extraction, bioreactor servicing, clinical and biorepository, and compound management services. The company was founded in 1904 and is headquartered in Radnor, Pennsylvania.
Read More on Avantor

Today's Range

Now: $11.08
Low: $10.79
High: $11.10

50 Day Range

MA: $11.57
Low: $10.65
High: $12.59

52 Week Range

Now: $11.08
Low: $10.62
High: $22.44

Volume

10,137,563 shs

Average Volume

11,999,047 shs

Market Capitalization

$7.55 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

0.94

Who are the company insiders with the largest holdings of Avantor?

Avantor's top insider shareholders include:
  1. Sanjeev K Mehra (Director)
  2. Gregory L Summe (Director)
  3. James Bramwell (EVP)
  4. Steven W Eck (CAO)
  5. Joseph R Massaro (Director)
Learn More about top insider investors at Avantor.

Who are the major institutional investors of Avantor?

Avantor's top institutional shareholders include:
  1. Vanguard Group Inc. — 9.52%
  2. Greenhaven Associates Inc. — 3.01%
  3. Massachusetts Financial Services Co. MA — 1.06%
  4. Assenagon Asset Management S.A. — 0.53%
  5. Perpetual Ltd — 0.27%
  6. Retirement Systems of Alabama — 0.12%
Learn More about top institutional investors of Avantor stock.

Which major investors are selling Avantor stock?

Within the previous quarter, AVTR stock was sold by these institutional investors:
  1. Vanguard Group Inc.
  2. Lightrock Netherlands B.V.
  3. Massachusetts Financial Services Co. MA
  4. Whittier Trust Co.
  5. Comerica Bank
  6. Whittier Trust Co. of Nevada Inc.
  7. Pacific Capital Partners Ltd
  8. B. Metzler seel. Sohn & Co. AG
Within the previous year, company insiders that have sold Avantor company stock include:
  1. Sanjeev K Mehra (Director)
  2. Gregory L Summe (Director)
Learn More investors selling Avantor stock.

Which major investors are buying Avantor stock?

During the previous quarter, AVTR stock was acquired by institutional investors including:
  1. Assenagon Asset Management S.A.
  2. Greenhaven Associates Inc.
  3. SG Americas Securities LLC
  4. AMG National Trust Bank
  5. Zurcher Kantonalbank Zurich Cantonalbank
  6. Universal Beteiligungs und Servicegesellschaft mbH
  7. Oak Thistle LLC
  8. Burns Matteson Capital Management LLC
In the last year, these company insiders have bought Avantor stock:
  1. Sanjeev K Mehra (Director)
  2. Gregory L Summe (Director)
  3. James Bramwell (EVP)
Learn More investors buying Avantor stock.