AVTR (Avantor) Insider Ownership: 1.14 % (As of Aug. 23, 2026)

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Director of Data and Quant Analytics at GuruFocus
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Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

AVTR Avantor Inc AVTR
70 GF Score
Price $14.46
GF Value $16.85
Valuation Modestly Undervalued
! 7 Warning Signs
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What is Avantor Insider Ownership?

Avantor AVTR +1.47% 70 Insider Ownership is 1.14 % as of Aug. 23, 2026. GuruFocus rates AVTR with a GF Score™ of 70/100 and a GF Value™ of $16.85 (Modestly Undervalued). The stock has 7 warning signs investors should review.

Insider ownership is the percentage of shares that are owned by company insiders relative to the total shares outstanding. As of today, Avantor's insider ownership is 1.14%.

Institutional Ownership is the percentage of shares that are owned by institutions out of the total shares outstanding. As of today, Avantor's Institutional Ownership is 100.32%.

Float Percentage Of Total Shares Outstanding is the percentage of float shares relative to the total shares outstanding. As of today, Avantor's Float Percentage Of Total Shares Outstanding is 82.36%.

Avantor Insider Ownership Historical Data

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The historical data trend for Avantor's Insider Ownership can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Avantor Insider Ownership Chart

Avantor Historical Data

The historical data trend for Avantor can be seen below:

2025-07-31 2025-08-31 2025-09-30 2025-10-31 2025-11-30 2026-01-31 2026-02-28 2026-05-31 2026-06-30 2026-07-31
Insider Ownership 0.82 0.86 0.86 0.86 0.88 0.88 1.08 1.13 1.13 1.14
AVTR
70GF Score
Avantor Inc AVTR
Insider Ownership is just one metric. See GF Score™, valuation, warning signs, and more.
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Avantor Insider Ownership Calculation

The percentage of shares that are owned by company insiders relative to the total shares outstanding.

Frequently Asked Questions Learn more about Insider Ownership →
What does a Insider Ownership of 1.14 % mean?
Avantor (AVTR) has a Insider Ownership of 1.14 % as of Aug. 23, 2026. Insider ownership equals the percent of shares owned by company insiders relative to total shares. View historical data on Avantor and its competitors.
Is Avantor's Insider Ownership too high?
Avantor's current Insider Ownership is 1.14 %. Overall, Avantor has a GF Score™ of 70/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Avantor's Insider Ownership compare to RGEN and ATR?
Avantor's Insider Ownership of 1.14 % can be compared against companies in the Medical Devices & Instruments industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Insider Ownership for a Medical Devices & Instruments company?
A good Insider Ownership depends on the Medical Devices & Instruments industry context. However, Insider Ownership should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Insider Ownership mean?
A high Insider Ownership can signal that a stock is expensive relative to its fundamentals. Insider ownership equals the percent of shares owned by company insiders relative to total shares. View historical data on Avantor and its competitors. Avantor's current Insider Ownership is 1.14 %. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Avantor stock overvalued right now?
Based on GuruFocus' analysis, Avantor (AVTR) is currently considered Modestly Undervalued. The stock's GF Value™ is $16.85, compared to a current price of $14.46 — trading 14.2% below its estimated fair value. The current Insider Ownership is 1.14 %. Avantor's overall GF Score™ is 70/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Insider Ownership calculated?
Insider Ownership is calculated from a company's financial statements. For Avantor (AVTR), the current Insider Ownership is 1.14 % as of Aug. 23, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Avantor (AVTR) Overvalued in 2026?

Based on GuruFocus' analysis, Avantor stock appears to be undervalued. The current stock price of $14.46 is trading 14.2% below its estimated GF Value™ of $16.85. GuruFocus considers Avantor to be Modestly Undervalued.

Key valuation signals for AVTR:

  • Insider Ownership: 1.14 %
  • GF Value™: $16.85 vs. price of $14.46 (14.2% below fair value)
  • GF Score™: 70/100 with 7 warning signs

No single metric tells the full story. See the AVTR stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Avantor Business Description

Other Exchanges AVG:GermanyAVTR:Austria
Address 100 Matsonford Road, Suite 200, Building One, Radnor Corporate Center, Radnor, PA, USA, 19087
Avantor Inc provides products and services to customers in the biopharma, healthcare, education & government, and advanced technologies & applied materials industries. The company operates through two segments: Laboratory Solutions and Bioscience Production. It offers materials & consumables, equipment & instrumentation, and services & specialty procurement. Product groups include Equipment & Instrumentation, Services & Specialty Procurement, Proprietary Materials & Consumables, and Third-Party Materials & Consumables. Materials & consumables include high-purity chemicals and reagents, lab supplies, customized excipients, single-use assemblies, chromatography products, sample preparation kits, and fluid handling solutions. It operates in the Americas, Europe, and AMEA.
70GF Score

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Insider Ownership is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$14.46
Price
$16.85
GF Value