As February 2026 begins, U.S. stock markets are experiencing a robust start with major indices like the Dow Jones and S&P 500 posting significant gains, despite recent economic uncertainties such as government shutdowns and trade negotiations. In this invigorated market environment, investors often look for growth companies with high insider ownership as these stocks can indicate confidence from those closest to the company's operations and strategy.

Top 10 Growth Companies With High Insider Ownership In The United States

Name	Insider Ownership	Earnings Growth
Upstart Holdings (UPST)	12.5%	51.5%
StubHub Holdings (STUB)	22.3%	59.8%
SES AI (SES)	12.2%	68.9%
QT Imaging Holdings (QTI)	22.8%	93.3%
Karman Holdings (KRMN)	17.3%	62%
FirstSun Capital Bancorp (FSUN)	37.1%	45%
EHang Holdings (EH)	27.8%	66.6%
Atour Lifestyle Holdings (ATAT)	17.5%	24.3%
Astera Labs (ALAB)	10.4%	29.0%
AppLovin (APP)	27.4%	21%

Let's take a closer look at a couple of our picks from the screened companies.

ASP Isotopes (ASPI)

Simply Wall St Growth Rating: ★★★★★☆

Overview: ASP Isotopes Inc. is a development stage advanced materials company focused on producing, distributing, marketing, and selling isotopes, with a market cap of $653.07 million.

Operations: The company generates revenue from Specialist Isotopes and Related Services amounting to $4.56 million.

Insider Ownership: 13.7%

Revenue Growth Forecast: 52.2% p.a.

ASP Isotopes demonstrates potential as a growth company with significant insider ownership, although recent substantial insider selling may raise concerns. The company's revenue is forecasted to grow rapidly at 52.2% annually, outpacing the US market average. Recent strategic moves include acquiring Renergen Limited and advancing the Renergen Helium Project, expected to achieve positive cash flow by year-end 2026. Despite past shareholder dilution and volatile share prices, ASP Isotopes remains focused on expanding its isotope production capabilities across various sectors.

Harrow (HROW)

Simply Wall St Growth Rating: ★★★★★☆

Overview: Harrow, Inc. is an eyecare pharmaceutical company focused on the discovery, development, and commercialization of ophthalmic pharmaceutical products with a market cap of $1.77 billion.

Operations: The company generates revenue through its Branded segment, which accounts for $167.97 million, and its Compounding segment, contributing $82.07 million.

Insider Ownership: 16.2%

Revenue Growth Forecast: 26.7% p.a.

Harrow's strong insider ownership aligns with its growth trajectory, as the company anticipates a 26.7% annual revenue increase, surpassing the US market average. The recent launch of PharmaPack expands Harrow's ophthalmic offerings, promising transparent pricing and reduced regulatory risks. Despite trading below fair value estimates by 84.9%, analysts expect a significant stock price rise of 39.7%. Harrow is forecasted to achieve profitability within three years, marking above-average market growth potential.

Chemung Financial (CHMG)

Simply Wall St Growth Rating: ★★★★☆☆

Overview: Chemung Financial Corporation is a bank holding company for Chemung Canal Trust Company, offering a variety of banking, financing, fiduciary, and financial services with a market cap of $284.02 million.

Operations: Chemung Canal Trust Company, under the umbrella of Chemung Financial Corporation, delivers a diverse array of services including banking, financing, and fiduciary offerings.

Insider Ownership: 20%

Revenue Growth Forecast: 18.5% p.a.

Chemung Financial's insider ownership supports its growth potential, with earnings projected to increase significantly at 41.2% annually, outpacing the US market. Despite recent insider selling and a drop in profit margins from 24.3% to 16.7%, the company trades at a 38% discount to estimated fair value. Recent buybacks and consistent dividends of $0.34 per share highlight shareholder commitment, while revenue is expected to grow faster than the market at 18.5%.

Summing It All Up

• Get an in-depth perspective on all 205 Fast Growing US Companies With High Insider Ownership by using our screener here.
• Searching for a Fresh Perspective? We've found 10 US stocks that are forecast to pay a dividend yeild of over 6% next year. See the full list for free.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.The analysis only considers stock directly held by insiders. It does not include indirectly owned stock through other vehicles such as corporate and/or trust entities. All forecast revenue and earnings growth rates quoted are in terms of annualised (per annum) growth rates over 1-3 years.