In the last week, the United States market has been flat, but over the past 12 months, it has experienced a 15% rise with earnings forecasted to grow by 17% annually. In this environment, identifying stocks that are potentially undervalued with insider buying can be a strategic approach for investors looking to capitalize on growth opportunities within small-cap companies.

Top 10 Undervalued Small Caps With Insider Buying In The United States

Name	PE	PS	Discount to Fair Value	Value Rating
Appian	2119.4x	2.5x	31.83%	★★★★★☆
First Bancorp	10.4x	4.0x	32.18%	★★★★☆☆
Similarweb	NA	2.1x	20.19%	★★★★☆☆
Modiv Industrial	NA	3.9x	48.70%	★★★★☆☆
Bank of the James Financial Group	11.2x	2.4x	13.50%	★★★☆☆☆
Union Bankshares	9.0x	1.9x	16.44%	★★★☆☆☆
Patria Investments	24.3x	4.4x	8.69%	★★★☆☆☆
Shore Bancshares	12.1x	3.5x	7.30%	★★★☆☆☆
Angel Oak Mortgage REIT	14.0x	6.3x	20.53%	★★★☆☆☆
Angel Studios	NA	2.1x	4.61%	★★★☆☆☆

Here we highlight a subset of our preferred stocks from the screener.

Primis Financial (FRST)

Simply Wall St Value Rating: ★★★★★☆

Overview: Primis Financial is a financial services company that operates primarily in the banking sector, providing a range of banking and financial products, with a market cap of approximately $0.34 billion.

Operations: Primis Financial generates revenue primarily through its operations, with a notable gross profit margin of 100%. The company experiences varying net income margins, peaking at 34.71% in December 2018 and declining to -16.67% by December 2024. Operating expenses are a significant part of the cost structure, with general and administrative expenses being the largest component.

PE: 7.4x

Primis Financial, a smaller player in the financial sector, recently reported strong Q2 2026 results with net interest income of US$33.76 million, up from US$25.18 million the previous year. Despite this growth, earnings are projected to decline by 7.1% annually over the next three years. Insider confidence is evident as insiders have been purchasing shares since June 2026. Primis has maintained its dividend streak and was added to several Russell indexes in June 2026, signaling market recognition despite challenges such as low bad loan allowances at 68%.

Onterris (ONT)

Simply Wall St Value Rating: ★★★★★☆

Overview: Onterris operates in the measurement and analysis sector with a focus on segment adjustment, and has a market cap of $3.75 billion.

Operations: Onterris generates revenue primarily from its Segment Adjustment and Measurement and Analysis segments. The company's gross profit margin has shown an upward trend, reaching 41.19% as of June 2025. Operating expenses, including significant General & Administrative Expenses, impact its net income. Despite the rise in revenue to $830.54 million by December 2025, net income only turned positive in early 2026 with a margin of 0.54%.

PE: 162.2x

Onterris, a small company in the U.S., shows potential as an undervalued stock. They recently secured a multi-year AUD 6 million contract for environmental services in Australia, enhancing their industry position. Insider confidence is evident with Peter Graham purchasing 25,140 shares valued at US$432,156 in June 2026. Despite reporting a net loss of US$12.69 million for Q1 2026, they maintain revenue guidance between US$840 million and US$900 million for the year.

PAR Technology (PAR)

Simply Wall St Value Rating: ★★★★★☆

Overview: PAR Technology provides software, systems, and service solutions primarily for the restaurant and retail industries, with a market capitalization of approximately $1.53 billion.

Operations: PAR Technology generates revenue primarily from its restaurant and retail segments, with a recent gross profit margin of 43.67%. The company incurs costs of goods sold amounting to $267.92 million, alongside operating expenses totaling $264.22 million, which include significant R&D and sales & marketing expenditures.

PE: -8.9x

PAR Technology, a smaller company in the U.S. market, presents an intriguing opportunity due to its recent partnerships and insider confidence. Notably, insiders have shown confidence by purchasing shares over the past few months. The company's technology is gaining traction with clients like Jacksons Food Stores and Bolla Oil Corporation, enhancing customer loyalty programs through PAR Retail's platform. Despite being dropped from several growth benchmarks on June 27, 2026, PAR's revenue increased to US$123.97 million for Q1 2026 compared to US$103.86 million a year ago, though it remains unprofitable with external borrowing as its primary funding source.

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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.