In the last week, the United States market has stayed flat, but it has shown a robust 29% rise over the past 12 months with earnings forecasted to grow by 16% annually. In this environment, identifying small-cap stocks that are potentially undervalued and exhibit insider buying can offer intriguing opportunities for investors looking to capitalize on growth prospects.

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

Name	PE	PS	Discount to Fair Value	Value Rating
Financial Institutions	8.7x	2.8x	49.61%	★★★★★☆
Ferroglobe	NA	0.6x	45.31%	★★★★★☆
1st Source	11.1x	4.2x	42.00%	★★★★☆☆
Aldeyra Therapeutics	NA	NA	49.64%	★★★★☆☆
Metropolitan Bank Holding	12.7x	3.6x	42.32%	★★★☆☆☆
Tennant	34.1x	1.2x	38.10%	★★★☆☆☆
German American Bancorp	12.0x	4.4x	46.07%	★★★☆☆☆
Eagle Financial Services	10.6x	2.5x	32.40%	★★★☆☆☆
Union Bankshares	10.3x	2.1x	22.81%	★★★☆☆☆
New Peoples Bankshares	9.4x	2.2x	25.73%	★★★☆☆☆

Click here to see the full list of 59 stocks from our Undervalued US Small Caps With Insider Buying screener.

We’ll examine a selection from our screener results.

TriMas

Simply Wall St Value Rating: ★★★☆☆☆

Overview: TriMas is a diversified manufacturer of engineered products serving various industries, with a market capitalization of approximately $1.25 billion.

Operations: TriMas generates revenue primarily through its sales, with recent quarterly figures showing revenue of $973.84 million and $1.01 billion. The company’s cost structure includes significant expenses such as the cost of goods sold (COGS), which was $753.85 million in one quarter, and operating expenses, including general and administrative costs that reached up to $138.95 million in another period. Gross profit margin has shown variation over time, with a recent figure reported at 23.10%. Net income has fluctuated significantly, reflecting various non-operating expenses impacting profitability across different periods.

PE: 19.3x

TriMas, a smaller company in the U.S., has shown mixed financial signals. Recent Q1 2026 earnings reported sales of US$168.28 million, up from US$152.46 million last year, yet net income soared to US$800.83 million due to significant one-off items impacting results. The company’s confidence is evident with insider purchases and a completed share repurchase plan totaling 22.81% of shares for US$285.69 million by end-2025, signaling potential value recognition despite high-risk external borrowing reliance for funding needs.

• Unlock comprehensive insights into our analysis of TriMas stock in this valuation report.

• Review our historical performance report to gain insights into TriMas”s past performance.

TRS Share price vs Value as at May 2026Arbor Realty Trust

Simply Wall St Value Rating: ★★★☆☆☆

Overview: Arbor Realty Trust is a real estate investment trust that specializes in originating and servicing loans for multifamily, single-family rental, and commercial real estate markets with a market cap of approximately $2.56 billion.

Operations: The company’s revenue is primarily derived from its Agency Business and Structured Business segments. The gross profit margin has shown a notable trend, reaching 92.28% in September 2023. Operating expenses, including general and administrative costs, significantly impact the overall financial performance, with recent figures showing an increase to $257.50 million by September 2025.

PE: 14.1x

Arbor Realty Trust, a small US real estate investment trust, showcases potential value with insider confidence evident from recent share purchases. Despite a dip in net income to US$148.8 million for 2025 from the previous year and impairment charges of US$20.5 million, Arbor’s strategic moves like a US$762.6 million securitization aim to bolster its financial footing. The appointment of experienced executives further strengthens its operational capabilities, hinting at promising future growth in the commercial real estate sector.

• Get an in-depth perspective on Arbor Realty Trust’s performance by reading our valuation report here.

• Evaluate Arbor Realty Trust’s historical performance by accessing our past performance report.

ABR Share price vs Value as at May 2026FMC

Simply Wall St Value Rating: ★★★☆☆☆

Overview: FMC is a global agricultural sciences company that provides innovative solutions for crop protection, plant health, and professional pest control, with a market cap of approximately $12.60 billion.

Operations: FMC’s revenue is primarily derived from its sales, with recent figures showing a decline to $3.43 billion as of March 2026. The company’s cost structure includes significant expenses such as COGS, which was $2.33 billion in the same period, and operating expenses totaling $942.2 million. Notably, FMC’s net income margin has experienced volatility, reaching -71.52% by March 2026 due to substantial non-operating expenses amounting to $2.62 billion during this timeframe.

PE: -0.8x

FMC, a company in the specialty chemicals industry, recently faced financial challenges with a net loss of US$281 million for Q1 2026. Despite this, insider confidence is evident as Independent Director Michael Barry purchased shares worth approximately US$250,000 in February 2026. This move suggests potential value recognition amidst ongoing strategic initiatives like debt restructuring and product innovation. With regulatory approval for Isoflex active in the EU and plans for further launches by 2027, FMC aims to enhance its growth trajectory while exploring strategic options to bolster shareholder value.

• Take a closer look at FMC’s potential here in our valuation report.

• Examine FMC’s past performance report to understand how it has performed in the past.

FMC Ownership Breakdown as at May 2026Turning Ideas Into Actions

• Unlock more gems! Our Undervalued US Small Caps With Insider Buying screener has unearthed 56 more companies for you to explore.Click here to unveil our expertly curated list of 59 Undervalued US Small Caps With Insider Buying.
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Interested In Other Possibilities?

• Explore high-performing small cap companies that haven’t yet garnered significant analyst attention.
• Fuel your portfolio with companies showing strong growth potential, backed by optimistic outlooks both from analysts and management.
• Find companies with promising cash flow potential yet trading below their fair value.

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.

Companies discussed in this article include TRS ABR and FMC.

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