Looking back on industrial & environmental services stocks’ Q4 earnings, we examine this quarter’s best and worst performers, including Tetra Tech (NASDAQ: TTEK) and its peers.

Growing regulatory pressure on environmental compliance and increasing corporate ESG commitments should buoy the sector for years to come. On the other hand, environmental regulations continue to evolve, and this may require costly upgrades, volatility in commodity waste and recycling markets, and labor shortages in industrial services. As for digitization, a theme that is impacting nearly every industry, the increasing use of data, analytics, and automation will give rise to improved efficiency of operations. Conversely, though, the benefits of digitization also come with challenges of integrating new technologies into legacy systems.

The 7 industrial & environmental services stocks we track reported a mixed Q4. As a group, revenues beat analysts’ consensus estimates by 1.8% while next quarter’s revenue guidance was in line.

In light of this news, share prices of the companies have held steady. On average, they are relatively unchanged since the latest earnings results.

Best Q4: Tetra Tech (NASDAQ: TTEK)

With a 50-year legacy of "Leading with Science" and operations on all seven continents, Tetra Tech (NASDAQ: TTEK) provides high-end consulting and engineering services focused on water management, environmental solutions, and sustainable infrastructure for government and commercial clients worldwide.

Tetra Tech reported revenues of $1.04 billion, down 13.4% year on year. This print exceeded analysts’ expectations by 6.4%. Overall, it was a strong quarter for the company with a beat of analysts’ EPS estimates and an impressive beat of analysts’ revenue estimates.

Dan Batrack, Chairman and CEO, commented, “Tetra Tech began fiscal 2026 with a strong first quarter as net revenue was up 8% and EPS up 17%. Subsequent to the first quarter, we announced two strategic acquisitions, further expanding our front-end consulting business for our defense clients. As expected, our margin increased by 80 basis points, with our higher margin front-end advisory and technical consulting business growing at a double-digit rate. With the promotion of Roger Argus to CEO effective after our annual shareholders meeting, I see continued progress toward achieving our 2030 vision and direction and the associated financial targets.”

Tetra Tech scored the biggest analyst estimates beat but had the slowest revenue growth and slowest revenue growth of the whole group. Investor expectations, however, were likely higher than Wall Street’s published projections, leaving some wishing for even better results (analysts’ consensus estimates are those published by big banks and advisory firms, not the investors who make buy and sell decisions). The stock is down 10.6% since reporting and currently trades at $33.17.

We think Tetra Tech is a good business, but is it a buy today? Read our full report here, it’s free.

Pitney Bowes (NYSE: PBI)

With a century-long history dating back to 1920 and processing over 15 billion pieces of mail annually, Pitney Bowes (NYSE: PBI) provides shipping, mailing technology, logistics, and financial services to businesses of all sizes.

Pitney Bowes reported revenues of $477.6 million, down 7.5% year on year, falling short of analysts’ expectations by 1.2%. However, the business still had a strong quarter with a beat of analysts’ EPS estimates and a solid beat of analysts’ full-year EPS guidance estimates.

The market seems content with the results as the stock is up 4.3% since reporting. It currently trades at $10.68.

Is now the time to buy Pitney Bowes? Access our full analysis of the earnings results here, it’s free.

Vestis (NYSE: VSTS)

Operating a network of more than 350 facilities with 3,300 delivery routes serving customers weekly, Vestis (NYSE: VSTS) provides uniform rentals, workplace supplies, and facility services to over 300,000 business locations across the United States and Canada.

Vestis reported revenues of $663.4 million, down 3.2% year on year, in line with analysts’ expectations. It was a softer quarter as it posted EPS in line with analysts’ estimates and revenue in line with analysts’ estimates.

Interestingly, the stock is up 6.5% since the results and currently trades at $7.79.

Read our full analysis of Vestis’s results here.

UniFirst (NYSE: UNF)

With a fleet of trucks making weekly deliveries to over 300,000 customer locations, UniFirst (NYSE: UNF) provides, rents, cleans, and maintains workplace uniforms and protective clothing for businesses across various industries.

UniFirst reported revenues of $621.3 million, up 2.7% year on year. This number topped analysts’ expectations by 1%. Taking a step back, it was a slower quarter as it logged a significant miss of analysts’ EPS estimates and full-year revenue guidance meeting analysts’ expectations.

The stock is up 30.6% since reporting and currently trades at $265.41.

Read our full, actionable report on UniFirst here, it’s free.

ABM (NYSE: ABM)

With roots dating back to 1909 as a window washing company, ABM Industries (NYSE: ABM) provides integrated facility management, infrastructure, and mobility solutions across various sectors including commercial, manufacturing, education, and aviation.

ABM reported revenues of $2.24 billion, up 6.1% year on year. This result surpassed analysts’ expectations by 2.1%. More broadly, it was a mixed quarter as it also produced an impressive beat of analysts’ organic revenue estimates but a significant miss of analysts’ EPS estimates.

The stock is down 5.2% since reporting and currently trades at $41.04.

Read our full, actionable report on ABM here, it’s free.

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