Tetra Tech closed fiscal 2026 with a clean beat. Adjusted EPS of $0.49 topped the $0.47 consensus by 4.3% and grew 8.9% year over year. It also cleared the company's own $0.45-$0.48 fourth-quarter guide, and GAAP EPS reached a record $0.51. The more important development sits beneath the earnings line. Funded backlog climbed 13% to $4.67 billion, the third straight quarter above a 1.1x book-to-bill. Management, however, translated that order momentum into an FY27 outlook calling for only mid-single-digit growth. That is the central tension: the business is booking faster than it is guiding to grow.

The revenue comparison deserves scrutiny. Reported revenue of $1.337 billion beat the $1.14 billion consensus by 17.3%, but it grew just 0.5% year over year. The consensus figure sits much closer to the $1.15 billion of net revenue, after subcontractor costs, that Tetra Tech emphasizes. Much of the apparent revenue beat therefore likely reflects a gross-versus-net basis difference rather than a true top-line blowout. On the company's preferred measure, net revenue rose 5% excluding episodic disaster response. That is steady, not spectacular. Profitability was the real story:

• Adjusted EBITDA reached $194 million, with margin up 90 basis points.
• Full-year adjusted EBITDA margin hit 15.2%, ahead of the roughly 70-basis-point expansion guided on the prior two calls.
• Segment margins stepped up every quarter. GSG went from 16.3% to 17.5% to 18.8%. CIG went from 12.2% to 15.1% to 16.2%.

The call preserved a credible growth story while quietly lowering several end-market expectations. U.S. commercial turned decisively, moving from -2% in Q2 and +1% in Q3 to +6% in Q4. Management now looks for about 10% growth there in FY27, citing data centers, power transmission and mining. Federal capacity expanded meaningfully with:

• a $1.4 billion NASA blanket purchase agreement;
• a $145 million Navy contract;
• more than $220 million of EPA awards;
• new NOAA and USACE vehicles.

Against that, nearly every end-market outlook was trimmed:

• **U.S. state and local** is now guided flat for FY27, versus 10-15% framed early in FY26 and 5-10% in Q2. A quiet hurricane season reduced federally funded disaster-preparedness work.
• **U.S. federal** is pegged near 5%, versus 8-12% for the second half.
• **International** sits at about 5%, the bottom of the prior range. Q4 international growth slowed to 3% from 12% in Q3.
• **CIG** revenue growth decelerated to 3% from 9%.

The guidance itself is best described as in line. FY27 EPS of $1.65-$1.80 brackets modest growth over the $1.60 adjusted FY26 result, and net revenue of $4.425-$4.625 billion implies roughly 4-5% expansion. Management attributes the gap between 13% backlog growth and mid-single-digit revenue growth to multi-year awards and slow ramp timing. That explanation is plausible but unproven. Bears have legitimate ammunition elsewhere too:

• Days sales outstanding drifted to 60 from 51 in Q1.
• Leverage rose to 1.0x from 0.88x.
• Operating cash flow growth cooled to 14% for the year, from 31% year-to-date at Q3.
• Ukraine and State Department work is no longer broken out, reducing visibility.
• Offshore wind and renewables remain blocked.
• Proposed cuts to state revolving fund co-funding loom over water spending.

On the catalyst side, management struck a noticeably more confident tone than on the Q3 call, which had flagged federal procurement bottlenecks and client trepidation. Management framed the midterm outcome as a long-term positive for water and environmental funding, though not before the second half of FY27. Additional demand drivers cited on the call:

• Canadian infrastructure funding projected to roughly double to C$73.7 billion by FY28.
• U.S. critical-minerals incentives.
• A rising Australian defense budget.

Capital return is also accelerating. The company repurchased $300 million of stock in FY26, lifted available authorization to $798 million from $398 million, and raised the dividend 11%.

Investor sentiment improved meaningfully into the report, rising from -0.47 to -0.28, but it remains negative. The market has been warming to the margin story without fully embracing it. The tape tells a similar story. Shares at $37.61 are up 7.6% since the open following the July report and sit about 13% above the 200-day moving average of $33.22. Earnings Whispers price and AVWAP trend readings are both positive. Skeptical sentiment and a constructive chart point to a stock where expectations have improved but are not stretched.

The bottom line is that Tetra Tech delivered a high-quality quarter on margins, earnings and orders. The headline revenue beat, however, owes more to reporting basis than to top-line acceleration, and the FY27 outlook embeds a broad step-down in end-market growth expectations. The investment case now rests on whether a 13% larger backlog, a resurgent commercial business and further margin expansion can outrun flat state and local work and slower international growth. The coming quarters' ramp of the NASA and other federal awards, along with the trend in DSO, will determine whether the cautious guide proves conservative or accurate.