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Form 8-K

sec.gov

8-K — TETRA TECH INC

Accession: 0001104659-26-088213

Filed: 2026-07-29

Period: 2026-07-29

CIK: 0000831641

SIC: 8711 (SERVICES-ENGINEERING SERVICES)

Item: Results of Operations and Financial Condition

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — tm2621536d1_8k.htm (Primary)

EX-99.1 — EXHIBIT 99.1 (tm2621536d1_ex99-1.htm)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):

July 29, 2026

TETRA

TECH, INC.

(Exact name of registrant as specified in its

charter)

Delaware

0-19655

95-4148514

(State

or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification Number)

3475

East Foothill Boulevard, Pasadena,

California 91107

(Address of principal executive office, including zip code)

(626) 351-4664

(Registrant’s telephone number, including

area code)

Not Applicable

(Former name or former address, if changed since

last report)

Check the appropriate box below if the Form 8-K

filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written

communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting

material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement

communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement

communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b)

of the Act:

Title

of each class

Trading

symbol(s)

Name

of each exchange on which registered

Common

Stock, $0.01 par value

TTEK

The

Nasdaq Stock Market LLC

Indicate by check mark whether the registrant

is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2

of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging

Growth Company ¨

If

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02. Results of Operations and Financial Condition.

On July 29, 2026, Tetra Tech,

Inc. (“Tetra Tech”) reported its financial results for the third fiscal quarter ended June 28, 2026. A copy of the press release

is attached to this report as Exhibit 99.1.

Exhibit 99.1 attached hereto

shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be

deemed incorporated by reference in any filing under the Securities Act of 1933, as amended.

Item 8.01. Other Events.

On July 29, 2026, Tetra Tech

announced that its Board of Directors has declared a $0.072 per share quarterly cash dividend. The dividend is payable on August 27, 2026

to stockholders of record as of the close of business on August 13, 2026.

Item 9.01. Financial Statements and Exhibits.

(d)       Exhibits

99.1 Press Release, dated July 29, 2026, reporting the financial results for Tetra Tech’s third fiscal

quarter ended June 28, 2026, and the declaration of a quarterly cash dividend.

104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

2

SIGNATURES

Pursuant to the requirements

of the Securities Exchange Act of 1934, Tetra Tech has duly caused this report to be signed on its behalf by the undersigned hereunto

duly authorized.

TETRA TECH, INC.

Date: July 29, 2026

By:

/s/ ROGER R. ARGUS

Roger R. Argus

Chief Executive Officer and President

3

EX-99.1 — EXHIBIT 99.1

EX-99.1

Filename: tm2621536d1_ex99-1.htm · Sequence: 2

Exhibit 99.1

NEWS RELEASE

July 29, 2026

Tetra Tech Reports Strong Third Quarter 2026

Results

· Revenue $1.31 billion; Net Revenue $1.11 billion

· Operating Income $158 million; EBITDA $173 million

· EPS $0.42

· Backlog $4.49 billion, up 5% sequentially

· YTD performance drives increased FY26 guidance

Pasadena, California.

Tetra Tech, Inc. (NASDAQ: TTEK), a global provider of high-end technical and engineering services, Leading

with Science® in water, environment and sustainable infrastructure,

today announced results for the third quarter ended June 28, 2026.

Revenue and revenue,

net of subcontractor costs (net revenue)1, in the third quarter totaled $1.31 billion and $1.11 billion, respectively.

Net revenue increased 8% Y/Y excluding USAID / DOS and episodic disaster response. Operating income was $158 million, EBITDA1

was $173 million, and EPS was $0.42. Backlog was $4.49 billion at the end of the third quarter, up 5% sequentially. Cash from operations

was $229 million in the third quarter and $567 million over the trailing twelve months, resulting in a DSO of 56 days.

Recent Key Wins

· U.S. Army Corps of Engineers Norfolk District

multiple-award contract for engineering services

· U.S. Army Corps of Engineers Mobile District

multiple-award contract for water infrastructure

· U.S. EPA Office of Water single-award

water quality and ecological monitoring contract

· U.S. Federal Aviation Administration single-award

airspace redesign task order contract

· L.A. Department of Water & Power

multiple-award environmental and digital automation contract

· California Wastewater Authority digital

systems integration contract

· Scotland Excel engineering and technical

consultancy framework contract

· Chelan County Public Utility District hydropower

dam modernization contract

· City of Dayton Department of Water PFAS

water treatment design contract

· Hyperscale AI Data Center power system

digital automation and cybersecurity contract

1 Non-GAAP financial measures which the Company believes provide valuable perspectives on its business results.

Refer to Regulation G Information for reconciliations to the comparable GAAP metrics.

Executive Management Comments

Roger Argus, Chief Executive Officer, commented,

“We delivered a strong third quarter with growth primarily driven by U.S. federal and international end markets, both increasing

at a double-digit rate. We received significant new orders during the quarter, including commercial orders for data center and sediment

restoration projects, driving our backlog up by more than $200 million. The Company’s performance year-to-date resulted in our increasing

guidance for fiscal 2026.”

Steve Burdick, Chief Financial Officer, stated,

“Tetra Tech generated its strongest cash flow on record with $467 million from operations through the first three quarters of fiscal

2026. Our ability to consistently generate more cash than net income has allowed the Company to fund acquisitions, increase the stock

buybacks, and pay higher dividends, while still deleveraging our net debt.”

Quarterly Dividend and Share Repurchase Program

On July 27, 2026, Tetra Tech’s Board

of Directors approved a quarterly dividend in the amount of $0.072 per share, an 11% increase year-over-year, payable on August 27,

2026, to stockholders of record as of August 13, 2026. This is the 45th consecutive double-digit increase in the Company’s

quarterly dividend. In the third quarter of fiscal 2026, Tetra Tech repurchased $100 million of common stock. Additionally, as of June 28,

2026, the Company had $398 million remaining under its share repurchase program.

Nine-Month Results

Revenue for the nine-month period was $3.74 billion

and net revenue was $3.20 billion. Net revenue increased 8% Y/Y excluding USAID / DOS and episodic disaster response. Operating income

was $430 million, adjusted EBITDA was $466 million, and EPS was $1.18; cash flows generated from operations were $467 million.

Business Outlook

The following statements are based on current

expectations. These statements are forward-looking, and the actual results could differ materially. These statements do not include the

potential impact of transactions that may be completed or developments that become evident after the date of this release. The Business

Outlook section should be read in conjunction with the information on forward-looking statements at the end of this release.

For the fourth quarter of fiscal 2026, Tetra Tech

expects net revenue2 to range from $1.12 billion to $1.17 billion and EPS to range from $0.45 to $0.48. For fiscal 2026,

Tetra Tech is increasing adjusted EPS3 guidance to range from $1.56 to $1.59. Tetra Tech is narrowing the fiscal 2026 net

revenue range to $4.315 billion to $4.365 billion, which represents an increased midpoint for the year.

Webcast

Investors will have the opportunity to access

a live audio-visual webcast and supplemental financial information concerning the third quarter of fiscal 2026 results through a link

posted on the Company’s website at tetratech.com on July 30, 2026, at 8:00 a.m. (PT).

2 Reconciliation of the net revenue guidance to the most directly comparable GAAP measure is not available

without unreasonable efforts because the Company cannot predict the magnitude and timing of all the components, including subcontractor

costs, required to provide such reconciliation with sufficient precision.

3 The only adjustments in our guidance for EPS are to exclude the gain on business disposition and contingent

consideration in the first nine months of fiscal 2026.

About Tetra Tech

Tetra

Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects

worldwide. With more than 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading

with Science® to address the entire water cycle, protect and restore the environment, and design sustainable

and resilient infrastructure. For more information about Tetra Tech, please visit tetratech.com or follow us on LinkedIn

and Facebook.

CONTACTS:

Jim Wu, Investor Relations

Charlie MacPherson, Media & Public Relations

(626) 470-2844

Forward-Looking Statements

This release contains forward-looking statements

within the meaning of the Private Securities Litigation Reform Act of 1995. The use of words such as "anticipate," "expect,"

"could," "may," "intend," "plan" and "believe," among others, generally identify forward-looking

statements. These forward-looking statements are based on current expectations and beliefs of Tetra Tech’s management and currently

available operating, financial, economic and other information, and are subject to a number of risks and uncertainties. Readers are cautioned

that these forward-looking statements are only predictions and may differ materially from actual future events or results. A variety of

factors, many of which are beyond our control, could cause actual future results or events to differ materially from those projected in

the forward-looking statements in this release, including but not limited to: continuing worldwide political and economic uncertainties;

the U.S. Administration’s potential changes to fiscal policies; the cyclicality in demand for our overall services; the fluctuation

in demand for oil and gas, and mining services; risks related to international operations; concentration of revenues from U.S. government

agencies and potential funding disruptions by these agencies; dependence on winning or renewing U.S. government contracts; the delay or

unavailability of public funding on U.S. government contracts; the U.S. government’s right to modify, delay, curtail or terminate

contracts at its convenience; compliance with government procurement laws and regulations; the impact of global pandemics; credit risks

associated with certain clients in certain geographic areas or industries; acquisition strategy and integration risks; goodwill or other

intangible asset impairment; the failure to comply with worldwide anti-bribery laws; the failure to comply with domestic and international

export laws; the failure to properly manage projects; the loss of key personnel or the inability to attract and retain qualified personnel;

the ability of our employees to obtain government granted eligibility; the use of estimates and assumptions in the preparation of financial

statements; the ability to maintain adequate workforce utilization; the use of the percentage-of-completion method of accounting; the

inability to accurately estimate and control contract costs; the failure to adequately recover on our claims for additional contract costs;

the failure to win or renew contracts with private and public sector clients; growth strategy management; backlog cancellation and adjustments;

risks relating to cyber security breaches; the failure of partners to perform on joint projects; the failure of subcontractors to satisfy

their obligations; requirements to pay liquidated damages based on contract performance; the adoption of new legal requirements; changes

in resource management, environmental or infrastructure industry laws, regulations or programs; changes in bank and capital markets and

the access to capital; credit agreement covenants; industry competition; liability related to legal proceedings, investigations, and disputes;

the availability of third-party insurance coverage; the ability to obtain adequate bonding; employee, agent, or partner misconduct; employee

risks related to international travel; safety programs; conflict of interest issues; liabilities relating to reports and opinions; liabilities

relating to environmental laws and regulations; force majeure events; protection of intellectual property rights; stock price volatility;

the ability to impede a business combination based on Delaware law and charter documents; and other risks and uncertainties as may be

described in Tetra Tech’s periodic filings with the Securities and Exchange Commission, including those described in the “Risk

Factors” section of Tetra Tech’s Annual Report on Form 10-K for the fiscal year ended September 28, 2025. Readers

should not place undue reliance on forward-looking statements since such information speaks only as of the date of this release. Tetra

Tech does not intend to update forward-looking statements and expressly disclaims any obligation to do so.

Non-GAAP Financial Measures

To supplement the financial results presented

in accordance with generally accepted accounting principles in the United States (“GAAP”), we present certain non-GAAP financial

measures within the meaning of Regulation G under the Securities Exchange Act of 1934, as amended. We provide these non-GAAP financial

measures because we believe they provide a valuable perspective on our financial results. However, non-GAAP measures have limitations

as analytical tools and should not be considered in isolation and are not in accordance with, or a substitute for, GAAP measures. In addition,

other companies may define non-GAAP measures differently which limits the ability of investors to compare non-GAAP measures of Tetra Tech

to those used by our peer companies. A reconciliation of these non-GAAP financial measures to the most directly comparable GAAP financial

measures is set forth in this release.

Tetra Tech, Inc.

Balance Sheet - Unaudited

(unaudited - in thousands, except par value)

June 28,

September 28,

2026

2025

Assets

Current assets:

Cash and cash equivalents

$ 230,835

$ 167,459

Accounts receivable, net

1,076,473

1,158,928

Contract assets

152,610

138,232

Prepaid expenses and other current assets

120,395

98,768

Assets held-for-sale

-

57,502

Total current assets

1,580,313

1,620,889

Property and equipment, net

63,154

66,148

Right-of-use assets, operating leases

200,447

197,618

Goodwill

2,216,319

2,049,874

Intangible assets, net

123,590

121,160

Deferred tax assets

64,925

106,238

Other non-current assets

139,551

120,247

Total assets

$ 4,388,299

$ 4,282,174

Liabilities and Equity

Current liabilities:

Accounts payable

$ 220,639

$ 204,725

Accrued compensation

316,661

346,912

Contract liabilities

418,102

420,254

Short-term lease liabilities, operating leases

74,681

69,099

Current contingent earn-out liabilities

43,587

24,826

Liabilities held-for-sale

-

25,115

Other current liabilities

260,680

288,113

Total current liabilities

1,334,350

1,379,044

Deferred tax liabilities

21,831

21,333

Long-term debt

801,057

763,363

Long-term lease liabilities, operating leases

147,759

154,695

Non-current contingent earn-out liabilities

70,196

32,135

Other non-current liabilities

160,529

151,440

Total liabilities

2,535,722

2,502,010

Equity:

Preferred stock - authorized, 2,000 shares of $0.01 par value; no shares issued

and outstanding at June 28, 2026 and September 28, 2025

-

-

Common stock - authorized, 750,000 shares of $0.01 par value; issued and

outstanding, 256,044 and 261,418 shares at June 28, 2026 and September 28, 2025, respectively

2,560

2,614

Accumulated other comprehensive loss

(105,779 )

(95,777 )

Retained earnings

1,955,291

1,872,948

Tetra Tech stockholders' equity

1,852,072

1,779,785

Noncontrolling interests

505

379

Total stockholders' equity

1,852,577

1,780,164

Total liabilities and stockholders'

equity

$ 4,388,299

$ 4,282,174

Tetra Tech, Inc.

Consolidated Statements of Income

(unaudited - in thousands, except per share data)

Three Months Ended

Nine Months Ended

June 28,

June 29,

June 28,

June 29,

2026

2025

2026

2025

Revenue

$ 1,308,555

$ 1,369,816

$ 3,739,374

$ 4,112,490

Subcontractor costs

(199,996 )

(216,800 )

(544,007 )

(658,439 )

Other costs of revenue

(865,354 )

(901,477 )

(2,517,701 )

(2,766,854 )

Gross profit

243,205

251,539

677,666

687,197

Selling, general and administrative expenses

(85,203 )

(86,611 )

(254,653 )

(255,022 )

Legal contingency costs

-

-

-

(115,000 )

Contingent consideration - fair value adjustments

(77 )

58

7,429

2,355

Impairment of goodwill

-

-

-

(92,416 )

Income from operations

157,925

164,986

430,442

227,114

Interest expense, net

(7,158 )

(8,288 )

(23,124 )

(23,996 )

Other non-operating income

-

-

12,361

-

Income before income tax expense

150,767

156,698

419,679

203,118

Income tax expense

(40,966 )

(42,815 )

(110,858 )

(83,045 )

Net income

109,801

113,883

308,821

120,073

Net income attributable to noncontrolling interests

(217 )

(39 )

(586 )

(94 )

Net income attributable to Tetra Tech

$ 109,584

$ 113,844

$ 308,235

$ 119,979

Earnings per share attributable to Tetra Tech:

Basic

$ 0.42

$ 0.43

$ 1.19

$ 0.45

Diluted

$ 0.42

$ 0.43

$ 1.18

$ 0.45

Weighted-average common shares outstanding:

Basic

258,151

263,026

259,685

265,589

Diluted

259,779

264,855

261,459

268,113

Tetra Tech, Inc.

Consolidated Statements of Cash Flows

(unaudited - in thousands)

Nine Months Ended

June 28,

June 29,

2026

2025

Cash flows from operating activities:

Net income

$ 308,821

$ 120,073

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization

43,103

43,636

Amortization of stock-based awards

27,438

25,789

Deferred income taxes

42,433

(7,656 )

Gain on sale of divested business

(12,361 )

-

Impairment of goodwill

-

92,416

Fair value adjustments to contingent consideration

(7,429 )

(2,355 )

Gain on cash surrender value of life insurance policies

-

(1,599 )

Other non-cash items

3,869

7,187

Changes in operating assets and liabilities, net of effects of business acquisitions and divestiture:

Accounts receivable and contract assets

107,557

(65,886 )

Prepaid expenses and other assets

791

(21,720 )

Accounts payable

7,446

27,539

Accrued compensation

(35,973 )

(15,991 )

Contract liabilities

(1,501 )

44,486

Income taxes receivable/payable

(8,028 )

32,818

Cash settled contingent earn-out liability

-

(7,420 )

Other liabilities

(9,613 )

85,521

Net cash provided by operating activities

466,553

356,838

Cash flows from investing activities:

Payments for business acquisitions, net of cash acquired

(191,870 )

(97,693 )

Capital expenditures

(13,955 )

(12,514 )

Proceeds from divested business, net

40,263

-

Proceeds from company-owned life insurance policies

-

1,934

Net cash used in investing activities

(165,562 )

(108,273 )

Cash flows from financing activities:

Proceeds from borrowings

245,000

715,000

Repayments on long-term debt

(210,000 )

(665,000 )

Payment of debt issuance costs

-

(2,738 )

Repurchases of common stock

(202,010 )

(199,984 )

Shares repurchased for tax withholdings on share-based awards

(12,481 )

(13,942 )

Payments of contingent earn-out liabilities

(2,842 )

(14,805 )

Stock options exercised

564

216

Dividends paid

(52,473 )

(47,992 )

Principal payments on finance leases

(5,791 )

(5,742 )

Net cash used in financing activities

(240,033 )

(234,987 )

Effect of exchange rate changes on cash and cash equivalents

1,505

(3,434 )

Net increase in cash and cash equivalents

62,463

10,144

Cash and cash equivalents at beginning of period

168,372

232,689

Cash and cash equivalents at end of period

$ 230,835

$ 242,833

Tetra Tech, Inc.

Regulation G Information

June 28, 2026

Reconciliation of Revenue to Revenue, Net of Subcontractor Costs

(“Net Revenue”)

(in millions)

2025

2026

2023

2024

1st

Qtr

2nd

Qtr

6 Mos

3rd

Qtr

9 Mos

4th

Qtr

2025

1st

Qtr

2nd

Qtr

6 Mos

3rd

Qtr

9 Mos

Consolidated

Revenue

4,522.6

5,198.7

1,420.6

1,322.1

2,742.7

1,369.8

4,112.5

1,330.1

5,442.6

1,210.7

1,220.2

2,430.8

1,308.6

3,739.4

Subcontractor Costs

(771.5 )

(876.8 )

(223.3 )

(218.4 )

(441.7 )

(216.8 )

(658.5 )

(166.8 )

(825.3 )

(173.5 )

(170.5 )

(344.0 )

(200.0 )

(544.0 )

Net Revenue

3,751.1

4,321.9

1,197.3

1,103.7

2,301.0

1,153.0

3,454.0

1,163.3

4,617.3

1,037.2

1,049.7

2,086.8

1,108.6

3,195.4

GSG Segment

Revenue

2,300.7

2,624.2

791.4

698.9

1,490.2

709.4

2,199.6

628.9

2,828.6

525.5

559.4

1,084.9

598.4

1,683.3

Subcontractor Costs

(484.3 )

(540.5 )

(144.0 )

(134.6 )

(278.5 )

(136.8 )

(415.3 )

(88.4 )

(503.7 )

(93.4 )

(100.9 )

(194.3 )

(124.1 )

(318.4 )

Net Revenue

1,816.4

2,083.7

647.4

564.3

1,211.7

572.6

1,784.3

540.5

2,324.9

432.1

458.5

890.6

474.3

1,364.9

CIG Segment

Revenue

2,292.7

2,634.4

644.9

637.8

1,282.6

676.6

1,959.1

721.2

2,680.2

704.2

676.2

1,380.3

728.3

2,108.6

Subcontractor Costs

(358.0 )

(396.2 )

(94.9 )

(98.3 )

(193.2 )

(96.1 )

(289.4 )

(98.3 )

(387.7 )

(99.1 )

(85.0 )

(184.1 )

(94.1 )

(278.1 )

Net Revenue

1,934.7

2,238.2

550.0

539.5

1,089.4

580.5

1,669.7

622.9

2,292.5

605.1

591.2

1,196.2

634.2

1,830.5

Reconciliation of Net Income Attributable to Tetra Tech to Adjusted EBITDA

(in thousands)

2025

2026

2023

2024

1st

Qtr

2nd

Qtr

6

Mos

3rd

Qtr

9

Mos

4th

Qtr

2025

1st

Qtr

2nd

Qtr

6

Mos

3rd

Qtr

9

Mos

Net Income Attributable to Tetra Tech

273,420

333,382

747

5,388

6,135

113,844

119,979

127,745

247,724

105,028

93,623

198,651

109,584

308,235

Income Tax Expense

127,526

130,023

14,530

25,700

40,230

42,815

83,045

46,624

129,668

36,354

33,538

69,892

40,966

110,858

Interest Expense1

46,537

37,271

7,218

8,491

15,709

8,287

23,996

6,806

30,802

7,128

8,838

15,966

7,158

23,124

Depreciation

19,980

23,722

5,402

5,248

10,650

5,410

16,059

5,115

21,175

5,608

5,550

11,159

5,720

16,879

Amortization

41,226

49,955

10,660

8,629

19,289

8,287

27,577

9,524

37,101

8,387

8,791

17,178

9,046

26,224

FX Hedge Gain

(89,402 )

-

-

-

-

-

-

-

-

-

-

-

-

-

Gain on sale of divested business

-

-

-

-

-

-

-

-

-

(7,710 )

(4,651 )

(12,361 )

-

(12,361 )

EBITDA

419,287

574,353

38,557

53,456

92,013

178,643

270,656

195,814

466,470

154,795

145,689

300,485

172,474

472,959

Contingent Consideration

12,255

2,541

(366 )

(1,931 )

(2,297 )

(58 )

(2,355 )

(9,873 )

(12,228 )

(7,447 )

(58 )

(7,506 )

77

(7,429 )

Goodwill Impairment

-

-

-

92,416

92,416

-

92,416

-

92,416

-

-

-

-

-

Acquisition &

Integration Expenses2

49,554

7,138

-

-

-

-

-

-

-

-

-

-

-

-

Legal Contingency Costs

-

-

115,000

-

115,000

-

115,000

-

115,000

-

-

-

-

-

Adjusted EBITDA

481,096

584,032

153,191

143,941

297,132

178,585

475,717

185,941

661,658

147,348

145,631

292,979

172,551

465,530

1

Includes write-off of deferred debt origination fees of $3.8M in fiscal 2023

2 Includes lease impairment charge of $16.4M

in fiscal 2023

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