10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the quarterly period ended January 1, 2023

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number 0-19655

TETRA TECH, INC.

(Exact name of registrant as specified in its charter)

Delaware	95-4148514
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

3475 East Foothill Boulevard, Pasadena, California 91107

(Address of principal executive offices)  (Zip Code)

(626) 351-4664

(Registrant’s telephone number, including area code) 

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 (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes  ☒   No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes  ☒   No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. 

Large accelerated filer	☒	Accelerated filer	☐	Non-accelerated filer	☐	Smaller reporting company	☐
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. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ☐   No  ☒

At January 23, 2023, 53,226,139 shares of the registrant’s common stock were outstanding.

TETRA TECH, INC.

INDEX

 

PART I.	FINANCIAL INFORMATION	PAGE NO.
Item 1.	Financial Statements (Unaudited)	3
	Consolidated Balance Sheets as of January 1, 2023 and October 2, 2022	3
	Consolidated Statements of Income for the Three Months Ended January 1, 2023 and January 2, 2022	4
	Consolidated Statements of Comprehensive Income for the Three Months Ended January 1, 2023 and January 2, 2022	5
	Consolidated Statements of Cash Flows for the Three Months Ended January 1, 2023 and January 2, 2022	6
	Consolidated Statements of Equity for the Three Months Ended January 1, 2023 and January 2, 2022	7
	Notes to Unaudited Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	21
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	32
Item 4.	Controls and Procedures	32
PART II.	OTHER INFORMATION	32
Item 1.	Legal Proceedings	32
Item 1A.	Risk Factors	33
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	33
Item 4.	Mine Safety Disclosures	33
Item 6.	Exhibits	33
SIGNATURES		34

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PART I.                                                  FINANCIAL INFORMATION

    Item 1.                                 Financial Statements

 Tetra Tech, Inc.

Consolidated Balance Sheets

(unaudited - in thousands, except par value)

ASSETS	January 1, 2023		October 2, 2022
Current assets:
Cash and cash equivalents	$	164,397	$	185,094
Accounts receivable, net	795,872		755,112
Contract assets	80,903		92,405
Prepaid expenses and other current assets	193,635		125,605
Total current assets	1,234,807		1,158,216
Property and equipment, net	34,890		32,316
Right-of-use assets, operating leases	182,500		182,319
Goodwill	1,133,303		1,110,412
Intangible assets, net	27,536		29,163
Deferred tax assets	52,009		47,804
Other non-current assets	66,435		62,546
Total assets	$	2,731,480	$	2,622,776
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	151,256	$	147,436
Accrued compensation	184,468		237,669
Contract liabilities	274,118		241,340
Short-term lease liabilities, operating leases	55,809		57,865
Current portion of long-term debt	12,505		12,504
Current contingent earn-out liabilities	33,701		28,797
Other current liabilities	158,758		190,406
Total current liabilities	870,615		916,017
Deferred tax liabilities	32,779		15,161
Long-term debt	234,120		246,250
Long-term lease liabilities, operating leases	148,034		146,285
Non-current contingent earn-out liabilities	35,328		36,769
Other non-current liabilities	86,637		79,157
Commitments and contingencies (Note 17)
Equity:
Preferred stock - authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at January 1, 2023 and October 2, 2022	—		—
Common stock - authorized, 150,000 shares of $0.01 par value; issued and outstanding, 53,226 and 52,981 shares at January 1, 2023 and October 2, 2022, respectively	532		530
Additional paid-in capital	3,281		—
Accumulated other comprehensive loss	(175,126)		(208,144)
Retained earnings	1,495,221		1,390,701
Tetra Tech stockholders’ equity	1,323,908		1,183,087
Noncontrolling interests	59		50
Total stockholders' equity	1,323,967		1,183,137
Total liabilities and stockholders' equity	$	2,731,480	$	2,622,776

See Notes to Consolidated Financial Statements.

3

Tetra Tech, Inc.

Consolidated Statements of Income

(unaudited – in thousands, except per share data)

 

	Three Months Ended
	January 1, 2023		January 2, 2022
Revenue	$	894,766	$	858,510
Subcontractor costs	(158,204)		(179,177)
Other costs of revenue	(583,316)		(539,567)
Gross profit	153,246		139,766
Selling, general and administrative expenses	(56,502)		(52,546)
Acquisition and integration expenses	(3,761)		—
Contingent consideration – fair value adjustments	(933)		—
Income from operations	92,050		87,220
Interest expense, net	(5,372)		(2,904)
Other non-operating income	67,995		—
Income before income tax expense	154,673		84,316
Income tax expense	(37,958)		(15,817)
Net income	116,715		68,499
Net income attributable to noncontrolling interests	(9)		(10)
Net income attributable to Tetra Tech	$	116,706	$	68,489
Earnings per share attributable to Tetra Tech:
Basic	$	2.20	$	1.27
Diluted	$	2.18	$	1.25
Weighted-average common shares outstanding:
Basic	53,069		53,937
Diluted	53,529		54,577

See Notes to Consolidated Financial Statements.

4

Tetra Tech, Inc.

Consolidated Statements of Comprehensive Income

(unaudited – in thousands)

	Three Months Ended
	January 1, 2023		January 2, 2022
Net income	$	116,715	$	68,499
Other comprehensive income, net of tax
Foreign currency translation adjustment, net of tax	33,107		(686)
Gain (loss) on cash flow hedge valuations, net of tax	(89)		2,666
Other comprehensive income, net of tax	33,018		1,980
Comprehensive income, net of tax	$	149,733	$	70,479
Comprehensive income attributable to noncontrolling interests, net of tax	9		10
Comprehensive income attributable to Tetra Tech, net of tax	$	149,724	$	70,469

See Notes to Consolidated Financial Statements.

5

Tetra Tech, Inc.

Consolidated Statements of Cash Flows

(unaudited – in thousands)

	Three Months Ended
	January 1, 2023		January 2, 2022
Cash flows from operating activities:
Net income	$	116,715	$	68,499
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,616		6,111
Equity in income of unconsolidated joint ventures	(1,447)		(1,440)
Distributions of earnings from unconsolidated joint ventures	1,115		842
Amortization of stock-based awards	7,184		5,828
Deferred income taxes	15,935		(878)
Fair value adjustments to contingent consideration	933		—
Fair value adjustments to foreign currency forward contract	(67,995)		—
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable and contract assets	(16,175)		(21,560)
Prepaid expenses and other assets	5,967		5,364
Accounts payable	3,820		14,056
Accrued compensation	(53,201)		(40,321)
Contract liabilities	27,769		29,227
Other liabilities	(26,432)		11,854
Income taxes receivable/payable	4,387		4,837
Net cash provided by operating activities	25,191		82,419
Cash flows from investing activities:
Payments for business acquisitions, net of cash acquired	—		(8,858)
Capital expenditures	(4,996)		(1,518)
Proceeds from sale of assets	51		3,514
Net cash used in investing activities	(4,945)		(6,862)
Cash flows from financing activities:
Proceeds from borrowings	60,889		54,989
Repayments on long-term debt	(73,125)		(3,956)
Repurchases of common stock	—		(50,000)
Taxes paid on vested restricted stock	(16,586)		(24,949)
Stock options exercised	57		960
Dividends paid	(12,186)		(10,793)
Payments of contingent earn-out liabilities	—		(1,720)
Principal payments on finance leases	(1,316)		(945)
Net cash used in financing activities	(42,267)		(36,414)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	8,695		(169)
Net increase (decrease) in cash, cash equivalents and restricted cash	(13,326)		38,974
Cash, cash equivalents and restricted cash at beginning of period	185,491		166,568
Cash, cash equivalents and restricted cash at end of period	$	172,165	$	205,542
Supplemental information:
Cash paid during the period for:
Interest	$	3,433	$	2,456
Income taxes, net of refunds received of $0.1 million and $2.3 million	$	14,540	$	11,535
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$	164,397	$	205,542
Restricted cash	7,768		—
Total cash, cash equivalents and restricted cash	$	172,165	$	205,542

See Notes to Consolidated Financial Statements.

6

Tetra Tech, Inc.

Consolidated Statements of Stockholders' Equity

Three Months Ended January 2, 2022 and January 01, 2023

(unaudited – in thousands)

	Common Stock			Additional Paid-in Capital		Accumulated Other Comprehensive Loss		Retained Earnings		Total Tetra Tech Equity		Non-Controlling Interests		Total Equity
	Shares	Amount
BALANCE AT OCTOBER 3, 2021	53,981	$	540	$	—	$	(125,028)	$	1,358,726	$	1,234,238	$	53	$	1,234,291
Net income								68,489		68,489		10		68,499
Other comprehensive income						1,980				1,980				1,980
Cash dividends of $0.20 per common share								(10,793)		(10,793)				(10,793)
Stock-based compensation				5,828						5,828				5,828
Restricted & performance shares released	182	2		(18,916)				(6,035)		(24,949)				(24,949)
Stock options exercised	20	—		960						960				960
Shares issued for Employee Stock Purchase Plan	106	1		12,128						12,129				12,129
Stock repurchases	(290)	(3)		—				(49,997)		(50,000)				(50,000)
BALANCE AT JANUARY 2, 2022	53,999	$	540	$	—	$	(123,048)	$	1,360,390	$	1,237,882	$	63	$	1,237,945
BALANCE AT OCTOBER 2, 2022	52,981	$	530	$	—	$	(208,144)	$	1,390,701	$	1,183,087	$	50	$	1,183,137
Net income								116,706		116,706		9		116,715
Other comprehensive income						33,018				33,018				33,018
Cash dividends of $0.23 per common share								(12,186)		(12,186)				(12,186)
Stock-based compensation				7,184						7,184				7,184
Restricted & performance shares released	145	1		(16,587)						(16,586)				(16,586)
Stock options exercised	2	—		57						57				57
Shares issued for Employee Stock Purchase Plan	98	1		12,627						12,628				12,628
BALANCE AT JANUARY 1, 2023	53,226	$	532	$	3,281	$	(175,126)	$	1,495,221	$	1,323,908	$	59	$	1,323,967

See Notes to Consolidated Financial Statements.

7

TETRA TECH, INC.

Notes to Consolidated Financial Statements

1.                                      Basis of Presentation

The accompanying unaudited consolidated financial statements and related notes of Tetra Tech, Inc. (“we,” “us,” “our” or "Tetra Tech") have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. They do not include all of the information and footnotes required by U.S. GAAP for complete financial statements and, therefore, should be read in conjunction with the audited consolidated financial statements and the notes contained in our Annual Report on Form 10-K for the fiscal year ended October 2, 2022.

These financial statements reflect all normal recurring adjustments that are considered necessary for a fair statement of our financial position, results of operations and cash flows for the interim periods presented. The results of operations and cash flows for any interim period are not necessarily indicative of results for the full fiscal year or for future fiscal years. Certain prior year amounts have been reclassified to conform to the current year presentation.

2.                                   Recent Accounting Pronouncements

In November 2021, the Financial Accounting Standards Board ("FASB") issued ASU 2021-10, Government Assistance (Topic 832), which requires annual disclosures for transactions with a government authority that are accounted for by applying a grant or contribution model by analogy, including (1) the types of transactions, (2) the accounting for those transactions, and (3) the effect of those transactions on an entity's financial statements. ASU 2021-10 was effective for us beginning in the first quarter of fiscal 2023.

In fiscal 2020, the Canadian federal government implemented the Canadian Emergency Wage Subsidy ("CEWS") program in response to the negative impact of the coronavirus disease 2019 ("COVID-19") pandemic on businesses operating in Canada. Our Canadian legal entities qualified for and applied for these CEWS cash benefits to partially offset the impacts of revenue reductions and on-going staffing costs. The $26.0 million total received was initially recorded in "Other current liabilities" until all potential amendments to the qualification criteria, including some that were proposed with retroactive application, were finalized in fiscal 2022. As there are no further contingencies, beginning in fiscal 2023, the amounts received will be distributed to all Canadian employees. We expect to distribute approximately $9 million in the next twelve months. Accordingly, this amount was reclassified from "Other current liabilities" to "Accrued compensation" on our consolidated balance sheet at October 2, 2022. The remaining $17.0 million, which we expect to distribute beyond one year, was reclassified to "Other non-current liabilities". We do not expect there will be any related impact to our operating income, and we have no outstanding applications for further government assistance.

3.                                   Revenue and Contract Balances

We disaggregate revenue by client sector and contract type, as we believe it best depicts how the nature, timing, and uncertainty of revenue and cash flows are affected by economic factors. The following tables present revenue disaggregated by client sector and contract type (in thousands):

8

	Three Months Ended
	January 1, 2023		January 2, 2022
Client Sector:
U.S. federal government (1)	$	276,075	$	266,797
U.S. state and local government	153,195		159,008
U.S. commercial	198,956		176,904
International (2)	266,540		255,801
Total	$	894,766	$	858,510
Contract Type:
Fixed-price	$	327,737	$	331,248
Time-and-materials	420,570		395,648
Cost-plus	146,459		131,614
Total	$	894,766	$	858,510

(1)    Includes revenue generated under U.S. federal government contracts performed outside the United States.

(2)    Includes revenue generated from foreign operations, primarily in Canada, Australia, the United Kingdom, and revenue generated from non-U.S. clients.

Other than the U.S. federal government, no single client accounted for more than 10% of our revenue for the three months ended January 1, 2023 and January 2, 2022.

Contract Assets and Contract Liabilities

We invoice customers based on the contractual terms of each contract. However, the timing of revenue recognition may differ from the timing of invoice issuance.

Contract assets represent revenue recognized in excess of the amounts for which we have the contractual right to bill our customers. Such amounts are recoverable from customers based upon various measures of performance, including achievement of certain milestones or completion of a contract. In addition, many of our time and materials arrangements are billed in arrears pursuant to contract terms that are standard within the industry, resulting in contract assets and/or unbilled receivables being recorded, as revenue is recognized in advance of billings. Contract retentions, included in contract assets, represent amounts withheld by clients until certain conditions are met or the project is completed, which may extend beyond one year.

Contract liabilities consist of billings in excess of revenue recognized. Contract liabilities decrease as we recognize revenue from the satisfaction of the related performance obligation and increase as billings in advance of revenue recognition occur. Contract assets and liabilities are reported in a net position on a contract-by-contract basis at the end of each reporting period. There were no substantial non-current contract assets or liabilities for the periods presented. Net contract assets/liabilities consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Contract assets (1)	$	80,903	$	92,405
Contract liabilities	274,118		241,340
Net contract liabilities	$	(193,215)	$	(148,935)

(1)    Includes $17.2 million and $23.3 million of contract retentions at January 1, 2023 and October 2, 2022, respectively.

In the first quarters of fiscal 2023 and 2022, we recognized revenue of approximately $81 million and $63 million, respectively, from amounts included in the contract liability balances at the end of fiscal 2022 and 2021, respectively.

We recognize revenue primarily using the cost-to-cost measure of progress method to estimate progress towards completion. Changes in those estimates could result in the recognition of cumulative catch-up adjustments to the contract’s inception-to-date revenue, costs and profit in the period in which such changes are made. As a result, we recognized net

9

favorable revenue and operating income adjustments of $3.5 million and $2.8 million in the first quarters of fiscal 2023 and 2022, respectively.

Changes in revenue and cost estimates could also result in a projected loss, determined at the contract level, which would be recorded immediately in earnings. At January 1, 2023 and October 2, 2022, our consolidated balance sheets included liabilities for anticipated losses of $7.6 million and $10.0 million, respectively. The estimated cost to complete these related contracts at January 1, 2023 and October 2, 2022 was approximately $55 million and $80 million, respectively.

Accounts Receivable, Net

Net accounts receivable consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Billed	$	486,027	$	491,700
Unbilled	313,782		267,161
Total accounts receivable	799,809		758,861
Allowance for doubtful accounts	(3,937)		(3,749)
Total accounts receivable, net	$	795,872	$	755,112

Billed accounts receivable represent amounts billed to clients that have not been collected. Unbilled accounts receivable, which represent an unconditional right to payment subject only to the passage of time, include unbilled amounts typically resulting from revenue recognized but not yet billed pursuant to contract terms or billed after the period end date. Substantially all of our unbilled receivables at January 1, 2023 are expected to be billed and collected within 12 months. The allowance for doubtful accounts represents amounts that are expected to become uncollectible or unrealizable in the future. We determine an estimated allowance for uncollectible accounts based on management's consideration of trends in the actual and forecasted credit quality of our clients, including delinquency and payment history; type of client, such as a government agency or a commercial sector client; and general economic and industry conditions.

Claims are amounts in excess of agreed contract prices that we seek to collect from our clients or other third parties for delays, errors in specifications and designs, contract terminations, change orders in dispute or unapproved as to both scope and price, or other causes of unanticipated additional costs. There were no claims included in our total accounts receivable at January 1, 2023 and October 2, 2022. We regularly evaluate all unsettled claim amounts and record appropriate adjustments to revenue when it is probable that the claim will result in a different contract value than the amount previously estimated. In the first quarters of fiscal 2023 and 2022, we recorded no gains or losses related to claims.

Other than the U.S. federal government, no single client accounted for more than 10% of our accounts receivable at January 1, 2023 and October 2, 2022.

Remaining Unsatisfied Performance Obligations (“RUPO”)

Our RUPO represents a measure of the total dollar value of work to be performed on contracts awarded and in progress. We had $3.8 billion of RUPO at January 1, 2023. RUPO increases with awards from new contracts or additions on existing contracts and decreases as work is performed and revenue is recognized on existing contracts. RUPO may also decrease when projects are canceled or modified in scope. We include a contract within our RUPO when the contract is awarded and an agreement on contract terms has been reached.

We expect to satisfy our RUPO at January 1, 2023 over the following periods (in thousands):

	Amount
Within 12 months	$	2,460,171
Beyond	1,329,949
Total	$	3,790,120

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Although RUPO reflects business that is considered to be firm, cancellations, deferrals or scope adjustments may occur. RUPO is adjusted to reflect any known project cancellations, revisions to project scope and cost, foreign currency exchange fluctuations and project deferrals, as appropriate. Our operations and maintenance contracts can generally be terminated by the clients without a substantive financial penalty. Therefore, the remaining performance obligations on such contracts are limited to the notice period required for the termination (usually 30, 60, or 90 days).

4.            Acquisitions

Subsequent Event. On January 3, 2023, we acquired Amyx, Inc. (“Amyx”), an enterprise technology services, cybersecurity and management consulting firm. Based in Reston, Virginia, Amyx, with over 500 employees, provides application modernization, cybersecurity, systems engineering, financial management, and program management support on over 30 Federal Government programs. Amyx will be included in our GSG segment.

Subsequent Event. On September 23, 2022, we made an all cash offer to acquire all of the outstanding shares of RPS Group plc ("RPS"), a publicly traded company on the London Stock Exchange for 222 pence per share, through a scheme of arrangement, which was unanimously recommended by RPS's Board of Directors. On November 3, 2022, RPS's shareholders approved the scheme of arrangement. On January 19, 2023, the court sanctioned scheme of arrangement to purchase RPS was approved, and we completed the acquisition on January 23, 2023. The total purchase price including assumed debt and transactions costs was approximately GBP 714 million. RPS employs approximately 5,000 associates in the United Kingdom, Europe, Asia Pacific and North America, delivering high-end solutions, especially in energy transformation, water and program management for government and commercial clients. Substantially all of RPS will be included in our CIG segment.

The results of these acquisitions will be included in our consolidated financial statements beginning on the respective closing dates. We are in the process of performing procedures to determine the fair value of assets acquired and liabilities assumed related to the acquisitions, and will include the preliminary purchase price allocation in our Quarterly Report on Form 10-Q for the period ending April 2, 2023. See Note 14, "Credit Facility" for additional information regarding the financing of these acquisitions.

In fiscal 2022, we acquired The Integration Group of America ("TIGA"), Piteau Associates (“PAE”) and other financially immaterial acquisitions. TIGA is based in Spring, Texas and is an industry leader in process automation and system integration solutions, including customized software and platform (SaaS/PaaS) applications, advanced data analytics, cloud data integration and platform virtualization. PAE is based in Vancouver, British Columbia and is a global leader in sustainable natural resource analytics including hydrologic numerical modeling and dewatering system design. PAE is part of our CIG segment, and TIGA and other immaterial acquisitions are part of our GSG segment. The total fair value of the purchase price for all four acquisitions was $88.3 million. This amount is comprised of $44.0 million in initial cash payments made to the sellers, $2.5 million of receivables (net) related to estimated post-closing adjustments for the net assets acquired, $15.5 million payable in a promissory note issued to the sellers along with related transaction expenses of the sellers (which were subsequently paid in July 2022), and $31.3 million for the estimated fair value of contingent earn-out obligations, with a maximum of $47.0 million, based upon the achievement of specified operating income targets in each of the three to five years following the acquisitions.

Goodwill additions resulting from fiscal 2022 business combinations are primarily attributable to the significant technical expertise residing in embedded workforces that are sought out by clients, long-term management experience, the industry reputations, and the synergies expected to arise after the acquisitions in the areas of data management, digitization, modeling, water, and natural resources. These acquired capabilities, when combined with our existing global consulting and engineering business, result in opportunities that allow us to provide services under contracts that could not have been pursued individually by either us or the acquired companies. The results of these acquisitions were included in our consolidated financial statements from their respective closing dates. These acquisitions were not considered material to our financial statements, individually or in the aggregate, to our consolidated financial statements. As a result, no pro forma information has been provided.

Backlog and client relations intangible assets include the fair value of existing contracts and the underlying customer relationships with lives ranging from one to ten years, and trade names intangible assets have lives ranging from three to five years. For detailed information regarding our intangible assets, see Note 5, “Goodwill and Intangible Assets”.

Most of our acquisition agreements include contingent earn-out agreements, which are generally based on the achievement of future operating income thresholds. The contingent earn-out arrangements are based on our valuations of the acquired companies and reduce the risk of overpaying for acquisitions if the projected financial results are not achieved. The fair values of any earn-out arrangements are included as part of the purchase price of the acquired companies on their respective acquisition dates. For each transaction, we estimate the fair value of contingent earn-out payments as part of the initial purchase price and record the estimated fair value of contingent consideration as a liability in “Current contingent earn-out liabilities”

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and “Non-current contingent earn-out liabilities” on the consolidated balance sheets. We consider several factors when determining that contingent earn-out liabilities are part of the purchase price, including the following: (1) the valuation of our acquisitions is not supported solely by the initial consideration paid, and the contingent earn-out formula is a critical and material component of the valuation approach to determining the purchase price; and (2) the former owners of acquired companies that remain as key employees receive compensation other than contingent earn-out payments at a reasonable level compared with the compensation of our other key employees. The contingent earn-out payments are not affected by employment termination.

We measure our contingent earn-out liabilities at fair value on a recurring basis using significant unobservable inputs classified within Level 3 of the fair value hierarchy. We use a probability-weighted discounted income approach as a valuation technique to convert future estimated cash flows to a single present value amount. The significant unobservable inputs used in the fair value measurements are operating income projections over the earn-out period (generally three to five years), and the probability outcome percentages we assign to each scenario. Significant increases or decreases to either of these inputs in isolation would result in a significantly higher or lower liability, with a higher liability capped by the contractual maximum of the contingent earn-out obligation. Ultimately, the liability will be equivalent to the amount paid, and the difference between the fair value estimate and amount paid will be recorded in earnings. The amount paid that is less than or equal to the contingent earn-out liability on the acquisition date is reflected as cash used in financing activities in our consolidated statements of cash flows. Any amount paid in excess of the contingent earn-out liability on the acquisition date is reflected as cash used in operating activities in our consolidated statements of cash flows.

We review and re-assess the estimated fair value of contingent consideration on a quarterly basis, and the updated fair value could differ materially from the initial estimates. Changes in the estimated fair value of our contingent earn-out liabilities related to the time component of the present value calculation are reported in interest expense. Adjustments to the estimated fair value related to changes in all other unobservable inputs are reported in operating income. For the first quarter of fiscal 2023, we evaluated our estimates for contingent consideration liabilities for the remaining earn-out periods for each individual acquisition, which included a review of their financial results to-date, the status of ongoing projects in their RUPO, and the inventory of prospective new contract awards. In addition, we considered the potential impact of the global economic disruption due to the COVID-19 pandemic on our operating income projections over the various earn-out periods. For the first quarters of fiscal 2023 and 2022, we had no material adjustments to our contingent earn-out liabilities in operating income.

At January 1, 2023, there was a total potential maximum of $120.9 million of outstanding contingent consideration related to acquisitions. Of this amount, $69.0 million was estimated as the fair value and accrued on our consolidated balance sheet.

5.            Goodwill and Intangible Assets

The following table summarizes the changes in the carrying value of goodwill by reportable segment (in thousands):

	GSG		CIG		Total
Balance at October 2, 2022	$	519,102	$	591,310	$	1,110,412
Translation adjustments	2,792		20,099		22,891
Balance at January 1, 2023	$	521,894	$	611,409	$	1,133,303

The foreign currency translation adjustments resulted from our foreign subsidiaries with functional currencies that are different than our reporting currency. These goodwill amounts are presented net of reductions from historical impairment adjustments. The gross amounts for GSG were $539.6 million and $536.8 million at January 1, 2023 and October 2, 2022, respectively, excluding accumulated impairment of $17.7 million at each date. The gross amounts of goodwill for CIG were $732.9 million and $712.8 million at January 1, 2023 and October 2, 2022, respectively, excluding accumulated impairment of $121.5 million at each date.

We perform our annual goodwill impairment review at the beginning of our fiscal fourth quarter. Our most recent annual review at July 4, 2022 (i.e. the first day of our fourth quarter in fiscal 2022) indicated that we had no impairment of goodwill, and all of our reporting units had estimated fair values that were in excess of their carrying values, including goodwill. At July 4, 2022, and after the reallocation of goodwill on the first day of fiscal 2022, we had no reporting units that had estimated fair values that exceeded their carrying values by less than 165%.

We also regularly evaluate whether events and circumstances have occurred that may indicate a potential change in the recoverability of goodwill. We perform interim goodwill impairment reviews between our annual reviews if certain events and circumstances have occurred, such as a deterioration in general economic conditions; an increase in the competitive environment; a change in management, key personnel, strategy or customers; negative or declining cash flows; or a decline in

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actual or planned revenue or earnings compared with actual and projected results of relevant prior periods. Although we believe that our estimates of fair value for these reporting units are reasonable, if financial performance for these reporting units falls significantly below our expectations or market prices for similar business decline, the goodwill for these reporting units could become impaired.    

The following table presents the gross amount and accumulated amortization of our acquired identifiable intangible assets with finite useful lives included in “Intangible assets, net” on the consolidated balance sheets ($ in thousands):

	Period Ended
	January 1, 2023							October 2, 2022
	Weighted- Average Remaining Life (in Years)	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Client relations	5.4	$	43,601	$	(23,081)	$	20,520	$	41,676	$	(21,092)	$	20,584
Backlog	0.4	34,837		(33,033)		1,804		33,286		(29,990)		3,296
Trade names	3.5	13,656		(8,444)		5,212		12,711		(7,428)		5,283
Total		$	92,094	$	(64,558)	$	27,536	$	87,673	$	(58,510)	$	29,163

Amortization expense for the three months ended January 1, 2023 was $3.4 million, compared to $2.7 million for the prior-year period. Estimated amortization expense for the remainder of fiscal 2023 and succeeding years is as follows (in thousands):

	Amount
2023 (remaining)	$	6,755
2024	5,552
2025	4,719
2026	3,869
2027	2,349
Beyond	4,292
Total	$	27,536

6.                                     Property and Equipment

Property and equipment consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Equipment, furniture and fixtures	$	101,002	$	96,710
Leasehold improvements	32,985		32,428
Total property and equipment	133,987		129,138
Accumulated depreciation	(99,097)		(96,822)
Property and equipment, net	$	34,890	$	32,316

The depreciation expense related to property and equipment was $3.2 million for the three months ended January 1, 2023, compared to $3.4 million for the prior-year period.

7.                                     Stock Repurchase and Dividends

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On October 5, 2021, our Board of Directors authorized a new stock repurchase program under which we could repurchase up to $400 million of our common stock. We did not repurchase any shares of our common stock in the first quarter of fiscal 2023. At January 1, 2023, we had a remaining balance of $347.8 million under our stock repurchase program.

The following table presents dividends declared and paid in the first three months of fiscal 2023 and 2022:

Declare Date	Dividend Paid Per Share		Record Date	Payment Date	Dividend Paid (in thousands)
November 7, 2022	$	0.23	November 21, 2022	December 9, 2022	$	12,186
November 15, 2021	$	0.20	December 2, 2021	December 20, 2021	$	10,793

Subsequent Event.  On January 30, 2023, our Board of Directors declared a quarterly cash dividend of $0.23 per share payable on February 24, 2023 to stockholders of record as of the close of business on February 13, 2023.

8.                                     Leases

Our operating leases are primarily for corporate and project office spaces. To a much lesser extent, we have operating leases for vehicles and equipment. Our operating leases have remaining lease terms of one month to ten years, some of which may include options to extend the leases for up to five years.

We determine if an arrangement is a lease at inception. Operating leases are included in "Right-of-use assets, operating leases", "Short-term lease liabilities, operating leases" and "Long-term lease liabilities, operating leases" in the consolidated balance sheets. Our finance leases are primarily for certain information technology equipment, and are included in "Other non-current assets", "Other current liabilities" and "Other non-current liabilities" in the consolidated balance sheets at January 1, 2023 and October 2, 2022.

Right-of-use ("ROU") assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, incremental borrowing rates are used based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset at the commencement date also includes any lease payments made to the lessor at or before the commencement date and initial direct costs less lease incentives received. Lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term.

The components of lease costs are as follows (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Operating lease cost	$	20,961	$	21,751
Sublease income	(32)		(125)
Total lease cost	$	20,929	$	21,626

Supplemental cash flow information related to leases is as follows (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Operating cash flows for operating leases	$	16,493	$	17,519
Financing cash flows for finance leases	1,316		945
Right-of-use assets obtained in exchange for new operating lease liabilities	11,117		12,347
Right-of-use assets obtained in exchange for new finance lease liabilities	$	1,431	$	1,349

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Supplemental balance sheet and other information related to leases are as follows (in thousands):

	Balance at
	January 1, 2023			October 2, 2022
Operating leases:
Right-of-use assets	$	182,500		$	182,319
Lease liabilities:
Current	55,809			57,865
Non-current	148,034			146,285
Total operating lease liabilities	$	203,843		$	204,150
Finance leases:
Other non-current assets	$	9,932		$	9,564
Other current liabilities	$	4,582		$	4,481
Other non-current liabilities	$	5,343		$	4,745
Weighted-average remaining lease term:
Operating leases	5 years			5 years
Finance leases	2 years			2 years
Weighted-average discount rate:
Operating leases	2.2		%	2.2		%
Finance leases	3		%	3		%

At January 1, 2023, we have approximately $8 million of operating leases that have not yet commenced.

A maturity analysis of the future undiscounted cash flows associated with our lease liabilities at January 1, 2023 is as follows (in thousands):

	Operating Leases		Finance Leases
2023 (remaining)	$	49,216	$	3,787
2024	51,833		3,699
2025	39,744		2,182
2026	25,234		574
2027	17,870		211
Beyond	32,484		—
Total lease payments	216,381		10,453
Less: imputed interest	(12,538)		(521)
Total present value of lease liabilities	$	203,843	$	9,932

9.                                     Stockholders’ Equity and Stock Compensation Plans

We recognize the fair value of our stock-based awards as compensation expense on a straight-line basis over the requisite service period in which the award vests. Stock-based compensation expense for the three months ended January 1, 2023 was $7.2 million, compared to $5.8 million for the same period last year. Most of these amounts were included in selling, general and administrative expenses on our consolidated statements of income. In the first quarter of fiscal 2023, we awarded 55,708 performance share units (“PSUs”) to our non-employee directors and executive officers at an estimated fair value of $204.00 per share on the award date. All PSUs are performance-based and vest, if at all, after the conclusion of the three-year performance period. The number of PSUs that ultimately vest is based 50% on the growth in our diluted earnings per share and 50% on our relative total shareholder return over the vesting period. Additionally, we awarded 98,305 restricted stock units

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(“RSUs”) to our non-employee directors, executive officers and employees at a fair value of $156.52 per share on the award date. All executive officer and employee RSUs have time-based vesting over a four-year period, and the non-employee director RSUs vest after one year.

10.                                Earnings per Share (“EPS”)

Basic EPS is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding, less unvested restricted stock for the period. Diluted EPS is computed by dividing net income by the weighted-average number of common shares outstanding and dilutive potential common shares for the period. Potential common shares include the weighted-average dilutive effects of outstanding stock options and unvested restricted stock using the treasury stock method.

The following table presents the number of weighted-average shares used to compute basic and diluted EPS (in thousands, except per share data):

	Three Months Ended
	January 1, 2023		January 2, 2022
Net income attributable to Tetra Tech	$	116,706	$	68,489
Weighted-average common shares outstanding – basic	53,069		53,937
Effect of dilutive stock options and unvested restricted stock	460		640
Weighted-average common shares outstanding – diluted	53,529		54,577
Earnings per share attributable to Tetra Tech:
Basic	$	2.20	$	1.27
Diluted	$	2.18	$	1.25

11.                                  Income Taxes

The effective tax rates for the first three months of fiscal 2023 and 2022 were 24.5% and 18.8%, respectively. Income tax expense was reduced by $1.7 million and $4.5 million of excess tax benefits on share-based payments in the first quarters of fiscal 2023 and 2022, respectively. Excluding the impact of the excess tax benefits on share-based payments, our effective tax rates in the first quarters of fiscal 2023 and 2022 were 25.7% and 24.1%, respectively.

At January 1, 2023 and October 2, 2022, the liability for income taxes associated with uncertain tax positions was $10.8 million and $10.6 million, respectively. These uncertain tax positions substantially relate to ongoing examinations. It is reasonably possible that these liabilities may decrease within the next 12 months as certain examinations are resolved. These liabilities represent our current estimates of the additional tax liabilities that we may be assessed when the related audits are concluded. If these audits are resolved in a manner more unfavorable than our current expectations, our additional tax liabilities could be materially higher than the amounts currently recorded resulting in additional tax expense.

12.                               Reportable Segments

We manage our operations under two reportable segments. Our GSG reportable segment primarily includes activities with U.S. government clients (federal, state and local) and all activities with development agencies worldwide. Our CIG reportable segment primarily includes activities with U.S. commercial clients and international clients other than development agencies.

GSG provides high-end consulting and engineering services primarily to U.S. government clients (federal, state and local) and development agencies worldwide. GSG supports U.S. government civilian and defense agencies with services in water, environment, sustainable infrastructure, information technology, and disaster management. GSG also provides engineering design services for U.S. based federal and municipal clients, especially in water infrastructure, flood protection and solid waste. GSG also leads our support for development agencies worldwide, especially in the United States, United Kingdom, and Australia.

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CIG primarily provides high-end consulting and engineering services to U.S. commercial clients, and international clients inclusive of the commercial and government sectors. CIG supports commercial clients across the Fortune 500, renewable energy, industrial, high performance buildings, and aerospace markets. CIG also provides sustainable infrastructure and related environmental, engineering and project management services to commercial and local government clients across Canada, in Asia Pacific (primarily Australia and New Zealand), the United Kingdom, as well as Brazil and Chile.

Management evaluates the performance of these reportable segments based upon their respective segment operating income before the effect of amortization expense related to acquisitions, and other unallocated corporate expenses. We account for inter-segment revenues and transfers as if they were to third parties; that is, by applying a negotiated fee onto the costs of the services performed. All significant intercompany balances and transactions are eliminated in consolidation.

The following tables summarize financial information regarding our reportable segments (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Revenue
GSG	$	471,067	$	456,099
CIG	439,556		416,286
Elimination of inter-segment revenue	(15,857)		(13,875)
Total revenue	$	894,766	$	858,510
Income from operations
GSG	$	60,347	$	51,179
CIG	50,108		45,308
Corporate (1)	(18,405)		(9,267)
Total income from operations	$	92,050	$	87,220

(1)     Includes amortization of intangibles, other costs and other income not allocable to our reportable segments.

	Balance at
	January 1, 2023		October 2, 2022
Total Assets
GSG	$	586,128	$	558,764
CIG	742,288		688,640
Corporate (1)	1,403,064		1,375,372
Total assets	$	2,731,480	$	2,622,776

(1)    Corporate assets consist of intercompany eliminations and assets not allocated to our reportable segments including goodwill, intangible assets, deferred income taxes and certain other assets.

13.                               Fair Value Measurements

The fair value of long-term debt was determined using the present value of future cash flows based on the borrowing rates currently available for debt with similar terms and maturities (Level 2 measurement, as described in “Critical Accounting Policies and Estimates” in our Annual Report on Form 10-K for the fiscal year ended October 2, 2022). The carrying value of our long-term debt approximated fair value at January 1, 2023 and October 2, 2022. At January 1, 2023, we had borrowings of $240.6 million outstanding under our Amended Credit Agreement, which were used to fund business acquisitions, working capital needs, stock repurchases, dividends, capital expenditures and contingent earn-outs.

14.    Credit Facility

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On October 26, 2022, we entered into a Third Amended and Restated Credit Agreement that provides for an additional $500 million senior secured term loan facility (the "New Term Loan Facility") increasing our total borrowing capacity to $1.55 billion.

Subsequent Event. On January 23, 2023, we acquired RPS and drew the entire amount of the New Term Loan Facility to partially finance the RPS acquisition. The remaining purchase price was financed with existing cash on hand and borrowings under the existing Amended Revolving Credit Facility. The New Term Loan Facility is not subject to any amortization payments of principal and matures on the third anniversary of the RPS acquisition closing date.

On February 18, 2022, we entered into Amendment No. 2 to Second Amended and Restated Credit Agreement (“Amended Credit Agreement”) with a total borrowing capacity of $1.05 billion that will mature in February 2027. The Amended Credit Agreement is a $750 million senior secured, five-year facility that provides for a $250 million term loan facility (the “Amended Term Loan Facility”) and a $500 million revolving credit facility (the “Amended Revolving Credit Facility”). In addition, the Amended Credit Agreement includes a $300 million accordion feature that allows us to increase the Amended Credit Agreement to $1.05 billion subject to lender approval. The Amended Credit Agreement provides for, among other things, (i) refinance indebtedness under our Credit Agreement dated at July 30, 2018; (ii) finance open market repurchases of common stock, acquisitions, and cash dividends and distributions; and (iii) utilize the proceeds for working capital, capital expenditures and other general corporate purposes. The Amended Credit Agreement provides for a reduction in the interest grid for meeting certain sustainability targets related to the (i) reduction of greenhouse gas emissions through the Company’s projects and operational sustainability initiatives and (ii) improvement of peoples’ lives as a result of the Company’s projects that provide environmental, social and governance benefits. The Amended Revolving Credit Facility includes a $100 million sublimit for the issuance of standby letters of credit, a $20 million sublimit for swingline loans, and a $300 million sublimit for multicurrency borrowings and letters of credit.

The entire Amended Term Loan Facility was drawn on February 18, 2022. The Amended Term Loan Facility is subject to quarterly amortization of principal at 5% annually commencing June 30, 2022. We may borrow on the Amended Revolving Credit Facility, at our option, at either (a) a benchmark rate plus a margin that ranges from 1.000% to 1.875% per annum, or (b) a base rate for loans in U.S. dollars (the highest of the U.S. federal funds rate plus 0.50% per annum, the bank’s prime rate or the Secured Overnight Financing Rate ("SOFR") rate plus 1.00%, plus a margin that ranges from 0% to 0.875% per annum. In each case, the applicable margin is based on our Consolidated Leverage Ratio, calculated quarterly. The Amended Term Loan Facility is subject to the same interest rate provisions. The Amended Credit Agreement expires on February 18, 2027, or earlier at our discretion upon payment in full of loans and other obligations.

The Amended Credit Agreement contains certain affirmative and restrictive covenants, and customary events of default. The financial covenants provide for a maximum Consolidated Leverage Ratio of 3.25 to 1.00 (total funded debt/EBITDA, as defined in the Amended Credit Agreement) and a minimum Consolidated Interest Coverage Ratio of 3.00 to 1.00 (EBITDA/Consolidated Interest Charges, as defined in the Amended Credit Agreement). Our obligations under the Amended Credit Agreement are guaranteed by certain of our domestic subsidiaries and are secured by first priority liens on (i) the equity interests of certain of our subsidiaries, including those subsidiaries that are guarantors or borrowers under the Amended Credit Agreement, and (ii) the accounts receivable, general intangibles and intercompany loans, and those of our subsidiaries that are guarantors or borrowers.

15.                               Derivative Financial Instruments

We use certain interest rate derivative contracts to hedge interest rate exposures on our variable rate debt. We also enter into foreign currency derivative contracts with financial institutions to reduce the risk that cash flows and earnings could adversely be affected by foreign currency exchange rate fluctuations. Our hedging program is not designated for trading or speculative purposes.

We recognize derivative instruments as either assets or liabilities on the accompanying consolidated balance sheets at fair value. We record changes in the fair value (i.e., gains or losses) of the derivatives that have been designated as cash flow hedges in our consolidated balance sheets as accumulated other comprehensive income, and in our consolidated statements of income for those derivatives designated as fair value hedges. Our derivative contracts are categorized within Level 2 of the fair value hierarchy.

We entered into a forward contract in the fourth quarter of fiscal 2022 to acquire GBP 714.0 million at a rate of 1.0852 for a total of USD 774.8 million that was integrated with our planned acquisition of RPS. This contract matured on December 30, 2022. On December 28, 2022, we entered into an extension of the integrated forward contract to acquire GBP 714.0 million at a rate of 1.086 for a total of USD 775.4 million, extending the maturity date to January 23, 2023, the closing date of the RPS

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acquisition. Although an effective economic hedge of our foreign exchange risk related to this transaction, the forward contract does not qualify for hedge accounting. As a result, the forward contract is marked-to-market with changes in fair value recognized in earnings each period. The intrinsic value of the forward contract was immaterial at inception as the GBP/USD spot and forward exchange rates were essentially the same. The fair value of the forward contract at October 2, 2022 was $19.9 million, and an unrealized gain of the same amount was recognized in the fourth quarter of fiscal 2022 results. The fair value of the forward contract at January 1, 2023 was $87.9 million, which is reported in the "Prepaid expenses and other current assets" on our consolidated balance sheet at January 1, 2023. This resulted in an unrealized gain of $68.0 million in the first quarter of fiscal 2023, which was recognized in earnings and reported in the “Other non-operating income" on our consolidated income statement. The forward contract was settled on January 23, 2023, with a cumulative gain of approximately $109 million.

In fiscal 2018, we entered into five interest rate swap agreements that we designated as cash flow hedges to fix the interest rate on the borrowings under our term loan facility. At January 1, 2023, the notional principal of our outstanding interest swap agreements was $196.9 million ($39.4 million each.) The interest rate swaps have a fixed interest rate of 2.79% and expire in July 2023 for all five agreements. At January 1, 2023 and October 2, 2022, the fair values of the effective portion of our interest rate swap agreements designated as cash flow hedges before tax effect were unrealized gains of $2.3 million and $2.4 million, respectively, which were reported in "Other non-current assets" on our consolidated balance sheets. Additionally, the related loss of $0.1 million for the three months ended January 1, 2023, compared to the related gain of $2.7 million for the prior-year period, were recognized and reported on our consolidated statements of comprehensive income. We expect to reclassify a credit of $2.2 million from accumulated other comprehensive loss to interest expense within the next twelve months. There were no other derivative instruments designated as hedging instruments for the first quarter of fiscal 2023.

16.                               Reclassifications Out of Accumulated Other Comprehensive Income

The accumulated balances and activities for the three months ended January 1, 2023 and January 2, 2022 related to reclassifications out of accumulated other comprehensive income are summarized as follows (in thousands):

	Three Months Ended
	Foreign Currency Translation Adjustments		Gain (Loss) on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
Balance at October 3, 2021	$	(115,634)	$	(9,394)	$	(125,028)
Other comprehensive income (loss) before reclassifications	(686)		4,032		3,346
Amounts reclassified from accumulated other comprehensive loss
Interest rate contracts, net of tax (1)	—		(1,366)		(1,366)
Net current-period other comprehensive income (loss)	(686)		2,666		1,980
Balance at January 2, 2022	$	(116,320)	$	(6,728)	$	(123,048)
Balance at October 2, 2022	$	(210,556)	$	2,412	$	(208,144)
Other comprehensive income (loss) before reclassifications	33,107		(535)		32,572
Amounts reclassified from accumulated other comprehensive loss
Interest rate contracts, net of tax (1)	—		446		446
Net current-period other comprehensive income (loss)	33,107		(89)		33,018
Balance at January 1, 2023	$	(177,449)	$	2,323	$	(175,126)

(1)    This accumulated other comprehensive component is reclassified to “Interest expense” in our consolidated statements of income. See Note 15 “Derivative Financial Instruments”, for more information.

17.                               Commitments and Contingencies

We are subject to certain claims and lawsuits typically filed against the consulting and engineering profession, alleging primarily professional errors or omissions. We carry professional liability insurance, subject to certain deductibles and policy limits, against such claims. However, in some actions, parties are seeking damages that exceed our insurance coverage or for which we are not insured. While management does not believe that the resolution of these claims will have a material adverse

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effect, individually or in aggregate, on our financial position, results of operations or cash flows, management acknowledges the uncertainty surrounding the ultimate resolution of these matters.

On July 15, 2019, following an initial January 14, 2019 filing, the Civil Division of the United States Attorney's Office filed an amended complaint in intervention in three qui tam actions filed against our subsidiary, Tetra Tech EC, Inc. ("TtEC"), in the U.S. District Court for the Northern District of California. The complaint alleges False Claims Act violations and breach of contract related to TtEC's contracts to perform environmental remediation services at the former Hunters Point Naval Shipyard in San Francisco, California. TtEC disputes the claims and will defend this matter vigorously. We are currently unable to determine the probability of the outcome of this matter or the range of reasonably possible loss, if any.

18.                               Related Party Transactions

We often provide services to unconsolidated joint ventures. Our revenue related to services we provided to unconsolidated joint ventures for the first quarters of fiscal 2023 and 2022 was approximately $23 million and $26 million, respectively. Our related reimbursable costs for the first quarters of fiscal 2023 and 2022 were approximately $22 million and $25 million, respectively. Our consolidated balance sheets also included the following amounts related to these services (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Accounts receivable, net	$	18,376	$	16,818
Contract assets	2,140		2,935
Contract liabilities	3,514		3,464

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Item 2.         Management’s Discussion and Analysis of Financial Condition and Results of Operations

 FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q, including the “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” contains forward-looking statements regarding future events and our future results that are subject to the safe harbor provisions created under the Securities Act of 1933 and the Securities Exchange Act of 1934. All statements other than statements of historical facts are statements that could be deemed forward-looking statements. These statements are based on current expectations, estimates, forecasts and projections about the industries in which we operate and the beliefs and assumptions of our management. Words such as “expects,” “anticipates,” “targets,” “goals,” “projects,” “intends,” “plans,” “believes,” “estimates,” “seeks,” “continues,” “may,” variations of such words, and similar expressions are intended to identify such forward-looking statements. In addition, statements that refer to projections of our future financial performance, our anticipated growth and trends in our businesses, and other characterizations of future events or circumstances are forward-looking statements. Readers are cautioned that these forward-looking statements are only predictions and are subject to risks, uncertainties and assumptions that are difficult to predict, including those identified below under “Part II, Item 1A. Risk Factors,” and elsewhere herein. Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. We undertake no obligation to revise or update publicly any forward-looking statements for any reason.

GENERAL OVERVIEW

Tetra Tech, Inc. is a leading global provider of high-end consulting and engineering services that focuses on water, environment, sustainable infrastructure, renewable energy, and international development. We are a global company that is Leading with Science® to provide innovative solutions for our public and private clients. We typically begin at the earliest stage of a project by identifying technical solutions and developing execution plans tailored to our clients' needs and resources.

Our reputation for high-end consulting and engineering services and our ability to develop solutions for water and environmental management has supported our growth for more than 50 years. Today, we are proud to be making a difference in people’s lives worldwide through our high-end consulting, engineering, and technology service offerings. In fiscal 2022, we worked on over 80,000 projects in more than 100 countries on all seven continents. We are Leading with Science® throughout our operations, with domain experts across multiple disciplines supported by our advanced analytics, artificial intelligence, machine learning and digital technology solutions. Our ability to provide innovative and first-of-kind solutions is enhanced by partnerships with our forward-thinking clients. We are diverse, equitable, and inclusive, embracing the breadth of experience across our talented workforce worldwide with a culture of innovation and entrepreneurship. We are disciplined in our business, and focused on delivering value to customers and high performance for our shareholders. In supporting our clients, we seek to add value and provide long-term sustainable consulting, engineering and technology solutions.

By combining ingenuity and practical experience, we have helped to advance sustainability by managing water, protecting the environment, providing clean energy, restoring ecosystems and engineering green solutions for our cities and communities.

We derive income from fees for professional, technical, program management, and construction management services. As primarily a professional services company, we are labor-intensive rather than capital-intensive. Our revenue is driven by our ability to attract and retain qualified and productive employees, identify business opportunities, secure new and renew existing client contracts, provide outstanding services to our clients and execute projects successfully. We provide services to a diverse base of U.S. state and local government, U.S. federal government, U.S. commercial, and international clients.

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The following table presents the percentage of our revenue by client sector:

	Three Months Ended
	January 1, 2023		January 2, 2022
Client Sector
U.S. state and local government	17.1	%	18.5	%
U.S. federal government (1)	30.9		31.1
U.S. commercial	22.2		20.6
International (2)	29.8		29.8
Total	100.0	%	100.0	%

(1)    Includes revenue generated under U.S. federal government contracts performed outside the United States.

(2)    Includes revenue generated from foreign operations, primarily in Canada, Australia, the United Kingdom, and revenue generated from non-U.S. clients.

We manage our operations under two reportable segments. Our Government Services Group ("GSG") reportable segment primarily includes activities with U.S. government clients (federal, state and local) and all activities with development agencies worldwide. Our Commercial/International Services Group ("CIG") reportable segment primarily includes activities with U.S. commercial clients and international clients other than development agencies.

Government Services Group (“GSG”).  GSG provides high-end consulting and engineering services primarily to U.S. government clients (federal, state and local) and development agencies worldwide. GSG supports U.S. government civilian and defense agencies with services in water, environment, sustainable infrastructure, information technology, and disaster management. GSG also provides engineering design services for U.S. based federal and municipal clients, especially in water infrastructure, flood protection and solid waste. GSG also leads our support for development agencies worldwide, especially in the United States, United Kingdom, and Australia.

Commercial/International Services Group (“CIG”).  CIG primarily provides high-end consulting and engineering services to U.S. commercial clients, and international clients inclusive of the commercial and government sectors. CIG supports commercial clients across the Fortune 500, renewable energy, industrial, high performance buildings, and aerospace markets. CIG also provides sustainable infrastructure and related environmental, engineering and project management services to commercial and local government clients across Canada, in Asia Pacific (primarily Australia and New Zealand), the United Kingdom, as well as Brazil and Chile.

The following table presents the percentage of our revenue by reportable segment:

	Three Months Ended
	January 1, 2023		January 2, 2022
Reportable Segment
GSG	52.7	%	53.1	%
CIG	49.1		48.5
Inter-segment elimination	(1.8)		(1.6)
Total	100.0	%	100.0	%

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Our services are performed under three principal types of contracts with our clients: fixed-price, time-and-materials, and cost-plus. The following table presents the percentage of our revenue by contract type:

	Three Months Ended
	January 1, 2023		January 2, 2022
Contract Type
Fixed-price	36.6	%	38.6	%
Time-and-materials	47.0		46.1
Cost-plus	16.4		15.3
Total	100.0	%	100.0	%

Under fixed-price contracts, clients agree to pay a specified price for our performance of the entire contract or a specified portion of the contract. Under time-and-materials contracts, we are paid for labor at negotiated hourly billing rates and paid for other expenses. Under cost-plus contracts, some of which are subject to a contract ceiling amount, we are reimbursed for allowable costs plus fees, which may be fixed or performance-based. Profitability on these contracts is driven by billable headcount and our cost control. We recognize revenue from contracts using the cost-to-cost measure of progress method to estimate the progress towards completion to determine the amount of revenue and profit to recognize. Changes in those estimates could result in the recognition of cumulative catch-up adjustments to the contract’s inception-to-date revenue, costs and profit in the period in which such changes are made. On a quarterly basis, we review and assess our revenue and cost estimates for each significant contract. Changes in revenue and cost estimates could also result in a projected loss that would be recorded immediately in earnings.

Other contract costs include professional compensation and related benefits, together with certain direct and indirect overhead costs such as rents, utilities, and travel. Professional compensation represents a large portion of these costs. Our "Selling, general and administrative expenses" ("SG&A") are comprised primarily of marketing and bid and proposal costs, and our corporate headquarters’ costs related to the executive offices, finance, accounting, administration, and information technology. Our SG&A expenses also include a portion of stock-based compensation and depreciation of property and equipment related to our corporate headquarters, and the amortization of identifiable intangible assets. Most of these costs are unrelated to specific clients or projects, and can vary as expenses are incurred to support company-wide activities and initiatives.

We experience seasonal trends in our business.  Our revenue and operating income are typically lower in the first half of our fiscal year, primarily due to the Thanksgiving (in the U.S. and Canada), Christmas, and New Year’s holidays. Many of our clients’ employees, as well as our own employees, take vacations during these holiday periods. Further, seasonal inclement weather conditions occasionally cause some of our offices to close temporarily or may hamper our project field work in the northern hemisphere's temperate and arctic regions. These occurrences result in fewer billable hours worked on projects and, correspondingly, less revenue recognized.

ACQUISITIONS AND DIVESTITURES

Acquisitions.  We continuously evaluate the marketplace for acquisition opportunities to further our strategic growth plans. Due to our reputation, size, financial resources, geographic presence and range of services, we have numerous opportunities to acquire privately and publicly held companies or selected portions of such companies. We evaluate an acquisition opportunity based on its ability to strengthen our leadership in the markets we serve, the technologies and solutions they provide, and the additional new geographies and clients they bring. Also, during our evaluation, we examine an acquisition's ability to drive organic growth, its accretive effect on long-term earnings, and its ability to generate return on investment. Generally, we proceed with an acquisition if we believe that it will strategically expand our service offerings, improve our long-term financial performance, and increase shareholder returns.

We view acquisitions as a key component in the execution of our growth strategy, and we intend to use cash, debt or equity, as we deem appropriate, to fund acquisitions. We may acquire other businesses that we believe are synergistic and will ultimately increase our revenue and net income, strengthen our ability to achieve our strategic goals, provide critical mass with existing clients and further expand our lines of service. We typically pay a purchase price that results in the recognition of goodwill, generally representing the intangible value of a successful business with an assembled workforce specialized in our areas of interest. Acquisitions are inherently risky, and no assurance can be given that our previous or future acquisitions will be successful or will not have a material adverse effect on our financial position, results of operations, or cash flows. All

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acquisitions require the approval of our Board of Directors. For detailed information regarding acquisitions, see Note 4, “Acquisitions” of the “Notes to Consolidated Financial Statements”.

Divestitures.  We regularly review and evaluate our existing operations to determine whether our business model should change through the divestiture of certain businesses. Accordingly, from time to time, we may divest or wind-down certain non-core businesses and reallocate our resources to businesses that better align with our long-term strategic direction.

OVERVIEW OF RESULTS AND BUSINESS TRENDS

General. In the first quarter of fiscal 2023, revenue increased 4.2% compared to the prior-year quarter. This year-over-year growth reflects increased activity in all of our client sectors.

U.S. Federal Government.  Our U.S. federal government revenue increased 3.5% in the first quarter of fiscal 2023 compared to the same quarter last year. This increase was primarily due to more international development and environmental activities. During periods of economic volatility, our U.S. federal government business has historically been the most stable and predictable. We expect our U.S. federal government revenue to continue to grow in the remainder of fiscal 2023. Approximately $1 trillion in new U.S. federal funding passed in 2021 through the Infrastructure Investment and Jobs Act, the Inflation Reduction Act and the CHIPS and Science Act. Each of these programs include substantial planned investments in our key end markets including water, environment and sustainable infrastructure over the next five to ten years.

U.S. State and Local Government.  Our U.S. state and local government revenue decreased 3.7% in the first quarter of fiscal 2023 compared to the same quarter last year due to lower disaster response activity. Excluding disaster response, our state and local government revenue increased approximately 10% in the first quarter of fiscal 2023 compared to last year's first quarter. The increase reflects continued broad-based growth in our U.S. state and local government infrastructure business, particularly with increased revenue from municipal water infrastructure work, including digital water projects. Most of our work for the U.S. state and local governments relates to critical water and environmental programs, which we expect to continue to grow in the remainder of fiscal 2023.

U.S. Commercial.  Our U.S. commercial revenue increased 12.5% in the first quarter of fiscal 2023 compared to the same quarter last year. This increase was primarily due to more activity on environmental and renewable energy programs, including meeting net zero carbon goals and designing high performance buildings. We expect growth in our U.S. commercial work to continue in the remainder of fiscal 2023.

International.  Our international revenue increased 4.2% in the first quarter of fiscal 2023 compared to the same quarter last year despite the adverse impact of a stronger U.S. dollar and the adverse impact on our foreign currency translation year-over-year. On a constant currency basis, our international revenue increased approximately 14% in the first quarter of fiscal 2023 compared to the first quarter of 2022. This revenue growth reflects government stimulus spending on infrastructure and commercial activities related to an increased focus on sustainability. We expect growth in our international work to continue in the remainder of fiscal 2023.

Subsequent Events. On January 3, 2023, we acquired Amyx, Inc. (“Amyx”), an enterprise technology services, cybersecurity and management consulting firm. Based in Reston, Virginia, Amyx, with over 500 employees, provides application modernization, cybersecurity, systems engineering, financial management, and program management support on over 30 Federal Government programs. Amyx will be included in our GSG segment.

On September 23, 2022, we made an all cash offer to acquire all the outstanding shares of RPS Group plc ("RPS"), a publicly traded company on the London Stock Exchange for 222 pence per share, through a scheme of arrangement, which was unanimously recommended by RPS's Board of Directors. On November 3, 2022, RPS's shareholders approved the scheme of arrangement. On January 19, 2023, the court sanctioned scheme of arrangement to purchase RPS was approved, and we completed the acquisition on January 23, 2023. The total purchase price including assumed debt and transactions costs was approximately GBP 714 million. RPS employs approximately 5,000 associates in the United Kingdom, Europe, Asia Pacific and North America, delivering high-end solutions, especially in energy transformation, water and program management for government and commercial clients. Substantially all of RPS will be included in our CIG segment.

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RESULTS OF OPERATIONS

Consolidated Results of Operations

	Three Months Ended
	January 1, 2023		January 2, 2022		Change
					$		%
	($ in thousands, except per share data)
Revenue	$	894,766	$	858,510	$	36,256	4.2%
Subcontractor costs	(158,204)		(179,177)		20,973		11.7
Revenue, net of subcontractor costs (1)	736,562		679,333		57,229		8.4
Other costs of revenue	(583,316)		(539,567)		(43,749)		(8.1)
Gross profit	153,246		139,766		13,480		9.6
Selling, general and administrative expenses	(56,502)		(52,546)		(3,956)		(7.5)
Acquisition and integration expenses	(3,761)		—		(3,761)		NM
Contingent consideration - fair value adjustments	(933)		—		(933)		NM
Income from operations	92,050		87,220		4,830		5.5
Interest expense	(5,372)		(2,904)		(2,468)		(85.0)
Other non-operating income	67,995		—		67,995		NM
Income before income tax expense	154,673		84,316		70,357		83.4
Income tax expense	(37,958)		(15,817)		(22,141)		(140.0)
Net income	116,715		68,499		48,216		70.4
Net income attributable to noncontrolling interests	(9)		(10)		1		10.0
Net income attributable to Tetra Tech	$	116,706	$	68,489	$	48,217	70.4
Diluted earnings per share	$	2.18	$	1.25	$	0.93	74.4%

(1)    We believe that the presentation of “Revenue, net of subcontractor costs”, which is a non-U.S. GAAP financial measure, enhances investors’ ability to analyze our business trends and performance because it substantially measures the work performed by our employees. While providing services, we routinely subcontract various services and, under certain U.S. Agency for International Development programs, issue grants. Generally, these subcontractor costs and grants are passed through to our clients and, in accordance with U.S. GAAP and industry practice, are included in our revenue when it is our contractual responsibility to procure or manage these activities. The grants are included as part of our subcontractor costs. Because subcontractor services can vary significantly from project to project and period to period, changes in revenue may not necessarily be indicative of our business trends. Accordingly, we segregate subcontractor costs from revenue to promote a better understanding of our business by evaluating revenue exclusive of costs associated with external service providers.

In the first quarter of fiscal 2023, revenue and revenue, net of subcontractor costs, increased $36.3 million, or 4.2%, and $57.2 million, or 8.4%, respectively, compared to the same period in fiscal 2022. On a constant currency basis, our revenue, and revenue, net of subcontractor costs, increased approximately 7% and 12%, respectively, in the first quarter of fiscal 2023 compared to the first quarter of fiscal 2022. The aforementioned adverse year-over-year foreign exchange rates primarily impacted our CIG segment. Our GSG segment's revenue and revenue, net of subcontractor costs, increased $15.0 million, or 3.3%, and $26.0 million, or 7.9%, respectively, in the first quarter of fiscal 2023 compared to last year's first quarter. Our CIG segment's revenue increased $23.3 million, or 5.6%, and revenue, net of subcontractor costs, increased $31.3 million, or 8.9% in the first quarter of fiscal 2023 compared to the year-ago quarter. The first quarter fiscal 2023 results for GSG and CIG segments are described below under "Government Services Group" and "Commercial/International Services Group", respectively.

The following table reconciles our reported results to non-U.S. GAAP adjusted results, which exclude acquisition expenses related to the RPS acquisition and losses from adjustments to contingent consideration liabilities in the first quarter of fiscal 2023 and a non-operating benefit from Employee Retention Credits ("ERC's") received in the first quarter of fiscal 2022. Our adjusted earnings per share ("EPS") for the first quarter fiscal 2023 also excludes a non-operating $68.0 million unrealized gain on a foreign exchange contract and the write-off of previously deferred debt origination fees both related to our planned acquisition of RPS. This gain is reported as "Other non-operating income" in our Consolidated Statement of Income for the first quarter of fiscal 2023. The effective tax rates applied to the adjustments to EPS to arrive at adjusted EPS average 26% for both fiscal 2023 and 2022. We applied the relevant marginal statutory tax rate based on the nature of the adjustments and the tax jurisdiction in which it occurred. Both EPS and adjusted EPS were calculated using diluted weighted-average common shares outstanding for the respective periods as reflected in our consolidated statements of income.

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	Three Months Ended
	January 1, 2023		January 2, 2022		Change
					$		%
	($ in thousands, except per share data)
Income from operations	$	92,050	$	87,220	$	4,830	5.5%
COVID-19 Credits	—		(4,451)		4,451		NM
Acquisition & integration expenses	3,761		—		3,761		NM
Earn-Out adjustments	933		—		933		NM
Adjusted income from operations (1)	$	96,744	$	82,769	$	13,975	16.9%
EPS	$	2.18	$	1.25	$	0.93	74.4%
COVID-19 Credits	—		(0.06)		0.06		NM
Acquisition & integration expenses	0.05		—		0.05		NM
Earn-out adjustments	0.01		—		0.01		NM
Debt origination cost	0.04		—		0.04		NM
Foreign exchange forward contract gain	(0.94)		—		(0.94)		NM
Adjusted EPS (1)	$	1.34	$	1.19	$	0.15	12.6%

NM = not meaningful

(1)     Non-GAAP financial measure

Operating income increased $4.8 million, or 5.5%, in the first quarter of fiscal 2023 compared to the first quarter of fiscal 2022. The first quarter fiscal 2023 results include $3.8 million of acquisition expenses (primarily legal-related) for the RPS acquisition and losses of $0.9 million related to changes in the estimated fair value of contingent earn-out liabilities. The first quarter fiscal 2022 results included the benefit of ERC's totaling $4.5 million, which represents reimbursement from the U.S. federal government under the Coronavirus Aid, Relief and Economic Security Act for the costs that we incurred during the second quarter of fiscal 2020 to address the COVID-19 pandemic. These amounts were recognized in fiscal 2022 when the funds were received due to the uncertainty related to the computation of qualifying amounts and delayed processing times for our application. These amounts were primarily reflected as a reduction to "Other costs of revenue" in our Consolidated Statement of Income and an increase to "Net cash provided by operating activities" in our Consolidated Statement of Cash Flows for fiscal 2022, consistent with the presentation of the related costs recognized in the second quarter of fiscal 2020.

Excluding the acquisition expenses, earn-out losses and the ERC's our adjusted operating income increased $14.0 million, or 16.9% in the first quarter of fiscal 2023 compared to the same quarter last year. These increases reflect improved results in both GSG and CIG segments, which are described below under "Government Services Group" and "Commercial/International Services Group", respectively.

Our net interest expense was $5.4 million in the first quarter of fiscal 2023 compared to $2.9 million in the prior-year quarter. Net interest expense in the first quarter of fiscal 2023 includes $2.7 million of additional expense for the write-off of previously deferred debt origination fees due to the cancellation of the bridge loan facility we entered into to support our offer to acquire RPS, which was replaced with an amendment to our existing debt facility.

Other non-operating income of $68.0 million in the first quarter of fiscal 2023 reflects an unrealized gain on a foreign exchange forward contract integrated with the acquisition of RPS. Although an effective economic hedge of our foreign exchange risk related to this transaction, the forward contract does not qualify for hedge accounting. As a result, the forward contract is marked-to-market with changes in fair value recognized in earnings each period. The forward contract was settled on January 23, 2023, together with the closing of the RPS acquisition, with a cumulative gain of approximately $109 million.

The effective tax rates for the first quarters of fiscal 2023 and 2022 were 24.5% and 18.8%, respectively. Income tax expense was reduced by $1.7 million and $4.5 million of excess tax benefits on share-based payments in the first quarters of fiscal 2023 and 2022, respectively. Excluding the impact of the excess tax benefits on share-based payments, our effective tax rates in the first quarters of fiscal 2023 and 2022 were 25.7% and 24.1%, respectively.

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Our EPS was $2.18 in the first quarter of fiscal 2023 compared to $1.25 in the first quarter of fiscal 2022. Excluding the aforementioned non-operating and non-recurring items, our adjusted EPS was $1.34 in the first quarter of fiscal 2023 compared to $1.19 in the year-ago quarter, an increase of 12.6%.

Segment Results of Operations

Government Services Group

	Three Months Ended
	January 1, 2023		January 2, 2022		Change
					$		%
	($ in thousands)
Revenue	$	471,067	$	456,099	$	14,968	3.3%
Subcontractor costs	(118,020)		(129,004)		10,984		8.5
Revenue, net of subcontractor costs	$	353,047	$	327,095	$	25,952	7.9
Income from operations	$	60,347	$	51,179	$	9,168	17.9%

Revenue and revenue, net of subcontractor costs, increased $15.0 million, or 3.3%, and increased $26.0 million, or 7.9%, respectively, in the first quarter of fiscal 2023 compared to the first quarter of fiscal 2022. The increases primarily reflect higher U.S. state and local government activities related to digital water and federal programs for civilian agencies, partially offset by lower disaster response revenue.

Operating income increased $9.2 million, or 17.9%, in the first quarter of fiscal 2023 compared to last year's first quarter. The fiscal 2023 results included favorable operating income adjustments for several projects upon their completion. Last year's first quarter results included $3.1 million of the aforementioned ERC's. Our operating margin, based on revenue, net of subcontractor costs, improved to 17.1% in the first quarter of fiscal 2023 compared to 15.6% in the first quarter of fiscal 2022. Excluding the favorable project adjustments in the first quarter of this year and last year's ERC's, our operating margin was 15.0% in the first quarter of fiscal 2023 compared to 14.7% in the same period last year. The improved operating margin in fiscal 2023 was primarily due to our increased focus on high-end consulting services, including digital water.

Commercial/International Services Group

	Three Months Ended
	January 1, 2023		January 2, 2022		Change
					$		%
	($ in thousands)
Revenue	$	439,556	$	416,286	$	23,270	5.6%
Subcontractor costs	(56,041)		(64,048)		8,007		12.5
Revenue, net of subcontractor costs	$	383,515	$	352,238	$	31,277	8.9
Income from operations	$	50,108	$	45,308	$	4,800	10.6%

Revenue and revenue, net of subcontractor costs, increased $23.3 million, or 5.6%, and increased $31.3 million, or 8.9%, respectively, in the first quarter of fiscal 2023 compared to the first quarter of fiscal 2022. On a constant currency basis, revenue and revenue, net of subcontractor costs, increased 10.9% and 14.8%, respectively, in the first quarter of fiscal 2023 compared to the same period last year. The revenue growth primarily reflects increased activity on high performance buildings and renewable energy.

Operating income increased $4.8 million, or 10.6%, in the first quarter of fiscal 2023 compared to the first quarter of fiscal 2022. The fiscal 2022 operating income included $1.4 million of the aforementioned ERC's. Excluding this benefit, operating income increased 14.0% in the first quarter of fiscal 2023 compared to last year's first quarter. Our operating margin, based on revenue, net of subcontractor costs, improved to 13.1% in the first quarter of fiscal 2023 compared to 12.9% in the first quarter of fiscal 2022. Excluding the ERC's, our operating margin was 12.5% in the first quarter of fiscal 2022. The

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improved operating margin was primarily due to our increased focus on high-end consulting services, project execution and labor utilization.

Backlog

Backlog generally represents the dollar amount of revenues we expect to realize in the future when we perform the work. The difference between remaining unsatisfied performance obligations ("RUPO") and backlog relates to contract terms. Specifically, our backlog does not consider the impact of termination for convenience clauses within the contracts. The contract term and thus remaining performance obligation on certain of our operations and maintenance contracts, are limited to the notice period required for contract termination (usually 30, 60, or 90 days). At January 1, 2023 and October 2, 2022, the differences between our backlog and RUPO of $3.8 billion for each period were immaterial.

Financial Condition, Liquidity and Capital Resources

Capital Requirements.  At January 1, 2023, we had $164.4 million of cash and cash equivalents and access to an additional $1.30 billion of borrowings available under our amended credit facility described below. During the first three months of fiscal 2023, we generated $25.2 million of cash from operations. Our primary sources of liquidity are cash flows from operations and borrowings under our credit facilities. Our primary uses of cash are to fund working capital, stock repurchases, cash dividends, capital expenditures and repayment of debt, as well as to fund acquisitions and earn-out obligations from prior acquisitions. We believe that our existing cash and cash equivalents, operating cash flows and borrowing capacity under our credit agreement as amended in the anticipation of our planned acquisition of RPS in the second quarter of fiscal 2023, as described below, will be sufficient to meet our capital requirements for at least the next 12 months.

We use a variety of tax planning and financing strategies to manage our worldwide cash and deploy funds to locations where they are needed. We currently have no need or plans to repatriate undistributed foreign earnings, other than from Canada, in the foreseeable future; however, this could change due to varied economic circumstances.

On October 5, 2021, our Board of Directors authorized a new stock repurchase program under which we could repurchase up to $400 million of our common stock. In the first quarter of fiscal 2023, we did not repurchase any shares of our common stock. At January 1, 2023, we had a remaining balance of $347.8 million under our stock repurchase program.

On November 7, 2022, our Board of Directors declared a quarterly cash dividend of $0.23 per share payable on December 9, 2022 to stockholders of record as of the close of business on November 21, 2022.

Subsequent Event.  On January 30, 2023, our Board of Directors declared a quarterly cash dividend of $0.23 per share payable on February 24, 2023 to stockholders of record as of the close of business on February 13, 2023.

Cash Equivalents and Restricted Cash.  At January 1, 2023, our cash equivalents and restricted cash were $172.2 million, a decrease of $13.3 million compared to the fiscal 2022 year-end. The decrease was primarily due to payments on dividends and taxes on vested restricted stock, partially offset by cash provided by operating activities.

Operating Activities.  For the first quarter of fiscal 2023, net cash provided by operating activities was $25.2 million, a decrease of $57.2 million compared to the prior-year period. The decrease was primarily due to the timing of payments to our vendors and employees.

Investing Activities.  For the first quarter of fiscal 2023, net cash used in investing activities was $4.9 million, a decrease of $1.9 million compared to the prior-year period. The decrease was due to a payment related to an acquisition in the first quarter of fiscal 2022.

Financing Activities.  For the first quarter of fiscal 2023, net cash used in financing activities was $42.3 million, an increase of $5.9 million compared to fiscal 2022 quarter. The financing activities in the first quarter of fiscal 2023 primarily consisted of payments on dividends and taxes on vested restricted stock, and a net repayment of debt.

Debt Financing. On October 26, 2022, we entered into a Third Amended and Restated Credit Agreement that provides for an additional $500 million senior secured term loan facility (the "New Term Loan Facility") increasing our total borrowing capacity to $1.55 billion.

Subsequent Event. We drew the entire amount of the New Term Loan Facility to partially finance the acquisition of RPS in January 2023. The remaining cash payments for the initial purchase price for RPS, including transaction fees and the retirement of RPS's existing debt, and Amyx, which totaled approximately $380 million, was financed with borrowings under

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the existing Amended Revolving Credit Facility. The New Term Loan Facility is not subject to any amortization payments of principal and matures on the third anniversary of the RPS acquisition closing date.

On February 18, 2022, we entered into Amendment No. 2 to our Second Amended and Restated Credit Agreement (“Amended Credit Agreement”) with a total borrowing capacity of $1.05 billion that will mature in February 2027. The Amended Credit Agreement is a $750 million senior secured, five-year facility that provides for a $250 million term loan facility (the “Amended Term Loan Facility”) and a $500 million revolving credit facility (the “Amended Revolving Credit Facility”). In addition, the Amended Credit Agreement includes a $300 million accordion feature that allows us to increase the Amended Credit Agreement to $1.05 billion subject to lender approval. The Amended Credit Agreement provides for, among other things, (i) refinance indebtedness under our Credit Agreement dated as of July 30, 2018; (ii) finance open market repurchases of common stock, acquisitions and cash dividends and distributions; and (iii) utilize the proceeds for working capital, capital expenditures and other general corporate purposes. The Amended Credit Agreement provides for a reduction in the interest grid for meeting certain sustainability targets related to the (i) reduction of greenhouse gas emissions through the Company’s projects and operational sustainability initiatives and (ii) improvement of peoples’ lives as a result of the Company’s projects that provide environmental, social and governance benefits. The Amended Revolving Credit Facility includes a $100 million sublimit for the issuance of standby letters of credit, a $20 million sublimit for swingline loans and a $300 million sublimit for multicurrency borrowings and letters of credit.

The entire Amended Term Loan Facility was drawn on February 18, 2022. The Amended Term Loan Facility is subject to quarterly amortization of principal at 5% annually commencing June 30, 2022. We may borrow on the Amended Revolving Credit Facility, at our option, at either (a) a benchmark rate plus a margin that ranges from 1.000% to 1.875% per annum, or (b) a base rate for loans in U.S. dollars (the highest of the U.S. federal funds rate plus 0.50% per annum, the bank’s prime rate or the Secured Overnight Financing Rate ("SOFR") rate plus 1.00%, plus a margin that ranges from 0% to 0.875% per annum. In each case, the applicable margin is based on our Consolidated Leverage Ratio, calculated quarterly. The Amended Term Loan Facility is subject to the same interest rate provisions. The Amended Credit Agreement expires on February 18, 2027, or earlier at our discretion upon payment in full of loans and other obligations.

At January 1, 2023, we had $240.6 million. in outstanding borrowings under the Amended Credit Agreement, which was comprised of $240.6 million under the Amended Term Loan Facility and no borrowings under the Amended Revolving Credit Facility. The year-to-date weighted-average interest rate of the outstanding borrowings during January 1, 2023 is 4.87%. In addition, we had $0.7 million in standby letters of credit under the Amended Credit Agreement. Our year-to-date weighted-average interest rate on borrowings outstanding under the Amended Credit Agreement, including the effects of interest rate swap agreements described in Note 15, “Derivative Financial Instruments” of the “Notes to Consolidated Financial Statements”, was 4.19%. At January 1, 2023, we had $499.3 million of available credit under the Amended Revolving Credit Facility, all of which could be borrowed without a violation of our debt covenants.

The Amended Credit Agreement contains certain affirmative and restrictive covenants, and customary events of default. The financial covenants provide for a maximum Consolidated Leverage Ratio of 3.25 to 1.00 (total funded debt/EBITDA, as defined in the Amended Credit Agreement) and a minimum Consolidated Interest Coverage Ratio of 3.00 to 1.00 (EBITDA/Consolidated Interest Charges, as defined in the Amended Credit Agreement). Our obligations under the Amended Credit Agreement are guaranteed by certain of our domestic subsidiaries and are secured by first priority liens on (i) the equity interests of certain of our subsidiaries, including those subsidiaries that are guarantors or borrowers under the Amended Credit Agreement, and (ii) the accounts receivable, general intangibles and intercompany loans, and those of our subsidiaries that are guarantors or borrowers. At January 1, 2023, we were in compliance with these covenants with a consolidated leverage ratio of 0.71x and a consolidated interest coverage ratio of 24.57x.

In addition to the Amended Credit Agreement, we maintain other credit facilities, which may be used for short-term cash advances and bank guarantees. At January 1, 2023, there were $5.9 million under these facilities, and the aggregate amount of standby letters of credit outstanding was $45.8 million. At January 1, 2023, we had no bank overdrafts related to our disbursement bank accounts.

Inflation.  We believe our operations have not been, and, in the foreseeable future, are not expected to be, materially adversely affected by inflation or changing prices due to the average duration of our projects and our ability to negotiate prices as contracts end and new contracts begin.

Dividends.  Our Board of Directors has authorized the following dividends in fiscal 2023:

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	Dividend  Per Share		Record Date	Total Maximum Payment (in thousands)		Payment Date
November 7, 2022	$	0.23	November 21, 2022	$	12,186	December 9, 2022
January 30, 2023	$	0.23	February 13, 2023	N/A		February 24, 2023

Income Taxes

We evaluate the realizability of our deferred tax assets by assessing the valuation allowance and adjust the allowance, if necessary. The factors used to assess the likelihood of realization are our forecast of future taxable income and available tax planning strategies that could be implemented to realize the net deferred tax assets. The ability or failure to achieve the forecasted taxable income in the applicable taxing jurisdictions could affect the ultimate realization of deferred tax assets. Based on projected future operating results in certain jurisdictions, it is unlikely that the current valuation allowance positions of those jurisdictions could be adjusted in the next 12 months.

At January 1, 2023 and October 2, 2022, the liability for income taxes associated with uncertain tax positions was $10.8 million and $10.6 million, respectively. 

It is reasonably possible that the amount of the unrecognized benefit with respect to certain of our unrecognized tax positions may significantly decrease within the next 12 months. These liabilities represent our current estimates of the additional tax liabilities that we may be assessed when the related audits are concluded. If these audits are resolved in a manner more unfavorable than our current expectations, our additional tax liabilities could be materially higher than the amounts currently recorded resulting in additional tax expense.

Off-Balance Sheet Arrangements

In the ordinary course of business, we may use off-balance sheet arrangements if we believe that such arrangements would be an efficient way to lower our cost of capital or help us manage the overall risks of our business operations. We do not believe that such arrangements have had a material adverse effect on our financial position or our results of operations.

The following is a summary of our off-balance sheet arrangements:

•Letters of credit and bank guarantees are used primarily to support project performance and insurance programs. We are required to reimburse the issuers of letters of credit and bank guarantees for any payments they make under the outstanding letters of credit or bank guarantees. Our Amended Credit Agreement and additional letter of credit facilities cover the issuance of our standby letters of credit and bank guarantees and are critical for our normal operations. If we default on the Amended Credit Agreement or additional credit facilities, our inability to issue or renew standby letters of credit and bank guarantees would impair our ability to maintain normal operations. At January 1, 2023, we had $0.7 million in standby letters of credit outstanding under our Amended Credit Agreement and $45.8 million in standby letters of credit outstanding under our additional letter of credit facilities.

•From time to time, we provide guarantees and indemnifications related to our services. If our services under a guaranteed or indemnified project are later determined to have resulted in a material defect or other material deficiency, then we may be responsible for monetary damages or other legal remedies. When sufficient information about claims on guaranteed or indemnified projects is available and monetary damages or other costs or losses are determined to be probable, we recognize such guaranteed losses.

•In the ordinary course of business, we enter into various agreements as part of certain unconsolidated subsidiaries, joint ventures and other jointly executed contracts where we are jointly and severally liable. We enter into these agreements primarily to support the project execution commitments of these entities. The potential payment amount of an outstanding performance guarantee is typically the remaining cost of work to be performed by or on behalf of third parties under engineering and construction contracts. However, we are not able to estimate other amounts that may be required to be paid in excess of estimated costs to complete contracts and, accordingly, the total potential payment amount under our outstanding performance guarantees cannot be estimated. For cost-plus contracts, amounts that may become payable pursuant to guarantee provisions are normally recoverable from the client for work performed under the contract. For lump sum or fixed-price contracts, this amount is the cost to complete the contracted work less amounts remaining to be billed to the client under the contract. Remaining billable amounts could be greater or less than the cost to complete. In those

30

cases where costs exceed the remaining amounts payable under the contract, we may have recourse to third parties, such as owners, co-venturers, subcontractors or vendors, for claims.

•In the ordinary course of business, our clients may request that we obtain surety bonds in connection with contract performance obligations that are not required to be recorded in our consolidated balance sheets. We are obligated to reimburse the issuer of our surety bonds for any payments made thereunder. Each of our commitments under performance bonds generally ends concurrently with the expiration of our related contractual obligation.

Critical Accounting Policies

Our critical accounting policies are disclosed in our Annual Report on Form 10-K for the fiscal year ended October 2, 2022. To date, there have been no material changes in our critical accounting policies as reported in our 2022 Annual Report on Form 10-K.

New Accounting Pronouncements

For information regarding recent accounting pronouncements, see “Notes to Consolidated Financial Statements” included in Part I, Item 1 of this Quarterly Report.

Financial Market Risks

We do not enter into derivative financial instruments for trading or speculation purposes. In the normal course of business, we have exposure to both interest rate risk and foreign currency transaction and translation risk, primarily related to the Canadian and Australian dollar, and British Pound.

We are exposed to interest rate risk under our Amended Credit Agreement. We can borrow, at our option, under both the Amended Term Loan Facility and Amended Revolving Credit Facility. We may borrow on the Amended Revolving Credit Facility, at our option, at either (a) a Eurocurrency rate plus a margin that ranges from 1.000% to 1.875% per annum, or (b) a base rate for loans in U.S. dollars (the highest of the U.S. federal funds rate plus 0.50% per annum, the bank’s prime rate or the SOFR rate plus 1.00%) plus a margin that ranges from 0% to 0.875% per annum. In each case, the applicable margin is based on our Consolidated Leverage Ratio, calculated quarterly. The Amended Term Loan Facility is subject to the same interest rate provisions. Borrowings at the base rate have no designated term and may be repaid without penalty any time prior to the Facility’s maturity date. Borrowings at a SOFR rate have a term no less than 30 days and no greater than 180 days and may be prepaid without penalty. Typically, at the end of such term, such borrowings may be rolled over at our discretion into either a borrowing at the base rate or a borrowing at a SOFR rate with similar terms, not to exceed the maturity date of the Facility. The Facility matures on February 18, 2027. At January 1, 2023, we had $240.6 million in outstanding borrowings under the Amended Credit Agreement, which was comprised of $240.6 million under the Amended Term Loan Facility and no borrowings under the Amended Revolving Credit Facility. The year-to-date weighted-average interest rate of the outstanding borrowings during fiscal 2023 was 4.87%.

In August 2018, we entered into five interest rate swap agreements with five banks to fix the variable interest rate on $250 million of our Amended Term Loan Facility. The objective of these interest rate swaps was to eliminate the variability of our cash flows on the amount of interest expense we pay under our Credit Agreement. At January 1, 2023, the notional principal of our outstanding interest swap agreements was $196.9 million ($39.4 million each.) Our year-to-date average effective interest rate on borrowings outstanding under the Credit Agreement, including the effects of interest rate swap agreements, at January 1, 2023, was 4.19%. For more information, see Note 15, “Derivative Financial Instruments” of the “Notes to Consolidated Financial Statements”.

Most of our transactions are in U.S. dollars; however, some of our subsidiaries conduct business in foreign currencies, primarily the Canadian and Australian dollar, and British Pound. Therefore, we are subject to currency exposure and volatility because of currency fluctuations. We attempt to minimize our exposure to these fluctuations by matching revenue and expenses in the same currency for our contracts. We report our foreign currency gains and losses in “Selling, general and administrative expenses” on our consolidated statements of income. The impact of the foreign currency was immaterial for the first quarters of fiscal 2023 and 2022.

We have foreign currency exchange rate exposure in our results of operations and equity primarily because of the currency translation related to our foreign subsidiaries where the local currency is the functional currency. To the extent the U.S. dollar strengthens against foreign currencies, the translation of these foreign currency denominated transactions will result in reduced revenue, operating expenses, assets and liabilities. Similarly, our revenue, operating expenses, assets and liabilities will increase if the U.S. dollar weakens against foreign currencies. For the first quarters of fiscal 2023 and 2022, 29.8% and

31

29.8% of our consolidated revenue, respectively, was generated by our international business. For the first quarter of fiscal 2023, the effect of foreign exchange rate translation on the consolidated balance sheets was an increase in our equity by $33.1 million compared to a decrease in equity of $0.7 million in the first quarter of fiscal 2022. These amounts were recognized as adjustments to equity through other comprehensive income.

Item 3.           Quantitative and Qualitative Disclosures about Market Risk

Please refer to the information we have included under the heading “Financial Market Risks” in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in Item 2 of this Form 10-Q which is incorporated herein by reference.

Item 4.           Controls and Procedures

Evaluation of disclosure controls and procedures and changes in internal control over financial reporting.  At January 1, 2023, we carried out an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures. Based on our management’s evaluation (with the participation of our principal executive officer and principal financial officer), our principal executive officer and principal financial officer have concluded that, as of the end of the period covered by this report, our disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act), were effective.

Changes in internal control over financial reporting.  There were no changes in our internal control over financial reporting that occurred during the quarter ended January 1, 2023 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II.               OTHER INFORMATION

Item 1.           Legal Proceedings

For information regarding legal proceedings, see Note 17, "Commitments and Contingencies" included in the "Notes to Consolidated Financial Statements" included in Part I, Item 1 of this Form 10-Q which is incorporated herein by reference.

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Item 1A.                Risk Factors

There have been no material changes in our risk factors disclosed in Part I, Item 1A in our 2022 Annual Report on Form 10-K. For updated disclosures related to interest and exchange rate risks, see “Financial Market Risks” in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in Item 2 of this Form 10-Q which is incorporated herein by reference.

Item 2.                                                         Unregistered Sales of Equity Securities and Use of Proceeds

On October 5, 2021, our Board of Directors authorized a new stock repurchase program under which we could repurchase up to $400 million of our common stock. In the first quarter of fiscal 2023, we did not repurchase any shares of our common stock. At January 1, 2023, we had a remaining balance of $347.8 million under our stock repurchase program.

Item 4.                                                         Mine Safety Disclosures

Section 1503 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the "Dodd-Frank Act") requires domestic mine operators to disclose violations and orders issued under the Mine Act by Mine Safety and Health Administration. We do not act as the owner of any mines, but we may act as a mining operator as defined under the Mine Act where we may be an independent contractor performing services or construction at such mine. Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Act and Item 104 of Regulation S-K is included in Exhibit 95.

Item 6.                                                         Exhibits

The following documents are filed as Exhibits to this Report:

31.1	Chief Executive Officer Certification pursuant to Rule 13a-14(a)/15d-14(a).
31.2	Chief Financial Officer Certification pursuant to Rule 13a-14(a)/15d-14(a).
32.1	Certification of Chief Executive Officer pursuant to Section 1350.
32.2	Certification of Chief Financial Officer pursuant to Section 1350.
95	Mine Safety Disclosure.
101	The following financial information from our Company’s Quarterly Report on Form 10-Q, for the period ended January 1, 2023, formatted in Inline eXtensible Business Reporting Language: (i) Consolidated Balance Sheets (ii) Consolidated Statements of Income, (iii) Consolidated Statements of Comprehensive Income, (iv) Consolidated Statements of Cash Flows, (v) Consolidated Statements of Equity, (vi) Notes to Consolidated Financial Statements.
104	Cover Page Interactive Date File (formatted as Inline XBRL and contained in Exhibit 101).

33

SIGNATURES

    Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

 

Dated: February 3, 2023	TETRA TECH, INC.
	By:	/s/ DAN L. BATRACK
		Dan L. Batrack
		Chairman and Chief Executive Officer
		(Principal Executive Officer)
	By:	/s/ STEVEN M. BURDICK
		Steven M. Burdick
		Executive Vice President, Chief Financial Officer
		(Principal Financial Officer)
	By:	/s/ BRIAN N. CARTER
		Brian N. Carter
		Senior Vice President, Corporate Controller
		(Principal Accounting Officer)

34

EX-31.1

Exhibit 31.1

Chief Executive Officer Certification Pursuant to

Rule 13a-14(a)/15d-14(a)

I, Dan L. Batrack, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Tetra Tech, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: February 3, 2023   

/s/ Dan L. Batrack

Dan L. Batrack

Chairman, Chief Executive Officer and President

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

Chief Financial Officer Certification Pursuant to

Rule 13a-14(a)/15d-14(a)

I, Steven M. Burdick, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Tetra Tech, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: February 3, 2023 

/s/ Steven M. Burdick

Steven M. Burdick

Chief Financial Officer

(Principal Financial Officer)

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer Pursuant to

Section 1350

In connection with the Quarterly Report of Tetra Tech, Inc. (the “Company”) on Form 10-Q for the quarterly period ended January 1, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dan L. Batrack, Chief Executive Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.The Report fully complies with requirements of Section 13(a) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Dan L. Batrack

Dan L. Batrack

Chairman, Chief Executive Officer and President

February 3, 2023

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Tetra Tech, Inc. and will be retained by Tetra Tech, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

The foregoing certification is being furnished to the Securities and Exchange Commission as an exhibit to the Form 10-Q and shall not be considered filed as part of the Form 10-Q.

EX-32.2

Exhibit 32.2

Certification of Chief Financial Officer Pursuant to

Section 1350

In connection with the Quarterly Report of Tetra Tech, Inc. (the “Company”) on Form 10-Q for the quarterly period ended January 1, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven M. Burdick, Chief Financial Officer and Treasurer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.The Report fully complies with requirements of Section 13(a) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Steven M. Burdick

Steven M. Burdick

Chief Financial Officer

February 3, 2023

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Tetra Tech, Inc. and will be retained by Tetra Tech, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

The foregoing certification is being furnished to the Securities and Exchange Commission as an exhibit to the Form 10-Q and shall not be considered filed as part of the Form 10-Q.

EX-95

Exhibit 95

MINE SAFETY DISCLOSURES

The following table shows, for each project performed at U.S. mines that is subject to the Federal Mine Safety and Health Act of 1977 (“MSHA”), the information required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K. Section references are to sections of MSHA.

3 Month Period Ending January 1, 2023	Tetra Tech, Inc.
Alleged violations of mandatory health or safety standards that could significantly and substantially contribute to the cause and effect of a mine safety or health hazard (#)	0
Section 104(b) orders (#)	0
Section 104(d) citations and orders (#)	0
Section 110(b)(2) violations (#)	0
Section 107(a) orders (#)	0
Proposed assessments under MSHA ($) whole dollars	0
Mining-related fatalities (#)	0
Section 104(e) notice	0
Notice of the potential for a pattern of violations under Section 104(e)	0
Legal actions before the Federal Mine Safety and Health Review Commission (“FMSHRC”) initiated (#)	0
Legal actions before the FMSHRC resolved	0
Legal actions pending before the FMSHRC, end of period	-
Contests of citations and orders reference in Subpart B of 29 CFR Part 2700	0
Contests of proposed penalties referenced in Subpart C of 29 CFR Part 2700 (#)	0
Complaints for compensation referenced in Subpart D of 29 CFR Part 2700 (#)	0
Complaints of discharge, discrimination or interference reference in Subpart E of 29 CFR Part 2700 (#)	0
Applications for temporary relief referenced in Subpart F of 29 CFR Part 2700 (#)	0
Appeals of judges’ decisions or orders reference in Subpart H of 29 CFR Part 2700 (#)	0
Total pending legal actions (#)	0

XML

Cover - shares	3 Months Ended
	Jan. 01, 2023	Jan. 23, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jan. 01, 2023
Document Transition Report	false
Entity File Number	0-19655
Entity Registrant Name	TETRA TECH, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4148514
Entity Address, Address Line One	3475 East Foothill Boulevard
Entity Address, City or Town	Pasadena
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91107
City Area Code	626
Local Phone Number	351-4664
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	TTEK
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		53,226,139
Entity Central Index Key	0000831641
Amendment Flag	false
Current Fiscal Year End Date	--10-01
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 01, 2023	Oct. 02, 2022
Current assets:
Cash and cash equivalents	$ 164,397	$ 185,094
Accounts receivable, net	795,872	755,112
Contract assets	80,903	92,405
Prepaid expenses and other current assets	193,635	125,605
Total current assets	1,234,807	1,158,216
Property and equipment, net	34,890	32,316
Right-of-use assets, operating leases	182,500	182,319
Goodwill	1,133,303	1,110,412
Intangible assets, net	27,536	29,163
Deferred tax assets	52,009	47,804
Other non-current assets	66,435	62,546
Total assets	2,731,480	2,622,776
Current liabilities:
Accounts payable	151,256	147,436
Accrued compensation	184,468	237,669
Contract liabilities	274,118	241,340
Short-term lease liabilities, operating leases	55,809	57,865
Current portion of long-term debt	12,505	12,504
Current contingent earn-out liabilities	33,701	28,797
Other current liabilities	158,758	190,406
Total current liabilities	870,615	916,017
Deferred tax liabilities	32,779	15,161
Long-term debt	234,120	246,250
Long-term lease liabilities, operating leases	148,034	146,285
Non-current contingent earn-out liabilities	35,328	36,769
Other non-current liabilities	86,637	79,157
Commitments and contingencies (Note 17)
Equity:
Preferred stock - authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at January 1, 2023 and October 2, 2022	0	0
Common stock - authorized, 150,000 shares of $0.01 par value; issued and outstanding, 53,226 and 52,981 shares at January 1, 2023 and October 2, 2022, respectively	532	530
Additional paid-in capital	3,281	0
Accumulated other comprehensive loss	(175,126)	(208,144)
Retained earnings	1,495,221	1,390,701
Tetra Tech stockholders’ equity	1,323,908	1,183,087
Noncontrolling interests	59	50
Total stockholders' equity	1,323,967	1,183,137
Total liabilities and stockholders' equity	$ 2,731,480	$ 2,622,776

XML

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jan. 01, 2023	Oct. 02, 2022
Statement of Financial Position [Abstract]
Preferred stock, authorized shares (in shares)	2,000,000	2,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, authorized shares (in shares)	150,000,000	150,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	53,226,000	52,981,000
Common stock, shares outstanding (in shares)	53,226,000	52,981,000

XML

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Revenue	$ 894,766	$ 858,510
Gross profit	153,246	139,766
Selling, general and administrative expenses	(56,502)	(52,546)
Acquisition and integration expenses	(3,761)	0
Contingent consideration – fair value adjustments	(933)	0
Income from operations	92,050	87,220
Interest expense, net	(5,372)	(2,904)
Other Nonoperating Income (Expense)	67,995	0
Income before income tax expense	154,673	84,316
Income tax expense	(37,958)	(15,817)
Net income	116,715	68,499
Net income attributable to noncontrolling interests	(9)	(10)
Net income attributable to Tetra Tech, basic	116,706	68,489
Net income attributable to Tetra Tech, diluted	$ 116,706	$ 68,489
Earnings per share attributable to Tetra Tech:
Basic (in dollars per share)	$ 2.20	$ 1.27
Diluted (in dollars per share)	$ 2.18	$ 1.25
Weighted-average common shares outstanding:
Basic (in shares)	53,069	53,937
Diluted (in shares)	53,529	54,577
Subcontractor costs
Cost of revenue	$ (158,204)	$ (179,177)
Other costs of revenue
Cost of revenue	$ (583,316)	$ (539,567)

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 116,715	$ 68,499
Other comprehensive income, net of tax
Foreign currency translation adjustment, net of tax	33,107	(686)
Gain (loss) on cash flow hedge valuations, net of tax	(89)	2,666
Other comprehensive income, net of tax	33,018	1,980
Comprehensive income, net of tax	149,733	70,479
Comprehensive income attributable to noncontrolling interests, net of tax	9	10
Comprehensive income attributable to Tetra Tech, net of tax	$ 149,724	$ 70,469

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Cash flows from operating activities:
Net income	$ 116,715	$ 68,499
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,616	6,111
Equity in income of unconsolidated joint ventures	(1,447)	(1,440)
Distributions of earnings from unconsolidated joint ventures	1,115	842
Amortization of stock-based awards	7,184	5,828
Deferred income taxes	15,935	(878)
Fair value adjustments to contingent consideration	933	0
Fair value adjustments to foreign currency forward contract	(67,995)	0
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable and contract assets	(16,175)	(21,560)
Prepaid expenses and other assets	5,967	5,364
Accounts payable	3,820	14,056
Accrued compensation	(53,201)	(40,321)
Contract liabilities	27,769	29,227
Other liabilities	(26,432)	11,854
Income taxes receivable/payable	4,387	4,837
Net cash provided by operating activities	25,191	82,419
Cash flows from investing activities:
Payments for business acquisitions, net of cash acquired	0	(8,858)
Capital expenditures	(4,996)	(1,518)
Proceeds from sale of assets	51	3,514
Net cash used in investing activities	(4,945)	(6,862)
Cash flows from financing activities:
Proceeds from borrowings	60,889	54,989
Repayments on long-term debt	(73,125)	(3,956)
Repurchases of common stock	0	(50,000)
Taxes paid on vested restricted stock	(16,586)	(24,949)
Stock options exercised	57	960
Dividends paid	(12,186)	(10,793)
Payments of contingent earn-out liabilities	0	(1,720)
Principal payments on finance leases	(1,316)	(945)
Net cash used in financing activities	(42,267)	(36,414)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	8,695	(169)
Net increase (decrease) in cash, cash equivalents and restricted cash	(13,326)	38,974
Cash, cash equivalents and restricted cash at beginning of period	185,491	166,568
Cash, cash equivalents and restricted cash at end of period	172,165	205,542
Cash paid during the period for:
Interest	3,433	2,456
Income taxes, net of refunds received of $0.1 million and $2.3 million	14,540	11,535
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	164,397	205,542
Restricted cash	$ 7,768	$ 0

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Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Statement of Cash Flows [Abstract]
Income tax refunds	$ 0.1	$ 2.3

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Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Total Tetra Tech Equity	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Non-Controlling Interests
Beginning balance (in shares) at Oct. 03, 2021			53,981
Beginning balance at Oct. 03, 2021	$ 1,234,291	$ 1,234,238	$ 540	$ 0	$ (125,028)	$ 1,358,726	$ 53
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	68,499	68,489				68,489	10
Other comprehensive income	1,980	1,980			1,980
Cash dividends per common share	(10,793)	(10,793)				(10,793)
Stock-based compensation	5,828	5,828		5,828
Restricted & performance shares released (in shares)			182
Restricted & performance shares released	(24,949)	(24,949)	$ 2	(18,916)		(6,035)
Stock options exercised (in shares)			20
Stock options exercised	960	960	$ 0	960
Shares issued for Employee Stock Purchase Plan (in shares)			106
Shares issued for Employee Stock Purchase Plan	12,129	12,129	$ 1	12,128
Stock repurchases (in shares)			(290)
Stock repurchases	(50,000)	(50,000)	$ (3)	0		(49,997)
Ending balance (in shares) at Jan. 02, 2022			53,999
Ending balance at Jan. 02, 2022	1,237,945	1,237,882	$ 540	0	(123,048)	1,360,390	63
Beginning balance (in shares) at Oct. 02, 2022			52,981
Beginning balance at Oct. 02, 2022	1,183,137	1,183,087	$ 530	0	(208,144)	1,390,701	50
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	116,715	116,706				116,706	9
Other comprehensive income	33,018	33,018			33,018
Cash dividends per common share	(12,186)	(12,186)				(12,186)
Stock-based compensation	7,184	7,184		7,184
Restricted & performance shares released (in shares)			145
Restricted & performance shares released	(16,586)	(16,586)	$ 1	(16,587)
Stock options exercised (in shares)			2
Stock options exercised	57	57	$ 0	57
Shares issued for Employee Stock Purchase Plan (in shares)			98
Shares issued for Employee Stock Purchase Plan	12,628	12,628	$ 1	12,627
Ending balance (in shares) at Jan. 01, 2023			53,226
Ending balance at Jan. 01, 2023	$ 1,323,967	$ 1,323,908	$ 532	$ 3,281	$ (175,126)	$ 1,495,221	$ 59

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Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares			3 Months Ended
	Dec. 09, 2022	Dec. 20, 2021	Jan. 01, 2023	Jan. 02, 2022
Statement of Stockholders' Equity [Abstract]
Dividend paid per share (in dollars per share)	$ 0.23	$ 0.20	$ 0.23	$ 0.20

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Basis of Presentation

3 Months Ended

Jan. 01, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited consolidated financial statements and related notes of Tetra Tech, Inc. (“we,” “us,” “our” or "Tetra Tech") have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. They do not include all of the information and footnotes required by U.S. GAAP for complete financial statements and, therefore, should be read in conjunction with the audited consolidated financial statements and the notes contained in our Annual Report on Form 10-K for the fiscal year ended October 2, 2022.

These financial statements reflect all normal recurring adjustments that are considered necessary for a fair statement of our financial position, results of operations and cash flows for the interim periods presented. The results of operations and cash flows for any interim period are not necessarily indicative of results for the full fiscal year or for future fiscal years. Certain prior year amounts have been reclassified to conform to the current year presentation.

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Recent Accounting Pronouncements

3 Months Ended

Jan. 01, 2023

Accounting Changes and Error Corrections [Abstract]

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In November 2021, the Financial Accounting Standards Board ("FASB") issued ASU 2021-10, Government Assistance (Topic 832), which requires annual disclosures for transactions with a government authority that are accounted for by applying a grant or contribution model by analogy, including (1) the types of transactions, (2) the accounting for those transactions, and (3) the effect of those transactions on an entity's financial statements. ASU 2021-10 was effective for us beginning in the first quarter of fiscal 2023.

In fiscal 2020, the Canadian federal government implemented the Canadian Emergency Wage Subsidy ("CEWS") program in response to the negative impact of the coronavirus disease 2019 ("COVID-19") pandemic on businesses operating in Canada. Our Canadian legal entities qualified for and applied for these CEWS cash benefits to partially offset the impacts of revenue reductions and on-going staffing costs. The $26.0 million total received was initially recorded in "Other current liabilities" until all potential amendments to the qualification criteria, including some that were proposed with retroactive application, were finalized in fiscal 2022. As there are no further contingencies, beginning in fiscal 2023, the amounts received will be distributed to all Canadian employees. We expect to distribute approximately $9 million in the next twelve months. Accordingly, this amount was reclassified from "Other current liabilities" to "Accrued compensation" on our consolidated balance sheet at October 2, 2022. The remaining $17.0 million, which we expect to distribute beyond one year, was reclassified to "Other non-current liabilities". We do not expect there will be any related impact to our operating income, and we have no outstanding applications for further government assistance.

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Revenue and Contract Balances

3 Months Ended

Jan. 01, 2023

Revenue from Contract with Customer [Abstract]

Revenue and Contract Balances

Revenue and Contract Balances We disaggregate revenue by client sector and contract type, as we believe it best depicts how the nature, timing, and uncertainty of revenue and cash flows are affected by economic factors. The following tables present revenue disaggregated by client sector and contract type (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Client Sector:
U.S. federal government (1)	$	276,075	$	266,797
U.S. state and local government	153,195		159,008
U.S. commercial	198,956		176,904
International (2)	266,540		255,801
Total	$	894,766	$	858,510
Contract Type:
Fixed-price	$	327,737	$	331,248
Time-and-materials	420,570		395,648
Cost-plus	146,459		131,614
Total	$	894,766	$	858,510

(1)    Includes revenue generated under U.S. federal government contracts performed outside the United States.

(2)    Includes revenue generated from foreign operations, primarily in Canada, Australia, the United Kingdom, and revenue generated from non-U.S. clients.

Other than the U.S. federal government, no single client accounted for more than 10% of our revenue for the three months ended January 1, 2023 and January 2, 2022.

Contract Assets and Contract Liabilities

We invoice customers based on the contractual terms of each contract. However, the timing of revenue recognition may differ from the timing of invoice issuance.

Contract assets represent revenue recognized in excess of the amounts for which we have the contractual right to bill our customers. Such amounts are recoverable from customers based upon various measures of performance, including achievement of certain milestones or completion of a contract. In addition, many of our time and materials arrangements are billed in arrears pursuant to contract terms that are standard within the industry, resulting in contract assets and/or unbilled receivables being recorded, as revenue is recognized in advance of billings. Contract retentions, included in contract assets, represent amounts withheld by clients until certain conditions are met or the project is completed, which may extend beyond one year.

Contract liabilities consist of billings in excess of revenue recognized. Contract liabilities decrease as we recognize revenue from the satisfaction of the related performance obligation and increase as billings in advance of revenue recognition occur. Contract assets and liabilities are reported in a net position on a contract-by-contract basis at the end of each reporting period. There were no substantial non-current contract assets or liabilities for the periods presented. Net contract assets/liabilities consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Contract assets (1)	$	80,903	$	92,405
Contract liabilities	274,118		241,340
Net contract liabilities	$	(193,215)	$	(148,935)

(1)    Includes $17.2 million and $23.3 million of contract retentions at January 1, 2023 and October 2, 2022, respectively.

In the first quarters of fiscal 2023 and 2022, we recognized revenue of approximately $81 million and $63 million, respectively, from amounts included in the contract liability balances at the end of fiscal 2022 and 2021, respectively.

We recognize revenue primarily using the cost-to-cost measure of progress method to estimate progress towards completion. Changes in those estimates could result in the recognition of cumulative catch-up adjustments to the contract’s inception-to-date revenue, costs and profit in the period in which such changes are made. As a result, we recognized net

favorable revenue and operating income adjustments of $3.5 million and $2.8 million in the first quarters of fiscal 2023 and 2022, respectively.

Changes in revenue and cost estimates could also result in a projected loss, determined at the contract level, which would be recorded immediately in earnings. At January 1, 2023 and October 2, 2022, our consolidated balance sheets included liabilities for anticipated losses of $7.6 million and $10.0 million, respectively. The estimated cost to complete these related contracts at January 1, 2023 and October 2, 2022 was approximately $55 million and $80 million, respectively.

Accounts Receivable, Net

Net accounts receivable consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Billed	$	486,027	$	491,700
Unbilled	313,782		267,161
Total accounts receivable	799,809		758,861
Allowance for doubtful accounts	(3,937)		(3,749)
Total accounts receivable, net	$	795,872	$	755,112

Billed accounts receivable represent amounts billed to clients that have not been collected. Unbilled accounts receivable, which represent an unconditional right to payment subject only to the passage of time, include unbilled amounts typically resulting from revenue recognized but not yet billed pursuant to contract terms or billed after the period end date. Substantially all of our unbilled receivables at January 1, 2023 are expected to be billed and collected within 12 months. The allowance for doubtful accounts represents amounts that are expected to become uncollectible or unrealizable in the future. We determine an estimated allowance for uncollectible accounts based on management's consideration of trends in the actual and forecasted credit quality of our clients, including delinquency and payment history; type of client, such as a government agency or a commercial sector client; and general economic and industry conditions.

Claims are amounts in excess of agreed contract prices that we seek to collect from our clients or other third parties for delays, errors in specifications and designs, contract terminations, change orders in dispute or unapproved as to both scope and price, or other causes of unanticipated additional costs. There were no claims included in our total accounts receivable at January 1, 2023 and October 2, 2022. We regularly evaluate all unsettled claim amounts and record appropriate adjustments to revenue when it is probable that the claim will result in a different contract value than the amount previously estimated. In the first quarters of fiscal 2023 and 2022, we recorded no gains or losses related to claims.

Other than the U.S. federal government, no single client accounted for more than 10% of our accounts receivable at January 1, 2023 and October 2, 2022.

Remaining Unsatisfied Performance Obligations (“RUPO”)

Our RUPO represents a measure of the total dollar value of work to be performed on contracts awarded and in progress. We had $3.8 billion of RUPO at January 1, 2023. RUPO increases with awards from new contracts or additions on existing contracts and decreases as work is performed and revenue is recognized on existing contracts. RUPO may also decrease when projects are canceled or modified in scope. We include a contract within our RUPO when the contract is awarded and an agreement on contract terms has been reached.

We expect to satisfy our RUPO at January 1, 2023 over the following periods (in thousands):

	Amount
Within 12 months	$	2,460,171
Beyond	1,329,949
Total	$	3,790,120

Although RUPO reflects business that is considered to be firm, cancellations, deferrals or scope adjustments may occur. RUPO is adjusted to reflect any known project cancellations, revisions to project scope and cost, foreign currency exchange fluctuations and project deferrals, as appropriate. Our operations and maintenance contracts can generally be terminated by the clients without a substantive financial penalty. Therefore, the remaining performance obligations on such contracts are limited to the notice period required for the termination (usually 30, 60, or 90 days).

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Acquisitions

3 Months Ended

Jan. 01, 2023

Business Combination and Asset Acquisition [Abstract]

Acquisitions

Acquisitions

Subsequent Event. On January 3, 2023, we acquired Amyx, Inc. (“Amyx”), an enterprise technology services, cybersecurity and management consulting firm. Based in Reston, Virginia, Amyx, with over 500 employees, provides application modernization, cybersecurity, systems engineering, financial management, and program management support on over 30 Federal Government programs. Amyx will be included in our GSG segment.

Subsequent Event. On September 23, 2022, we made an all cash offer to acquire all of the outstanding shares of RPS Group plc ("RPS"), a publicly traded company on the London Stock Exchange for 222 pence per share, through a scheme of arrangement, which was unanimously recommended by RPS's Board of Directors. On November 3, 2022, RPS's shareholders approved the scheme of arrangement. On January 19, 2023, the court sanctioned scheme of arrangement to purchase RPS was approved, and we completed the acquisition on January 23, 2023. The total purchase price including assumed debt and transactions costs was approximately GBP 714 million. RPS employs approximately 5,000 associates in the United Kingdom, Europe, Asia Pacific and North America, delivering high-end solutions, especially in energy transformation, water and program management for government and commercial clients. Substantially all of RPS will be included in our CIG segment.

The results of these acquisitions will be included in our consolidated financial statements beginning on the respective closing dates. We are in the process of performing procedures to determine the fair value of assets acquired and liabilities assumed related to the acquisitions, and will include the preliminary purchase price allocation in our Quarterly Report on Form 10-Q for the period ending April 2, 2023. See Note 14, "Credit Facility" for additional information regarding the financing of these acquisitions.

In fiscal 2022, we acquired The Integration Group of America ("TIGA"), Piteau Associates (“PAE”) and other financially immaterial acquisitions. TIGA is based in Spring, Texas and is an industry leader in process automation and system integration solutions, including customized software and platform (SaaS/PaaS) applications, advanced data analytics, cloud data integration and platform virtualization. PAE is based in Vancouver, British Columbia and is a global leader in sustainable natural resource analytics including hydrologic numerical modeling and dewatering system design. PAE is part of our CIG segment, and TIGA and other immaterial acquisitions are part of our GSG segment. The total fair value of the purchase price for all four acquisitions was $88.3 million. This amount is comprised of $44.0 million in initial cash payments made to the sellers, $2.5 million of receivables (net) related to estimated post-closing adjustments for the net assets acquired, $15.5 million payable in a promissory note issued to the sellers along with related transaction expenses of the sellers (which were subsequently paid in July 2022), and $31.3 million for the estimated fair value of contingent earn-out obligations, with a maximum of $47.0 million, based upon the achievement of specified operating income targets in each of the three to five years following the acquisitions.

Goodwill additions resulting from fiscal 2022 business combinations are primarily attributable to the significant technical expertise residing in embedded workforces that are sought out by clients, long-term management experience, the industry reputations, and the synergies expected to arise after the acquisitions in the areas of data management, digitization, modeling, water, and natural resources. These acquired capabilities, when combined with our existing global consulting and engineering business, result in opportunities that allow us to provide services under contracts that could not have been pursued individually by either us or the acquired companies. The results of these acquisitions were included in our consolidated financial statements from their respective closing dates. These acquisitions were not considered material to our financial statements, individually or in the aggregate, to our consolidated financial statements. As a result, no pro forma information has been provided.

Backlog and client relations intangible assets include the fair value of existing contracts and the underlying customer relationships with lives ranging from one to ten years, and trade names intangible assets have lives ranging from three to five years. For detailed information regarding our intangible assets, see Note 5, “Goodwill and Intangible Assets”.

Most of our acquisition agreements include contingent earn-out agreements, which are generally based on the achievement of future operating income thresholds. The contingent earn-out arrangements are based on our valuations of the acquired companies and reduce the risk of overpaying for acquisitions if the projected financial results are not achieved. The fair values of any earn-out arrangements are included as part of the purchase price of the acquired companies on their respective acquisition dates. For each transaction, we estimate the fair value of contingent earn-out payments as part of the initial purchase price and record the estimated fair value of contingent consideration as a liability in “Current contingent earn-out liabilities”

and “Non-current contingent earn-out liabilities” on the consolidated balance sheets. We consider several factors when determining that contingent earn-out liabilities are part of the purchase price, including the following: (1) the valuation of our acquisitions is not supported solely by the initial consideration paid, and the contingent earn-out formula is a critical and material component of the valuation approach to determining the purchase price; and (2) the former owners of acquired companies that remain as key employees receive compensation other than contingent earn-out payments at a reasonable level compared with the compensation of our other key employees. The contingent earn-out payments are not affected by employment termination.

We measure our contingent earn-out liabilities at fair value on a recurring basis using significant unobservable inputs classified within Level 3 of the fair value hierarchy. We use a probability-weighted discounted income approach as a valuation technique to convert future estimated cash flows to a single present value amount. The significant unobservable inputs used in the fair value measurements are operating income projections over the earn-out period (generally three to five years), and the probability outcome percentages we assign to each scenario. Significant increases or decreases to either of these inputs in isolation would result in a significantly higher or lower liability, with a higher liability capped by the contractual maximum of the contingent earn-out obligation. Ultimately, the liability will be equivalent to the amount paid, and the difference between the fair value estimate and amount paid will be recorded in earnings. The amount paid that is less than or equal to the contingent earn-out liability on the acquisition date is reflected as cash used in financing activities in our consolidated statements of cash flows. Any amount paid in excess of the contingent earn-out liability on the acquisition date is reflected as cash used in operating activities in our consolidated statements of cash flows.

We review and re-assess the estimated fair value of contingent consideration on a quarterly basis, and the updated fair value could differ materially from the initial estimates. Changes in the estimated fair value of our contingent earn-out liabilities related to the time component of the present value calculation are reported in interest expense. Adjustments to the estimated fair value related to changes in all other unobservable inputs are reported in operating income. For the first quarter of fiscal 2023, we evaluated our estimates for contingent consideration liabilities for the remaining earn-out periods for each individual acquisition, which included a review of their financial results to-date, the status of ongoing projects in their RUPO, and the inventory of prospective new contract awards. In addition, we considered the potential impact of the global economic disruption due to the COVID-19 pandemic on our operating income projections over the various earn-out periods. For the first quarters of fiscal 2023 and 2022, we had no material adjustments to our contingent earn-out liabilities in operating income.

At January 1, 2023, there was a total potential maximum of $120.9 million of outstanding contingent consideration related to acquisitions. Of this amount, $69.0 million was estimated as the fair value and accrued on our consolidated balance sheet.

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Goodwill and Intangible Assets

3 Months Ended

Jan. 01, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets

The following table summarizes the changes in the carrying value of goodwill by reportable segment (in thousands):

	GSG		CIG		Total
Balance at October 2, 2022	$	519,102	$	591,310	$	1,110,412
Translation adjustments	2,792		20,099		22,891
Balance at January 1, 2023	$	521,894	$	611,409	$	1,133,303

The foreign currency translation adjustments resulted from our foreign subsidiaries with functional currencies that are different than our reporting currency. These goodwill amounts are presented net of reductions from historical impairment adjustments. The gross amounts for GSG were $539.6 million and $536.8 million at January 1, 2023 and October 2, 2022, respectively, excluding accumulated impairment of $17.7 million at each date. The gross amounts of goodwill for CIG were $732.9 million and $712.8 million at January 1, 2023 and October 2, 2022, respectively, excluding accumulated impairment of $121.5 million at each date.

We perform our annual goodwill impairment review at the beginning of our fiscal fourth quarter. Our most recent annual review at July 4, 2022 (i.e. the first day of our fourth quarter in fiscal 2022) indicated that we had no impairment of goodwill, and all of our reporting units had estimated fair values that were in excess of their carrying values, including goodwill. At July 4, 2022, and after the reallocation of goodwill on the first day of fiscal 2022, we had no reporting units that had estimated fair values that exceeded their carrying values by less than 165%.

We also regularly evaluate whether events and circumstances have occurred that may indicate a potential change in the recoverability of goodwill. We perform interim goodwill impairment reviews between our annual reviews if certain events and circumstances have occurred, such as a deterioration in general economic conditions; an increase in the competitive environment; a change in management, key personnel, strategy or customers; negative or declining cash flows; or a decline in

actual or planned revenue or earnings compared with actual and projected results of relevant prior periods. Although we believe that our estimates of fair value for these reporting units are reasonable, if financial performance for these reporting units falls significantly below our expectations or market prices for similar business decline, the goodwill for these reporting units could become impaired.    

The following table presents the gross amount and accumulated amortization of our acquired identifiable intangible assets with finite useful lives included in “Intangible assets, net” on the consolidated balance sheets ($ in thousands):

	Period Ended
	January 1, 2023							October 2, 2022
	Weighted- Average Remaining Life (in Years)	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Client relations	5.4	$	43,601	$	(23,081)	$	20,520	$	41,676	$	(21,092)	$	20,584
Backlog	0.4	34,837		(33,033)		1,804		33,286		(29,990)		3,296
Trade names	3.5	13,656		(8,444)		5,212		12,711		(7,428)		5,283
Total		$	92,094	$	(64,558)	$	27,536	$	87,673	$	(58,510)	$	29,163

Amortization expense for the three months ended January 1, 2023 was $3.4 million, compared to $2.7 million for the prior-year period. Estimated amortization expense for the remainder of fiscal 2023 and succeeding years is as follows (in thousands):

	Amount
2023 (remaining)	$	6,755
2024	5,552
2025	4,719
2026	3,869
2027	2,349
Beyond	4,292
Total	$	27,536

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Property and Equipment

3 Months Ended

Jan. 01, 2023

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

Property and equipment consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Equipment, furniture and fixtures	$	101,002	$	96,710
Leasehold improvements	32,985		32,428
Total property and equipment	133,987		129,138
Accumulated depreciation	(99,097)		(96,822)
Property and equipment, net	$	34,890	$	32,316

The depreciation expense related to property and equipment was $3.2 million for the three months ended January 1, 2023, compared to $3.4 million for the prior-year period.

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Stock Repurchase and Dividends

3 Months Ended

Jan. 01, 2023

Stock Repurchase And Dividends [Abstract]

Stock Repurchase and Dividends

Stock Repurchase and Dividends

On October 5, 2021, our Board of Directors authorized a new stock repurchase program under which we could repurchase up to $400 million of our common stock. We did not repurchase any shares of our common stock in the first quarter of fiscal 2023. At January 1, 2023, we had a remaining balance of $347.8 million under our stock repurchase program.

The following table presents dividends declared and paid in the first three months of fiscal 2023 and 2022:

Declare Date	Dividend Paid Per Share		Record Date	Payment Date	Dividend Paid (in thousands)
November 7, 2022	$	0.23	November 21, 2022	December 9, 2022	$	12,186
November 15, 2021	$	0.20	December 2, 2021	December 20, 2021	$	10,793

Subsequent Event.  On January 30, 2023, our Board of Directors declared a quarterly cash dividend of $0.23 per share payable on February 24, 2023 to stockholders of record as of the close of business on February 13, 2023.

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Leases

3 Months Ended

Jan. 01, 2023

Leases [Abstract]

Leases

Leases

Our operating leases are primarily for corporate and project office spaces. To a much lesser extent, we have operating leases for vehicles and equipment. Our operating leases have remaining lease terms of one month to ten years, some of which may include options to extend the leases for up to five years.

We determine if an arrangement is a lease at inception. Operating leases are included in "Right-of-use assets, operating leases", "Short-term lease liabilities, operating leases" and "Long-term lease liabilities, operating leases" in the consolidated balance sheets. Our finance leases are primarily for certain information technology equipment, and are included in "Other non-current assets", "Other current liabilities" and "Other non-current liabilities" in the consolidated balance sheets at January 1, 2023 and October 2, 2022.

Right-of-use ("ROU") assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, incremental borrowing rates are used based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset at the commencement date also includes any lease payments made to the lessor at or before the commencement date and initial direct costs less lease incentives received. Lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term.

The components of lease costs are as follows (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Operating lease cost	$	20,961	$	21,751
Sublease income	(32)		(125)
Total lease cost	$	20,929	$	21,626

Supplemental cash flow information related to leases is as follows (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Operating cash flows for operating leases	$	16,493	$	17,519
Financing cash flows for finance leases	1,316		945
Right-of-use assets obtained in exchange for new operating lease liabilities	11,117		12,347
Right-of-use assets obtained in exchange for new finance lease liabilities	$	1,431	$	1,349

Supplemental balance sheet and other information related to leases are as follows (in thousands):

	Balance at
	January 1, 2023			October 2, 2022
Operating leases:
Right-of-use assets	$	182,500		$	182,319
Lease liabilities:
Current	55,809			57,865
Non-current	148,034			146,285
Total operating lease liabilities	$	203,843		$	204,150
Finance leases:
Other non-current assets	$	9,932		$	9,564
Other current liabilities	$	4,582		$	4,481
Other non-current liabilities	$	5,343		$	4,745
Weighted-average remaining lease term:
Operating leases	5 years			5 years
Finance leases	2 years			2 years
Weighted-average discount rate:
Operating leases	2.2		%	2.2		%
Finance leases	3		%	3		%

At January 1, 2023, we have approximately $8 million of operating leases that have not yet commenced.

A maturity analysis of the future undiscounted cash flows associated with our lease liabilities at January 1, 2023 is as follows (in thousands):

	Operating Leases		Finance Leases
2023 (remaining)	$	49,216	$	3,787
2024	51,833		3,699
2025	39,744		2,182
2026	25,234		574
2027	17,870		211
Beyond	32,484		—
Total lease payments	216,381		10,453
Less: imputed interest	(12,538)		(521)
Total present value of lease liabilities	$	203,843	$	9,932

Leases

Leases

Our operating leases are primarily for corporate and project office spaces. To a much lesser extent, we have operating leases for vehicles and equipment. Our operating leases have remaining lease terms of one month to ten years, some of which may include options to extend the leases for up to five years.

We determine if an arrangement is a lease at inception. Operating leases are included in "Right-of-use assets, operating leases", "Short-term lease liabilities, operating leases" and "Long-term lease liabilities, operating leases" in the consolidated balance sheets. Our finance leases are primarily for certain information technology equipment, and are included in "Other non-current assets", "Other current liabilities" and "Other non-current liabilities" in the consolidated balance sheets at January 1, 2023 and October 2, 2022.

Right-of-use ("ROU") assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, incremental borrowing rates are used based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset at the commencement date also includes any lease payments made to the lessor at or before the commencement date and initial direct costs less lease incentives received. Lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term.

The components of lease costs are as follows (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Operating lease cost	$	20,961	$	21,751
Sublease income	(32)		(125)
Total lease cost	$	20,929	$	21,626

Supplemental cash flow information related to leases is as follows (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Operating cash flows for operating leases	$	16,493	$	17,519
Financing cash flows for finance leases	1,316		945
Right-of-use assets obtained in exchange for new operating lease liabilities	11,117		12,347
Right-of-use assets obtained in exchange for new finance lease liabilities	$	1,431	$	1,349

Supplemental balance sheet and other information related to leases are as follows (in thousands):

	Balance at
	January 1, 2023			October 2, 2022
Operating leases:
Right-of-use assets	$	182,500		$	182,319
Lease liabilities:
Current	55,809			57,865
Non-current	148,034			146,285
Total operating lease liabilities	$	203,843		$	204,150
Finance leases:
Other non-current assets	$	9,932		$	9,564
Other current liabilities	$	4,582		$	4,481
Other non-current liabilities	$	5,343		$	4,745
Weighted-average remaining lease term:
Operating leases	5 years			5 years
Finance leases	2 years			2 years
Weighted-average discount rate:
Operating leases	2.2		%	2.2		%
Finance leases	3		%	3		%

At January 1, 2023, we have approximately $8 million of operating leases that have not yet commenced.

A maturity analysis of the future undiscounted cash flows associated with our lease liabilities at January 1, 2023 is as follows (in thousands):

	Operating Leases		Finance Leases
2023 (remaining)	$	49,216	$	3,787
2024	51,833		3,699
2025	39,744		2,182
2026	25,234		574
2027	17,870		211
Beyond	32,484		—
Total lease payments	216,381		10,453
Less: imputed interest	(12,538)		(521)
Total present value of lease liabilities	$	203,843	$	9,932

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Stockholders' Equity and Stock Compensation Plans	3 Months Ended
	Jan. 01, 2023
Stockholders' Equity Note [Abstract]
Stockholders' Equity and Stock Compensation Plans	Stockholders’ Equity and Stock Compensation Plans We recognize the fair value of our stock-based awards as compensation expense on a straight-line basis over the requisite service period in which the award vests. Stock-based compensation expense for the three months ended January 1, 2023 was $7.2 million, compared to $5.8 million for the same period last year. Most of these amounts were included in selling, general and administrative expenses on our consolidated statements of income. In the first quarter of fiscal 2023, we awarded 55,708 performance share units (“PSUs”) to our non-employee directors and executive officers at an estimated fair value of $204.00 per share on the award date. All PSUs are performance-based and vest, if at all, after the conclusion of the three-year performance period. The number of PSUs that ultimately vest is based 50% on the growth in our diluted earnings per share and 50% on our relative total shareholder return over the vesting period. Additionally, we awarded 98,305 restricted stock units (“RSUs”) to our non-employee directors, executive officers and employees at a fair value of $156.52 per share on the award date. All executive officer and employee RSUs have time-based vesting over a four-year period, and the non-employee director RSUs vest after one year.

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Earnings per Share ("EPS")

3 Months Ended

Jan. 01, 2023

Earnings Per Share [Abstract]

Earnings per Share ("EPS")

Earnings per Share (“EPS”)

Basic EPS is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding, less unvested restricted stock for the period. Diluted EPS is computed by dividing net income by the weighted-average number of common shares outstanding and dilutive potential common shares for the period. Potential common shares include the weighted-average dilutive effects of outstanding stock options and unvested restricted stock using the treasury stock method.

The following table presents the number of weighted-average shares used to compute basic and diluted EPS (in thousands, except per share data):

	Three Months Ended
	January 1, 2023		January 2, 2022
Net income attributable to Tetra Tech	$	116,706	$	68,489
Weighted-average common shares outstanding – basic	53,069		53,937
Effect of dilutive stock options and unvested restricted stock	460		640
Weighted-average common shares outstanding – diluted	53,529		54,577
Earnings per share attributable to Tetra Tech:
Basic	$	2.20	$	1.27
Diluted	$	2.18	$	1.25

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Income Taxes

3 Months Ended

Jan. 01, 2023

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The effective tax rates for the first three months of fiscal 2023 and 2022 were 24.5% and 18.8%, respectively. Income tax expense was reduced by $1.7 million and $4.5 million of excess tax benefits on share-based payments in the first quarters of fiscal 2023 and 2022, respectively. Excluding the impact of the excess tax benefits on share-based payments, our effective tax rates in the first quarters of fiscal 2023 and 2022 were 25.7% and 24.1%, respectively.

At January 1, 2023 and October 2, 2022, the liability for income taxes associated with uncertain tax positions was $10.8 million and $10.6 million, respectively. These uncertain tax positions substantially relate to ongoing examinations. It is reasonably possible that these liabilities may decrease within the next 12 months as certain examinations are resolved. These liabilities represent our current estimates of the additional tax liabilities that we may be assessed when the related audits are concluded. If these audits are resolved in a manner more unfavorable than our current expectations, our additional tax liabilities could be materially higher than the amounts currently recorded resulting in additional tax expense.

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Reportable Segments

3 Months Ended

Jan. 01, 2023

Segment Reporting [Abstract]

Reportable Segments

Reportable Segments

We manage our operations under two reportable segments. Our GSG reportable segment primarily includes activities with U.S. government clients (federal, state and local) and all activities with development agencies worldwide. Our CIG reportable segment primarily includes activities with U.S. commercial clients and international clients other than development agencies.

GSG provides high-end consulting and engineering services primarily to U.S. government clients (federal, state and local) and development agencies worldwide. GSG supports U.S. government civilian and defense agencies with services in water, environment, sustainable infrastructure, information technology, and disaster management. GSG also provides engineering design services for U.S. based federal and municipal clients, especially in water infrastructure, flood protection and solid waste. GSG also leads our support for development agencies worldwide, especially in the United States, United Kingdom, and Australia.

CIG primarily provides high-end consulting and engineering services to U.S. commercial clients, and international clients inclusive of the commercial and government sectors. CIG supports commercial clients across the Fortune 500, renewable energy, industrial, high performance buildings, and aerospace markets. CIG also provides sustainable infrastructure and related environmental, engineering and project management services to commercial and local government clients across Canada, in Asia Pacific (primarily Australia and New Zealand), the United Kingdom, as well as Brazil and Chile.

Management evaluates the performance of these reportable segments based upon their respective segment operating income before the effect of amortization expense related to acquisitions, and other unallocated corporate expenses. We account for inter-segment revenues and transfers as if they were to third parties; that is, by applying a negotiated fee onto the costs of the services performed. All significant intercompany balances and transactions are eliminated in consolidation.

The following tables summarize financial information regarding our reportable segments (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Revenue
GSG	$	471,067	$	456,099
CIG	439,556		416,286
Elimination of inter-segment revenue	(15,857)		(13,875)
Total revenue	$	894,766	$	858,510
Income from operations
GSG	$	60,347	$	51,179
CIG	50,108		45,308
Corporate (1)	(18,405)		(9,267)
Total income from operations	$	92,050	$	87,220

(1)     Includes amortization of intangibles, other costs and other income not allocable to our reportable segments.

	Balance at
	January 1, 2023		October 2, 2022
Total Assets
GSG	$	586,128	$	558,764
CIG	742,288		688,640
Corporate (1)	1,403,064		1,375,372
Total assets	$	2,731,480	$	2,622,776

(1)    Corporate assets consist of intercompany eliminations and assets not allocated to our reportable segments including goodwill, intangible assets, deferred income taxes and certain other assets.

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Fair Value Measurements	3 Months Ended
	Jan. 01, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The fair value of long-term debt was determined using the present value of future cash flows based on the borrowing rates currently available for debt with similar terms and maturities (Level 2 measurement, as described in “Critical Accounting Policies and Estimates” in our Annual Report on Form 10-K for the fiscal year ended October 2, 2022). The carrying value of our long-term debt approximated fair value at January 1, 2023 and October 2, 2022. At January 1, 2023, we had borrowings of $240.6 million outstanding under our Amended Credit Agreement, which were used to fund business acquisitions, working capital needs, stock repurchases, dividends, capital expenditures and contingent earn-outs.

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Credit Facility

3 Months Ended

Jan. 01, 2023

Debt Disclosure [Abstract]

Credit Facility

Credit Facility

On October 26, 2022, we entered into a Third Amended and Restated Credit Agreement that provides for an additional $500 million senior secured term loan facility (the "New Term Loan Facility") increasing our total borrowing capacity to $1.55 billion.

Subsequent Event. On January 23, 2023, we acquired RPS and drew the entire amount of the New Term Loan Facility to partially finance the RPS acquisition. The remaining purchase price was financed with existing cash on hand and borrowings under the existing Amended Revolving Credit Facility. The New Term Loan Facility is not subject to any amortization payments of principal and matures on the third anniversary of the RPS acquisition closing date.

On February 18, 2022, we entered into Amendment No. 2 to Second Amended and Restated Credit Agreement (“Amended Credit Agreement”) with a total borrowing capacity of $1.05 billion that will mature in February 2027. The Amended Credit Agreement is a $750 million senior secured, five-year facility that provides for a $250 million term loan facility (the “Amended Term Loan Facility”) and a $500 million revolving credit facility (the “Amended Revolving Credit Facility”). In addition, the Amended Credit Agreement includes a $300 million accordion feature that allows us to increase the Amended Credit Agreement to $1.05 billion subject to lender approval. The Amended Credit Agreement provides for, among other things, (i) refinance indebtedness under our Credit Agreement dated at July 30, 2018; (ii) finance open market repurchases of common stock, acquisitions, and cash dividends and distributions; and (iii) utilize the proceeds for working capital, capital expenditures and other general corporate purposes. The Amended Credit Agreement provides for a reduction in the interest grid for meeting certain sustainability targets related to the (i) reduction of greenhouse gas emissions through the Company’s projects and operational sustainability initiatives and (ii) improvement of peoples’ lives as a result of the Company’s projects that provide environmental, social and governance benefits. The Amended Revolving Credit Facility includes a $100 million sublimit for the issuance of standby letters of credit, a $20 million sublimit for swingline loans, and a $300 million sublimit for multicurrency borrowings and letters of credit.

The entire Amended Term Loan Facility was drawn on February 18, 2022. The Amended Term Loan Facility is subject to quarterly amortization of principal at 5% annually commencing June 30, 2022. We may borrow on the Amended Revolving Credit Facility, at our option, at either (a) a benchmark rate plus a margin that ranges from 1.000% to 1.875% per annum, or (b) a base rate for loans in U.S. dollars (the highest of the U.S. federal funds rate plus 0.50% per annum, the bank’s prime rate or the Secured Overnight Financing Rate ("SOFR") rate plus 1.00%, plus a margin that ranges from 0% to 0.875% per annum. In each case, the applicable margin is based on our Consolidated Leverage Ratio, calculated quarterly. The Amended Term Loan Facility is subject to the same interest rate provisions. The Amended Credit Agreement expires on February 18, 2027, or earlier at our discretion upon payment in full of loans and other obligations.

The Amended Credit Agreement contains certain affirmative and restrictive covenants, and customary events of default. The financial covenants provide for a maximum Consolidated Leverage Ratio of 3.25 to 1.00 (total funded debt/EBITDA, as defined in the Amended Credit Agreement) and a minimum Consolidated Interest Coverage Ratio of 3.00 to 1.00 (EBITDA/Consolidated Interest Charges, as defined in the Amended Credit Agreement). Our obligations under the Amended Credit Agreement are guaranteed by certain of our domestic subsidiaries and are secured by first priority liens on (i) the equity interests of certain of our subsidiaries, including those subsidiaries that are guarantors or borrowers under the Amended Credit Agreement, and (ii) the accounts receivable, general intangibles and intercompany loans, and those of our subsidiaries that are guarantors or borrowers.

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Derivative Financial Instruments

3 Months Ended

Jan. 01, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Derivative Financial Instruments

We use certain interest rate derivative contracts to hedge interest rate exposures on our variable rate debt. We also enter into foreign currency derivative contracts with financial institutions to reduce the risk that cash flows and earnings could adversely be affected by foreign currency exchange rate fluctuations. Our hedging program is not designated for trading or speculative purposes.

We recognize derivative instruments as either assets or liabilities on the accompanying consolidated balance sheets at fair value. We record changes in the fair value (i.e., gains or losses) of the derivatives that have been designated as cash flow hedges in our consolidated balance sheets as accumulated other comprehensive income, and in our consolidated statements of income for those derivatives designated as fair value hedges. Our derivative contracts are categorized within Level 2 of the fair value hierarchy.

We entered into a forward contract in the fourth quarter of fiscal 2022 to acquire GBP 714.0 million at a rate of 1.0852 for a total of USD 774.8 million that was integrated with our planned acquisition of RPS. This contract matured on December 30, 2022. On December 28, 2022, we entered into an extension of the integrated forward contract to acquire GBP 714.0 million at a rate of 1.086 for a total of USD 775.4 million, extending the maturity date to January 23, 2023, the closing date of the RPS

acquisition. Although an effective economic hedge of our foreign exchange risk related to this transaction, the forward contract does not qualify for hedge accounting. As a result, the forward contract is marked-to-market with changes in fair value recognized in earnings each period. The intrinsic value of the forward contract was immaterial at inception as the GBP/USD spot and forward exchange rates were essentially the same. The fair value of the forward contract at October 2, 2022 was $19.9 million, and an unrealized gain of the same amount was recognized in the fourth quarter of fiscal 2022 results. The fair value of the forward contract at January 1, 2023 was $87.9 million, which is reported in the "Prepaid expenses and other current assets" on our consolidated balance sheet at January 1, 2023. This resulted in an unrealized gain of $68.0 million in the first quarter of fiscal 2023, which was recognized in earnings and reported in the “Other non-operating income" on our consolidated income statement. The forward contract was settled on January 23, 2023, with a cumulative gain of approximately $109 million.

In fiscal 2018, we entered into five interest rate swap agreements that we designated as cash flow hedges to fix the interest rate on the borrowings under our term loan facility. At January 1, 2023, the notional principal of our outstanding interest swap agreements was $196.9 million ($39.4 million each.) The interest rate swaps have a fixed interest rate of 2.79% and expire in July 2023 for all five agreements. At January 1, 2023 and October 2, 2022, the fair values of the effective portion of our interest rate swap agreements designated as cash flow hedges before tax effect were unrealized gains of $2.3 million and $2.4 million, respectively, which were reported in "Other non-current assets" on our consolidated balance sheets. Additionally, the related loss of $0.1 million for the three months ended January 1, 2023, compared to the related gain of $2.7 million for the prior-year period, were recognized and reported on our consolidated statements of comprehensive income. We expect to reclassify a credit of $2.2 million from accumulated other comprehensive loss to interest expense within the next twelve months. There were no other derivative instruments designated as hedging instruments for the first quarter of fiscal 2023.

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Reclassifications Out of Accumulated Other Comprehensive Income

3 Months Ended

Jan. 01, 2023

Equity [Abstract]

Reclassifications Out of Accumulated Other Comprehensive Income

Reclassifications Out of Accumulated Other Comprehensive Income

The accumulated balances and activities for the three months ended January 1, 2023 and January 2, 2022 related to reclassifications out of accumulated other comprehensive income are summarized as follows (in thousands):

	Three Months Ended
	Foreign Currency Translation Adjustments		Gain (Loss) on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
Balance at October 3, 2021	$	(115,634)	$	(9,394)	$	(125,028)
Other comprehensive income (loss) before reclassifications	(686)		4,032		3,346
Amounts reclassified from accumulated other comprehensive loss
Interest rate contracts, net of tax (1)	—		(1,366)		(1,366)
Net current-period other comprehensive income (loss)	(686)		2,666		1,980
Balance at January 2, 2022	$	(116,320)	$	(6,728)	$	(123,048)
Balance at October 2, 2022	$	(210,556)	$	2,412	$	(208,144)
Other comprehensive income (loss) before reclassifications	33,107		(535)		32,572
Amounts reclassified from accumulated other comprehensive loss
Interest rate contracts, net of tax (1)	—		446		446
Net current-period other comprehensive income (loss)	33,107		(89)		33,018
Balance at January 1, 2023	$	(177,449)	$	2,323	$	(175,126)

(1)    This accumulated other comprehensive component is reclassified to “Interest expense” in our consolidated statements of income. See Note 15 “Derivative Financial Instruments”, for more information.

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Commitments and Contingencies	3 Months Ended
	Jan. 01, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We are subject to certain claims and lawsuits typically filed against the consulting and engineering profession, alleging primarily professional errors or omissions. We carry professional liability insurance, subject to certain deductibles and policy limits, against such claims. However, in some actions, parties are seeking damages that exceed our insurance coverage or for which we are not insured. While management does not believe that the resolution of these claims will have a material adverse effect, individually or in aggregate, on our financial position, results of operations or cash flows, management acknowledges the uncertainty surrounding the ultimate resolution of these matters. On July 15, 2019, following an initial January 14, 2019 filing, the Civil Division of the United States Attorney's Office filed an amended complaint in intervention in three qui tam actions filed against our subsidiary, Tetra Tech EC, Inc. ("TtEC"), in the U.S. District Court for the Northern District of California. The complaint alleges False Claims Act violations and breach of contract related to TtEC's contracts to perform environmental remediation services at the former Hunters Point Naval Shipyard in San Francisco, California. TtEC disputes the claims and will defend this matter vigorously. We are currently unable to determine the probability of the outcome of this matter or the range of reasonably possible loss, if any.

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Related Party Transactions

3 Months Ended

Jan. 01, 2023

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

We often provide services to unconsolidated joint ventures. Our revenue related to services we provided to unconsolidated joint ventures for the first quarters of fiscal 2023 and 2022 was approximately $23 million and $26 million, respectively. Our related reimbursable costs for the first quarters of fiscal 2023 and 2022 were approximately $22 million and $25 million, respectively. Our consolidated balance sheets also included the following amounts related to these services (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Accounts receivable, net	$	18,376	$	16,818
Contract assets	2,140		2,935
Contract liabilities	3,514		3,464

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Recent Accounting Pronouncements (Policies)

3 Months Ended

Jan. 01, 2023

Accounting Changes and Error Corrections [Abstract]

Recent Accounting Pronouncements

In November 2021, the Financial Accounting Standards Board ("FASB") issued ASU 2021-10, Government Assistance (Topic 832), which requires annual disclosures for transactions with a government authority that are accounted for by applying a grant or contribution model by analogy, including (1) the types of transactions, (2) the accounting for those transactions, and (3) the effect of those transactions on an entity's financial statements. ASU 2021-10 was effective for us beginning in the first quarter of fiscal 2023.

In fiscal 2020, the Canadian federal government implemented the Canadian Emergency Wage Subsidy ("CEWS") program in response to the negative impact of the coronavirus disease 2019 ("COVID-19") pandemic on businesses operating in Canada. Our Canadian legal entities qualified for and applied for these CEWS cash benefits to partially offset the impacts of revenue reductions and on-going staffing costs. The $26.0 million total received was initially recorded in "Other current liabilities" until all potential amendments to the qualification criteria, including some that were proposed with retroactive application, were finalized in fiscal 2022. As there are no further contingencies, beginning in fiscal 2023, the amounts received will be distributed to all Canadian employees. We expect to distribute approximately $9 million in the next twelve months. Accordingly, this amount was reclassified from "Other current liabilities" to "Accrued compensation" on our consolidated balance sheet at October 2, 2022. The remaining $17.0 million, which we expect to distribute beyond one year, was reclassified to "Other non-current liabilities". We do not expect there will be any related impact to our operating income, and we have no outstanding applications for further government assistance.

Revenue and Contract Assets and Contract Liabilities

We invoice customers based on the contractual terms of each contract. However, the timing of revenue recognition may differ from the timing of invoice issuance.

Contract assets represent revenue recognized in excess of the amounts for which we have the contractual right to bill our customers. Such amounts are recoverable from customers based upon various measures of performance, including achievement of certain milestones or completion of a contract. In addition, many of our time and materials arrangements are billed in arrears pursuant to contract terms that are standard within the industry, resulting in contract assets and/or unbilled receivables being recorded, as revenue is recognized in advance of billings. Contract retentions, included in contract assets, represent amounts withheld by clients until certain conditions are met or the project is completed, which may extend beyond one year.

Contract liabilities consist of billings in excess of revenue recognized. Contract liabilities decrease as we recognize revenue from the satisfaction of the related performance obligation and increase as billings in advance of revenue recognition occur. Contract assets and liabilities are reported in a net position on a contract-by-contract basis at the end of each reporting period. There were no substantial non-current contract assets or liabilities for the periods presented.We recognize revenue primarily using the cost-to-cost measure of progress method to estimate progress towards completion. Changes in those estimates could result in the recognition of cumulative catch-up adjustments to the contract’s inception-to-date revenue, costs and profit in the period in which such changes are made.Our RUPO represents a measure of the total dollar value of work to be performed on contracts awarded and in progress. We had $3.8 billion of RUPO at January 1, 2023. RUPO increases with awards from new contracts or additions on existing contracts and decreases as work is performed and revenue is recognized on existing contracts. RUPO may also decrease when projects are canceled or modified in scope. We include a contract within our RUPO when the contract is awarded and an agreement on contract terms has been reached.Although RUPO reflects business that is considered to be firm, cancellations, deferrals or scope adjustments may occur. RUPO is adjusted to reflect any known project cancellations, revisions to project scope and cost, foreign currency exchange fluctuations and project deferrals, as appropriate. Our operations and maintenance contracts can generally be terminated by the clients without a substantive financial penalty. Therefore, the remaining performance obligations on such contracts are limited to the notice period required for the termination (usually 30, 60, or 90 days).

Accounts Receivable, Net

Billed accounts receivable represent amounts billed to clients that have not been collected. Unbilled accounts receivable, which represent an unconditional right to payment subject only to the passage of time, include unbilled amounts typically resulting from revenue recognized but not yet billed pursuant to contract terms or billed after the period end date. Substantially all of our unbilled receivables at January 1, 2023 are expected to be billed and collected within 12 months. The allowance for doubtful accounts represents amounts that are expected to become uncollectible or unrealizable in the future. We determine an estimated allowance for uncollectible accounts based on management's consideration of trends in the actual and forecasted credit quality of our clients, including delinquency and payment history; type of client, such as a government agency or a commercial sector client; and general economic and industry conditions. Claims are amounts in excess of agreed contract prices that we seek to collect from our clients or other third parties for delays, errors in specifications and designs, contract terminations, change orders in dispute or unapproved as to both scope and price, or other causes of unanticipated additional costs. We regularly evaluate all unsettled claim amounts and record appropriate adjustments to revenue when it is probable that the claim will result in a different contract value than the amount previously estimated.

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Revenue and Contract Balances (Tables)

3 Months Ended

Jan. 01, 2023

Revenue from Contract with Customer [Abstract]

Summary of revenue disaggregated by client sector and contract type

The following tables present revenue disaggregated by client sector and contract type (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Client Sector:
U.S. federal government (1)	$	276,075	$	266,797
U.S. state and local government	153,195		159,008
U.S. commercial	198,956		176,904
International (2)	266,540		255,801
Total	$	894,766	$	858,510
Contract Type:
Fixed-price	$	327,737	$	331,248
Time-and-materials	420,570		395,648
Cost-plus	146,459		131,614
Total	$	894,766	$	858,510

(1)    Includes revenue generated under U.S. federal government contracts performed outside the United States.

(2)    Includes revenue generated from foreign operations, primarily in Canada, Australia, the United Kingdom, and revenue generated from non-U.S. clients.

Summary of net contract assets/liabilities

Net contract assets/liabilities consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Contract assets (1)	$	80,903	$	92,405
Contract liabilities	274,118		241,340
Net contract liabilities	$	(193,215)	$	(148,935)

(1)    Includes $17.2 million and $23.3 million of contract retentions at January 1, 2023 and October 2, 2022, respectively.

Components of net accounts receivable

Net accounts receivable consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Billed	$	486,027	$	491,700
Unbilled	313,782		267,161
Total accounts receivable	799,809		758,861
Allowance for doubtful accounts	(3,937)		(3,749)
Total accounts receivable, net	$	795,872	$	755,112

Remaining performance obligation, expected timing

We expect to satisfy our RUPO at January 1, 2023 over the following periods (in thousands):

	Amount
Within 12 months	$	2,460,171
Beyond	1,329,949
Total	$	3,790,120

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Jan. 01, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of changes in the carrying value of goodwill

The following table summarizes the changes in the carrying value of goodwill by reportable segment (in thousands):

	GSG		CIG		Total
Balance at October 2, 2022	$	519,102	$	591,310	$	1,110,412
Translation adjustments	2,792		20,099		22,891
Balance at January 1, 2023	$	521,894	$	611,409	$	1,133,303

Summary of acquired identifiable intangible assets with finite useful lives

The following table presents the gross amount and accumulated amortization of our acquired identifiable intangible assets with finite useful lives included in “Intangible assets, net” on the consolidated balance sheets ($ in thousands):

	Period Ended
	January 1, 2023							October 2, 2022
	Weighted- Average Remaining Life (in Years)	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Client relations	5.4	$	43,601	$	(23,081)	$	20,520	$	41,676	$	(21,092)	$	20,584
Backlog	0.4	34,837		(33,033)		1,804		33,286		(29,990)		3,296
Trade names	3.5	13,656		(8,444)		5,212		12,711		(7,428)		5,283
Total		$	92,094	$	(64,558)	$	27,536	$	87,673	$	(58,510)	$	29,163

Estimated amortization expense for the remainder of the fiscal year and the succeeding years

Estimated amortization expense for the remainder of fiscal 2023 and succeeding years is as follows (in thousands):

	Amount
2023 (remaining)	$	6,755
2024	5,552
2025	4,719
2026	3,869
2027	2,349
Beyond	4,292
Total	$	27,536

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Property and Equipment (Tables)

3 Months Ended

Jan. 01, 2023

Property, Plant and Equipment [Abstract]

Schedule of components of property and equipment

Property and equipment consisted of the following (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Equipment, furniture and fixtures	$	101,002	$	96,710
Leasehold improvements	32,985		32,428
Total property and equipment	133,987		129,138
Accumulated depreciation	(99,097)		(96,822)
Property and equipment, net	$	34,890	$	32,316

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Stock Repurchase and Dividends (Tables)

3 Months Ended

Jan. 01, 2023

Stock Repurchase And Dividends [Abstract]

Summary of dividends declared and paid

The following table presents dividends declared and paid in the first three months of fiscal 2023 and 2022:

Declare Date	Dividend Paid Per Share		Record Date	Payment Date	Dividend Paid (in thousands)
November 7, 2022	$	0.23	November 21, 2022	December 9, 2022	$	12,186
November 15, 2021	$	0.20	December 2, 2021	December 20, 2021	$	10,793

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Leases (Tables)

3 Months Ended

Jan. 01, 2023

Leases [Abstract]

Summary of components of lease cost

The components of lease costs are as follows (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Operating lease cost	$	20,961	$	21,751
Sublease income	(32)		(125)
Total lease cost	$	20,929	$	21,626

Supplemental cash flow information related to leases is as follows (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Operating cash flows for operating leases	$	16,493	$	17,519
Financing cash flows for finance leases	1,316		945
Right-of-use assets obtained in exchange for new operating lease liabilities	11,117		12,347
Right-of-use assets obtained in exchange for new finance lease liabilities	$	1,431	$	1,349

Summary of supplemental balance sheet and other information

Supplemental balance sheet and other information related to leases are as follows (in thousands):

	Balance at
	January 1, 2023			October 2, 2022
Operating leases:
Right-of-use assets	$	182,500		$	182,319
Lease liabilities:
Current	55,809			57,865
Non-current	148,034			146,285
Total operating lease liabilities	$	203,843		$	204,150
Finance leases:
Other non-current assets	$	9,932		$	9,564
Other current liabilities	$	4,582		$	4,481
Other non-current liabilities	$	5,343		$	4,745
Weighted-average remaining lease term:
Operating leases	5 years			5 years
Finance leases	2 years			2 years
Weighted-average discount rate:
Operating leases	2.2		%	2.2		%
Finance leases	3		%	3		%

Summary of maturity of future undiscounted cash flows associated with operating lease liabilities

A maturity analysis of the future undiscounted cash flows associated with our lease liabilities at January 1, 2023 is as follows (in thousands):

	Operating Leases		Finance Leases
2023 (remaining)	$	49,216	$	3,787
2024	51,833		3,699
2025	39,744		2,182
2026	25,234		574
2027	17,870		211
Beyond	32,484		—
Total lease payments	216,381		10,453
Less: imputed interest	(12,538)		(521)
Total present value of lease liabilities	$	203,843	$	9,932

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Earnings per Share ("EPS") (Tables)

3 Months Ended

Jan. 01, 2023

Earnings Per Share [Abstract]

Schedule of number of weighted-average shares used to compute basic and diluted EPS

The following table presents the number of weighted-average shares used to compute basic and diluted EPS (in thousands, except per share data):

	Three Months Ended
	January 1, 2023		January 2, 2022
Net income attributable to Tetra Tech	$	116,706	$	68,489
Weighted-average common shares outstanding – basic	53,069		53,937
Effect of dilutive stock options and unvested restricted stock	460		640
Weighted-average common shares outstanding – diluted	53,529		54,577
Earnings per share attributable to Tetra Tech:
Basic	$	2.20	$	1.27
Diluted	$	2.18	$	1.25

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Reportable Segments (Tables)

3 Months Ended

Jan. 01, 2023

Segment Reporting [Abstract]

Summarized financial information of reportable segments

The following tables summarize financial information regarding our reportable segments (in thousands):

	Three Months Ended
	January 1, 2023		January 2, 2022
Revenue
GSG	$	471,067	$	456,099
CIG	439,556		416,286
Elimination of inter-segment revenue	(15,857)		(13,875)
Total revenue	$	894,766	$	858,510
Income from operations
GSG	$	60,347	$	51,179
CIG	50,108		45,308
Corporate (1)	(18,405)		(9,267)
Total income from operations	$	92,050	$	87,220

(1)     Includes amortization of intangibles, other costs and other income not allocable to our reportable segments.

	Balance at
	January 1, 2023		October 2, 2022
Total Assets
GSG	$	586,128	$	558,764
CIG	742,288		688,640
Corporate (1)	1,403,064		1,375,372
Total assets	$	2,731,480	$	2,622,776

(1)    Corporate assets consist of intercompany eliminations and assets not allocated to our reportable segments including goodwill, intangible assets, deferred income taxes and certain other assets.

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Reclassifications Out of Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Jan. 01, 2023

Equity [Abstract]

Summary of reclassifications out of accumulated other comprehensive income

The accumulated balances and activities for the three months ended January 1, 2023 and January 2, 2022 related to reclassifications out of accumulated other comprehensive income are summarized as follows (in thousands):

	Three Months Ended
	Foreign Currency Translation Adjustments		Gain (Loss) on Derivative Instruments		Accumulated Other Comprehensive Income (Loss)
Balance at October 3, 2021	$	(115,634)	$	(9,394)	$	(125,028)
Other comprehensive income (loss) before reclassifications	(686)		4,032		3,346
Amounts reclassified from accumulated other comprehensive loss
Interest rate contracts, net of tax (1)	—		(1,366)		(1,366)
Net current-period other comprehensive income (loss)	(686)		2,666		1,980
Balance at January 2, 2022	$	(116,320)	$	(6,728)	$	(123,048)
Balance at October 2, 2022	$	(210,556)	$	2,412	$	(208,144)
Other comprehensive income (loss) before reclassifications	33,107		(535)		32,572
Amounts reclassified from accumulated other comprehensive loss
Interest rate contracts, net of tax (1)	—		446		446
Net current-period other comprehensive income (loss)	33,107		(89)		33,018
Balance at January 1, 2023	$	(177,449)	$	2,323	$	(175,126)

(1)    This accumulated other comprehensive component is reclassified to “Interest expense” in our consolidated statements of income. See Note 15 “Derivative Financial Instruments”, for more information.

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Related Party Transactions (Tables)

3 Months Ended

Jan. 01, 2023

Related Party Transactions [Abstract]

Schedule of related party transactions

Our consolidated balance sheets also included the following amounts related to these services (in thousands):

	Balance at
	January 1, 2023		October 2, 2022
Accounts receivable, net	$	18,376	$	16,818
Contract assets	2,140		2,935
Contract liabilities	3,514		3,464

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Recent Accounting Pronouncements (Details) $ in Millions	Oct. 02, 2022 USD ($)
Accounting Changes and Error Corrections [Abstract]
Government assistance, amount, cumulative, current	$ 26.0
Government assistance, amount expected to be recognized in next twelve months	9.0
Government assistance, amount, cumulative, noncurrent	$ 17.0

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Revenue and Contract Balances - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 894,766	$ 858,510
Fixed-price
Disaggregation of Revenue [Line Items]
Revenue	327,737	331,248
Time-and-materials
Disaggregation of Revenue [Line Items]
Revenue	420,570	395,648
Cost-plus
Disaggregation of Revenue [Line Items]
Revenue	146,459	131,614
U.S. federal government
Disaggregation of Revenue [Line Items]
Revenue	276,075	266,797
U.S. state and local government
Disaggregation of Revenue [Line Items]
Revenue	153,195	159,008
U.S. commercial
Disaggregation of Revenue [Line Items]
Revenue	198,956	176,904
International
Disaggregation of Revenue [Line Items]
Revenue	$ 266,540	$ 255,801

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Revenue and Contract Balances - Summary of Contract Liabilities/Assets (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Oct. 02, 2022
Disaggregation of Revenue [Line Items]
Contract assets	$ 80,903	$ 92,405
Contract liabilities	274,118	241,340
Net contract liabilities	(193,215)	(148,935)
Contract Retentions
Disaggregation of Revenue [Line Items]
Contract assets	$ 17,200	$ 23,300

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Revenue and Contract Balances - Narrative (Details) - USD ($)	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022	Oct. 02, 2022
Disaggregation of Revenue [Line Items]
Contract liability revenue recognized during the period	$ 81,000,000	$ 63,000,000
Net favorable (unfavorable) revenue and operating income adjustments	3,500,000	2,800,000
Liabilities for anticipated losses	7,600,000		$ 10,000,000
Estimated cost to complete the related contracts	$ 55,000,000		80,000,000
Period for billing and collecting unbilled receivables	12 months
Remaining unsatisfied performance obligation	$ 3,790,120,000
Remaining performance obligation, termination notice period one	30 days
Remaining performance obligation, termination notice period two	60 days
Remaining performance obligation, termination notice period three	90 days
Remediation and Construction Management
Disaggregation of Revenue [Line Items]
Accounts receivable related to claims and requests for equitable adjustment on contracts			$ 0
CIG
Disaggregation of Revenue [Line Items]
Net favorable (unfavorable) revenue and operating income adjustments	$ 0	$ 0

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Revenue and Contract Balances - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Oct. 02, 2022
Revenue from Contract with Customer [Abstract]
Billed	$ 486,027	$ 491,700
Unbilled	313,782	267,161
Total accounts receivable	799,809	758,861
Allowance for doubtful accounts	(3,937)	(3,749)
Total accounts receivable, net	$ 795,872	$ 755,112

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Revenue and Contract Balances - Remaining Unsatisfied Performance Obligations (Details) $ in Thousands	Jan. 01, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining unsatisfied performance obligation	$ 3,790,120
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining unsatisfied performance obligation	$ 2,460,171
Remaining unsatisfied performance obligation, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining unsatisfied performance obligation	$ 1,329,949
Remaining unsatisfied performance obligation, expected timing of satisfaction

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Acquisitions (Details) £ / shares in Units, £ in Millions, $ in Millions			3 Months Ended	12 Months Ended
	Jan. 03, 2023 employee program	Sep. 23, 2022 employee £ / shares	Jan. 01, 2023 USD ($)	Oct. 02, 2022 USD ($) acquisition	Jan. 23, 2023 GBP (£)	Dec. 31, 2022 GBP (£)	Dec. 30, 2022 USD ($)	Dec. 28, 2022 GBP (£)	Dec. 28, 2022 USD ($)
Business Acquisition [Line Items]
Pence per share expected to be acquired | £ / shares		£ 2.22
Number of acquisitions | acquisition				4
Minimum
Business Acquisition [Line Items]
Significant unobservable input, earn-out period			3 years
Minimum | Existing customer contracts
Business Acquisition [Line Items]
Useful life of intangible assets			1 year
Minimum | Trade names
Business Acquisition [Line Items]
Useful life of intangible assets			3 years
Maximum
Business Acquisition [Line Items]
Significant unobservable input, earn-out period			5 years
Maximum | Existing customer contracts
Business Acquisition [Line Items]
Useful life of intangible assets			10 years
Maximum | Trade names
Business Acquisition [Line Items]
Useful life of intangible assets			5 years
RPS Group PLC
Business Acquisition [Line Items]
Number of employees | employee		5,000
RPS Group PLC | Foreign Exchange Forward
Business Acquisition [Line Items]
Notional amount						£ 714.0	$ 774.8	£ 714.0	$ 775.4
RPS Group PLC | Subsequent Event | Foreign Exchange Forward
Business Acquisition [Line Items]
Notional amount | £					£ 714.0
Amyx, Inc. | Subsequent Event
Business Acquisition [Line Items]
Number of employees | employee	500
Number of government programs acquired | program	30
Business acquisitions
Business Acquisition [Line Items]
Fair value of acquisition purchase price				$ 88.3
Aggregate maximum of contingent consideration				47.0
Initial cash payments				44.0
Receivables related to estimated post-closing adjustments				2.5
Payables related to promissory note				15.5
Contingent earn-out liability				$ 31.3
Business acquisitions | Minimum
Business Acquisition [Line Items]
Earn-out period				3 years
Business acquisitions | Maximum
Business Acquisition [Line Items]
Earn-out period				5 years
All acquisitions
Business Acquisition [Line Items]
Aggregate maximum of contingent consideration			$ 120.9
Contingent earn-out liability			$ 69.0

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Goodwill and Intangible Assets - Goodwill (Details) $ in Thousands	3 Months Ended
	Jan. 01, 2023 USD ($)
Goodwill
Balance at beginning of the period	$ 1,110,412
Translation adjustments	22,891
Balance at end of the period	1,133,303
GSG
Goodwill
Balance at beginning of the period	519,102
Translation adjustments	2,792
Balance at end of the period	521,894
CIG
Goodwill
Balance at beginning of the period	591,310
Translation adjustments	20,099
Balance at end of the period	$ 611,409

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Goodwill and Intangible Assets - Narrative (Details) - USD ($)		3 Months Ended
	Jul. 04, 2022	Jan. 01, 2023	Jan. 02, 2022	Oct. 02, 2022
Goodwill [Line Items]
Impairment of goodwill	$ 0
Percentage of excess of fair value over carrying value (less than)	165.00%
Amortization expense		$ 3,400,000	$ 2,700,000
GSG
Goodwill [Line Items]
Gross amounts of goodwill		539,600,000		$ 536,800,000
Accumulated impairment		17,700,000		17,700,000
CIG
Goodwill [Line Items]
Gross amounts of goodwill		732,900,000		712,800,000
Accumulated impairment		$ 121,500,000		$ 121,500,000

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Goodwill and Intangible Assets - Gross Amount and Accumulated Amortization of Acquired Finite-lived Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Oct. 02, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 92,094	$ 87,673
Accumulated Amortization	(64,558)	(58,510)
Net Amount	$ 27,536	29,163
Client relations
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Life (in Years)	5 years 4 months 24 days
Gross Amount	$ 43,601	41,676
Accumulated Amortization	(23,081)	(21,092)
Net Amount	$ 20,520	20,584
Backlog
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Life (in Years)	4 months 24 days
Gross Amount	$ 34,837	33,286
Accumulated Amortization	(33,033)	(29,990)
Net Amount	$ 1,804	3,296
Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Life (in Years)	3 years 6 months
Gross Amount	$ 13,656	12,711
Accumulated Amortization	(8,444)	(7,428)
Net Amount	$ 5,212	$ 5,283

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Goodwill and Intangible Assets - Estimated Amortization Expense (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Oct. 02, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
2023 (remaining)	$ 6,755
2024	5,552
2025	4,719
2026	3,869
2027	2,349
Beyond	4,292
Net Amount	$ 27,536	$ 29,163

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Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022	Oct. 02, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 133,987		$ 129,138
Accumulated depreciation	(99,097)		(96,822)
Property and equipment, net	34,890		32,316
Depreciation expense related to property and equipment	3,200	$ 3,400
Equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	101,002		96,710
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 32,985		$ 32,428

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Stock Repurchase and Dividends - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions					3 Months Ended
	Feb. 24, 2023	Jan. 30, 2023	Dec. 09, 2022	Dec. 20, 2021	Jan. 01, 2023	Jan. 02, 2022	Oct. 05, 2021
Subsequent Event [Line Items]
Remaining authorized amount under share repurchase program					$ 347.8
Dividend paid per share (in dollars per share)			$ 0.23	$ 0.20	$ 0.23	$ 0.20
Subsequent Event
Subsequent Event [Line Items]
Quarterly cash dividend declared (in dollars per share)		$ 0.23
Forecast
Subsequent Event [Line Items]
Dividend paid per share (in dollars per share)	$ 0.23
October 2021 Stock Repurchase Program
Subsequent Event [Line Items]
Maximum repurchase amount under stock repurchase program							$ 400.0

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Stock Repurchase and Dividends - Schedule of Dividends Declared and Paid (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Dec. 09, 2022	Dec. 20, 2021	Jan. 01, 2023	Jan. 02, 2022
Stock Repurchase And Dividends [Abstract]
Dividend paid per share (in dollars per share)	$ 0.23	$ 0.20	$ 0.23	$ 0.20
Dividend Paid	$ 12,186	$ 10,793

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Leases - Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Oct. 02, 2022
Lessee, Lease, Description [Line Items]
Renewal term (up to)	5 years
Other non-current assets	$ 9,932	$ 9,564
Total present value of lease liabilities	9,932
Operating leases not yet commenced	$ 8,000
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 month
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	10 years

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Leases - Components of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Leases [Abstract]
Operating lease cost	$ 20,961	$ 21,751
Sublease income	(32)	(125)
Total lease cost	$ 20,929	$ 21,626

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Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Leases [Abstract]
Operating cash flows for operating leases	$ 16,493	$ 17,519
Financing cash flows for finance leases	1,316	945
Right-of-use assets obtained in exchange for new operating lease liabilities	11,117	12,347
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 1,431	$ 1,349

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Leases - Supplemental Balance Sheet and Other Information (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Oct. 02, 2022
Operating leases:
Right-of-use assets	$ 182,500	$ 182,319
Lease liabilities:
Current	55,809	57,865
Non-current	148,034	146,285
Total operating lease liabilities	203,843	204,150
Finance leases:
Other non-current assets	9,932	9,564
Other current liabilities	4,582	4,481
Other non-current liabilities	$ 5,343	$ 4,745
Weighted-average remaining lease term:
Operating leases	5 years	5 years
Finance leases	2 years	2 years
Weighted-average discount rate:
Operating leases	2.20%	2.20%
Finance leases	3.00%	3.00%

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Leases - Maturity Analysis of the Future Undiscounted Cash Flows of Operating and Finance Lease Liabilities (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Oct. 02, 2022
Operating Leases
2023 (remaining)	$ 49,216
2024	51,833
2025	39,744
2026	25,234
2027	17,870
Beyond	32,484
Total lease payments	216,381
Less: imputed interest	(12,538)
Total present value of lease liabilities	203,843	$ 204,150
Finance Leases
2023 (remaining)	3,787
2024	3,699
2025	2,182
2026	574
2027	211
Beyond	0
Total lease payments	10,453
Less: imputed interest	(521)
Total present value of lease liabilities	$ 9,932

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Stockholders' Equity and Stock Compensation Plans (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 7.2	$ 5.8
PSU's
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	55,708
Fair value of awards granted (in dollars per share)	$ 204.00
Vesting period	3 years
Percentage of shares that ultimately vest depending on growth in diluted earnings per share	50.00%
Percentage of shares that ultimately vest depending on the shareholder return relative to peer group of companies over vesting period	50.00%
RSU's
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	98,305
Fair value of awards granted (in dollars per share)	$ 156.52
RSU's | Executive officers and employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
RSU's | Non-employee director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year

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Earnings per Share ("EPS") (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Earnings Per Share [Abstract]
Net income attributable to Tetra Tech, basic	$ 116,706	$ 68,489
Net income attributable to Tetra Tech, diluted	$ 116,706	$ 68,489
Weighted-average common shares outstanding – basic (in shares)	53,069	53,937
Effect of dilutive stock options and unvested restricted stock (in shares)	460	640
Weighted-average common stock outstanding – diluted (in shares)	53,529	54,577
Earnings per share attributable to Tetra Tech:
Basic (in dollars per share)	$ 2.20	$ 1.27
Diluted (in dollars per share)	$ 2.18	$ 1.25

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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022	Oct. 02, 2022
Income Tax Disclosure [Abstract]
Effective tax rate	24.50%	18.80%
Reduction in income tax expense due to excess tax benefits on share-based payments	$ 1.7	$ 4.5
Effective tax rate, excluding excess tax benefits on share-based payments	25.70%	24.10%
Liability for uncertain tax positions	$ 10.8		$ 10.6

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Reportable Segments (Details) $ in Thousands	3 Months Ended
	Jan. 01, 2023 USD ($) segment	Jan. 02, 2022 USD ($)	Oct. 02, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2
Revenue	$ 894,766	$ 858,510
Income from operations	92,050	87,220
Total Assets	2,731,480		$ 2,622,776
Operating segments | GSG
Segment Reporting Information [Line Items]
Revenue	471,067	456,099
Income from operations	60,347	51,179
Total Assets	586,128		558,764
Operating segments | CIG
Segment Reporting Information [Line Items]
Revenue	439,556	416,286
Income from operations	50,108	45,308
Total Assets	742,288		688,640
Elimination of inter-segment revenue
Segment Reporting Information [Line Items]
Revenue	(15,857)	(13,875)
Corporate
Segment Reporting Information [Line Items]
Income from operations	(18,405)	$ (9,267)
Total Assets	$ 1,403,064		$ 1,375,372

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Fair Value Measurements (Details) $ in Millions	Jan. 01, 2023 USD ($)
Amended Credit Agreement
Debt Instrument [Line Items]
Amount outstanding under credit facility	$ 240.6

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Credit Facility (Details) - Amended Credit Agreement - USD ($)	Feb. 18, 2022	Oct. 26, 2022
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 750,000,000
Accordion feature, higher borrowing capacity option	$ 1,050,000,000.00	$ 1,550,000,000
Debt instrument term	5 years
Accordion feature, increase limit	$ 300,000,000
Annual principal payment, amortization percentage	5.00%
Debt covenant, maximum consolidated leverage ratio	3.25
Debt covenant, maximum consolidated leverage ratio	3.00
New Term Loan Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 500,000,000
Term Loan Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 250,000,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 500,000,000
Revolving Credit Facility | Base Rate | Fed Funds Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility | Base Rate | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility | Minimum | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility | Minimum | Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.00%
Revolving Credit Facility | Maximum | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.875%
Revolving Credit Facility | Maximum | Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.875%
Standby Letters of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 100,000,000
Swingline Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity	20,000,000
Multicurrency Borrowings and Letters of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 300,000,000

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Derivative Financial Instruments (Details) $ in Thousands, £ in Millions		3 Months Ended		12 Months Ended
	Jan. 23, 2023 USD ($)	Jan. 01, 2023 USD ($)	Jan. 02, 2022 USD ($)	Sep. 30, 2018 agreement	Jan. 23, 2023 GBP (£)	Dec. 31, 2022 GBP (£)	Dec. 30, 2022 USD ($)	Dec. 28, 2022 USD ($)	Dec. 28, 2022 GBP (£)	Oct. 02, 2022 USD ($)
Derivative [Line Items]
Gain on foreign currency forward contract		$ 67,995	$ 0
Gains (losses) on cash flow hedges recognized in comprehensive income		(89)	$ 2,666
RPS Group PLC
Derivative [Line Items]
Derivative, forward exchange rate							1.0852	1.086	1.086
Interest Rate Swap | Designated as cash flow hedges | Derivatives designated as hedging instruments
Derivative [Line Items]
Notional amount		$ 196,900
Number of derivative agreements | agreement				5
Fixed rate		2.79%
Credit to be reclassified during next twelve months		$ 2,200
Interest Rate Swap | Designated as cash flow hedges | Derivatives designated as hedging instruments | Other current liabilities
Derivative [Line Items]
Fair value loss of interest rate swap agreements										$ 2,400
Interest Rate Swap | Designated as cash flow hedges | Derivatives designated as hedging instruments | Other Noncurrent Assets
Derivative [Line Items]
Fair value gain of interest rate swap agreements		2,300
Interest Rate Swap 1 | Designated as cash flow hedges | Derivatives designated as hedging instruments
Derivative [Line Items]
Notional amount		39,400
Interest Rate Swap 2 | Designated as cash flow hedges | Derivatives designated as hedging instruments
Derivative [Line Items]
Notional amount		39,400
Interest Rate Swap 3 | Designated as cash flow hedges | Derivatives designated as hedging instruments
Derivative [Line Items]
Notional amount		39,400
Interest Rate Swap 4 | Designated as cash flow hedges | Derivatives designated as hedging instruments
Derivative [Line Items]
Notional amount		39,400
Interest Rate Swap 5 | Designated as cash flow hedges | Derivatives designated as hedging instruments
Derivative [Line Items]
Notional amount		39,400
Foreign Exchange Forward | RPS Group PLC
Derivative [Line Items]
Notional amount						£ 714.0	$ 774,800	$ 775,400	£ 714.0
Foreign currency forward contract, asset fair value		87,900								$ 19,900
Gain on foreign currency forward contract		$ 68,000
Foreign Exchange Forward | RPS Group PLC | Subsequent Event
Derivative [Line Items]
Notional amount | £					£ 714.0
Gain on foreign currency forward contract	$ 109,000

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Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022
Reclassifications out of accumulated other comprehensive income (loss)
Beginning balance	$ 1,183,137	$ 1,234,291
Amounts reclassified from accumulated other comprehensive loss
Other comprehensive income, net of tax	33,018	1,980
Ending balance	1,323,967	1,237,945
Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive income (loss)
Beginning balance	(208,144)	(125,028)
Other comprehensive income (loss) before reclassifications	32,572	3,346
Amounts reclassified from accumulated other comprehensive loss
Interest rate contracts, net of tax	446	(1,366)
Other comprehensive income, net of tax	33,018	1,980
Ending balance	(175,126)	(123,048)
Foreign Currency Translation Adjustments
Reclassifications out of accumulated other comprehensive income (loss)
Beginning balance	(210,556)	(115,634)
Other comprehensive income (loss) before reclassifications	33,107	(686)
Amounts reclassified from accumulated other comprehensive loss
Other comprehensive income, net of tax	33,107	(686)
Ending balance	(177,449)	(116,320)
Gain (Loss) on Derivative Instruments
Reclassifications out of accumulated other comprehensive income (loss)
Beginning balance	2,412	(9,394)
Other comprehensive income (loss) before reclassifications	(535)	4,032
Amounts reclassified from accumulated other comprehensive loss
Interest rate contracts, net of tax	446	(1,366)
Other comprehensive income, net of tax	(89)	2,666
Ending balance	$ 2,323	$ (6,728)

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Commitments and Contingencies (Details)	Jul. 15, 2019 action
Commitments and Contingencies Disclosure [Abstract]
Number of qui tam actions	3

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Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2023	Jan. 02, 2022	Oct. 02, 2022
Related Party Transactions [Abstract]
Related party revenues	$ 23,000	$ 26,000
Related party expenses	22,000	$ 25,000
Accounts receivable, net	18,376		$ 16,818
Contract assets	2,140		2,935
Contract liabilities	$ 3,514		$ 3,464