Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 28, 2025	Sep. 28, 2025
Current assets:
Cash and cash equivalents	$ 269,448	$ 167,459
Accounts receivable, net	1,082,417	1,158,928
Contract assets	140,429	138,232
Prepaid expenses and other current assets	112,145	98,768
Assets held-for-sale	0	57,502
Total current assets	1,604,439	1,620,889
Property and equipment, net	65,395	66,148
Right-of-use assets, operating leases	199,552	197,618
Goodwill	2,065,914	2,049,874
Intangible assets, net	113,567	121,160
Deferred tax assets	92,638	106,238
Other non-current assets	123,222	120,247
Total assets	4,264,727	4,282,174
Current liabilities:
Accounts payable	196,730	204,725
Accrued compensation	221,817	346,912
Contract liabilities	435,373	420,254
Short-term lease liabilities, operating leases	69,681	69,099
Current contingent earn-out liabilities	18,093	24,826
Liabilities held-for-sale	0	25,115
Other current liabilities	279,100	288,113
Total current liabilities	1,220,794	1,379,044
Deferred tax liabilities	20,171	21,333
Long-term debt	834,256	763,363
Long-term lease liabilities, operating leases	154,444	154,695
Non-current contingent earn-out liabilities	33,299	32,135
Other non-current liabilities	155,125	151,440
Commitments and contingencies (Note 16)
Equity:
Preferred stock - authorized, 2,000 shares of $0.01 par value; no shares issued and outstanding at December 28, 2025 and September 28, 2025	0	0
Common stock - authorized, 750,000 shares of $0.01 par value; issued and outstanding, 260,811 and 261,418 shares at December 28, 2025 and September 28, 2025, respectively	2,608	2,614
Accumulated other comprehensive loss	(76,356)	(95,777)
Retained earnings	1,919,840	1,872,948
Tetra Tech stockholders’ equity	1,846,092	1,779,785
Noncontrolling interests	546	379
Total stockholders' equity	1,846,638	1,780,164
Total liabilities and stockholders' equity	$ 4,264,727	$ 4,282,174