TETRA TECH INC 10-K

ttek-20250928.htm

10-K

10-K

ttekex43q42025.htm

EX-4.3

EX-4.3

ttekex191q42025.htm

EX-19.1

EX-19.1

ttekex192q42025.htm

EX-19.2

EX-19.2

ttek-ex21q42025.htm

EX-21

EX-21

ttek-ex23q42025.htm

EX-23

EX-23

ttek-ex311q42025.htm

EX-31.1

EX-31.1

ttek-ex312q42025.htm

EX-31.2

EX-31.2

ttek-ex321q42025.htm

EX-32.1

EX-32.1

ttek-ex322q42025.htm

EX-32.2

EX-32.2

ttek-ex95q42025.htm

EX-95

EX-95

ttekex971q42025.htm

EX-97.1

EX-97.1

ttek-20250928.xsd

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