1 unchanged sentence
Rule 10b5-1 Trading Plans
−Removed: During the first quarter of fiscal 2026, none of our directors or officers (as defined in Rule 16a-1(f) under the Exchange Act) adopted , modified or t erminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act or any "non-Rule 10b5-1 trading arrangement" as defined in Item 408(c) of Regulation S-K.
+Added: During the second quarter of fiscal 2026, none of our directors or officers (as defined in Rule 16a-1(f) under the Exchange Act) adopted , modified or t erminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act or any "non-Rule 10b5-1 trading arrangement" as defined in Item 408(c) of Regulation S-K.
The following documents are filed as Exhibits to this Report:
4 unchanged sentences
Mine Safety Disclosure.
−Removed: 101 The following financial information from our Company’s Quarterly Report on Form 10-Q, for the period ended December 28, 2025, formatted in Inline eXtensible Business Reporting Language:
+Added: 101 The following financial information from our Company’s Quarterly Report on Form 10-Q, for the period ended March 29, 2026, 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 Stockholders' Equity, (vi) Notes to Consolidated Financial Statements.
1 unchanged sentence
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.
−Removed: January 30, 2026 TETRA TECH, INC.
−Removed: Chairman and Chief Executive Officer
+Added: May 1, 2026 TETRA TECH, INC.
+Added: Chief Executive Officer and President
(Principal Executive Officer)
5 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.