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Tetra Tech (TTEK) Latest Stock Analysis Report – Oct 15, 2026, 4:00 PM ET

Updated Oct 15, 2026, 4:00 PM ET

What changed since yesterday

TTEK jumps 3.5% to $34.78, 4 up days in a row. Closed at $34.78, +3.48% vs the prior close of $33.61. Day range $33.56–$34.97, opened at $33.56.

Last close$34.78+3.48%
Day range33.56–34.97
Open33.56
Volume2.31M
52-week range25.81–43.14
Avg volume (20d)2.14M

TTEK daily analysis — what happened

A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.

Oct 15, 2026 — TTEK jumps 3.5% to $34.78, 4 up days in a row
Oct 14, 2026 — TTEK ends flat (+0.2%) to $33.61, 3 up days in a row
Oct 13, 2026 — TTEK ends flat (+0.1%) to $33.54
Oct 12, 2026 — TTEK rises 0.4% to $33.49
Oct 9, 2026 — TTEK ends flat (-0.2%) to $33.34
Oct 8, 2026 — TTEK rises 2.1% to $33.41
Oct 7, 2026 — TTEK dips 2.0% to $32.72, a 1-month low
Oct 6, 2026 — TTEK ends flat (+0.2%) to $33.38
Oct 5, 2026 — TTEK rises 0.6% to $33.33
Oct 2, 2026 — TTEK dips 1.8% to $33.12

TTEK latest news & SEC filings

Every SEC filing by or about TTEK in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.

Sep 10, 2026 · 8-K — Current report

Current report — a filing companies must make within 4 business days of a major event

Source: SEC EDGAR filing 0001104659-26-106564

Aug 6, 2026 · 4 — Insider trade report (Form 4)

Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings

Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).

Source: SEC EDGAR filing 0001582882-26-000004

Aug 5, 2026 · S-8 — Registration of shares for employee stock plans (S-8)

Registration of shares for employee stock plans (S-8)

Source: SEC EDGAR filing 0001104659-26-091069

Jul 31, 2026 · 10-Q — Quarterly report (unaudited financial statements for the quarter)

Quarterly report (unaudited financial statements for the quarter)

Quarter ended Jun 28, 2026:

Source: SEC EDGAR filing 0000831641-26-000017

Jul 29, 2026 · 8-K — Current report

Current report — a filing companies must make within 4 business days of a major event

This is a results-day filing: the earnings press release is attached as an exhibit.

Source: SEC EDGAR filing 0001104659-26-088213

Things to know before you trade TTEK

TTEK market data (last 20 sessions)

DateOpenHighLowCloseVolume
Oct 15, 202633.5634.9733.5634.782.31M
Oct 14, 202633.6334.0333.2933.612.26M
Oct 13, 202633.6333.9033.1833.541.61M
Oct 12, 202633.4533.8733.4133.491.49M
Oct 9, 202633.4133.7033.2133.341.62M
Oct 8, 202632.7833.4332.2333.411.52M
Oct 7, 202633.1733.3132.0232.721.91M
Oct 6, 202633.3333.5833.1533.381.54M
Oct 5, 202633.0533.5532.5733.332.82M
Oct 2, 202633.7833.9332.9533.121.91M
Oct 1, 202633.0633.8732.9233.721.93M
Sep 30, 202633.6433.8632.9132.952.62M
Sep 29, 202633.7334.2533.5433.701.49M
Sep 28, 202633.5834.0133.2533.891.93M
Sep 25, 202633.4933.9533.3333.912.05M
Sep 24, 202634.7536.0033.6233.642.02M
Sep 23, 202635.4335.8134.5434.903.08M
Sep 22, 202635.9736.3335.2235.462.30M
Sep 21, 202635.8136.1935.6035.961.46M
Sep 18, 202636.1636.3135.5235.695.04M

About Tetra Tech

Tetra Tech (TTEK) is listed on the Nasdaq and classified by the SEC under “Services-Engineering Services”. Its business address is in PASADENA, CA. State of incorporation: DE. Fiscal year ends September 27. SEC CIK 831641.

TTEK board of directors & executives

From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).

Directors

NameRoleLatest filing
Dan L BatrackChairman and CEODec 2, 2025
Gary BirkenbeuelDirectorJan 14, 2026
Jeffrey R FeelerDirectorMay 15, 2026
Prashant GandhiDirectorDec 2, 2025
M Susan HardwickDirectorJan 28, 2026
Christiana ObiayaDirectorFeb 20, 2026
Kimberly E RitrieviDirectorMar 18, 2026
Eric W ThornburgDirectorApr 28, 2026
Kirsten M VolpiDirectorAug 6, 2026

Executive officers

NameTitleLatest filing
Roger R ArgusPresident and CEOFeb 20, 2026
Dan L BatrackChairman and CEODec 2, 2025
Steven M BurdickEVP, CFOFeb 6, 2026
Brian N CarterSVP, Corporate ControllerFeb 6, 2026
Preston HopsonEVP, Chief Legal/Human CapitalDec 2, 2025
Leslie L ShoemakerEVP, Chief SustainabilityDec 2, 2025

Recent insider buys & sales

DateInsiderTypeSharesPrice
May 15, 2026Jeffrey R FeelerBuy1,900$26.41
Feb 4, 2026Brian N CarterSale9,979$40.23

TTEK financials (annual, from XBRL filings)

Fiscal year endRevenueNet incomeDiluted EPSOperating cash flow
Sep 28, 2025$5.44B—0.93$457.69M
Sep 29, 2024$5.20B—1.23$358.71M
Oct 1, 2023$4.52B—1.02$368.46M
Oct 2, 2022$3.50B—0.97$336.19M
Oct 3, 2021$3.21B—4.26$304.37M

Latest balance sheet: total assets $4.39B, total liabilities $—, cash $230.84M (as of Jun 28, 2026).

TTEK earnings / results-day log

DateFilingClose that day
Jul 29, 20268-K Item 2.02 (results)$33.78
Apr 29, 20268-K Item 2.02 (results)$31.87
Jan 28, 20268-K Item 2.02 (results)$37.10
Nov 12, 20258-K Item 2.02 (results)$32.45
Jul 30, 20258-K Item 2.02 (results)$37.14
May 7, 20258-K Item 2.02 (results)$30.88
Jan 30, 20258-K Item 2.02 (results)$36.57
Nov 13, 20248-K Item 2.02 (results)$47.35
Jul 31, 20248-K Item 2.02 (results)—
May 1, 20248-K Item 2.02 (results)—
Jan 31, 20248-K Item 2.02 (results)—
Nov 15, 20238-K Item 2.02 (results)—

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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 15, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.