Weighted Average Number of Shares Outstanding, Basic of TETRA TECH INC from 28 Mar 2010 to 28 Dec 2025

Taxonomy & unit
us-gaap: shares
Description
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
Summary
TETRA TECH INC quarterly and annual Weighted Average Number of Shares Outstanding, Basic in shares history and change rate from 28 Mar 2010 to 28 Dec 2025.
  • TETRA TECH INC Weighted Average Number of Shares Outstanding, Basic for the quarter ending 28 Dec 2025 was 260,809,000, a 2.6% decline year-over-year.
  • TETRA TECH INC annual Weighted Average Number of Shares Outstanding, Basic for 2025 was 264,713,000, a 0.99% decline from 2024.
  • TETRA TECH INC annual Weighted Average Number of Shares Outstanding, Basic for 2024 was 267,364,000, a 0.51% increase from 2023.
  • TETRA TECH INC annual Weighted Average Number of Shares Outstanding, Basic for 2023 was 266,015,000, a 0.78% decline from 2022.
Source SEC data
View on sec.gov
Weighted Average Number of Shares Outstanding, Basic, Quarterly (shares)
Weighted Average Number of Shares Outstanding, Basic, YoY Quarterly Change (%)
Weighted Average Number of Shares Outstanding, Basic, Annual (shares)
Weighted Average Number of Shares Outstanding, Basic, YoY Annual Change (%)

TETRA TECH INC Quarterly Weighted Average Number of Shares Outstanding, Basic (shares)

Period TTM Value Value YoY Chg Change % Start Date End Date Report Filed Fiscal Year Fiscal Period
Q4 2025 260,809,000 -7,045,000 -2.6% 29 Sep 2025 28 Dec 2025 10-Q 30 Jan 2026 2026 Q1
Q3 2025 262,184,000 -5,503,000 -2.1% 30 Jun 2025 28 Sep 2025 10-K 20 Nov 2025 2025 FY
Q2 2025 263,026,000 -4,549,000 -1.7% 31 Mar 2025 29 Jun 2025 10-K 20 Nov 2025 2025 FY
Q1 2025 265,728,000 -1,692,000 -0.63% 30 Dec 2024 30 Mar 2025 10-K 20 Nov 2025 2025 FY
Q4 2024 267,854,000 +1,269,000 +0.48% 30 Sep 2024 29 Dec 2024 10-Q 30 Jan 2026 2026 Q1
Q3 2024 267,687,000 +1,452,000 +0.54% 01 Jul 2024 29 Sep 2024 10-K 20 Nov 2025 2025 FY
Q2 2024 267,575,000 +1,420,000 +0.53% 01 Apr 2024 30 Jun 2024 10-K 20 Nov 2025 2025 FY
Q1 2024 267,420,000 +1,285,000 +0.48% 01 Jan 2024 31 Mar 2024 10-K 20 Nov 2025 2025 FY
Q4 2023 266,585,000 +1,240,000 +0.47% 02 Oct 2023 31 Dec 2023 10-K 20 Nov 2025 2025 FY
Q3 2023 266,235,000 +213,087,000 +401% 03 Jul 2023 01 Oct 2023 10-K 19 Nov 2024 2024 FY
Q2 2023 266,155,000 +212,648,000 +397% 03 Apr 2023 02 Jul 2023 10-K 19 Nov 2024 2024 FY
Q1 2023 266,135,000 +212,301,000 +394% 02 Jan 2023 02 Apr 2023 10-K 19 Nov 2024 2024 FY
Q4 2022 265,345,000 +211,408,000 +392% 03 Oct 2022 01 Jan 2023 10-K 19 Nov 2024 2024 FY
Q3 2022 53,148,000 -871,000 -1.6% 04 Jul 2022 02 Oct 2022 10-K 22 Nov 2023 2023 FY
Q2 2022 53,507,000 -610,000 -1.1% 04 Apr 2022 03 Jul 2022 10-K 22 Nov 2023 2023 FY
Q1 2022 53,834,000 -353,000 -0.65% 03 Jan 2022 03 Apr 2022 10-K 22 Nov 2023 2023 FY
Q4 2021 53,937,000 +10,000 +0.02% 04 Oct 2021 02 Jan 2022 10-K 22 Nov 2023 2023 FY
Q3 2021 54,019,000 +178,000 +0.33% 28 Jun 2021 03 Oct 2021 10-K 25 Nov 2022 2022 FY
Q2 2021 54,117,000 +132,000 +0.24% 29 Mar 2021 27 Jun 2021 10-K 25 Nov 2022 2022 FY
Q1 2021 54,187,000 -512,000 -0.94% 28 Dec 2020 28 Mar 2021 10-K 25 Nov 2022 2022 FY
Q4 2020 53,927,000 -633,000 -1.2% 28 Sep 2020 27 Dec 2020 10-K 25 Nov 2022 2022 FY
Q3 2020 53,841,000 -776,000 -1.4% 29 Jun 2020 27 Sep 2020 10-K 24 Nov 2021 2021 FY
Q2 2020 53,985,000 -834,000 -1.5% 30 Mar 2020 28 Jun 2020 10-K 24 Nov 2021 2021 FY
Q1 2020 54,699,000 -444,000 -0.8% 30 Dec 2019 29 Mar 2020 10-K 24 Nov 2021 2021 FY
Q4 2019 54,560,000 -830,000 -1.5% 30 Sep 2019 29 Dec 2019 10-K 24 Nov 2021 2021 FY
Q3 2019 54,617,000 -724,000 -1.3% 01 Jul 2019 29 Sep 2019 10-K 23 Nov 2020 2020 FY
Q2 2019 54,819,000 -718,000 -1.3% 01 Apr 2019 30 Jun 2019 10-K 23 Nov 2020 2020 FY
Q1 2019 55,143,000 -698,000 -1.2% 31 Dec 2018 31 Mar 2019 10-K 23 Nov 2020 2020 FY
Q4 2018 55,390,000 -465,000 -0.83% 01 Oct 2018 30 Dec 2018 10-K 23 Nov 2020 2020 FY
Q3 2018 55,341,000 -997,000 -1.8% 02 Jul 2018 30 Sep 2018 10-K 29 Nov 2019 2019 FY
Q2 2018 55,537,000 -1,647,000 -2.9% 02 Apr 2018 01 Jul 2018 10-K 29 Nov 2019 2019 FY
Q1 2018 55,841,000 -1,429,000 -2.5% 01 Jan 2018 01 Apr 2018 10-K 29 Nov 2019 2019 FY
Q4 2017 55,855,000 -1,244,000 -2.2% 02 Oct 2017 31 Dec 2017 10-K 29 Nov 2019 2019 FY
Q3 2017 56,338,000 -971,000 -1.7% 03 Jul 2017 01 Oct 2017 10-K 16 Nov 2018 2018 FY
Q2 2017 57,184,000 -612,000 -1.1% 03 Apr 2017 02 Jul 2017 10-K 16 Nov 2018 2018 FY
Q1 2017 57,270,000 -1,181,000 -2% 02 Jan 2017 02 Apr 2017 10-K 16 Nov 2018 2018 FY
Q4 2016 57,099,000 -1,959,000 -3.3% 03 Oct 2016 01 Jan 2017 10-K 16 Nov 2018 2018 FY
Q3 2016 57,309,000 -2,654,000 -4.4% 27 Jun 2016 02 Oct 2016 10-K 20 Nov 2017 2017 FY
Q2 2016 57,796,000 -2,411,000 -4% 28 Mar 2016 26 Jun 2016 10-K 20 Nov 2017 2017 FY
Q1 2016 58,451,000 -2,702,000 -4.4% 28 Dec 2015 27 Mar 2016 10-K 20 Nov 2017 2017 FY
Q4 2015 59,058,000 -3,394,000 -5.4% 28 Sep 2015 27 Dec 2015 10-K 20 Nov 2017 2017 FY
Q3 2015 59,963,000 -3,639,000 -5.7% 29 Jun 2015 27 Sep 2015 10-K 22 Nov 2016 2016 FY
Q2 2015 60,207,000 -4,359,000 -6.8% 30 Mar 2015 28 Jun 2015 10-K 22 Nov 2016 2016 FY
Q1 2015 61,153,000 -3,682,000 -5.7% 29 Dec 2014 29 Mar 2015 10-K 22 Nov 2016 2016 FY
Q4 2014 62,452,000 -1,775,000 -2.8% 29 Sep 2014 28 Dec 2014 10-K 22 Nov 2016 2016 FY
Q3 2014 63,602,000 -670,000 -1% 30 Jun 2014 28 Sep 2014 10-K 20 Nov 2015 2015 FY
Q2 2014 64,566,000 -266,000 -0.41% 31 Mar 2014 29 Jun 2014 10-K 20 Nov 2015 2015 FY
Q1 2014 64,835,000 +284,000 +0.44% 30 Dec 2013 30 Mar 2014 10-K 20 Nov 2015 2015 FY
Q4 2013 64,227,000 +363,000 +0.57% 30 Sep 2013 29 Dec 2013 10-K 20 Nov 2015 2015 FY
Q3 2013 64,272,000 +649,000 +1% 01 Jul 2013 29 Sep 2013 10-K 19 Nov 2014 2014 FY
Q2 2013 64,832,000 +1,445,000 +2.3% 01 Apr 2013 30 Jun 2013 10-K 19 Nov 2014 2014 FY
Q1 2013 64,551,000 +1,479,000 +2.3% 31 Dec 2012 31 Mar 2013 10-K 19 Nov 2014 2014 FY
Q4 2012 63,864,000 +1,431,000 +2.3% 01 Oct 2012 30 Dec 2012 10-K 19 Nov 2014 2014 FY
Q3 2012 63,623,000 +1,313,000 +2.1% 02 Jul 2012 30 Sep 2012 10-K 20 Nov 2013 2013 FY
Q2 2012 63,387,000 +1,184,000 +1.9% 02 Apr 2012 01 Jul 2012 10-K 20 Nov 2013 2013 FY
Q1 2012 63,072,000 +951,000 +1.5% 02 Jan 2012 01 Apr 2012 10-K 20 Nov 2013 2013 FY
Q4 2011 62,433,000 +768,000 +1.2% 03 Oct 2011 01 Jan 2012 10-K 20 Nov 2013 2013 FY
Q3 2011 62,310,000 +730,000 +1.2% 04 Jul 2011 02 Oct 2011 10-K 15 Nov 2012 2012 FY
Q2 2011 62,203,000 +643,000 +1% 04 Apr 2011 03 Jul 2011 10-K 15 Nov 2012 2012 FY
Q1 2011 62,121,000 +610,000 +0.99% 03 Jan 2011 03 Apr 2011 10-K 15 Nov 2012 2012 FY
Q4 2010 61,665,000 04 Oct 2010 02 Jan 2011 10-K 15 Nov 2012 2012 FY
Q3 2010 61,580,000 28 Jun 2010 03 Oct 2010 10-K 17 Nov 2011 2011 FY
Q2 2010 61,560,000 29 Mar 2010 27 Jun 2010 10-K 17 Nov 2011 2011 FY
Q1 2010 61,511,000 28 Dec 2009 28 Mar 2010 10-K 17 Nov 2011 2011 FY

TETRA TECH INC Annual Weighted Average Number of Shares Outstanding, Basic (shares)

Period Value YoY Chg Change % Start Date End Date Report Filed Fiscal Year Fiscal Period
2025 264,713,000 -2,651,000 -0.99% 30 Sep 2024 28 Sep 2025 10-K 20 Nov 2025 2025 FY
2024 267,364,000 +1,349,000 +0.51% 02 Oct 2023 29 Sep 2024 10-K 20 Nov 2025 2025 FY
2023 266,015,000 -2,085,000 -0.78% 03 Oct 2022 01 Oct 2023 10-K 20 Nov 2025 2025 FY
2022 268,100,000 +214,022,000 +396% 04 Oct 2021 02 Oct 2022 10-K 19 Nov 2024 2024 FY
2021 54,078,000 -157,000 -0.29% 28 Sep 2020 03 Oct 2021 10-K 22 Nov 2023 2023 FY
2020 54,235,000 -751,000 -1.4% 30 Sep 2019 27 Sep 2020 10-K 25 Nov 2022 2022 FY
2019 54,986,000 -684,000 -1.2% 01 Oct 2018 29 Sep 2019 10-K 24 Nov 2021 2021 FY
2018 55,670,000 -1,241,000 -2.2% 02 Oct 2017 30 Sep 2018 10-K 23 Nov 2020 2020 FY
2017 56,911,000 -1,275,000 -2.2% 03 Oct 2016 01 Oct 2017 10-K 29 Nov 2019 2019 FY
2016 58,186,000 -2,727,000 -4.5% 28 Sep 2015 02 Oct 2016 10-K 16 Nov 2018 2018 FY
2015 60,913,000 -3,466,000 -5.4% 29 Sep 2014 27 Sep 2015 10-K 20 Nov 2017 2017 FY
2014 64,379,000 -165,000 -0.26% 30 Sep 2013 28 Sep 2014 10-K 22 Nov 2016 2016 FY
2013 64,544,000 +1,327,000 +2.1% 01 Oct 2012 29 Sep 2013 10-K 20 Nov 2015 2015 FY
2012 63,217,000 +1,164,000 +1.9% 03 Oct 2011 30 Sep 2012 10-K 19 Nov 2014 2014 FY
2011 62,053,000 +623,000 +1% 04 Oct 2010 02 Oct 2011 10-K 20 Nov 2013 2013 FY
2010 61,430,000 28 Sep 2009 03 Oct 2010 10-K 15 Nov 2012 2012 FY
* An asterisk sign (*) next to the value indicates that the value is likely invalid.