Employee Count History - Tetra Tech, Inc.

Historical employee count data from SEC filings.

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Workforce Trend Analysis

Workforce as of Sep 29, 2024

30,000

Total Change

+1479.78%

Annual Growth Rate

+10.35%

Key Insight

Tetra Tech, Inc. has been growing its workforce by 1479.8% over the analyzed period.

Business Implications

The company is showing healthy growth at 10.4% annually, which typically aligns with business expansion. Recent trend shows a deceleration in workforce changes compared to the historical pattern.

Employee Count History

SEC Filing History

Filing Date	Period	Employee Count	Form Type	YoY Change
Nov 19, 2024	Sep 29, 2024	30,000	10-K	+11.11%
Nov 22, 2023	Oct 1, 2023	27,000	10-K	+28.57%
Nov 25, 2022	Oct 2, 2022	21,000	10-K	0.00%
Nov 24, 2021	Oct 3, 2021	21,000	10-K	+5.00%
Nov 23, 2020	Sep 27, 2020	20,000	10-K	0.00%
Nov 29, 2019	Sep 29, 2019	20,000	10-K	+17.65%
Nov 16, 2018	Sep 30, 2018	17,000	10-K	+6.25%
Nov 20, 2017	Oct 1, 2017	16,000	10-K	0.00%
Nov 22, 2016	Oct 2, 2016	16,000	10-K	+23.08%
Nov 20, 2015	Sep 27, 2015	13,000	10-K	-7.14%
Nov 19, 2014	Sep 28, 2014	14,000	10-K	0.00%
Nov 20, 2013	Sep 29, 2013	14,000	10-K	+7.69%
Nov 15, 2012	Sep 30, 2012	13,000	10-K	0.00%
Nov 17, 2011	Oct 2, 2011	13,000	10-K	+8.33%
Nov 16, 2010	Oct 3, 2010	12,000	10-K	+20.00%
Nov 16, 2009	Sep 27, 2009	10,000	10-K	+8.70%
Nov 19, 2008	Sep 28, 2008	9,200	10-K	+17.95%
Nov 27, 2007	Sep 30, 2007	7,800	10-K	+6.85%
Dec 28, 2006	Oct 1, 2006	7,300	10-K	-5.19%
Dec 16, 2005	Oct 2, 2005	7,700	10-K	-10.47%
Jan 3, 2005	Oct 3, 2004	8,600	10-K	-3.37%
Dec 16, 2003	Sep 28, 2003	8,900	10-K	+18.79%
Dec 30, 2002	Sep 29, 2002	7,492	10-K	+1.24%
Dec 31, 2001	Sep 30, 2001	7,400	10-K	+13.85%
Dec 29, 2000	Oct 1, 2000	6,500	10-K	+19.42%
Dec 30, 1999	Oct 3, 1999	5,443	10-K	+48.63%
Dec 31, 1998	Oct 4, 1998	3,662	10-K	-79.66%
Dec 29, 1997	Sep 28, 1997	18,000	10-K	+847.87%
Dec 30, 1996	Sep 29, 1996	1,899	10-K