Insider Transactions Reported by 26 Insiders of TETRA TECH INC

Symbol
TTEK on Nasdaq
Location
Pasadena, CA

Insiders trading volume in the past year

TETRA TECH INC executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Dan L. Batrack Chairman and CEO, Director $14,197,658 19 Nov 2025
William R. Brownlie SVP, Chief Engineer $14,143,678 02 Oct 2022
Leslie L. Shoemaker EVP, Chief Sustainability $11,696,970 19 Nov 2025
J. Christopher Lewis Director $9,582,943 14 Dec 2022
Craig L. Christensen Svp, Cio $6,031,748 02 Oct 2022
Richard A. Lemmon SVP, Corporate Administration $5,930,744 02 Oct 2022
Steven M. Burdick Evp, Cfo $5,090,642 06 Feb 2026
Kimberly E. Ritrievi Director $4,946,082 12 Jan 2026
Joanne M. Maguire Director $4,563,437 30 Sep 2024
Preston Hopson EVP, Chief Legal/Human Capital $3,228,527 19 Nov 2025
Bernard Teufele SVP, Canada and South America $2,136,148 02 Oct 2022
Brian N. Carter SVP, Corporate Controller $2,059,172 -$401,405 -16% 04 Feb 2026
Derek G. Amidon SVP, Comm./Int'l Svcs. Group $2,054,737 01 Oct 2023
J. Kenneth Thompson Director $2,017,188 14 Feb 2024
Gary Birkenbeuel Director $1,780,711 -$86,050 -4.6% 19 Nov 2025
Roger R. Argus President and CEO $1,715,381 19 Feb 2026
Jill Hudkins President $989,632 27 Nov 2023
Kirsten M. Volpi Director $759,700 10 Feb 2026
Prashant Gandhi Director $537,144 19 Nov 2025
Patrick C. Haden Director $507,006 17 Mar 2022
Mark A. Rynning SVP, R&S Infrastructure $395,793 18 Nov 2021
Christiana Obiaya Director $369,434 19 Feb 2026
Brendan M. O'Rourke SVP, Enterprise Risk Mgmt. $167,535 16 Nov 2022
John M. Douglas Director $17,025 27 Feb 2025
M. Susan Hardwick Director 26 Jan 2026
Jeffrey R. Feeler Director 26 Jan 2026

Recent Insider Transactions by Companies or Individuals for TETRA TECH INC

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Christiana Obiaya TTEK COMMON STOCK Options Exercise 5.4% 495 9,666 19 Feb 2026 Direct
Christiana Obiaya TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -100% -495 0 19 Feb 2026 Direct
Roger R. Argus TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 28,174 28,174 19 Feb 2026 Direct
Kirsten M. Volpi TTEK COMMON STOCK Options Exercise 1.44% 1,000 70,218 10 Feb 2026 Direct
Kirsten M. Volpi TTEK STOCK OPTION (RIGHT TO BUY) Options Exercise -11.1% -1,000 8,000 10 Feb 2026 Direct
Steven M. Burdick TTEK COMMON STOCK Gift -7.43% -11,100 138,251 06 Feb 2026 Direct
Brian N. Carter TTEK COMMON STOCK Sale -17.7% $401,405 $40.22 -9,979 46,496 04 Feb 2026 Direct
M. Susan Hardwick TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 1,754 1,754 26 Jan 2026 Direct
Jeffrey R. Feeler TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 1,754 1,754 26 Jan 2026 Direct
Gary Birkenbeuel TTEK COMMON STOCK Award 9.43% 4,397 51,032 12 Jan 2026 Direct
Gary Birkenbeuel TTEK COMMON STOCK Options Exercise 3.53% 1,590 46,635 12 Jan 2026 Direct
Gary Birkenbeuel TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -100% -1,590 0 12 Jan 2026 Direct
Kimberly E. Ritrievi TTEK COMMON STOCK Award 1.54% 2,208 145,408 12 Jan 2026 Direct
Kirsten M. Volpi TTEK COMMON STOCK Options Exercise 2.58% 1,718 68,218 30 Nov 2025 Direct
Kirsten M. Volpi TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -100% -1,718 0 30 Nov 2025 Direct
Leslie L. Shoemaker TTEK COMMON STOCK Tax liability -1.12% -3,707 325,821 30 Nov 2025 Direct
Leslie L. Shoemaker TTEK COMMON STOCK Options Exercise 2.08% 6,717 329,528 30 Nov 2025 Direct
Leslie L. Shoemaker TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -52.5% -6,717 6,070 30 Nov 2025 Direct
Christiana Obiaya TTEK COMMON STOCK Options Exercise 23% 1,718 9,171 30 Nov 2025 Direct
Christiana Obiaya TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -100% -1,718 0 30 Nov 2025 Direct
Preston Hopson TTEK COMMON STOCK Tax liability -2.4% -2,044 83,142 30 Nov 2025 Direct
Preston Hopson TTEK COMMON STOCK Options Exercise 6.49% 5,190 85,186 30 Nov 2025 Direct
Preston Hopson TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -48.7% -5,190 5,460 30 Nov 2025 Direct
Prashant Gandhi TTEK COMMON STOCK Options Exercise 11.6% 1,718 16,553 30 Nov 2025 Direct
Prashant Gandhi TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -100% -1,718 0 30 Nov 2025 Direct
Brian N. Carter TTEK COMMON STOCK Tax liability -2.59% -1,500 56,475 30 Nov 2025 Direct
Brian N. Carter TTEK COMMON STOCK Options Exercise 4.98% 2,748 57,975 30 Nov 2025 Direct
Brian N. Carter TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -47.6% -2,748 3,030 30 Nov 2025 Direct
Steven M. Burdick TTEK COMMON STOCK Tax liability -2.64% -4,044 149,219 30 Nov 2025 Direct
Steven M. Burdick TTEK COMMON STOCK Options Exercise 5.02% 7,327 153,263 30 Nov 2025 Direct
Steven M. Burdick TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -50.1% -7,327 7,285 30 Nov 2025 Direct
Roger R. Argus TTEK COMMON STOCK Tax liability -6.7% -2,865 39,890 30 Nov 2025 Direct
Roger R. Argus TTEK COMMON STOCK Options Exercise 13.8% 5,190 42,755 30 Nov 2025 Direct
Roger R. Argus TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -48.7% -5,190 5,460 30 Nov 2025 Direct
Dan L. Batrack TTEK COMMON STOCK Tax liability -6.31% -22,396 332,498 30 Nov 2025 Direct
Dan L. Batrack TTEK COMMON STOCK Options Exercise 12.9% 40,585 354,894 30 Nov 2025 Direct
Dan L. Batrack TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise -48.8% -40,585 42,505 30 Nov 2025 Direct
Kirsten M. Volpi TTEK COMMON STOCK Options Exercise 1.47% 1,000 69,218 28 Nov 2025 Direct
Kirsten M. Volpi TTEK STOCK OPTION (RIGHT TO BUY) Options Exercise -10% -1,000 9,000 28 Nov 2025 Direct
Kimberly E. Ritrievi TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 1,964 1,964 19 Nov 2025 Direct
Kirsten M. Volpi TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 1,964 1,964 19 Nov 2025 Direct
Leslie L. Shoemaker TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 19,641 19,641 19 Nov 2025 Direct
Christiana Obiaya TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 1,964 1,964 19 Nov 2025 Direct
Preston Hopson TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 14,029 14,029 19 Nov 2025 Direct
Prashant Gandhi TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 1,964 1,964 19 Nov 2025 Direct
Brian N. Carter TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 5,612 5,612 19 Nov 2025 Direct
Steven M. Burdick TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 19,641 19,641 19 Nov 2025 Direct
Gary Birkenbeuel TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 1,964 1,964 19 Nov 2025 Direct
Roger R. Argus TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 19,641 19,641 19 Nov 2025 Direct
Dan L. Batrack TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Award 101,010 101,010 19 Nov 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.