Insider at

04

Insider transactions

05
0 buys (P) 1 sells (S) Net: $-431,400 + 86 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

86 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Aug. 6, 2024 TTEK S 17,924 $227.72 $4,081,653 24,877 Direct -41.88% Disposed -27.3% (price as of 2026-10-02)
Nov. 28, 2023 TTEK S 22,000 $161.51 $3,553,220 48,566 Direct -31.18% Disposed 2.5% (price as of 2026-10-02)
Dec. 15, 2022 TTEK S 30,000 $153.63 $4,608,900 48,487 Direct -38.22% Disposed 7.8% (price as of 2026-10-02)
Dec. 10, 2021 TTEK S 9,670 $171.50 $1,658,405 48,095 Direct -16.74% Disposed -3.4% (price as of 2026-10-02)
Dec. 9, 2021 TTEK S 4,817 $181.18 $872,744 170,095 Direct -2.75% Disposed -8.6% (price as of 2026-10-02)
Dec. 6, 2021 TTEK S 64,000 $185.75 $11,888,000 170,095 Direct -27.34% Disposed -10.8% (price as of 2026-10-02)
Dec. 7, 2020 TTEK S 8,798 $119.73 $1,053,385 204,725 Direct -4.12% Disposed 38.3% (price as of 2026-10-02)
Dec. 4, 2020 TTEK S 41,202 $121.83 $5,019,640 213,523 Direct -16.18% Disposed 35.9% (price as of 2026-10-02)
Nov. 18, 2020 TTEK S 59,112 $123.76 $7,315,701 222,407 Direct -21.00% Disposed 33.8% (price as of 2026-10-02)
Aug. 21, 2020 TTEK S 230 $93.16 $21,427 222,407 Direct -0.10% Disposed 77.8% (price as of 2026-10-02)
Aug. 21, 2020 TTEK S 69,040 $93.16 $6,431,766 222,637 Direct -23.67% Disposed 77.8% (price as of 2026-10-02)
Feb. 11, 2020 TTEK S 29,438 $96.07 $2,828,109 291,677 Direct -9.17% Disposed 72.4% (price as of 2026-10-02)
Feb. 10, 2020 TTEK S 17,512 $95.42 $1,670,995 291,677 Direct -5.66% Disposed 73.5% (price as of 2026-10-02)
Feb. 6, 2020 TTEK S 24,671 $92.42 $2,280,094 291,677 Direct -7.80% Disposed 79.2% (price as of 2026-10-02)

Showing latest 100 of 373 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Nov. 30, 2025 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (19,330) · · 19,330 Disposed
Nov. 30, 2025 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (21,255) · · 21,255 Disposed
Nov. 19, 2025 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (101,010) · · 101,010 Acquired
Nov. 18, 2025 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (19,015) · · 19,015 Disposed
Nov. 18, 2025 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (14,030) · · 14,030 Disposed
Nov. 30, 2024 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (21,255) · · 21,255 Disposed
Nov. 20, 2024 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (77,320) · · 77,320 Acquired
Nov. 18, 2024 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) [F3] COMMON STOCK $0.00 · 19,015 Disposed
Nov. 18, 2024 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) [F3] COMMON STOCK $0.00 · 14,030 Disposed
Nov. 18, 2024 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) [F3] COMMON STOCK $0.00 · 16,390 Disposed
Nov. 21, 2023 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) [F3] COMMON STOCK (17,003) $0.00 · 17,003 Acquired
Nov. 18, 2023 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (3,803) $0.00 · 3,803 Disposed
Nov. 18, 2023 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (2,806) $0.00 · 2,806 Disposed
Nov. 18, 2023 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (3,279) $0.00 · 3,279 Disposed
Nov. 18, 2023 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (4,276) $0.00 · 4,276 Disposed
Nov. 18, 2022 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (2,807) $0.00 · 2,807 Disposed
Nov. 18, 2022 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (3,279) $0.00 · 3,279 Disposed
Nov. 18, 2022 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (4,276) $0.00 · 4,276 Disposed
Nov. 18, 2022 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (5,308) $0.00 · 5,308 Disposed
Nov. 16, 2022 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (15,211) $0.00 · 15,211 Acquired
Dec. 10, 2021 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (9,670) $47.95 Nov. 17, 2027 9,670 Disposed
Dec. 9, 2021 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (4,817) $47.95 Nov. 17, 2027 4,817 Disposed
Nov. 23, 2021 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (11,225) $0.00 Nov. 18, 2025 11,225 Acquired
Nov. 18, 2021 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (5,308) $0.00 Nov. 18, 2022 5,308 Disposed
Nov. 18, 2021 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (4,276) $0.00 Nov. 21, 2023 4,276 Disposed
Nov. 18, 2021 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (3,279) $0.00 Nov. 19, 2024 3,279 Disposed
Nov. 19, 2020 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (13,115) $0.00 Nov. 19, 2024 13,115 Acquired
Nov. 18, 2020 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (4,277) $0.00 Nov. 21, 2023 4,277 Disposed
Nov. 18, 2020 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (5,308) $0.00 Nov. 18, 2022 5,308 Disposed
Nov. 18, 2020 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (15,649) $40.80 Nov. 18, 2026 15,649 Disposed
Nov. 18, 2020 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (43,463) $47.95 Nov. 17, 2027 43,463 Disposed
Feb. 11, 2020 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (29,438) $40.80 Nov. 18, 2026 29,438 Disposed
Feb. 10, 2020 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (17,512) $40.80 Nov. 18, 2026 17,512 Disposed
Feb. 6, 2020 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (24,671) $27.16 Nov. 20, 2025 24,671 Disposed
Nov. 21, 2019 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (17,105) · Nov. 18, 2023 17,105 Acquired
Nov. 18, 2019 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (5,308) · Nov. 18, 2022 5,308 Disposed
Sept. 5, 2019 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (30,453) $27.16 Nov. 20, 2025 30,453 Disposed
Sept. 4, 2019 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (43,560) $27.16 Nov. 20, 2025 43,560 Disposed
June 6, 2019 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (95,109) $27.26 Nov. 21, 2022 95,109 Disposed
Nov. 15, 2018 TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) COMMON STOCK (21,232) · Nov. 18, 2022 21,232 Acquired
Nov. 15, 2018 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (14,869) $28.58 Nov. 22, 2021 14,869 Disposed
Nov. 14, 2018 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (30,000) $28.58 Nov. 22, 2021 30,000 Disposed
March 14, 2018 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (8,496) $24.26 Nov. 16, 2020 8,496 Disposed
March 13, 2018 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (59,774) $24.26 Nov. 16, 2020 59,774 Disposed
Dec. 14, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (159) $24.26 Nov. 16, 2020 159 Disposed
Dec. 13, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (10,874) $24.26 Nov. 16, 2020 10,874 Disposed
Dec. 11, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (19,100) $28.58 Nov. 22, 2021 19,100 Disposed
Dec. 8, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (43,317) $28.58 Nov. 22, 2021 43,317 Disposed
Dec. 7, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (8,968) $28.58 Nov. 22, 2021 8,968 Disposed
Dec. 7, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (12,341) $24.26 Nov. 16, 2020 12,341 Disposed
Dec. 6, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (10,856) $24.26 Nov. 16, 2020 10,856 Disposed
Nov. 17, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (57,950) $47.95 Nov. 17, 2027 57,950 Acquired
May 4, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (150,000) $22.53 Nov. 11, 2019 150,000 Disposed
May 2, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (98,883) $23.48 Nov. 12, 2018 98,883 Disposed
May 1, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (1,117) $23.48 Nov. 12, 2018 1,117 Disposed
Jan. 25, 2017 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (70,000) $25.55 Nov. 13, 2017 70,000 Disposed
Nov. 18, 2016 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (62,599) $40.80 Nov. 18, 2026 62,599 Acquired
Nov. 16, 2016 TTEK RESTRICTED STOCK UNITS COMMON STOCK (4,625) $0.00 Nov. 16, 2016 4,625 Disposed
June 10, 2016 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (6,761) $16.98 Nov. 14, 2016 6,761 Disposed
June 9, 2016 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (43,239) $16.98 Nov. 14, 2016 43,239 Disposed
Nov. 20, 2015 TTEK STOCK OPTION (RIGHT TO BUY) COMMON STOCK (98,684) $27.16 Nov. 20, 2025 98,684 Acquired
Nov. 16, 2015 TTEK RESTRICTED STOCK UNITS COMMON STOCK (4,625) $0.00 Nov. 16, 2016 4,625 Disposed
July 13, 2015 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (30,000) $23.68 Nov. 16, 2015 30,000 Disposed
Nov. 21, 2014 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (95,109) $27.26 Nov. 21, 2022 95,109 Acquired
Nov. 16, 2014 TTEK RESTRICTED STOCK UNITS COMMON STOCK (4,625) $0.00 Nov. 16, 2016 4,625 Disposed
Aug. 19, 2014 TTEK STOCK OPTION COMMON STOCK (15,413) $15.79 Jan. 18, 2015 15,413 Disposed
Aug. 19, 2014 TTEK STOCK OPTION COMMON STOCK (40,000) $17.71 Dec. 5, 2014 40,000 Disposed
Nov. 22, 2013 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (116,254) $28.58 Nov. 22, 2021 116,254 Acquired
Nov. 18, 2013 TTEK COMMON STOCK COMMON STOCK (15,000) $24.56 Jan. 20, 2014 15,000 Disposed
Nov. 18, 2013 TTEK STOCK OPTION COMMON STOCK (30,000) $18.07 March 6, 2014 30,000 Disposed
Nov. 16, 2013 TTEK RESTRICTED STOCK UNITS COMMON STOCK (4,625) $0.00 Nov. 16, 2016 4,625 Disposed
Nov. 19, 2012 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (610) $11.80 Jan. 20, 2013 610 Disposed
Nov. 19, 2012 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (1,640) $11.80 Jan. 20, 2013 1,640 Disposed
Nov. 16, 2012 TTEK RESTRICTED STOCK UNITS COMMON STOCK (18,500) · Nov. 16, 2016 18,500 Acquired
Nov. 16, 2012 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (102,500) $24.26 Nov. 16, 2020 102,500 Acquired
Nov. 16, 2011 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (3,534) $19.55 Jan. 15, 2012 3,534 Disposed
Nov. 16, 2011 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (1,666) $19.55 Jan. 15, 2012 1,666 Disposed
Nov. 11, 2011 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (150,000) $22.53 Nov. 11, 2019 150,000 Acquired
Dec. 13, 2010 TTEK STOCK OPTION COMMON STOCK (48) $21.80 Jan. 16, 2011 48 Disposed
Nov. 12, 2010 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (100,000) $23.48 Nov. 12, 2018 100,000 Acquired
Nov. 13, 2009 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (70,000) $25.55 Nov. 13, 2017 70,000 Acquired
Aug. 4, 2009 TTEK STOCK OPTION COMMON STOCK (9,554) $15.79 Jan. 18, 2015 9,554 Disposed
Aug. 3, 2009 TTEK STOCK OPTION COMMON STOCK (20,033) $15.79 Jan. 18, 2015 20,033 Disposed
Aug. 3, 2009 TTEK STOCK OPTION COMMON STOCK (45,000) $18.07 March 6, 2014 45,000 Disposed
Aug. 3, 2009 TTEK STOCK OPTION COMMON STOCK (11,202) $21.80 Jan. 16, 2011 11,202 Disposed
Aug. 3, 2009 TTEK STOCK OPTION COMMON STOCK (10,000) $23.68 Nov. 16, 2015 10,000 Disposed
Nov. 14, 2008 TTEK EMPLOYEE STOCK OPTION (RIGHT TO BUY) COMMON STOCK (50,000) $16.98 Nov. 14, 2016 50,000 Acquired
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (3,100) $12.84 Dec. 23, 2012 3,100 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (1,000) $12.84 Dec. 23, 2012 1,000 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (100) $12.84 Dec. 23, 2012 100 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (100) $12.84 Dec. 23, 2012 100 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (300) $12.84 Dec. 23, 2012 300 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (100) $12.84 Dec. 23, 2012 100 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (8,396) $12.84 Dec. 23, 2012 8,396 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (489) $12.84 Dec. 23, 2012 489 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (1,900) $12.84 Dec. 23, 2012 1,900 Disposed
May 29, 2008 TTEK STOCK OPTION COMMON STOCK (500) $12.84 Dec. 23, 2012 500 Disposed
May 28, 2008 TTEK STOCK OPTION COMMON STOCK (273) $12.84 Dec. 23, 2012 273 Disposed
May 28, 2008 TTEK STOCK OPTION COMMON STOCK (800) $12.84 Dec. 23, 2012 800 Disposed
May 28, 2008 TTEK STOCK OPTION COMMON STOCK (300) $12.84 Dec. 23, 2012 300 Disposed

Showing latest 100 of 112 transactions

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Compensation (DEF 14A)

08

Matched by name from proxy statements (DEF 14A) — verify against the filing.

TTEK

CEO
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2021 $1,090,385 · $4,601,813 · $2,154,900 · $61,237 $7,908,335
2020 $1,037,500 · $3,997,704 · $1,307,250 · $59,427 $6,401,881
2019 · · $3,964,546 · $1,509,631 · $47,647 $6,499,036

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.