Velarion · Company Intelligence
Compensation Brief
Fiscal year 2025 · Filings through 2026-09-04

Tetra Tech (TTEK)

CEO Dan L. Batrack was paid $11,622,399 in fiscal year 2025, ↓ down 7.5% from fiscal year 2024, the 62nd percentile of its disclosed peer group (SEC filing 0001104659-26-002458 ↗): executive and director compensation, incentive-plan design, equity activity, and governance — every figure in this brief is traceable to its exact location in the company’s SEC filing — the document, the section, the page, and the table, linked directly.

$11,622,399 ↓
Dan L. Batrack total, FY2025
62nd
CEO pay percentile vs peers
133:1
CEO-to-median pay ratio
92.23%
Say-on-pay support, latest vote

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Sample answer — “What is the CEO’s total compensation?”
- Dan L. Batrack (Chairman, CEO and President), FY2025 total compensation $11,622,399 (base salary $1,245,673) [exec_comp, SEC accession 0001104659-26-002458, filed 2026-01-09]

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TTEK's next annual pay disclosure, estimated January 9, 2027.est. Filing ↗

01

Summary Compensation Table — fiscal year 2025

Named executive officerSalaryBonusStock awardsOption awardsNon-equity incentivePension / NQDCAll otherTotal
Dan L. Batrack$1,245,673$0$7,798,841$0$2,506,500$0$71,385$11,622,399
Chairman, CEO and President
Steven M. Burdick695,67350,0001,485,4990935,760054,6453,221,577
EVP, CFO
Leslie L. Shoemaker682,69250,0001,485,4990935,760046,9863,200,938
EVP, Chief Innovation and Sustainability Officer
Preston Hopson591,34650,000990,3330721,872048,9272,402,478
EVP, Chief Legal and Human Capital Officer, and Secretary
Roger R. Argus592,30850,000990,3330694,656048,9762,376,272
EVP, Corporate Development and President, Commercial/International Group (CIG)

A dash means the company reported no figure in that column; 0 means it reported zero. Figures are as printed in the filing, without adjustment.

Three-year trend — total compensation per named executive

Named executive officerFY2025 totalFY2024 totalFY2023 totalΔ FY2024→2025
Dan L. Batrack$11,622,399—$11,885,517—
Steven M. Burdick3,221,577—3,058,433—
Leslie L. Shoemaker3,200,938—2,767,740—
Preston Hopson2,402,4782,452,5932,365,948↓ −50,115
Roger R. Argus2,376,272—2,190,541—

Prior-year totals as disclosed in the corresponding proxy; deltas are computed values with the derivation shown in the register.

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Companies that benchmark against TTEK
19 companies name TTEK as a compensation peer

Each company listed discloses TTEK in its own benchmarking peer group, as disclosed in each company's most recent proxy statement within the last two proxy seasons. Two companies are therefore absent by design: one that named TTEK in an earlier year and no longer does, and one whose own most recent disclosure is older than the last two seasons.

01c

Board of directors

One page per director: the seat, the committees and the fee table, read for one person at a time.

DirectorRoleFY2025 total
Christiana ObiayaFormer director (through FY2025)$288,286
Gary R. BirkenbeuelIndependent Director$303,286
Jeffrey R. FeelerIndependent Director—
Kimberly E. RitrieviFormer director (through FY2025)$293,286
Kirsten M. VolpiIndependent Director$341,286
M. Susan HardwickIndependent Director—
Prashant GandhiIndependent Director$298,286
02

Equity transactions since the proxy statement was filed

Every insider equity transaction reported on Form 4 after the 2025 proxy statement — acquisitions, dispositions, exercises, and withholdings — and therefore not reflected in any table in that document.

InsiderRoleTransaction dateCodeSharesPriceValueSecuritySource
Gary R. BirkenbeuelDirector2026-01-12A4,397$0$0Deferred share awardForm 4 ↗
Gary R. BirkenbeuelDirector2026-01-12A1,59000CommonForm 4 ↗
Dividend-equivalent accruals2026-01-12—1,590——1 insider, 1 accrual row
Kimberly E. RitrieviDirector2026-01-12A2,20800Deferred share awardForm 4 ↗
Dividend-equivalent accruals2026-01-26—3,508——2 insiders, 2 accrual rows
Brian N. CarterSVP, Corporate Controller2026-02-04D9,97940401,405CommonForm 4 ↗
Steven M. BurdickEVP, CFO2026-02-06D11,10000CommonForm 4 ↗
Dividend-equivalent accruals2026-02-10—1,000——1 insider, 1 accrual row
Kirsten M. VolpiDirector2026-02-10A1,000109,590CommonForm 4 ↗
Roger R. ArgusPresident and CEO2026-02-19A28,17400Derivative, Class A CommonForm 4 ↗
Christiana ObiayaDirector2026-02-19A49500CommonForm 4 ↗
Dividend-equivalent accruals2026-02-19—495——1 insider, 1 accrual row
Dividend-equivalent accruals2026-03-16—7,133——1 insider, 5 accrual rows
Kimberly E. RitrieviDirector2026-03-16A1,90000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A4,50000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D2,05000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D2,91000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A1,71800CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A2,12500CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A79500CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A79500CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A2,05000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A2,91000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A1,92500CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A2,25000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D2,12500Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D2,25000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D4,50000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A25,88300CommonForm 4 ↗
Dividend-equivalent accruals2026-04-27—1,259——1 insider, 1 accrual row
Jeffrey R. FeelerDirector2026-05-15A1,9002650,179CommonForm 4 ↗
Dividend-equivalent accruals2026-06-04—1,700——1 insider, 1 accrual row
Kirsten M. VolpiDirector2026-06-04A1,7001016,303CommonForm 4 ↗
Kirsten M. VolpiDirector2026-08-04D2,30000Derivative, Class A CommonForm 4 ↗
Kirsten M. VolpiDirector2026-08-04A2,3001022,057CommonForm 4 ↗

Transaction codes per Form 4: A acquisition · S open-market sale · F tax withholding · M option exercise · G gift. Value = shares × price as reported. Dividend-equivalent and fractional-share accrual rows (derivative Class A, under $10,000 and under 2,000 shares) are aggregated per date; every row appears in full below.

View all 40 transactions
InsiderRoleTransaction dateCodeSharesPriceValueSecuritySource
Gary R. BirkenbeuelDirector2026-01-12A4,397$0$0Deferred share awardForm 4 ↗
Gary R. BirkenbeuelDirector2026-01-12A1,59000CommonForm 4 ↗
Gary R. BirkenbeuelDirector2026-01-12D1,59000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-01-12A2,20800Deferred share awardForm 4 ↗
M. Susan HardwickDirector2026-01-26A1,75400Derivative, Class A CommonForm 4 ↗
Jeffrey R. FeelerDirector2026-01-26A1,75400Derivative, Class A CommonForm 4 ↗
Brian N. CarterSVP, Corporate Controller2026-02-04D9,97940401,405CommonForm 4 ↗
Steven M. BurdickEVP, CFO2026-02-06D11,10000CommonForm 4 ↗
Kirsten M. VolpiDirector2026-02-10D1,00000Derivative, Class A CommonForm 4 ↗
Kirsten M. VolpiDirector2026-02-10A1,000109,590CommonForm 4 ↗
Roger R. ArgusPresident and CEO2026-02-19A28,17400Derivative, Class A CommonForm 4 ↗
Christiana ObiayaDirector2026-02-19A49500CommonForm 4 ↗
Christiana ObiayaDirector2026-02-19D49500Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D1,71800Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A1,90000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A4,50000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D2,05000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D79500Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D79500Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D2,91000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D1,92500Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A1,71800CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A2,12500CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A79500CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A79500CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A2,05000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A2,91000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A1,92500CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A2,25000CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D2,12500Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D1,90000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D2,25000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16D4,50000Derivative, Class A CommonForm 4 ↗
Kimberly E. RitrieviDirector2026-03-16A25,88300CommonForm 4 ↗
Eric W. ThornburgDirector2026-04-27A1,25900Derivative, Class A CommonForm 4 ↗
Jeffrey R. FeelerDirector2026-05-15A1,9002650,179CommonForm 4 ↗
Kirsten M. VolpiDirector2026-06-04D1,70000Derivative, Class A CommonForm 4 ↗
Kirsten M. VolpiDirector2026-06-04A1,7001016,303CommonForm 4 ↗
Kirsten M. VolpiDirector2026-08-04D2,30000Derivative, Class A CommonForm 4 ↗
Kirsten M. VolpiDirector2026-08-04A2,3001022,057CommonForm 4 ↗
03

Grants of plan-based awards — fiscal year 2025

ExecutiveAwardGrant dateThresholdTargetGrantedMaximumGrant-date fair value
Roger R. ArgusPSU2024-11-20014,728—29,456$595,453
Roger R. ArgusRSU2024-11-20——9,818—394,879
Preston HopsonPSU2024-11-20014,728—29,456595,453
Leslie L. ShoemakerPSU2024-11-20022,091—44,182893,139
Steven M. BurdickPSU2024-11-20022,091—44,182893,139
Dan L. BatrackPSU2024-11-200115,979—231,9584,689,031
Leslie L. ShoemakerRSU2024-11-20——14,728—592,360
Steven M. BurdickRSU2024-11-20——14,728—592,360
Dan L. BatrackRSU2024-11-20——77,320—3,109,810
Preston HopsonRSU2024-11-20——9,818—394,879
03b

Vehicle mix — grant-date fair value by award type

Named executive officerTime-vested (RSU)Performance-vested (PSU)Options / SARs% performance-vested
Roger R. Argus$394,879$595,453$060.1%
Preston Hopson394,879595,453060.1%
Leslie L. Shoemaker592,360893,139060.1%
Steven M. Burdick592,360893,139060.1%
Dan L. Batrack3,109,8104,689,031060.1%

% performance-vested = PSU grant-date fair value ÷ (RSU + PSU + Options), a computed value with the derivation shown in the register.

04

Outstanding equity awards at fiscal year-end 2025

ExecutiveAwardShares unvestedExercise priceMarket value unvested
Steven M. BurdickRSU2,520—$83,992
Preston HopsonRSU25,138—837,850
Roger R. ArgusRSU16,395—546,445
Roger R. ArgusRSU25,138—837,850
Preston HopsonRSU5,070—168,983
Dan L. BatrackRSU77,320—2,577,076
Dan L. BatrackRSU38,025—1,267,373
Roger R. ArgusRSU14,728—490,884
Leslie L. ShoemakerRSU22,091—736,293
Steven M. BurdickRSU19,015—633,770
Leslie L. ShoemakerRSU18,215—607,106
Preston HopsonRSU15,210—506,949
Preston HopsonRSU16,395—546,445
Leslie L. ShoemakerRSU14,728—490,884
Preston HopsonRSU14,728—490,884
Preston HopsonRSU9,818—327,234
Preston HopsonRSU8,195—273,139
Roger R. ArgusRSU5,070—168,983
Leslie L. ShoemakerRSU6,335—211,146
Leslie L. ShoemakerRSU2,520—83,992
Preston HopsonRSU2,055—68,493
Roger R. ArgusRSU2,055—68,493
Dan L. BatrackRSU14,030—467,620
Dan L. BatrackPSU357,854—11,918,275
Dan L. BatrackRSU193,135—6,437,190
Steven M. BurdickPSU62,966—2,098,657
Leslie L. ShoemakerPSU59,321—1,977,169
Preston HopsonPSU46,333—1,544,279
Steven M. BurdickRSU34,513—1,150,318
Leslie L. ShoemakerRSU32,688—1,089,491
Steven M. BurdickRSU14,728—490,884
Dan L. BatrackRSU115,979—3,865,580
Dan L. BatrackRSU114,085—3,802,453
Roger R. ArgusRSU8,195—273,139
Roger R. ArgusRSU15,210—506,949
Roger R. ArgusRSU9,818—327,234
Dan L. BatrackRSU127,520—4,250,242
Dan L. BatrackRSU63,760—2,125,121
Steven M. BurdickRSU22,091—736,293
Steven M. BurdickRSU21,860—728,594
Leslie L. ShoemakerRSU19,015—633,770
Steven M. BurdickRSU10,930—364,297
Leslie L. ShoemakerRSU9,105—303,470
Steven M. BurdickRSU6,335—211,146
05

Incentive-plan design — the Compensation Discussion & Analysis

We believe in a pay for performance compensation program in which a majority of the compensation is tied to our success in meeting predetermined performance objectives and creating long-term stockholder value.

CEO STI target (% of salary)150%
CEO LTI target (% of salary)—
Independent consultantMeridian Compensation Partners
Clawback policytrue
Anti-hedgingtrue
Anti-pledgingTrue
06

Say-on-pay — recent advisory votes

Meeting yearMeeting dateForAgainstAbstainSupportOutcome
20262026-02-19199,849,46115,768,1601,063,10792.23%Passed
20252025-02-27205,943,99417,826,7061,121,68391.57%Passed
20242024-02-2941,317,4693,080,25848,55392.96%Passed
20232023-02-2841,745,0902,191,38859,66894.88%Passed
20222022-03-0143,201,7892,460,02461,73294.48%Passed
20212021-02-2444,183,3291,626,31768,68196.31%Passed

Rows are labeled by annual-meeting year, with the meeting date beside each; the vote held in a given year acts on the prior fiscal year's compensation.

Say-on-pay — history, company's computation

Meeting yearMeeting dateApproval — company's computation
20262026-02-1992.23%a
20252025-02-2791.57%b
20242024-02-2992.96%c

a. Approved under the standard stated in the filing — “Abstentions as to a particular item will have the same effect as a vote against that item.”.

b. Approved under the standard stated in the filing — “Abstentions as to a particular item will have the same effect as a vote against that item.”.

c. Approved under the standard stated in the filing — “Abstentions as to a particular item will have the same effect as a vote against that item.”.

Approval percentages are the company's own reported computations under its own stated standard, not recomputed by Velarion. Where a company does not state a standard, none is assumed.

07

CEO pay ratio

Ratio (CEO : median employee)133 : 1
CEO total compensation$13,901,508
Median employee compensation$104,777
08

Director compensation — fiscal year 2025

DirectorCash feesStock awardsOption awardsNon-equity incentiveAll otherTotal
Kirsten M. VolpiIndependent · Audit · Compensation (Chair)$168,000$173,286$0$0$0$341,286
Gary R. BirkenbeuelIndependent · Audit (Chair) · Nominating/Governance130,000173,286000303,286
Prashant GandhiIndependent · Nominating/Governance (Chair) · Compensation125,000173,286000298,286
Kimberly E. RitrieviIndependent · Audit · Compensation · Departed during FY120,000173,286000293,286
Christiana ObiayaIndependent · Compensation · Nominating/Governance · Departed during FY115,000173,286000288,286
M. Susan HardwickIndependent · Audit · Nominating/Governance · Newly elected000000
Dan L. BatrackEmployee director · Board Chair000—00
Jeffrey R. FeelerIndependent · Audit · Compensation · Newly elected000000
09

Board fee structure and ownership guideline

Annual cash retainer$110,000
Annual equity retainer$175,000
Per board meeting fee$2,000
Committee chair fees (audit / comp / nom-gov)20,000 / 18,000 / 15,000
Stock ownership guideline$550,000
09b

Total cost of the board

ComponentFY2025
Cash retainers and fees$658,000
Equity awards (grant-date value)$866,430
All other compensation$0
Total cost of the board$1,524,430

Computed as the sum of the director compensation table rows above; inputs and formula shown in the register.

10

Disclosed peer group — fiscal year 2025

The compensation peer group as the company disclosed it in its own proxy — the reference set behind the percentile above.

10a

Peer reciprocity

Of the companies Tetra Tech names as compensation peers, which name it back in their own disclosed peer groups. A peer set the market reciprocates reads differently from one selected in a single direction.

Reciprocity shown where the peer's own current proxy has been read — each mark is cited in the register to that peer's filing. A dash means the peer's current proxy was read and names no reciprocal group including Tetra Tech.

10b

Chief executive pay against the peer group

Most recent fiscal-year chief executive compensation at each disclosed peer, taken from that company's own proxy statement.

RankCompanyFYChief executiveSalaryStock awardsOption awardsNon-equity incentiveTotal
1CACI International Inc.2026John Mengucci$1,387,242$13,000,063$0$3,484,962$18,674,436
2AECOM2025Troy Rudd1,380,22912,074,38902,396,17815,973,622
3Leidos Holdings, Inc.2025Thomas Bell1,360,3858,257,1721,915,0313,148,26014,736,385
4Booz Allen Hamilton, Inc.2026Horacio Rozanski1,500,00010,248,07101,800,00013,800,777
5Verisk Analytics, Inc.2025Lee Shavel1,000,0008,800,0862,199,8811,500,00013,540,847
6Tetra Tech2025Dan L. Batrack1,245,6737,798,84102,506,50011,622,399
7KBR, Inc.2025Stuart Bradie1,310,3084,879,03405,227,13211,614,552
8Maximus, Inc.2025Bruce Caswell976,9236,862,17703,300,00011,210,668
9FTI Consulting, Inc.2025Steven Gunby1,000,0007,450,94301,805,15210,273,735
10Clarivate, Plc2025Matti Shem Tov900,0006,399,5140918,0008,350,984
11Dycom Industries Inc.2026Daniel Peyovich1,176,2593,762,64203,058,2738,011,338
12Parsons Corporation2025Carey Smith1,078,8464,459,88301,531,6697,266,354
13ICF International, Inc.2025John Wasson1,003,0964,715,91801,122,3326,857,678
14Science Applications Intl. Corp2026James Reagan381,9042,170,1110400,2002,953,483

Each peer's compensation is from its most recently filed proxy; fiscal years differ by company. Each peer's figures come from its own filings; the subject company is highlighted. Peers whose chief executive compensation is outside our coverage universe are stated as such, never left blank.

10c

Incentive design against the same peers

CompanyAnnual incentive payoutLong-term vehicle mixPSU measures include TSRCompensation consultant
Tetra Tech134%PSU 60 · RSU 40Yes — Relative TSRMeridian Compensation Partners
AECOM107.0%PSU 60 · RSU 40Yes — 3-year Relative TSRExequity LLP
Booz Allen Hamilton, Inc.90%PSU 60 · RSU 40NoPay Governance LLC
CACI International Inc.not disclosedRSU 50 · PSU 50NoMercer
Clarivate, Plc102%PSU 50 · RSU 50Yes — 3-Year Relative TSR vs. S&P 500Pay Governance
Dycom Industries Inc.226%PSU 50 · RSU 50NoNot disclosed
FTI Consulting, Inc.not disclosedPSU 60 · RSU 40Yes — Relative TSRPearl Meyer
ICF International, Inc.86.41%PSU 50 · RSU 50NoAon Human Capital Solutions Practice
KBR, Inc.113.1%PSU 66 · RSU 33Yes — Relative Total Stockholder Return (TSR)Meridian Compensation Partners, LLC
Leidos Holdings, Inc.153%PSU 50 · RSU 30 · Options 20NoFrederic W. Cook & Co.
Maximus, Inc.220.0%PSU 100NoFW Cook
Parsons Corporation99.46%PSU 60 · RSU 40NoSemler Brossy
Science Applications Intl. Corpnot disclosednot disclosedNoFrederic W. Cook & Co., Inc.
Verisk Analytics, Inc.not disclosedPSU 60 · RSU 20 · Options 20Yes — Relative TSR versus S&P 500 Index constituentsFW Cook

Read from each company's Compensation Discussion and Analysis: annual incentive payout as a percentage of target, the disclosed long-term vehicle mix, whether performance-share measures include a total shareholder return component, and the retained compensation consultant. “Not disclosed” appears only where the company's filing does not state the item.

10d

Frequently asked questions

Who was the highest-paid executive at Tetra Tech in fiscal 2025?
As disclosed, Dan L. Batrack (Chairman, CEO and President) was the highest-paid executive at Tetra Tech in fiscal 2025, with total compensation of $11,622,399.
How does Tetra Tech's chief executive pay compare to its disclosed peer group?
As disclosed, Dan L. Batrack's total compensation ranked at the 62nd percentile of Tetra Tech's disclosed peer group.
What is Tetra Tech's CEO-to-median employee pay ratio?
As disclosed, Tetra Tech's CEO-to-median employee pay ratio was 133:1.
How did shareholders vote on Tetra Tech's executive compensation?
As disclosed, 92.23% of shareholders supported Tetra Tech's executive compensation in the latest say-on-pay vote.
How much does Tetra Tech spend in total on board compensation for fiscal 2025?
As disclosed, Tetra Tech reported total board compensation of $1,524,430 for fiscal 2025.

Answers are drawn only from the figures disclosed in this brief and cited to their location in the source filing. Where a figure required for an answer is not disclosed, that is stated rather than estimated.

11

Source register

Each figure's location is given both for the eye (section · page · table · row · column) and for a script (table/row/column index and exact character span in the filed document). Any figure can be independently confirmed against the source.

#SupportsDocumentFiledAccessionLocation in document
1Section 01, Dan L. BatrackDEF 14A2026-01-090001104659-26-002458Section “Summary Compensation Table”. As printed: 11,622,399. Filing ↗machine: t51 · r1 · c29 · span 1221310–1221320
2Section 01, Steven M. BurdickDEF 14A2026-01-090001104659-26-002458Section “Summary Compensation Table”. As printed: 3,221,577. Filing ↗machine: t51 · r4 · c29 · span 1234907–1234916
3Section 01, Leslie L. ShoemakerDEF 14A2026-01-090001104659-26-002458Section “Summary Compensation Table”. As printed: 3,200,938. Filing ↗machine: t51 · r7 · c29 · span 1248539–1248548
4Section 01, Preston HopsonDEF 14A2026-01-090001104659-26-002458Section “Summary Compensation Table”. As printed: 2,402,478. Filing ↗machine: t51 · r10 · c29 · span 1262156–1262165
5Section 01, Roger R. ArgusDEF 14A2026-01-090001104659-26-002458Section “Summary Compensation Table”. As printed: 2,376,272. Filing ↗machine: t51 · r13 · c29 · span 1275745–1275754
6Section 03, Roger R. Argus PSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1121068–1121075
7Section 03, Roger R. Argus RSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1122217–1122224
8Section 03, Preston Hopson PSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1116838–1116845
9Section 03, Leslie L. Shoemaker PSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1112572–1112579
10Section 03, Steven M. Burdick PSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1108303–1108310
11Section 03, Dan L. Batrack PSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1104032–1104041
12Section 03, Leslie L. Shoemaker RSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1113722–1113729
13Section 03, Steven M. Burdick RSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1109453–1109460
14Section 03, Dan L. Batrack RSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1105184–1105193
15Section 03, Preston Hopson RSUDEF 14A1900-01-010001104659-26-002458Section “Grants of Plan Based Awards—FY 2025” · grants of plan-based awards table. Filing ↗machine: span 1117987–1117994
16Section 07, pay ratioDEF 14A2026-01-090001104659-26-002458Section “CEO Pay Ratio”. As printed: 133 : 1. Filing ↗
17Section 08, Kirsten M. VolpiDEF 14A2026-01-090001104659-26-002458Section “Director Compensation”. As printed: 341,286. Filing ↗machine: r5 · c17 · span 728672–728820
18Section 08, Gary R. BirkenbeuelDEF 14A2026-01-090001104659-26-002458Section “Director Compensation”. As printed: 303,286. Filing ↗machine: r1 · c17 · span 716323–716471
19Section 08, Prashant GandhiDEF 14A2026-01-090001104659-26-002458Section “Director Compensation”. As printed: 298,286. Filing ↗machine: r2 · c17 · span 719431–719579
20Section 08, Kimberly E. RitrieviDEF 14A2026-01-090001104659-26-002458Section “Director Compensation”. As printed: 293,286. Filing ↗machine: r4 · c17 · span 725649–725797
21Section 08, Christiana ObiayaDEF 14A2026-01-090001104659-26-002458Section “Director Compensation”. As printed: 288,286. Filing ↗machine: r3 · c17 · span 722539–722687
22Section 08, M. Susan HardwickDEF 14A2026-01-090001104659-26-002458Section “Director Compensation”. As printed: 0. Filing ↗
23Section 08, Dan L. BatrackDEF 14A2026-01-090001104659-26-002458Section “Director Compensation”. As printed: 0. Filing ↗
24Section 08, Jeffrey R. FeelerDEF 14A2026-01-090001104659-26-002458Section “Director Compensation”. As printed: 0. Filing ↗
25Section 02, Gary R. Birkenbeuel 2026-01-12Form 42026-01-140001748476-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
26Section 02, Gary R. Birkenbeuel 2026-01-12Form 42026-01-140001748476-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
27Section 02, Gary R. Birkenbeuel 2026-01-12Form 42026-01-140001748476-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
28Section 02, Kimberly E. Ritrievi 2026-01-12Form 42026-01-140001592089-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
29Section 02, M. Susan Hardwick 2026-01-26Form 42026-01-280001584184-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
30Section 02, Jeffrey R. Feeler 2026-01-26Form 42026-01-280001369458-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
31Section 02, Brian N. Carter 2026-02-04Form 42026-02-060001628280-26-006115Insider equity transaction reported since the proxy statement. Filing ↗
32Section 02, Steven M. Burdick 2026-02-06Form 42026-02-060001628280-26-006116Insider equity transaction reported since the proxy statement. Filing ↗
33Section 02, Kirsten M. Volpi 2026-02-10Form 42026-02-120001628280-26-007775Insider equity transaction reported since the proxy statement. Filing ↗
34Section 02, Kirsten M. Volpi 2026-02-10Form 42026-02-120001628280-26-007775Insider equity transaction reported since the proxy statement. Filing ↗
35Section 02, Roger R. Argus 2026-02-19Form 42026-02-200001721930-26-000003Insider equity transaction reported since the proxy statement. Filing ↗
36Section 02, Christiana Obiaya 2026-02-19Form 42026-02-200001902712-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
37Section 02, Christiana Obiaya 2026-02-19Form 42026-02-200001902712-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
38Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
39Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
40Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
41Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
42Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
43Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
44Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
45Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
46Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
47Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
48Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
49Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
50Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
51Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
52Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
53Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
54Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
55Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
56Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
57Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
58Section 02, Kimberly E. Ritrievi 2026-03-16Form 42026-03-180001592089-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
59Section 02, Eric W. Thornburg 2026-04-27Form 42026-04-280001349767-26-000006Insider equity transaction reported since the proxy statement. Filing ↗
60Section 02, Jeffrey R. Feeler 2026-05-15Form 42026-05-150001369458-26-000006Insider equity transaction reported since the proxy statement. Filing ↗
61Section 02, Kirsten M. Volpi 2026-06-04Form 42026-06-050001582882-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
62Section 02, Kirsten M. Volpi 2026-06-04Form 42026-06-050001582882-26-000002Insider equity transaction reported since the proxy statement. Filing ↗
63Section 02, Kirsten M. Volpi 2026-08-04Form 42026-08-060001582882-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
64Section 02, Kirsten M. Volpi 2026-08-04Form 42026-08-060001582882-26-000004Insider equity transaction reported since the proxy statement. Filing ↗
65Section 06, 2026 voteForm 8-K2026-02-200001104659-26-018205Item 5.07 · say-on-pay result. As reported: 92.23% (votes for as printed: 199,849,461). Filing ↗
66Section 06, 2025 voteForm 8-K2025-02-280001104659-25-019107Item 5.07 · say-on-pay result. As reported: 91.57% (votes for as printed: 205,943,994). Filing ↗
67Section 06, 2024 voteForm 8-K2024-03-010001104659-24-029950Item 5.07 · say-on-pay result. As reported: 92.96% (votes for as printed: 41,317,469). Filing ↗
68Section 01 trend, Δ column (computed)Computed——Δ = current-FY total − prior-FY total per named officer.machine: formula: Δ = FY(n) − FY(n−1)
69Section 03b vehicle mix (computed)Computed——RSU / PSU / Options grant-date fair values summed per officer from the grants table; % performance-vested = PSU ÷ (RSU+PSU+Options).machine: formula: sums + PSU ratio
70Section 09b board cost (computed)Computed——Cash 658,000 + equity 866,430 + all other 0 = 1,524,430, summed across the director compensation table rows.machine: formula: Σ = 1,524,430
71CACI International Inc., Section 10b CEO totalDEF 14A2026-09-040001628280-26-060738CEO total compensation as printed in CACI International Inc.'s own proxy. As printed: 18,674,436. Filing ↗machine: r2 · c21 · span 646911–646921
72AECOM, Section 10b CEO totalDEF 14A2026-01-200000868857-26-000006CEO total compensation as printed in AECOM's own proxy. As printed: 15,973,622. Filing ↗machine: t164 · r3 · c8 · span 1954431–1954441
73Leidos Holdings, Inc., Section 10b CEO totalDEF 14A2026-03-190001336920-26-000138CEO total compensation as printed in Leidos Holdings, Inc.'s own proxy. As printed: 14,736,385. Filing ↗machine: r2 · c24 · span 1564240–1564250
74Booz Allen Hamilton, Inc., Section 10b CEO totalDEF 14A2026-06-110001443646-26-000021CEO total compensation as printed in Booz Allen Hamilton, Inc.'s own proxy. As printed: 13,800,777. Filing ↗machine: r4 · c27 · span 706824–706834
75Verisk Analytics, Inc., Section 10b CEO totalDEF 14A2026-04-030001193125-26-141398CEO total compensation as printed in Verisk Analytics, Inc.'s own proxy. As printed: 13,540,847. Filing ↗machine: r3 · c28 · span 887453–887463
76Tetra Tech (subject), Section 10b CEO totalDEF 14A2026-01-090001104659-26-002458CEO total compensation as printed in Tetra Tech's own proxy. As printed: 11,622,399. Filing ↗machine: t51 · r1 · c29 · span 1221310–1221320
77KBR, Inc., Section 10b CEO totalDEF 14A2026-03-300001104659-26-036847CEO total compensation as printed in KBR, Inc.'s own proxy. As printed: 11,614,552. Filing ↗machine: t266 · r7 · c14 · span 1965148–1965158
78Maximus, Inc., Section 10b CEO totalDEF 14A2026-01-220001032220-26-000007CEO total compensation as printed in Maximus, Inc.'s own proxy. As printed: 11,210,668. Filing ↗machine: r3 · c24 · span 739406–739416
79FTI Consulting, Inc., Section 10b CEO totalDEF 14A2026-04-210001193125-26-165147CEO total compensation as printed in FTI Consulting, Inc.'s own proxy. As printed: 10,273,735. Filing ↗machine: r5 · c18 · span 1110308–1110318
80Clarivate, Plc, Section 10b CEO totalDEF 14A2026-04-010001764046-26-000046CEO total compensation as printed in Clarivate, Plc's own proxy. As printed: 8,350,984. Filing ↗machine: t93 · r3 · c12 · span 1608280–1608289
81Dycom Industries Inc., Section 10b CEO totalDEF 14A2026-04-160000067215-26-000017CEO total compensation as printed in Dycom Industries Inc.'s own proxy. As printed: 8,011,338. Filing ↗machine: r2 · c46 · span 870397–870406
82Parsons Corporation, Section 10b CEO totalDEF 14A2026-03-020001193125-26-085390CEO total compensation as printed in Parsons Corporation's own proxy. As printed: 7,266,354. Filing ↗machine: t49 · r3 · c12 · span 1200471–1200480
83ICF International, Inc., Section 10b CEO totalDEF 14A2026-04-220001140361-26-016102CEO total compensation as printed in ICF International, Inc.'s own proxy. As printed: 6,857,678. Filing ↗machine: r2 · c19 · span 1792780–1792789
84Science Applications Intl. Corp, Section 10b CEO totalDEF 14A2026-04-220001571123-26-000069CEO total compensation as printed in Science Applications Intl. Corp's own proxy. As printed: 2,953,483. Filing ↗machine: r2 · c7 · span 1461258–1461267
85Section 10a, Leidos Holdings, Inc. reciprocityDEF 14A—0001336920-26-000138Leidos Holdings, Inc.'s most recent proxy was read; its disclosed peer group does not include Tetra Tech. Filing ↗
86Section 10a, Maximus, Inc. reciprocityDEF 14A—0001032220-26-000007Maximus, Inc. names Tetra Tech in its own disclosed peer group (read from its most recent proxy). Filing ↗
87Section 10a, Booz Allen Hamilton, Inc. reciprocityDEF 14A—0001443646-26-000021Booz Allen Hamilton, Inc.'s most recent proxy was read; its disclosed peer group does not include Tetra Tech. Filing ↗
88Section 10a, KBR, Inc. reciprocityDEF 14A—0001104659-26-036847KBR, Inc. names Tetra Tech in its own disclosed peer group (read from its most recent proxy). Filing ↗
89Section 10a, Clarivate, Plc reciprocityDEF 14A—0001764046-26-000046Clarivate, Plc's most recent proxy was read; its disclosed peer group does not include Tetra Tech. Filing ↗
90Section 10a, Parsons Corporation reciprocityDEF 14A—0001193125-26-085390Parsons Corporation's most recent proxy was read; its disclosed peer group does not include Tetra Tech. Filing ↗
91Section 10a, Dycom Industries Inc. reciprocityDEF 14A—0000067215-26-000017Dycom Industries Inc. names Tetra Tech in its own disclosed peer group (read from its most recent proxy). Filing ↗
92Section 10a, Science Applications Intl. Corp reciprocityDEF 14A—0001571123-26-000069Science Applications Intl. Corp names Tetra Tech in its own disclosed peer group (read from its most recent proxy). Filing ↗
93Section 10a, FTI Consulting, Inc. reciprocityDEF 14A—0001193125-26-165147FTI Consulting, Inc.'s most recent proxy was read; its disclosed peer group does not include Tetra Tech. Filing ↗
94Section 10a, Verisk Analytics, Inc. reciprocityDEF 14A—0001193125-26-141398Verisk Analytics, Inc.'s most recent proxy was read; its disclosed peer group does not include Tetra Tech. Filing ↗
95Section 10a, ICF International, Inc. reciprocityDEF 14A—0001140361-26-016102ICF International, Inc. names Tetra Tech in its own disclosed peer group (read from its most recent proxy). Filing ↗
96Section 10a, CACI International Inc. reciprocityDEF 14A—0001628280-26-060738CACI International Inc. names Tetra Tech in its own disclosed peer group (read from its most recent proxy). Filing ↗

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