Key facts
- This page summarizes Kimberly E. Ritrievi's Form 4 filing for TETRA TECH INC (TTEK).
- 21 reported transactions and 10 derivative rows are listed below.
- Accepted by SEC: 18 Mar 2026, 20:43.
Kimberly E. Ritrievi - 16 Mar 2026 Form 4 Insider Report for TETRA TECH INC (TTEK)
- Reporting relationship
- Director
- Issuer ticker
- TTEK
- Reported as of
- 16 Mar 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 18 Mar 2026, 20:43:25 UTC
- Prior SEC filing
- 14 Jan 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Preston Hopson, Attorney-in-fact for Kimberly E. Ritrievi
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Kimberly E. Ritrievi filed Form 4 for TETRA TECH INC (TTEK) on 18 Mar 2026.
Change
- Previous filing in this sequence was filed on 14 Jan 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001592089
Primary reporting owner
Ritrievi Kimberly E
- Relationship
- Director
- Address
- 3475 EAST FOOTHILL BOULEVARD, PASADENA
- Signature
- /s/ Preston Hopson, Attorney-in-fact for Kimberly E. Ritrievi
- Signature date
- 18 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +4,500
- Change %
- +3.1%
- Price
- $0.000000*
- Shares after
- 149,908
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +2,250
- Change %
- +1.5%
- Price
- $0.000000*
- Shares after
- 152,158
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +1,925
- Change %
- +1.3%
- Price
- $0.000000*
- Shares after
- 154,083
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +2,910
- Change %
- +1.9%
- Price
- $0.000000*
- Shares after
- 156,993
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +2,050
- Change %
- +1.3%
- Price
- $0.000000*
- Shares after
- 159,043
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +795
- Change %
- +0.5%
- Price
- $0.000000*
- Shares after
- 159,838
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +795
- Change %
- +0.5%
- Price
- $0.000000*
- Shares after
- 160,633
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +1,900
- Change %
- +1.2%
- Price
- $0.000000*
- Shares after
- 162,533
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +2,125
- Change %
- +1.3%
- Price
- $0.000000*
- Shares after
- 164,658
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Options Exercise
- Transaction value
- Shares
- +1,718
- Change %
- +1%
- Price
- $0.000000*
- Shares after
- 166,376
- Date
- 16 Mar 2026
- Ownership
- Direct
TTEK
transaction
COMMON STOCK
Award
- Transaction value
- Shares
- +25,883
- Change %
- +16%
- Price
- $0.000000*
- Shares after
- 192,259
- Date
- 16 Mar 2026
- Ownership
- Direct
- Footnotes
- F1
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -4,500
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 4,500
- Exercise price
- Footnotes
- F2, F3, F4
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -2,250
- Change %
- -50%
- Price
- $0.000000*
- Shares after
- 2,250
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 2,250
- Exercise price
- Footnotes
- F2, F3, F4
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -1,925
- Change %
- -50%
- Price
- $0.000000*
- Shares after
- 1,925
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 1,925
- Exercise price
- Footnotes
- F2, F3, F4
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -2,910
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 2,910
- Exercise price
- Footnotes
- F2, F3, F4
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -2,050
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 2,050
- Exercise price
- Footnotes
- F2, F3, F4, F5
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -795
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 795
- Exercise price
- Footnotes
- F2, F3, F4, F6
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -795
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 795
- Exercise price
- Footnotes
- F2, F3, F4, F6
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -1,900
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 1,900
- Exercise price
- Footnotes
- F2, F3, F4, F7
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -2,125
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 2,125
- Exercise price
- Footnotes
- F2, F3, F4, F8
TTEK
transaction
Derivative
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
Options Exercise
- Transaction value
- Shares
- -1,718
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 16 Mar 2026
- Ownership
- Direct
- Underlying class
- COMMON STOCK
- Underlying amount
- 1,718
- Exercise price
- Footnotes
- F2, F3, F4
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Section 16 status
Kimberly E. Ritrievi is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.
Explanation of responses 8 footnotes
Footnote F1
Shares acquired pursuant to vesting of performance stock units ("PSU") earned under 2018 Equity Incentive Plan. The PSUs vested between 11/23/2021 and 11/18/2025 but were deferred under the Issuer's Deferred Compensation Plan and have settled upon retirement.
Footnote F2
Represents an award of restricted stock units (RSUs), each unit of which represents a contingent right to receive one share of Tetra Tech common stock.
Footnote F3
The RSUs become 100% vested as to the shares underlying the RSUs on the first anniversary date.
Footnote F4
The RSUs are exercisable at the time of vesting and do not have a set expiration date.
Footnote F5
On September 6, 2024, the balance of 410 shares was updated pursuant to a 5 to 1 forward stock split, resulting in an additional 1,640 shares of common stock.
Footnote F6
On September 6, 2024, the balance of 159 shares was updated pursuant to a 5 to 1 forward stock split, resulting in an additional 636 shares of common stock.
Footnote F7
On September 6, 2024, the balance of 380 shares was updated pursuant to a 5 to 1 forward stock split, resulting in an additional 1,520 shares of common stock.
Footnote F8
On September 6, 2024, the balance of 425 shares was updated pursuant to a 5 to 1 forward stock split, resulting in an additional 1,700 shares of common stock.