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Amidon Derek G

Disclosed activity across 1 company

Tapewire entity
108273
SEC CIK
0001721981

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Reported relationships

Latest disclosed role at each company.

No relationships currently tracked through insider filings.

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

No balances currently tracked through insider filings.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

TETRA TECH INC

Report date October 01, 2023 · Filed November 15, 2023

Section 16 reporting ended · disclosed 2023-11-15. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
COMMON STOCKSEC Table I · non-derivativeDirect11,179 Reported balance Holding disclosure · report date 2023-10-01 · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · Balance 11,179

F1: Amount of securities beneficially owned was updated to reflect that 38 shares of common stock were acquired by the Reporting Person on December 15, 2022, pursuant to the Tetra Tech, Inc. Employee Stock Purchase Plan (ESPP).

Filing footnotes · ownership attribution and instrument terms

F1: Amount of securities beneficially owned was updated to reflect that 38 shares of common stock were acquired by the Reporting Person on December 15, 2022, pursuant to the Tetra Tech, Inc. Employee Stock Purchase Plan (ESPP).

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
November 21, 2017 Filed Nov 22, 2017 21:20 UTC TETRA TECH INC TTEK · Entity 3570 Tax withholdingCOMMON STOCK 49 $50.00 $2,450.00
Disclosure

SEC source: 0000831641-17-000088 · wf-form4_151138564197867.xml · nonDerivative · entry 1

Amidon Derek G · CIK 0001721981 · SVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,563

F1 · shares: 49 of the shares underlying restricted stock which vested on 11/21/2017 were withheld to pay the related tax liability.

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November 20, 2017 Filed Nov 21, 2017 22:05 UTC TETRA TECH INC TTEK · Entity 3570 Tax withholdingCOMMON STOCK 37 $48.55 $1,796.35
Disclosure

SEC source: 0000831641-17-000045 · wf-form4_151130189322805.xml · nonDerivative · entry 3

Amidon Derek G · CIK 0001721981 · SVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,612

F3 · shares: 37 of the shares underlying restricted stock which vested on 11/20/2017 were withheld to pay the related tax liability.

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November 18, 2017 Filed Nov 21, 2017 22:05 UTC TETRA TECH INC TTEK · Entity 3570 Tax withholdingCOMMON STOCK 813 $47.95 $38,983.35
Disclosure

SEC source: 0000831641-17-000045 · wf-form4_151130189322805.xml · nonDerivative · entry 2

Amidon Derek G · CIK 0001721981 · SVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,649

F2 · shares: 813 of the shares underlying restricted stock which vested on 11/18/2017 were withheld to pay the related tax liability.

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November 17, 2017 Filed Nov 21, 2017 22:05 UTC TETRA TECH INC TTEK · Entity 3570 GrantSTOCK OPTION (RIGHT TO BUY) · Derivative 5,580 $0.00 Strike: $47.95 $0.00
Disclosure

SEC source: 0000831641-17-000045 · wf-form4_151130189322805.xml · derivative · entry 4

Amidon Derek G · CIK 0001721981 · SVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,580

Underlying: COMMON STOCK · 5,580 shares

Expires 2027-11-17

F4 · derivative.exercise_date: The option becomes exercisable as to 25% of the Shares on each anniversary of the grant date.

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November 17, 2017 Filed Nov 21, 2017 22:05 UTC TETRA TECH INC TTEK · Entity 3570 GrantCOMMON STOCK 1,720 $0.00 $0.00
Disclosure

SEC source: 0000831641-17-000045 · wf-form4_151130189322805.xml · nonDerivative · entry 1

Amidon Derek G · CIK 0001721981 · SVP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,462

F1 · shares: 1,720 restricted stock units (RSUs) were awarded to the reporting person on November 17, 2017. The RSUs become vested as to 25% of the shares on November 18, 2018, and the anniversary of that date going forward until fully vested.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.