Obiaya Christiana

SEC source: 0001902712-26-000002 · wk-form4_1771632243.xml · derivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 495 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: Vesting of the RSUs, which was initially scheduled for November 18, 2026, was accelerated on the Reporting Person's retirement from the Issuer's board of directors.

F3 · derivative.expiration_date: The RSUs are exercisable at the time of vesting and do not have a set expiration date.

F4 · balance_after: Balance of 1,469 RSUs were cancelled upon retirement.

SEC source: 0001902712-26-000002 · wk-form4_1771632243.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,666

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001902712-25-000006 · wk-form4_1764724814.xml · derivative · entry 3

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 1,718 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F4 · derivative.exercise_date: The RSUs become 100% vested as to the shares underlying the RSUs on November 30, 2025.

F3 · derivative.expiration_date: The RSUs are exercisable at the time of vesting and do not have a set expiration date.

SEC source: 0001902712-25-000006 · wk-form4_1764724814.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,171

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001902712-25-000006 · wk-form4_1764724814.xml · derivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,964

Underlying: COMMON STOCK · 1,964 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: The RSUs become 100% vested as to the shares underlying the RSUs on November 30, 2026.

F3 · derivative.expiration_date: The RSUs are exercisable at the time of vesting and do not have a set expiration date.

SEC source: 0001902712-25-000004 · wk-form4_1763682324.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,453

F1 · shares: Shares acquired pursuant to vesting of performance stock units earned under 2018 Equity Incentive Plan.

SEC source: 0001127602-25-017683 · form4.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,589

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-25-017683 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,242

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-25-009877 · form4.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,461

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-25-009877 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,256

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-24-029659 · form4.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,523

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-24-029659 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,176

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0000831641-24-000115 · wk-form4_1733274404.xml · derivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 2,125 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: The RSUs become 100% vested as to the shares underlying the RSUs on November 30, 2024.

F4 · derivative.expiration_date: The RSUs are exercisable at the time of vesting and do not have a set expiration date.

F5 · derivative.underlying_shares: 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.

SEC source: 0000831641-24-000115 · wk-form4_1733274404.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,810

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: On September 6, 2024, the balance of 337 shares of common stock was updated pursuant to a 5 to 1 forward stock split, resulting in an additional 1,348 shares of common stock.

SEC source: 0000831641-24-000094 · wk-form4_1732322073.xml · derivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,718

Underlying: COMMON STOCK · 1,718 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: The RSUs become 100% vested as to the shares underlying the RSUs on November 30, 2025.

F3 · derivative.expiration_date: The RSUs are exercisable at the time of vesting and do not have a set expiration date.

SEC source: 0001127602-24-024145 · form4.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,395

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-24-024145 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,048

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-24-019226 · form4.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,267

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-24-019226 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,920

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-24-010408 · form4.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,139

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-24-010408 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,934

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0000831641-24-000005 · wk-form4_1706826187.xml · derivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: COMMON STOCK · 337 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: The restricted stock units (RSUs) become vested as to 100% of the shares underlying the RSUs on January 30, 2024.

F2 · derivative.expiration_date: The RSUs are exercisable at the time of vesting and do not have a set expiration date.

SEC source: 0000831641-24-000005 · wk-form4_1706826187.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 337

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-23-030080 · form4.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,921,301

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-23-030080 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,922,606

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

SEC source: 0001127602-23-030312 · form4a.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,201

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

F2 · balance_after: On August 31, 2023, the Issuer effected a 1-for-35 reverse stock split (the "Reverse Stock Split") of its outstanding shares of Common Stock. The numbers of shares of Common Stock reported on this Form 4 have been adjusted to reflect the Reverse Split unless otherwise noted.

SEC source: 0001127602-23-030312 · form4a.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,506

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

F2 · balance_after: On August 31, 2023, the Issuer effected a 1-for-35 reverse stock split (the "Reverse Stock Split") of its outstanding shares of Common Stock. The numbers of shares of Common Stock reported on this Form 4 have been adjusted to reflect the Reverse Split unless otherwise noted.

SEC source: 0000831641-23-000105 · wk-form4_1700701591.xml · derivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 425

Underlying: COMMON STOCK · 425 shares

Expires not disclosed

F1 · security: 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.

F2 · derivative.exercise_date: The RSUs become 100% vested as to the shares underlying the RSUs on November 30, 2024.

F3 · derivative.expiration_date: The RSUs are exercisable at the time of vesting and do not have a set expiration date.

SEC source: 0001127602-23-019293 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,923,044

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

SEC source: 0001127602-23-014773 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,953,485

F1 · shares: These shares are represented by restricted stock units ("RSUs") granted on May 3, 2023 under Issuer's 2021 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of the Common Stock of the Issuer. The shares of Common Stock underlying the RSUs will vest over a period of four years. 6.25% of the shares of Common Stock underlying the RSUs vest on June 15, 2023 and on each March 15, June 15, September 15 and December 15 thereafter, subject to the Reporting Person's continuous service.

SEC source: 0001127602-23-010728 · form4.xml · nonDerivative · entry 2

Obiaya Christiana · CIK 0001902712 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 453,485

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units ("RSUs"). The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

SEC source: 0001127602-23-010728 · form4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 463,860

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units ("RSUs"). The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

SEC source: 0000831641-23-000008 · wf-form4_167530106387833.xml · derivative · entry 1

Obiaya Christiana · CIK 0001902712 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 337

Underlying: COMMON STOCK · 337 shares

Expires not disclosed

F1 · shares: 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.

F2 · derivative.exercise_date: The RSUs become vested as to 100% of the shares underlying the RSUs on January 30, 2024.

F3 · derivative.expiration_date: The RSUs are exercisable at the time of vesting and do not have a set expiration date.

SEC source: 0001209191-22-001380 · doc4.xml · derivative · entry 2

Obiaya Christiana · CIK 0001902712 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,006,642

Underlying: Common Stock · 1,006,642 shares

Expires 2031-03-08

F3 · price: Represents options issued by Legacy Heliogen and assumed by the Issuer on December 30, 2021 pursuant to the Merger Agreement.

F2 · derivative.exercise_date: One quarter (25%) of the shares shall vest on March 9, 2022, and the remainder shall vest in 36 equal monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001209191-22-001380 · doc4.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 503,321

F1 · shares: These shares are represented by restricted stock units ("RSUs") issued by Heliogen, Inc., a Delaware corporation ("Legacy Heliogen") and assumed by the Issuer on December 30, 2021 pursuant to that certain Business Combination Agreement ("Merger Agreement"), dated as of July 6, 2021, by and among Athena Technology Acquisition Corp., a Delaware corporation ("Athena"), HelioMax Merger Sub, Inc., a Delaware corporation and a wholly-owned subsidiary of Athena, and Legacy Heliogen. Each RSU represents a contingent right to receive one share of the Common Stock of the Issuer. Six and one-quarter percent (6.25%) of the shares underlying the RSUs vest in quarterly installments with the first installment vesting on March 15, 2022, subject to the Reporting Person's continuous service.

SEC source: 0001209191-22-002614 · doc4a.xml · derivative · entry 2

Obiaya Christiana · CIK 0001902712 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,006,642

Underlying: Common Stock · 1,006,642 shares

Expires 2031-03-08

F3 · price: Represents options issued by Legacy Heliogen and assumed by the Issuer on December 30, 2021 pursuant to the Merger Agreement.

F2 · derivative.exercise_date: One quarter (25%) of the shares shall vest on March 9, 2022, and the remainder shall vest in 36 equal monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001209191-22-002614 · doc4a.xml · nonDerivative · entry 1

Obiaya Christiana · CIK 0001902712 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 503,321

F1 · shares: These shares are represented by restricted stock units ("RSUs") issued by Heliogen, Inc., a Delaware corporation ("Legacy Heliogen") and assumed by the Issuer on December 30, 2021 pursuant to that certain Business Combination Agreement ("Merger Agreement"), dated as of July 6, 2021, by and among Athena Technology Acquisition Corp., a Delaware corporation ("Athena"), HelioMax Merger Sub, Inc., a Delaware corporation and a wholly-owned subsidiary of Athena, and Legacy Heliogen. Each RSU represents a contingent right to receive one share of the Common Stock of the Issuer. Six and one-quarter percent (6.25%) of the shares underlying the RSUs vest in quarterly installments with the first installment vesting on March 15, 2022, subject to the Reporting Person's continuous service.