ALAB

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · derivative · entry 14

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Limited Partnership (SHV)

Disclosed balance after: 0

Underlying: Common Stock · 14,957,606 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: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F4 · ownership.nature: Shares held by Sutter Hill Ventures, a California Limited Partnership ("SHV"). The Reporting Person is a managing director and member of the management committee of the general partner of SHV. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · derivative · entry 13

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 0

Underlying: Common Stock · 1,010 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: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F3 · ownership.nature: Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · derivative · entry 12

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 179,617 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: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · derivative · entry 11

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Limited Partnership (TF)

Disclosed balance after: 0

Underlying: Common Stock · 1,010 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: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F2 · ownership.nature: Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · derivative · entry 10

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 0

Underlying: Common Stock · 23,827 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: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F5 · ownership.nature: Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · derivative · entry 9

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Limited Partnership (SHV)

Disclosed balance after: 0

Underlying: Common Stock · 9,672 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: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F4 · ownership.nature: Shares held by Sutter Hill Ventures, a California Limited Partnership ("SHV"). The Reporting Person is a managing director and member of the management committee of the general partner of SHV. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · derivative · entry 8

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 0

Underlying: Common Stock · 65 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: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F3 · ownership.nature: Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · derivative · entry 7

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Limited Partnership (TF)

Disclosed balance after: 0

Underlying: Common Stock · 65 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: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F2 · ownership.nature: Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · nonDerivative · entry 6

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By SHM Investments, LLC

Disclosed balance after: 210,013

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 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F6 · ownership.nature: Shares held by SHM Investments, LLC ("SHMI"). The Reporting Person is a managing member of SHMI. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · nonDerivative · entry 5

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 179,617

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 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · nonDerivative · entry 4

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 23,827

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 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F5 · ownership.nature: Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · nonDerivative · entry 3

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Limited Partnership (SHV)

Disclosed balance after: 16,761,590

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 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F4 · ownership.nature: Shares held by Sutter Hill Ventures, a California Limited Partnership ("SHV"). The Reporting Person is a managing director and member of the management committee of the general partner of SHV. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · nonDerivative · entry 2

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 16,503

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 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F3 · ownership.nature: Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0001415889-24-009006 · form4-03222024_090324.xml · nonDerivative · entry 1

Dyckerhoff Stefan A · CIK 0001484394 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Limited Partnership (TF)

Disclosed balance after: 9,936

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 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.

F2 · ownership.nature: Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.

SEC source: 0000950170-24-035469 · ownership.xml · nonDerivative · entry 1

LAZAR JACK R · CIK 0001277624 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 165,000

F1 · shares: Represents shares acquired pursuant to a directed share program in connection with the Issuer's initial public offering.

SEC source: 0000950170-24-035418 · ownership.xml · derivative · entry 3

Tate Michael Truett · CIK 0001399546 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Tate Trust

Disclosed balance after: 0

Underlying: Common Stock · 879,108 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: Each share of Series A Preferred Stock automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Series A Preferred Stock have no expiration date.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Series A Preferred Stock have no expiration date.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Series A Preferred Stock have no expiration date.

F3 · ownership.nature: These shares are owned directly by Michael T Tate and Jeanne Larue Tate as Trustees of the Tate 1997 Living Trust Dated April 24, 1997 (the "Tate Trust"), of which the Reporting Person is a trustee. The Reporting Person disclaims beneficial ownership of these securities, except to the extent, if any, of his pecuniary interest therein, and the filing of this Form 4 is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0000950170-24-035418 · ownership.xml · nonDerivative · entry 2

Tate Michael Truett · CIK 0001399546 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Tate Trust

Disclosed balance after: 2,150,488

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 · price: Each share of Series A Preferred Stock automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Series A Preferred Stock have no expiration date.

F3 · ownership.nature: These shares are owned directly by Michael T Tate and Jeanne Larue Tate as Trustees of the Tate 1997 Living Trust Dated April 24, 1997 (the "Tate Trust"), of which the Reporting Person is a trustee. The Reporting Person disclaims beneficial ownership of these securities, except to the extent, if any, of his pecuniary interest therein, and the filing of this Form 4 is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0000950170-24-035423 · ownership.xml · nonDerivative · entry 1

HURLSTON MICHAEL E. · CIK 0001573338 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 121,747

F1 · shares: Represents shares acquired pursuant to a directed share program in connection with the Issuer's initial public offering.

SEC source: 0000950170-24-035412 · ownership.xml · derivative · entry 8

Mohan Jitendra · CIK 0001998053 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Living Trust

Disclosed balance after: 0

Underlying: Common Stock · 66,288 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: Each share of Series A Preferred Stock automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Series A Preferred Stock have no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Series A Preferred Stock have no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Series A Preferred Stock have no expiration date.

F2 · ownership.nature: These shares are owned directly by a living trust (the "Living Trust"), of which the Reporting Person is a trustee. The Reporting Person disclaims beneficial ownership of these securities, except to the extent, if any, of his pecuniary interest therein, and the filing of this Form 4 is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0000950170-24-035412 · ownership.xml · nonDerivative · entry 1

Mohan Jitendra · CIK 0001998053 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Living Trust

Disclosed balance after: 4,592,603

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 · price: Each share of Series A Preferred Stock automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Series A Preferred Stock have no expiration date.

F2 · ownership.nature: These shares are owned directly by a living trust (the "Living Trust"), of which the Reporting Person is a trustee. The Reporting Person disclaims beneficial ownership of these securities, except to the extent, if any, of his pecuniary interest therein, and the filing of this Form 4 is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.

SEC source: 0000950170-24-035418 · ownership.xml · nonDerivative · entry 1

Tate Michael Truett · CIK 0001399546 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,271,380

F1 · shares: Represents shares of Common Stock withheld by the Issuer in satisfaction of tax withholding obligations in connection with the vesting of restricted stock units previously granted to the Reporting Person. Such withholding is mandated by an election of the Issuer made in advance and does not represent a discretionary trade by the Reporting Person.

SEC source: 0000950170-24-035462 · ownership.xml · nonDerivative · entry 1

Mazzara Philip · CIK 0001998163 · General Counsel and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 358,575

F1 · shares: Represents shares of Common Stock withheld by the Issuer in satisfaction of tax withholding obligations in connection with the vesting of restricted stock units previously granted to the Reporting Person. Such withholding is mandated by an election of the Issuer made in advance and does not represent a discretionary trade by the Reporting Person.

SEC source: 0000950170-24-034747 · ownership.xml · nonDerivative · entry 2

Tate Michael Truett · CIK 0001399546 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,300,069

F1 · date: This transaction occurred prior to the Issuer's initial public offering and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended. The securities covered by such transaction were previously included on the Reporting Person's Form 3.

F3 · shares: Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.

F4 · shares: These shares represent an award of RSUs granted on February 7, 2024 under the 2018 Plan. Such award vests upon satisfaction of both (i) a time-based condition, which provides that 100% of the RSUs shall vest on February 15, 2025 and (ii) a performance-based condition, which is satisfied upon the occurrence of a change in control of the Issuer or the consummation of an initial public offering of the Issuer's equity securities, subject to the Reporting Person's continuous service relationship with the Issuer through each applicable vesting date.

SEC source: 0000950170-24-034747 · ownership.xml · nonDerivative · entry 1

Tate Michael Truett · CIK 0001399546 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,262,569

F1 · date: This transaction occurred prior to the Issuer's initial public offering and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended. The securities covered by such transaction were previously included on the Reporting Person's Form 3.

F2 · shares: These shares represent an award of restricted stock units ("RSUs") granted on January 24, 2024 under the Astera Labs, Inc. Amended and Restated 2018 Equity Incentive Plan ("2018 Plan"). Such award vests upon satisfaction of both (i) a time-based condition, which provides that the RSUs shall vest as to 25% on February 15, 2025 and the remaining RSUs shall vest in 12 equal quarterly installments thereafter, and (ii) a performance-based condition, which is satisfied upon the occurrence of a change in control of the Issuer or the consummation of an initial public offering of the Issuer's equity securities, subject to the Reporting Person's continuous service relationship with the Issuer through each applicable vesting date.

F3 · shares: Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0000950170-24-034776 · ownership.xml · nonDerivative · entry 1

Gajendra Sanjay · CIK 0001998179 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,704,335

F1 · date: This transaction occurred prior to the Issuer's initial public offering and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended. The securities covered by such transaction were previously included on the Reporting Person's Form 3.

F2 · shares: These shares represent an award of restricted stock units ("RSUs") granted on January 24, 2024 under the Astera Labs, Inc. Amended and Restated 2018 Equity Incentive Plan. Such award vests upon satisfaction of both (i) a time-based condition, which provides that the RSUs shall vest as to 25% on February 15, 2025 and the remaining RSUs shall vest in 12 equal quarterly installments thereafter, and (ii) a performance-based condition, which is satisfied upon the occurrence of a change in control of the Issuer or the consummation of an initial public offering of the Issuer's equity securities, subject to the Reporting Person's continuous service relationship with the Issuer through each applicable vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0000950170-24-034779 · ownership.xml · nonDerivative · entry 1

Mazzara Philip · CIK 0001998163 · General Counsel and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 362,721

F1 · date: This transaction occurred prior to the Issuer's initial public offering and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended. The securities covered by such transaction were previously included on the Reporting Person's Form 3.

F2 · shares: These shares represent an award of restricted stock units ("RSUs") granted on January 24, 2024 under the Astera Labs, Inc. Amended and Restated 2018 Equity Incentive Plan. Such award vests upon satisfaction of both (i) a time-based condition, which provides that the RSUs shall vest as to 25% on February 15, 2025 and the remaining RSUs shall vest in 12 equal quarterly installments thereafter, and (ii) a performance-based condition, which is satisfied upon the occurrence of a change in control of the Issuer or the consummation of an initial public offering of the Issuer's equity securities, subject to the Reporting Person's continuous service relationship with the Issuer through each applicable vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0000950170-24-034736 · ownership.xml · nonDerivative · entry 1

Mohan Jitendra · CIK 0001998053 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,704,335

F1 · date: This transaction occurred prior to the Issuer's initial public offering and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended. The securities covered by such transaction were previously included on the Reporting Person's Form 3.

F2 · shares: These shares represent an award of restricted stock units ("RSUs") granted on January 24, 2024 under the Astera Labs, Inc. Amended and Restated 2018 Equity Incentive Plan. Such award vests upon satisfaction of both (i) a time-based condition, which provides that the RSUs shall vest as to 25% on February 15, 2025 and the remaining RSUs shall vest in 12 equal quarterly installments thereafter, and (ii) a performance-based condition, which is satisfied upon the occurrence of a change in control of the Issuer or the consummation of an initial public offering of the Issuer's equity securities, subject to the Reporting Person's continuous service relationship with the Issuer through each applicable vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.