144: Filer Information

Filer CIK

0001484394

Filer CCC

XXXXXXXX

Is this a LIVE or TEST Filing?

LIVE

TEST

Submission Contact Information

Name

Phone

E-Mail Address

144: Issuer Information

Name of Issuer

Astera Labs, Inc.

SEC File Number

001-41979

Address of Issuer

2345 NORTH FIRST STREET
SAN JOSE
CALIFORNIA
95131

Phone

408-242-7319

Name of Person for Whose Account the Securities are To Be Sold

Dyckerhoff Stefan A

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Affiliate

144: Securities Information

Title of the Class of Securities To Be Sold

Name and Address of the Broker

Number of Shares or Other Units To Be Sold

Aggregate Market Value

Number of Shares or Other Units Outstanding

Approximate Date of Sale

Name the Securities Exchange

Common

Stifel Nicolaus & Company Inc
501 N Broadway
St Louis � MO � 63102

12499

4553995.00

170210000

06/03/2026

NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class

Date you Acquired

Nature of Acquisition Transaction

Name of Person from Whom Acquired

Is this a Gift?

Date Donor Acquired

Amount of Securities Acquired

Date of Payment

Nature of Payment *

Common

11/08/2019

Private Placement

Issuer

946

11/08/2019

Cash

Common

02/07/2020

Private Placement

Issuer

2559

02/07/2020

Cash

Common

05/17/2022

Private Placement

Issuer

661

05/17/2022

Cash

Common

08/15/2024

Pro-rata distribution from Venture Fund

Sutter Hill Ventures A CA LP which acquired shares from the Issuer

8333

05/17/2024

Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller

Title of Securities Sold

Date of Sale

Amount of Securities Sold

Gross Proceeds

Stefan Dyckerhoff
755 Page Mill Rd Ste A200
Palo Alto � CA � 94304

Common

04/17/2026

11599

2029828.00

Stefan Dyckerhoff
755 Page Mill Rd Ste A200
Palo Alto � CA � 94304

Common

04/20/2026

13399

2346435.00

Stefan Dyckerhoff
755 Page Mill Rd Ste A200
Palo Alto � CA � 94304

Common

05/07/2026

12499

2500174.00

144: Remarks and Signature

Remarks

Of the shares covered by this Form 144: an aggregate of 8,333 shares were sold by a trust of which Mr. Dyckerhoff is a trustee; 3,505 shares were sold by an individual retirement account for Mr. Dyckerhoff; and 661 shares were sold by a limited partnership of which Mr. Dyckerhoff's trust is the trustee of a trust which is the general partner.

Date of Notice

06/03/2026

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

12/01/2025

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

Kanwalpreet S Kalra under POA

144: Filer Information

Submission Contact Information

144: Issuer Information

144: Securities Information

144: Securities To Be Sold

144: Securities Sold During The Past 3 Months

144: Remarks and Signature

ATTENTION:

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

SEC Form 144 filed by Astera Labs Inc.