SEC FORM 4

SEC FORM 4SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ALBA MANUEL

(Last)

(First)

(Middle)

C/O ASTERA LABS, INC.

2345 NORTH FIRST STREET

(Street)

SAN JOSE

CALIFORNIA

95131

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Astera Labs, Inc. [ ALAB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	07/01/2026		S⁽¹⁾		1,520	D	$460.0721⁽²⁾	1,286,004	I	By Alba Trust⁽³⁾
Common Stock	07/01/2026		S⁽¹⁾		2,129	D	$461.4701⁽⁴⁾	1,283,875	I	By Alba Trust⁽³⁾
Common Stock	07/01/2026		S⁽¹⁾		2,862	D	$462.4414⁽⁵⁾	1,281,013	I	By Alba Trust⁽³⁾
Common Stock	07/01/2026		S⁽¹⁾		2,256	D	$463.3535⁽⁶⁾	1,278,757	I	By Alba Trust⁽³⁾
Common Stock	07/01/2026		S⁽¹⁾		1,394	D	$464.4527⁽⁷⁾	1,277,363	I	By Alba Trust⁽³⁾
Common Stock	07/01/2026		S⁽¹⁾		343	D	$466.1389⁽⁸⁾	1,277,020	I	By Alba Trust⁽³⁾
Common Stock	07/01/2026		S⁽¹⁾		995	D	$466.8959⁽⁹⁾	1,276,025	I	By Alba Trust⁽³⁾
Common Stock	07/01/2026		S⁽¹⁾		1,527	D	$467.9952⁽¹⁰⁾	1,274,498	I	By Alba Trust⁽³⁾
Common Stock	07/01/2026		S⁽¹⁾		1,286	D	$429.5782⁽¹¹⁾	318,577	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		6,630	D	$430.7908⁽¹³⁾	311,947	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		767	D	$432.7922⁽¹⁴⁾	311,180	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		346	D	$433.4288⁽¹⁵⁾	310,834	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		501	D	$434.7802⁽¹⁶⁾	310,333	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		467	D	$435.7564⁽¹⁷⁾	309,866	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		804	D	$436.8202⁽¹⁸⁾	309,062	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		469	D	$437.9321⁽¹⁹⁾	308,593	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		650	D	$438.7871⁽²⁰⁾	307,943	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		952	D	$440.0527⁽²¹⁾	306,991	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		1,519	D	$440.857⁽²²⁾	305,472	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		984	D	$441.7943⁽²³⁾	304,488	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		1,095	D	$442.8714⁽²⁴⁾	303,393	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		1,197	D	$443.8248⁽²⁵⁾	302,196	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		1,330	D	$444.9081⁽²⁶⁾	300,866	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		948	D	$445.8515⁽²⁷⁾	299,918	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		898	D	$446.9136⁽²⁸⁾	299,020	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		883	D	$447.8608⁽²⁹⁾	298,137	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		1,479	D	$448.8476⁽³⁰⁾	296,658	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		570	D	$449.8885⁽³¹⁾	296,088	I	By Casa Alameda 2007, LLC⁽¹²⁾
Common Stock	07/01/2026		S⁽¹⁾		734	D	$450.9443⁽³²⁾	295,354	I	By Casa Alameda 2007, LLC⁽¹²⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The sales reported in this Form 4 occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 29, 2025.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $459.6000 to $460.4400, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. These shares are owned directly by Manuel Alba-Marquez in trust for Alba 2003 Living Trust (the "Alba Trust"), of which the Reporting Person and his spouse are co-trustees. 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.

4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $460.9300 to $461.8600, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $461.9300 to $462.8800, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

6. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $462.9600 to $463.9400, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

7. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $463.9600 to $464.7800, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

8. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $465.7000 to $466.5100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

9. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $466.7000 to $467.1000, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

10. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $467.9100 to $468.0000, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

11. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $429.1100 to $430.0700, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

12. These shares are owned directly by Casa Alameda 2007, LLC, of which the Reporting Person is a manager. 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.

13. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $430.1100 to $430.9300, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

14. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $432.1800 to $433.1400, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

15. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $433.2300 to $433.5600, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

16. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $434.2800 to $435.2500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

17. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $435.3200 to $436.3100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

18. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $436.3300 to $437.3100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

19. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $437.3300 to $438.3200, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

20. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $438.3600 to $439.3200, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

21. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $439.3600 to $440.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

22. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $440.3600 to $441.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

23. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $441.3600 to $442.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

24. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $442.3600 to $443.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

25. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $443.3600 to $444.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

26. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $444.3600 to $445.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

27. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $445.3600 to $446.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

28. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $446.3600 to $447.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

29. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $447.3600 to $448.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

30. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $448.3600 to $449.3300, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

31. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $449.4200 to $450.4000, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

32. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $450.4600 to $451.4500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Remarks:

This Form 4 is being filed in three parts due to the limitations of the U.S. Securities and Exchange Commission EDGAR filing system. Part 2 of 3.

	/s/ Philip Mazzara, Attorney-in-Fact	07/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)