SEC 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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	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 CA 95131 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Astera Labs, Inc. [ ALAB ] Foreign Trading Symbol	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 09/01/2026
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person Form filed by More than One Reporting Person

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/01/2026		S(1)		2,575	D	$277.3203(2)	1,271,923	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		20,991	D	$278.3282(4)	1,250,932	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		37,176	D	$279.2802(5)	1,213,756	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		59,379	D	$280.0382(6)	1,154,377	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		12,882	D	$281.158(7)	1,141,495	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		5,870	D	$282.1283(8)	1,135,625	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		3,954	D	$283.185(9)	1,131,671	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		2,245	D	$284.1749(10)	1,129,426	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		340	D	$285.175(11)	1,129,086	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		2,677	D	$286.9944(12)	1,126,409	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		1,019	D	$287.9344(13)	1,125,390	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		892	D	$288.9543(14)	1,124,498	I	By Alba Trust(3)
Common Stock	09/01/2026		S(1)		568	D	$277.3195(2)	286,295	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		4,618	D	$278.3282(4)	281,677	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		8,179	D	$279.2804(5)	273,498	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		13,070	D	$280.0383(6)	260,428	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		2,835	D	$281.1581(7)	257,593	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		1,288	D	$282.1281(8)	256,305	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		868	D	$283.184(9)	255,437	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		491	D	$284.175(10)	254,946	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		74	D	$285.175(11)	254,872	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		588	D	$286.996(12)	254,284	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		225	D	$287.9343(13)	254,059	I	By Casa Alameda 2007, LLC(15)
Common Stock	09/01/2026		S(1)		196	D	$288.9543(14)	253,863	I	By Casa Alameda 2007, LLC(15)
Common Stock								5,000	I	By spouse
Common Stock								2,351	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

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 22, 2026.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $276.7200 to $277.7100, 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 $277.7200 to $278.7100, 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 $278.7200 to $279.7100, 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 $279.7200 to $280.7100, 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 $280.7200 to $281.7100, 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 $281.7200 to $282.7000, 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 $282.7200 to $283.7000, 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 $283.7200 to $284.7100, 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 $284.7600 to $285.5900, 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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $286.3600 to $287.3500, 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.

13. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $287.6400 to $288.4100, 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 $288.9400 to $288.9900, 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. 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.

Remarks:

	/s/ Philip Mazzara, Attorney-in-Fact	09/03/2026
	** 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.
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