[Form 4] Astera Labs, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Director Manuel Alba of Astera Labs (ALAB) reported multiple stock sales executed on June 20, 2025, through a pre-established Rule 10b5-1 trading plan from May 2024. The transactions involved:

• Casa Alameda 2007 LLC sold 3,709 shares at weighted average prices between $100.63-101.25 per share
• Alba Trust disposed of 16,441 shares at similar price ranges of $100.63-101.25 per share

Following these transactions, Alba maintains beneficial ownership of: 432,854 shares through Casa Alameda LLC, 1,967,757 shares via Alba Trust, 5,000 shares through spouse, and 2,351 shares directly. The filing includes disclaimers regarding beneficial ownership of trust and LLC holdings, limiting claims to Alba's pecuniary interests. All sales were executed according to the automated trading plan, demonstrating planned portfolio management rather than reactive selling.

Positive

• None.

Negative

• Director Manuel Alba executed planned sales of approximately 20,150 shares worth over $2 million through two investment vehicles (Casa Alameda 2007, LLC and Alba Trust) at prices between $100-101.73 per share

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).

X

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 ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
06/20/2025

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

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

X	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	06/20/2025		S(1)		2,467	D	$100.6269(2)	434,096	I	By Casa Alameda 2007, LLC(3)
Common Stock	06/20/2025		S(1)		1,242	D	$101.2519(4)	432,854	I	By Casa Alameda 2007, LLC(3)
Common Stock	06/20/2025		S(1)		10,934	D	$100.6271(2)	1,973,264	I	By Alba Trust(5)
Common Stock	06/20/2025		S(1)		5,507	D	$101.252(4)	1,967,757	I	By Alba Trust(5)
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 31, 2024.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $100.0000 to $100.9900, 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.

3. 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.

4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $101.0000 to $101.7300, 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. 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.

Remarks:

	/s/ Philip Mazzara, Attorney-in-Fact	06/24/2025
	** 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.

FAQ

How many ALAB shares did Director Manuel Alba sell on June 20, 2025?

On June 20, 2025, Manuel Alba sold a total of 20,150 shares through different entities: 3,709 shares through Casa Alameda 2007, LLC (2,467 + 1,242 shares) and 16,441 shares through the Alba Trust (10,934 + 5,507 shares).

What was the selling price range for ALAB stock in Director Alba's transactions?

The shares were sold in two price ranges: 1) Between $100.00 and $100.99 per share, with a weighted average price of $100.6269-$100.6271, and 2) Between $101.00 and $101.73 per share, with a weighted average price of $101.2519-$101.2520.

Was ALAB Director Manuel Alba's stock sale pre-planned?

Yes, the sales were pre-planned and executed automatically pursuant to a Rule 10b5-1 trading plan that Alba adopted on May 31, 2024, approximately one year before the transactions.

How many ALAB shares does Manuel Alba still own after the reported transactions?

After the transactions, Manuel Alba's beneficial ownership includes: 2,351 shares held directly, 432,854 shares through Casa Alameda 2007 LLC, 1,967,757 shares through the Alba Trust, and 5,000 shares held by his spouse, totaling approximately 2.4 million shares.

What positions does Manuel Alba hold at ALAB?

According to the Form 4 filing, Manuel Alba serves as a Director of Astera Labs, Inc. (ALAB). The filing indicates he is not an officer or 10% owner of the company.