ALAB files Rule 144 for 10,000 common shares

ALAB filed a Rule 144 notice reporting a proposed sale of 10,000 shares of Common Stock to be sold through Nasdaq on 06/04/2026.

Rhea-AI Filing Summary

ALAB filed a Rule 144 notice reporting a proposed sale of 10,000 shares of Common Stock to be sold through Nasdaq on 06/04/2026. The filing lists issued RSUs of 8,437 (05/15/2026) and 1,563 (02/15/2026). It also discloses prior open-market sales by Jack R. Lazar of 7,500 shares on 03/05/2026 for $898,471.75 and 2,500 shares on 03/16/2026 for $325,000.00.

Insights

Securities Compliance Counsel

Rule 144 notice for resale activity, routine regulatory compliance.

This filing documents a proposed resale of 10,000 shares under Rule 144 with Nasdaq listed as the method. It lists recent RSU issuances and two completed sales by Jack R. Lazar in March 2026 with explicit sale proceeds.

Timing and volume are stated; cash‑flow treatment is the selling holders' proceeds. Subsequent SEC or broker confirmations will show execution details.

Key Figures

Proposed sale: 10,000 shares RSUs issued: 8,437 shares RSUs issued: 1,563 shares +2 more

5 metrics

Proposed sale 10,000 shares to be sold on 06/04/2026 via Nasdaq

RSUs issued 8,437 shares RSU dated 05/15/2026

RSUs issued 1,563 shares RSU dated 02/15/2026

Sale by Jack R. Lazar 7,500 shares sold 03/05/2026 for $898,471.75

Sale by Jack R. Lazar 2,500 shares sold 03/16/2026 for $325,000.00

Key Terms

Rule 144, RSU, selling holders

3 terms

Rule 144 regulatory

"filed a Rule 144 notice reporting a proposed sale"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

RSU financial

"RSU dated 05/15/2026 with 8,437 listed"

Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.

selling holders regulatory

"securities to be sold by selling holders via Nasdaq"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does ALAB's Form 144 disclose about proposed sales?

It discloses a proposed sale of 10,000 shares to be sold on 06/04/2026. The form names Nasdaq as the venue and lists RSU issuances dated 05/15/2026 and 02/15/2026 as related securities.

Who sold shares in the past three months according to the filing for ALAB?

The filing reports sales by Jack R. Lazar: 7,500 shares on 03/05/2026 and 2,500 shares on 03/16/2026. The disclosed proceeds were $898,471.75 and $325,000.00 respectively.

Are RSUs mentioned in ALAB's Form 144 and how many?

Yes. The filing lists RSUs of 8,437 dated 05/15/2026 and 1,563 dated 02/15/2026. These appear as securities referenced in the resale notice.

Does the Form 144 state who receives proceeds from the proposed sale?

The form identifies the securities as being sold by selling holders; it does not specify proceeds recipients beyond the selling holders. Execution and final proceeds allocation are not detailed in the excerpt.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/04/2026 - 04:10 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001277624
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	LAZAR JACK R
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	Director

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	UBS Financial Services, Inc. Eleven Madison Avenue 4th Floor New York NY 10010	10000	3551678.00	171407939	06/04/2026	Nasdaq

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	05/15/2026	RSU	Issuer			8437	05/15/2026	NA
Common	02/15/2026	RSU	Issuer			1563	02/15/2026	N/A

* 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
Jack R Lazar 2345 NORTH FIRST STREET SAN JOSE CA 95131	Common	03/05/2026	7500	898471.75
Jack R. Lazar 2345 NORTH FIRST STREET SAN JOSE CA 95131	Common	03/16/2026	2500	325000.00

144: Remarks and Signature

Remarks
Date of Notice	06/04/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/02/2025
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	/s/ UBS Financial Services Inc, as attorney-in-fact for Jack R. Lazar
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)