ALAB insider reports multiple stock sales

ALAB reports insider stock dispositions.

Rhea-AI Filing Summary

ALAB reports insider stock dispositions. Philip Mazzara reported multiple common stock sales in Form 144 filings: 10,000 shares on 03/02/2026, 10,000 shares on 04/01/2026, and two sales on 05/18/2026 of 9,204 shares and 4,872 shares. The filing also lists 796 shares of restricted stock dated 11/15/2024.

Insights

Corporate Governance Analyst

Insider reported several share dispositions across March–May 2026.

The filings list discrete open-market or brokered sales by Philip Mazzara totaling multiple transactions: 10,000 shares on 03/02/2026, 10,000 shares on 04/01/2026, and 9,204 and 4,872 shares on 05/18/2026. These entries appear in the "Securities Sold During The Past 3 Months" section.

Cash‑flow treatment and whether transactions were pre‑planned are not stated. Subsequent filings or footnotes would be needed to clarify whether sales were pursuant to a trading plan or for other reasons.

Key Figures

Sale on 03/02/2026: 10,000 shares Sale on 04/01/2026: 10,000 shares Sales on 05/18/2026: 9,204 shares and 4,872 shares +1 more

4 metrics

Sale on 03/02/2026 10,000 shares Sale date <date>03/02/2026</date> with value <money>$1,174,740.60</money>

Sale on 04/01/2026 10,000 shares Sale date <date>04/01/2026</date> with value <money>$1,077,662.85</money>

Sales on 05/18/2026 9,204 shares and 4,872 shares Sale date <date>05/18/2026</date> with values <money>$2,166,253.44</money> and <money>$1,063,002.23</money>

Restricted stock listed 796 shares Restricted Stock dated <date>11/15/2024</date> (issuer)

Key Terms

Form 144, Restricted Stock, Securities Sold During The Past 3 Months

3 terms

Form 144 regulatory

"144: Securities Sold During The Past 3 Months"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock financial

"Common | 11/15/2024 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months | PHILIP MAZZARA"

FAQ

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

What sales did Philip Mazzara report on ALAB Form 144?

He reported sales of common stock including 10,000 shares on 03/02/2026, 10,000 shares on 04/01/2026, and 9,204 and 4,872 shares on 05/18/2026, each listed with transaction values.

Does the filing show proceeds from the reported ALAB sales?

The filing lists monetary amounts alongside each sale: $1,174,740.60, $1,077,662.85, $2,166,253.44, and $1,063,002.23, but it does not specify who received proceeds beyond the reported seller.

Are there any restricted shares noted in the ALAB filing?

Yes, the filing lists 796 restricted shares dated 11/15/2024 under "Securities To Be Sold"; the entry labels them as "Restricted Stock" with issuer as the source.

Do these Form 144 entries confirm the sales already occurred?

The document includes a "Securities Sold During The Past 3 Months" section with specific sale dates and amounts, indicating reported sales on those dates rather than only proposed transactions.

Is timing or motive for the ALAB insider sales explained?

The excerpt provides sale dates and amounts but contains no explanation of motive or any statement about trading plans, timing qualifiers, or tax withholding related to these transactions.

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

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Accepted by SEC EDGAR 05/21/2026 - 05:57 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	0001998163
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) 766-3806
Name of Person for Whose Account the Securities are To Be Sold	PHILIP MAZZARA
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	Officer

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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	796	231655.98	171407939	05/21/2026	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	11/15/2024	Restricted Stock	Issuer			796	11/15/2024	Not Applicable

* 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
PHILIP MAZZARA 2345 North First Street San Jose CA 95131	Common	05/18/2026	9204	2166253.44
PHILIP MAZZARA 2345 North First Street San Jose CA 95131	Common	05/18/2026	4872	1063002.23
PHILIP MAZZARA 2345 North First Street San Jose CA 95131	common	04/01/2026	10000	1077662.85
PHILIP MAZZARA 2345 North First Street San Jose CA 95131	common	03/02/2026	10000	1174740.60

144: Remarks and Signature

Remarks
Date of Notice	05/21/2026
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/ Philip Mazzara
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)