[144] Astera Labs, Inc. SEC Filing

Rhea-AI Filing Summary

Astera Labs, Inc. (ALAB) Form 144 summary: Philip Mazzara filed a notice to sell 20,000 common shares via Morgan Stanley Smith Barney LLC, with an aggregate market value of $3,584,000 and an approximate sale date of 08/28/2025. The shares were acquired on 03/14/2022 through previously exercised stock options and were paid for in cash. The filing reports 166,219,140 shares outstanding for the issuer. It also records a prior sale by the same person of 7,237 shares on 08/18/2025 for gross proceeds of $1,328,064.80. The filer certifies they are not aware of any undisclosed material adverse information about the issuer.

Positive

• Comprehensive Rule 144 disclosure including acquisition date, payment method, broker, and planned sale date
• Use of a licensed broker (Morgan Stanley Smith Barney LLC) increases execution transparency
• Filer certifies no undisclosed material adverse information, meeting the standard disclosure representation

Negative

• Insider has recently sold shares (7,237 shares on 08/18/2025), which may indicate continued disposition of holdings
• Planned sale value of $3.58M is a meaningful personal liquidity event even if immaterial to total shares outstanding

Insights

Securities Analyst

TL;DR Insider plans a routine sale of 20,000 shares; size is small relative to total outstanding shares.

The filing shows an insider-originated sale following prior recent disposals and stems from previously exercised options acquired on 03/14/2022. At an aggregate market value of $3.58 million, the planned sale represents approximately 0.012% of the issuer's reported 166,219,140 shares outstanding, indicating limited dilution or immediate market impact. The use of a major broker and the prior sale on 08/18/2025 add transparency to execution. This is a standard Rule 144 disclosure without new corporate developments disclosed.

Corporate Governance Expert

TL;DR Disclosure complies with Rule 144 and includes required certifications; no governance red flags disclosed.

The filer affirms absence of undisclosed material adverse information and provides acquisition, payment, and broker details, satisfying key compliance elements for restricted/insider sales. The transaction arises from option exercise proceeds, not from company operational changes. Multiple recent sales by the same person are noted, but the filing contains no indication of undisclosed related-party transactions, policy breaches, or insider trading concerns beyond routine liquidity events.

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
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	20000	3584000.00	166219140	08/28/2025	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	03/14/2022	Previously Exercised Stock Options	Issuer			20000	03/14/2022	Cash

* 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	08/18/2025	7237	1328064.80

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What shares is ALAB insider Philip Mazzara planning to sell?

The notice reports a planned sale of 20,000 common shares of Astera Labs (ALAB).

When were the shares being sold acquired?

The shares were acquired on 03/14/2022 through previously exercised stock options and paid in cash.

Who will broker the proposed sale and when is the approximate sale date?

The sale is to be executed through Morgan Stanley Smith Barney LLC with an approximate date of 08/28/2025.

Has the filer sold any ALAB shares recently?

Yes. The filing reports a prior sale by Philip Mazzara of 7,237 shares on 08/18/2025 for gross proceeds of $1,328,064.80.

How many ALAB shares are outstanding according to the filing?

The issuer's reported number of shares outstanding in the filing is 166,219,140.