Transaction · 0001998163-26-000001

Mazzara Philip

Mazzara Philip, GC, SECY, reported an open-market or private sale at Astera Labs, Inc. involving 1300.000000 shares for an estimated $235275.95. Reported holdings after the transaction were 137240.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SGC, SECY
ALABAstera Labs, Inc.
Filing timeJan 06
Trade dateJan 02, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
Pre-filing
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ALAB price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
ALAB since 2026-01-06Filed 241 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001998163-26-000001
Common Stock
Transaction date
Jan 02, 2026
Filed Jan 06, 2026, 09:12 PM · 4d delay
Shares
1.30k sh
$18.0k per share
Estimated value
-$23.5M
Computed from shares × price
Holdings after
137k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership Repeat Seller 10b5-1 Detected
-4score
Filing-only score

-4

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

General Counsel and Secretary

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    The sales reported in this Form 4 occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 29, 2025.

  2. F2

    The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $173.6900 to $174.6700, inclusive. The Reporting Person undertakes

  3. (8 footnotes)

    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 sep…

  4. (8 footnotes)

    price within the range set forth in this footnote.

  5. F3

    The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $174.7000 to $175.4500, inclusive. The Reporting Person undertakes

  6. F4

    The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $176.5100 to $177.4900, inclusive. The Reporting Person undertakes

  7. F5

    The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $177.5900 to $178.5700, inclusive. The Reporting Person undertakes

  8. F6

    The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $178.6600 to $179.5900, inclusive. The Reporting Person undertakes

  9. F7

    The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $179.6600 to $180.2600, inclusive. The Reporting Person undertakes

  10. F8

    The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $180.6600 to $181.4900, inclusive. The Reporting Person undertakes

  11. F9

    The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $181.7500 to $182.4900, inclusive. The Reporting Person undertakes

Original filing · 0001998163-26-000001
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