Transaction · 0001998163-26-000022
ALABAstera Labs, Inc.
Mazzara Philip
Mazzara Philip, GC, SECY, reported an open-market or private sale at Astera Labs, Inc. involving 44.000000 shares for an estimated $15492.52. Reported holdings after the transaction were 103299.000000 shares. A 10b5-1 reference was not detected in the stored filing text.
Open-market sellSEC transaction code SGC, SECY
- Trade date
- Aug 17, 2026
- Filing date
- Aug 19, 2026
How reported position traded is calculated
Shares sold ÷ (holdings after + shares sold). Estimated position before: 103,343 shares.
Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.
ALAB price since this filing
Daily closing prices, with the filing date and available return windowsALAB · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +5.1%1w ago +9.8%1d ago +11.3%
Returns since7d +0.4%30d +4.9%90d180d1y
Transaction facts
Stored Form 4 columns with their raw values
- Type
- Sell Code S
- Identifier
- 0001998163-26-000022 Common Stock
- Transaction date
- Aug 17, 2026 Filed Aug 19, 2026, 10:11 PM · 2d delay
- Shares
- 44 sh $352.10 per share
- Estimated value
- -$15.4k Computed from shares × price
- Holdings after
- 103,299 sh Direct
Filing signal explanations
Badges describe filing facts only — not predictions.
Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Direct Ownership
Filing-only score
+10 points
Compact filing score computed from stored Form 4 facts. Version v1.
Positive filing signal
This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.
How this score is calculated
- direct_ownership+6 points
direct_or_indirect_ownership = D
Direct ownership reports the insider's personal stake. - timely_filing+4 points
reporting_delay_days = 2
Filing reported within two business days of the transaction.
Signed filing-only points, not a probability or expected return. Version v1.
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
- F1
Represents shares of the Issuer's Common Stock required to be sold by the Reporting Person to satisfy tax withholding obligations in connection with the vesting and settlement of restricted stock unit…
- F2
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $35…
- F3
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $35…
- F4
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F5
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F6
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F7
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F8
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F9
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F10
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F11
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F12
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $34…
- F13
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $33…
- F14
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $33…
- F15
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $33…
- F16
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $33…
- F17
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $33…
- F18
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $33…
- F19
The price reported in Column 4 is a weighted average price. The shares were sold as part of block trades for multiple security holders of the Issuer in multiple transactions at prices ranging from $33…
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