Astera Labs, Inc.
ALAB- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001736297
In the last 90 days, Astera Labs, Inc. insiders filed 0 open-market purchases and 10 sales; 993 institutions reported holding it in 13F filings for Q2 2026, worth $61.2B in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of ALAB
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Astera Labs, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Vanguard Group Inc | 13G/A | 7.30%12.0M shares | +1.50 ppfrom 5.80% | Jan 30, 20252 filings | Jul 29, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
5 Schedule 13D and 13G filings on Astera Labs, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 13, 20253:50 PM ET | Alliancebernstein L.P. | 13G/A | 3.90%6.39M shares | −1.30 ppfrom 5.20%Below 5% | Jun 30, 2025 | SEC |
| Jul 29, 202511:20 AM ET | Vanguard Group Inc | 13G/A | 7.30%12.0M shares | +1.50 ppfrom 5.80% | Jun 30, 2025 | SEC |
| May 14, 20255:22 PM ET | Alliancebernstein L.P. | 13G | 5.20%8.40M shares | New | Mar 31, 2025 | SEC |
| Feb 14, 20254:04 PM ET | Atreides Management, LPand 2 others | 13G/A | 1.20%1.84M shares | –Below 5% | Dec 31, 2024 | SEC |
| Jan 30, 20259:35 PM ET | Vanguard Group Inc | 13G | 5.80%9.21M shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Astera Labs, Inc. shares.
No Form 144 notices for Astera Labs, Inc. are on file.