Astera Labs, Inc. (ALAB) Shareholders & Insider Trades
Astera Labs shareholders at a glance
The largest holder of Astera Labs stock is Fidelity Management & Research Co. LLC, with 24.8 million shares (14.32% of the company), worth about $7.38 billion as of September 25, 2026. The 10 largest holders together own 51.9%.
In Q2 2026, 1,078 institutional holdings reports listed shares worth $64.10 billion.
Insiders reported 48 transactions in the last two years: 33 sales worth $365.40 million and no purchases. The newest one on file is from October 1, 2025 (Mazzara Philip, General Counsel).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through October 1, 2025.
Astera Labs, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Astera Labs shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Fidelity Management & Research Co. LLC | 24.8 million | 14.32% | $7.4B |
| Sutter Hill Ventures LLC | 13.0 million | 7.51% | $3.9B |
| BlackRock Advisors LLC | 11.1 million | 6.37% | $3.3B |
| Vanguard Portfolio Management LLC | 7.9 million | 4.55% | $2.3B |
| Sanjay Gajendra4.404 % | 7.6 million | 4.40% | $2.3B |
| Jitendra Mohan4.295 % | 7.5 million | 4.29% | $2.2B |
| Vanguard Capital Management LLC | 6.7 million | 3.88% | $2.0B |
| Invesco Advisers, Inc. | 4.9 million | 2.83% | $1.5B |
| State Street Corporation | 3.7 million | 2.12% | $1.1B |
| Geode Capital Management LLC | 2.8 million | 1.61% | $830.0M |
As of September 25, 2026.
Astera Labs institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,078 | – | $64.1B |
| Q1 2026 | 767 | 121.0 million | $13.4B |
| Q4 2025 | 764 | 117.0 million | $19.5B |
| Q3 2025 | 736 | 112.0 million | $21.9B |
| Q2 2025 | 572 | 105.0 million | $9.5B |
| Q1 2025 | 441 | 98.4 million | $5.9B |
| Q4 2024 | 473 | 94.7 million | $12.5B |
| Q3 2024 | 291 | 75.8 million | $4.0B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Astera Labs insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Mazzara Philip | Oct 1, 2025 | General Counsel | Sale at price 187.21 - 195.66 per share. | $1.9M |
| Tate Michael Truett | Sep 11, 2025 | Chief Financial Officer | Stock Gift at price 0.00 per share. | – |
| Gajendra Sanjay | Sep 2, 2025 | President | Stock Gift at price 0.00 per share. | – |
| Alba Manuel | Sep 2, 2025 | Director | Sale at price 168.23 - 180.10 per share. | $31.7M |
| Mazzara Philip | Aug 28, 2025 | General Counsel | Sale at price 182.55 - 190.50 per share. | $1.9M |
| Lazar Jack R | Aug 27, 2025 | Director | Sale at price 176.73 - 183.09 per share. | $4.0M |
| Mohan Jitendra | Aug 20, 2025 | Chief Executive Officer | Stock Gift at price 0.00 per share. | – |
| Tate Michael Truett | Aug 19, 2025 | Chief Financial Officer | Stock Gift at price 0.00 per share. | – |
| Mohan Jitendra | Aug 18, 2025 | Chief Executive Officer | Sale at price 183.17 - 183.83 per share. | $16.8M |
| Tate Michael Truett | Aug 18, 2025 | Chief Financial Officer | Sale at price 183.17 - 183.83 per share. | $3.5M |
| Gajendra Sanjay | Aug 18, 2025 | President | Sale at price 183.17 - 183.83 per share. | $16.8M |
| Mazzara Philip | Aug 18, 2025 | General Counsel | Sale at price 183.17 - 183.83 per share. | $1.3M |
Newest 12 of 48 insider transactions in the last two years.
Questions and answers
Who owns the most Astera Labs stock?
Fidelity Management & Research Co. LLC, with 14.32% of the company (as of September 25, 2026). Next: Sutter Hill Ventures LLC (7.51%) and BlackRock Advisors LLC (6.37%).
How many institutions own Astera Labs stock?
1,078 institutional holdings reports listed Astera Labs shares in Q2 2026 worth $64.10 billion.
Are Astera Labs insiders buying or selling the stock?
In the last two years insiders reported 33 sales and no purchases (48 transactions in all); the newest on file is from October 1, 2025.
