ALAB
Astera Labs, Inc.
303.30$
+3.3%
vs. previous close
Closing price · As of: Sep 18, 2026
Ownership
Ownership Structure
Who owns Astera Labs, Inc. (ALAB)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 89.9% of the shares are freely tradable; institutional investors hold 73.0%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
73.0%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
10.7%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
89.9%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
6.8%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
174Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 14.72 | 25,529,885 | +0.8 | 03/31/2026 |
| BlackRock Inc | 6.60 | 11,449,769 | -11.7 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.21 | 7,309,778 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.65 | 6,340,732 | +0.0 | 03/31/2026 |
| State Street Corp | 1.92 | 3,333,606 | +7.5 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Select Semiconductors | 4.52 | 7,846,949 | -0.3 | 07/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.83 | 4,912,168 | +0.3 | 07/31/2026 |
| Invesco QQQ Trust | 2.13 | 3,687,383 | +0.5 | 08/31/2026 |
| iShares Semiconductor ETF | 1.89 | 3,272,522 | -0.2 | 08/31/2026 |
| Fidelity Blue Chip Growth Composite | 1.50 | 2,596,970 | +0.0 | 03/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Alba Manuel | Director | 1,378,361 | 418,056,891 $ | Sep 1, 2026 | indirect |
| Mohan Jitendra | Chief Executive Officer | 1,266,665 | 384,179,495 $ | Aug 17, 2026 | direct |
| Gajendra Sanjay | President and COO | 1,119,038 | 339,404,225 $ | Aug 17, 2026 | direct |
| Dyckerhoff Stefan A | Director | 348,498 | 105,699,443 $ | Sep 2, 2026 | both |
| Mazzara Philip | General Counsel and Secretary | 96,542 | 29,281,189 $ | Aug 17, 2026 | direct |
| Cota Germaine | Chief Accting. Off. & VP, Fin. | 26,440 | 8,019,252 $ | Jul 20, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 32 | 276.75 | 8,856 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 407 | 276.75 | 112,638 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 172 | 276.75 | 47,601 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 148 | 275.53 | 40,779 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 1,867 | 275.53 | 514,420 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 785 | 275.53 | 216,293 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 429 | 274.79 | 117,884 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 5,409 | 274.79 | 1,486,334 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 2,275 | 274.79 | 625,145 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 52 | 273.64 | 14,229 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 650 | 273.64 | 177,868 |
| Sep 2, 2026 | Dyckerhoff Stefan A | Director | Sell | 273 | 273.64 | 74,705 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 196 | 288.95 | 56,635 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 225 | 287.93 | 64,785 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 588 | 287.00 | 168,754 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 74 | 285.18 | 21,103 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 491 | 284.18 | 139,530 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 868 | 283.18 | 245,804 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 1,288 | 282.13 | 363,381 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 2,835 | 281.16 | 797,083 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 13,070 | 280.04 | 3,660,101 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 8,179 | 279.28 | 2,284,234 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 4,618 | 278.33 | 1,285,320 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 568 | 277.32 | 157,517 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 892 | 288.95 | 257,747 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 1,019 | 287.93 | 293,405 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 2,677 | 286.99 | 768,284 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 340 | 285.18 | 96,960 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 2,245 | 284.17 | 637,973 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 3,954 | 283.19 | 1,119,713 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 5,870 | 282.13 | 1,656,093 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 12,882 | 281.16 | 3,621,877 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 59,379 | 280.04 | 16,628,388 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 37,176 | 279.28 | 10,382,521 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 20,991 | 278.33 | 5,842,387 |
| Sep 1, 2026 | Alba Manuel | Director | Sell | 2,575 | 277.32 | 714,100 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 12,608 | 333.60 | 4,206,024 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 6,926 | 334.23 | 2,314,849 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 1,782 | 335.41 | 597,709 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 2,946 | 336.65 | 991,767 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 10,438 | 337.76 | 3,525,531 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 7,992 | 338.58 | 2,705,931 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 6,484 | 339.74 | 2,202,903 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 2,616 | 340.58 | 890,954 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 1,610 | 341.71 | 550,149 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 5,449 | 342.95 | 1,868,744 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 3,713 | 343.94 | 1,277,032 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 17,373 | 344.99 | 5,993,588 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 2,525 | 346.13 | 873,972 |
| Aug 17, 2026 | Gajendra Sanjay | President and COO | Sell | 3,500 | 347.01 | 1,214,551 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.