SEC Form 4
Astera Labs, Inc. (ALAB) insider trading
In the 12 months to Oct 26, 2026, 7 ALAB insiders reported open-market sales of $621.9M across 34 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $621.9M
- 34 filings · 7 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 32 of 34
- $619.5M of $621.9M sold (100%)
Who traded ALAB, and when
- Sale
- Sale, pre-arranged (10b5-1)
ALAB daily close from Oct 27, 2025 to Oct 26, 2026, between $100.27 and $483.02, last $265.49. 34 sale and 0 purchase filings by 7 insiders, marked at their filing dates. Sanjay Gajendra, President and COO: sold $241.4M across 4 filings, first filed May 11, 2026, last May 26, 2026. Manuel Alba, Director: sold $182.6M across 7 filings, first filed Dec 3, 2025, last Sep 3, 2026. Jitendra Mohan, Chief Executive Officer: sold $156.9M across 6 filings, first filed Mar 19, 2026, last May 20, 2026. Stefan A. Dyckerhoff, Director: sold $29.1M across 7 filings, first filed Apr 21, 2026, last Oct 9, 2026. Philip Mazzara, General Counsel and Secretary: sold $6.4M across 5 filings, first filed Jan 6, 2026, last May 26, 2026. Jack R. Lazar, Director: sold $5.1M across 4 filings, first filed Nov 21, 2025, last Jun 8, 2026. Bethany Mayer, Director: sold $271.0K across 1 filing, first filed Jun 26, 2026, last Jun 26, 2026.
Largest mark · tap a row for others
Sanjay Gajendra · President and COO
Filing 1 of 2 within a week · $185,893,981 total
Sale $69,774,014
280,000 shares at $249.19 avg
Filed May 21, 2026 · traded May 19
Pre-arranged (10b5-1) · close on filing date $297.84
Sanjay Gajendra · President and COO
President and COO
$241.4M soldManuel Alba · Director
Director
$182.6M soldJitendra Mohan · Chief Executive Officer
Chief Executive Officer
$156.9M soldStefan A. Dyckerhoff · Director
Director
$29.1M soldPhilip Mazzara · General Counsel and Secretary
General Counsel and Secretary
$6.4M soldJack R. Lazar · Director
Director
$5.1M soldBethany Mayer · Director
Director
$271.0K soldOpen-market trades
34 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Sanjay Gajendra | President and COO | $241.4M | — | 4 | 100% of sales | |
| Manuel Alba | Director | $182.6M | — | 7 | 100% of sales | |
| Jitendra Mohan | Chief Executive Officer | $156.9M | — | 6 | 100% of sales | |
| Stefan A. Dyckerhoff | Director | $29.1M | — | 7 | 100% of sales | |
| Philip Mazzara | General Counsel and Secretary | $6.4M | — | 5 | 63% of sales | |
| Jack R. Lazar | Director | $5.1M | — | 4 | 100% of sales | |
| Bethany Mayer | Director | $271.0K | — | 1 | 100% of sales |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Stefan A. Dyckerhoff Director | SalePre-arranged (10b5-1) | 12,499 | $376.06 | $4.7M | Multiple accounts | |
traded | Manuel Alba Director | SalePre-arranged (10b5-1) | 183,000 | $280.13 | $51.3M | Multiple accounts | |
traded | Stefan A. Dyckerhoff Director | SalePre-arranged (10b5-1) | 12,499 | $274.96 | $3.4M | Multiple accounts | |
traded | Stefan A. Dyckerhoff Director | SalePre-arranged (10b5-1) | 12,499 | $311.83 | $3.9M | Multiple accounts | |
traded | Manuel Alba Director | SalePre-arranged (10b5-1) | 136,974 | $442.01 | $60.5M | 1,291,361 | |
traded | Manuel Alba Director | SalePre-arranged (10b5-1) | 37,535 | $447.39 | $16.8M | Multiple accounts | |
traded | Manuel Alba Director | SalePre-arranged (10b5-1) | 8,491 | $458.38 | $3.9M | 290,572 | |
traded | Stefan A. Dyckerhoff Director | SalePre-arranged (10b5-1) | 12,499 | $450.00 | $5.6M | Multiple accounts | |
traded | Bethany Mayer Director | SalePre-arranged (10b5-1) | 686 | $395.04 | $271.0K | 6,137 | |
traded | Jack R. Lazar Director | SalePre-arranged (10b5-1) | 10,000 | $355.17 | $3.6M | 81,079 | |
traded | Stefan A. Dyckerhoff Director | SalePre-arranged (10b5-1) | 12,499 | $364.35 | $4.6M | Multiple accounts | |
traded | Philip Mazzara General Counsel and Secretary | Sale | 796 | $291.03 | $231.7K | 103,343 | |
traded | Sanjay Gajendra President and COO | SalePre-arranged (10b5-1) | 400,000 | $290.30 | $116.1M | 5,116,910 | |
traded | Sanjay Gajendra President and COO | SalePre-arranged (10b5-1) | 280,000 | $249.19 | $69.8M | Multiple accounts | |
traded | Jitendra Mohan Chief Executive Officer | SalePre-arranged (10b5-1) | 139,951 | $223.61 | $31.3M | 3,789,232 | |
traded | Philip Mazzara General Counsel and Secretary | Sale | 9,204 | $235.36 | $2.2M | 109,011 | |
traded | Stefan A. Dyckerhoff Director | SalePre-arranged (10b5-1) | 12,499 | $200.03 | $2.5M | Multiple accounts | |
traded | Jitendra Mohan Chief Executive Officer | SalePre-arranged (10b5-1) | 139,951 | $200.16 | $28.0M | 3,930,143 | |
traded | Sanjay Gajendra President and COO | SalePre-arranged (10b5-1) | 230,639 | $198.22 | $45.7M | Multiple accounts | |
traded | Sanjay Gajendra President and COO | SalePre-arranged (10b5-1) | 49,361 | $199.21 | $9.8M | Multiple accounts | |
traded | Stefan A. Dyckerhoff Director | SalePre-arranged (10b5-1) | 24,998 | $175.06 | $4.4M | Multiple accounts | |
traded | Jitendra Mohan Chief Executive Officer | SalePre-arranged (10b5-1) | 335,881 | $172.24 | $57.9M | 4,069,134 | |
traded | Jitendra Mohan Chief Executive Officer | SalePre-arranged (10b5-1) | 2,967 | $174.60 | $518.0K | 4,405,015 | |
traded | Jitendra Mohan Chief Executive Officer | SalePre-arranged (10b5-1) | 123,750 | $149.68 | $18.5M | 4,432,709 | |
traded | Manuel Alba Director | SalePre-arranged (10b5-1) | 183,000 | $107.61 | $19.7M | Multiple accounts | |
traded | Philip Mazzara General Counsel and Secretary | SalePre-arranged (10b5-1) | 10,000 | $107.77 | $1.1M | 124,984 | |
traded | Jitendra Mohan Chief Executive Officer | SalePre-arranged (10b5-1) | 157,500 | $131.58 | $20.7M | 4,652,081 | |
traded | Jack R. Lazar Director | SalePre-arranged (10b5-1) | 2,500 | $130.00 | $325.0K | 84,851 | |
traded | Jack R. Lazar Director | SalePre-arranged (10b5-1) | 7,500 | $119.80 | $898.5K | 87,848 | |
traded | Philip Mazzara General Counsel and Secretary | SalePre-arranged (10b5-1) | 10,000 | $117.47 | $1.2M | 131,052 | |
traded | Philip Mazzara General Counsel and Secretary | SalePre-arranged (10b5-1) | 10,000 | $178.41 | $1.8M | 146,940 | |
traded | Manuel Alba Director | SalePre-arranged (10b5-1) | 150,000 | $166.18 | $24.9M | 1,716,762 | |
traded | Manuel Alba Director | SalePre-arranged (10b5-1) | 33,000 | $166.18 | $5.5M | 376,698 | |
traded | Jack R. Lazar Director | SalePre-arranged (10b5-1) | 2,500 | $149.55 | $373.9K | 95,433 |
GET /stocks/filings/vX/form-4?tickers=ALAB&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"ALAB"
],
"issuer_cik": "0001736297",
"owner_cik": "0001484394",
"accession_number": "0001484394-26-000014",
"form_type": "4",
"filing_date": "2026-10-09",
"period_of_report": "2026-10-01",
"issuer_name": "Astera Labs, Inc.",
"issuer_trading_symbol": "ALAB",
"owner_name": "Dyckerhoff Stefan A",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-07",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 3505,
"transaction_price_per_share": 376.06,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 47019,
"transaction_value": 1318090.3,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F3",
"description": "Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025."
},
{
"id": "F2",
"description": "Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares."
}
]
},
{
"tickers": [
"ALAB"
],
"issuer_cik": "0001736297",
"owner_cik": "0001484394",
"accession_number": "0001484394-26-000014",
"form_type": "4",
"filing_date": "2026-10-09",
"period_of_report": "2026-10-01",
"issuer_name": "Astera Labs, Inc.",
"issuer_trading_symbol": "ALAB",
"owner_name": "Dyckerhoff Stefan A",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-07",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 661,
"transaction_price_per_share": 376.06,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 2648,
"transaction_value": 248575.66,
"direct_or_indirect": "I",
"nature_of_ownership": "By Limited Partnership (TF)",
"footnotes": [
{
"id": "F3",
"description": "Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025."
},
{
"id": "F5",
"description": "Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 168 records
- Tax withholding (sold to cover)143 records
- Grants and awards19 records
- Gifts6 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Astera Labs, Inc.'s CEO sold stock?
Yes. Jitendra Mohan (CEO) sold 900,000 shares ($156.9M) between Mar 2026 and May 2026, all under a pre-arranged 10b5-1 plan.
How current is ALAB’s insider data?
These are ALAB Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for ALAB every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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