SEC Form 4
Archer Aviation Inc. (ACHR) insider trading
In the 12 months to Oct 26, 2026, 5 ACHR insiders reported open-market sales of $4.0M across 13 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $4.0M
- 13 filings · 5 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 4 of 13
- $2.4M of $4.0M sold (60%)
Who traded ACHR, and when
- Sale
- Sale, pre-arranged (10b5-1)
ACHR daily close from Oct 27, 2025 to Oct 26, 2026, between $3.80 and $11.34, last $3.94. 13 sale and 0 purchase filings by 5 insiders, marked at their filing dates. Thomas Paul Muniz, CHIEF TECHNOLOGY OFFICER: sold $1.7M across 3 filings, first filed Nov 18, 2025, last Mar 16, 2026. Eric Lentell, Chief Legal & Strategy Officer → Chief Strategy Officer: sold $1.5M across 5 filings, first filed Nov 18, 2025, last Aug 21, 2026. Tosha Perkins, CHIEF PEOPLE PARTNERSHIPS OFF. → CHIEF ADMINISTRATIVE OFFICER: sold $406.1K across 2 filings, first filed Nov 18, 2025, last Mar 16, 2026. Benjamin Lyon, President, Aircraft OEM: sold $246.3K across 1 filing, first filed Sep 23, 2026, last Sep 23, 2026. Priya Gupta, Interim CFO: sold $86.6K across 2 filings, first filed Nov 18, 2025, last Mar 16, 2026.
Largest mark · tap a row for others
Thomas Paul Muniz · CHIEF TECHNOLOGY OFFICER
Sale $1,000,000
125,000 shares at $8.00 avg
Filed Jan 6, 2026 · traded Jan 2
Pre-arranged (10b5-1) · close on filing date $8.82
Thomas Paul Muniz · CHIEF TECHNOLOGY OFFICER
CHIEF TECHNOLOGY OFFICER
$1.7M soldEric Lentell · Chief Legal & Strategy Officer → Chief Strategy Officer
Chief Legal & Strategy Officer → Chief Strategy Officer
$1.5M soldTosha Perkins · CHIEF PEOPLE PARTNERSHIPS OFF. → CHIEF ADMINISTRATIVE OFFICER
CHIEF PEOPLE PARTNERSHIPS OFF. → CHIEF ADMINISTRATIVE OFFICER
$406.1K soldBenjamin Lyon · President, Aircraft OEM
President, Aircraft OEM
$246.3K soldPriya Gupta · Interim CFO
Interim CFO
$86.6K soldOpen-market trades
13 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Thomas Paul Muniz | CHIEF TECHNOLOGY OFFICER | $1.7M | — | 3 | 57% of sales | |
| Eric Lentell | Chief Legal & Strategy Officer → Chief Strategy Officer | $1.5M | — | 5 | 75% of sales | |
| Tosha Perkins | CHIEF PEOPLE PARTNERSHIPS OFF. → CHIEF ADMINISTRATIVE OFFICER | $406.1K | — | 2 | — | |
| Benjamin Lyon | President, Aircraft OEM | $246.3K | — | 1 | 100% of sales | |
| Priya Gupta | Interim CFO | $86.6K | — | 2 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Benjamin Lyon President, Aircraft OEM | SalePre-arranged (10b5-1) | 45,359 | $5.43 | $246.3K | 0 | |
traded | Eric Lentell Chief Strategy Officer | SalePre-arranged (10b5-1) | 100,000 | $6.31 | $631.0K | 85,011 | |
traded | Eric Lentell Chief Legal & Strategy Officer | Sale | 3,754 | $5.00 | $18.8K | 137,330 | |
traded | Eric Lentell Chief Legal & Strategy Officer | SalePre-arranged (10b5-1) | 100,000 | $5.33 | $533.0K | 50,119 | |
traded | Tosha Perkins CHIEF ADMINISTRATIVE OFFICER | Sale | 10,949 | $6.27 | $68.7K | 384,768 | |
traded | Thomas Paul Muniz CHIEF TECHNOLOGY OFFICER | Sale | 9,580 | $6.27 | $60.1K | 1,352,208 | |
traded | Eric Lentell Chief Legal & Strategy Officer | Sale | 8,059 | $6.27 | $50.6K | 150,119 | |
traded | Priya Gupta Interim CFO | Sale | 7,263 | $6.27 | $45.6K | 178,512 | |
traded | Thomas Paul Muniz CHIEF TECHNOLOGY OFFICER | SalePre-arranged (10b5-1) | 125,000 | $8.00 | $1.0M | 1,272,129 | |
traded | Tosha Perkins CHIEF PEOPLE PARTNERSHIPS OFF. | Sale | 45,018 | $7.49 | $337.4K | 334,632 | |
traded | Thomas Paul Muniz CHIEF TECHNOLOGY OFFICER | Sale | 90,648 | $7.49 | $679.4K | 1,397,129 | |
traded | Eric Lentell Chief Legal & Strategy Officer | Sale | 41,490 | $7.49 | $311.0K | 83,733 | |
traded | Priya Gupta Interim CFO | Sale | 5,479 | $7.49 | $41.1K | 161,523 |
GET /stocks/filings/vX/form-4?tickers=ACHR&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"ACHR"
],
"issuer_cik": "0001824502",
"owner_cik": "0001870608",
"accession_number": "0001870608-26-000012",
"form_type": "4",
"filing_date": "2026-09-23",
"period_of_report": "2026-09-21",
"issuer_name": "Archer Aviation Inc.",
"issuer_trading_symbol": "ACHR",
"owner_name": "Lyon Benjamin",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "President, Aircraft OEM",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-09-21",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 45359,
"transaction_price_per_share": 5.43,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 0,
"transaction_value": 246299.37,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 21, 2026."
}
]
},
{
"tickers": [
"ACHR",
"ACHR.WS"
],
"issuer_cik": "0001824502",
"owner_cik": "0002016416",
"accession_number": "0002016416-26-000022",
"form_type": "4",
"filing_date": "2026-08-21",
"period_of_report": "2026-08-20",
"issuer_name": "Archer Aviation Inc.",
"issuer_trading_symbol": "ACHR",
"owner_name": "Lentell Eric",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Strategy Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-08-20",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 100000,
"transaction_price_per_share": 6.31,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 85011,
"transaction_value": 631000,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026."
},
{
"id": "F2",
"description": "Following the reported transaction, in addition to the 85,011 shares of Class A Common Stock beneficially owned by the reporting person, the reporting person held restricted stock units representing contingent rights to receive up to an aggregate 435,687 shares of the Issuer's Class A Common Stock, which restricted stock units are subject to service-based vesting schedules and vest according to their respective terms."
}
]
}
]
}
// 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) · 86 records
- Option exercises65 records
- Tax withholding (sold to cover)15 records
- Grants and awards6 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.
- Role
- The title on each filing. Someone whose title changed shows more than one.
- 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 Archer Aviation Inc.'s CEO sold stock?
No. Adam D. Goldstein (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is ACHR’s insider data?
These are ACHR 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 ACHR 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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