SEC Form 4
Xos, Inc. (XOS) insider trading
In the 12 months to Oct 26, 2026, 6 XOS insiders reported open-market sales of $2.9M across 21 filings; one director bought $10.6K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $2.9M
- 21 filings · 6 insiders
- Open-market purchases
- $10.6K
- 1 filing · George N. Mattson, Director
- Pre-arranged sales (10b5-1)
- 9 of 21
- $196.0K of $2.9M sold (7%)
Who traded XOS, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
XOS daily close from Oct 27, 2025 to Oct 26, 2026, between $1.61 and $7.46, last $2.64. 21 sale and 1 purchase filings by 7 insiders, marked at their filing dates. Emerald Green Trust, 10% owner: sold $2.2M across 2 filings, first filed Dec 9, 2025, last Jun 5, 2026. Giordano Sordoni, Chief Operating Officer: sold $197.5K across 1 filing, first filed Aug 24, 2026, last Aug 24, 2026. Dietmar Ostermann, Director: sold $189.2K across 7 filings, first filed Dec 22, 2025, last Sep 18, 2026. Stuart N. Bernstein, Director: sold $171.0K across 5 filings, first filed May 22, 2026, last Aug 20, 2026. Michael Paul Richardson, Director: sold $61.1K across 3 filings, first filed Dec 22, 2025, last Aug 27, 2026. Alice K. Jackson, Director: sold $53.5K across 3 filings, first filed Dec 30, 2025, last Aug 27, 2026. George N. Mattson, Director: bought $10.6K across 1 filing, first filed Sep 23, 2026, last Sep 23, 2026.
Largest mark · tap a row for others
Emerald Green Trust · 10% owner
Sale $2,195,007
400,000 shares at $5.49 avg
Filed Jun 5, 2026 · traded Jun 3
Close on filing date $4.74
Emerald Green Trust · 10% owner
10% owner
$2.2M soldGiordano Sordoni · Chief Operating Officer
Chief Operating Officer
$197.5K soldDietmar Ostermann · Director
Director
$189.2K soldStuart N. Bernstein · Director
Director
$171.0K soldMichael Paul Richardson · Director
Director
$61.1K soldAlice K. Jackson · Director
Director
$53.5K soldGeorge N. Mattson · Director
Director
$10.6K boughtOpen-market trades
22 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Emerald Green Trust | 10% owner | $2.2M | — | 2 | — | |
| Giordano Sordoni | Chief Operating Officer | $197.5K | — | 1 | — | |
| Dietmar Ostermann | Director | $189.2K | — | 7 | 43% of sales | |
| Stuart N. Bernstein | Director | $171.0K | — | 5 | — | |
| Michael Paul Richardson | Director | $61.1K | — | 3 | 100% of sales | |
| Alice K. Jackson | Director | $53.5K | — | 3 | 100% of sales | |
| George N. Mattson | Director | — | $10.6K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | George N. Mattson Director | Purchase | 4,062 | $2.60 | $10.6K | 196,408 | |
traded | Dietmar Ostermann Director | Sale | 5,000 | $2.55 | $12.7K | 85,226 | |
traded | Dietmar Ostermann Director | Sale | 15,000 | $3.01 | $45.2K | 90,226 | |
traded | Dietmar Ostermann Director | SalePre-arranged (10b5-1) | 12,475 | $2.41 | $30.1K | 127,702 | |
traded | Michael Paul Richardson Director | SalePre-arranged (10b5-1) | 9,357 | $2.41 | $22.6K | 138,491 | |
traded | Alice Yake Director | SalePre-arranged (10b5-1) | 7,500 | $2.41 | $18.1K | 160,061 | |
traded | Dietmar Ostermann Director | SalePre-arranged (10b5-1) | 12,476 | $2.20 | $27.5K | 115,226 | |
traded | Michael Paul Richardson Director | SalePre-arranged (10b5-1) | 9,356 | $2.21 | $20.7K | 129,135 | |
traded | Alice Yake Director | SalePre-arranged (10b5-1) | 7,500 | $2.21 | $16.5K | 152,561 | |
traded | Dietmar Ostermann Director | Sale | 10,000 | $3.49 | $34.9K | 105,226 | |
traded | Giordano Sordoni Chief Operating Officer | Sale | 49,370 | $4.00 | $197.5K | 1,553,458 | |
traded | Stuart N. Bernstein Director | Sale | 30,000 | $4.19 | $125.8K | 112,642 | |
traded | Stuart N. Bernstein Director | Sale | 2,000 | $2.89 | $5.8K | 82,058 | |
traded | Dietmar Ostermann Director | Sale | 3,351 | $4.45 | $14.9K | 79,593 | |
traded | Stuart N. Bernstein Director | Sale | 4,000 | $5.26 | $21.0K | 84,058 | |
traded | Emerald Green Trust 10% owner | Sale | 400,000 | $5.49 | $2.2M | 1,241,269 | |
traded | Stuart N. Bernstein Director | Sale | 5,179 | $1.64 | $8.5K | 92,979 | |
traded | Stuart N. Bernstein Director | Sale | 4,921 | $2.00 | $9.8K | 88,058 | |
traded | Alice K. Jackson Director | SalePre-arranged (10b5-1) | 10,000 | $1.89 | $18.9K | 103,485 | |
traded | Dietmar Ostermann Director | SalePre-arranged (10b5-1) | 11,478 | $2.08 | $23.8K | 82,944 | |
traded | Michael Paul Richardson Director | SalePre-arranged (10b5-1) | 8,608 | $2.08 | $17.9K | 87,264 | |
traded | Emerald Green Trust 10% owner | Sale | 12,983 | $2.52 | $32.7K | 1,561,229 |
GET /stocks/filings/vX/form-4?tickers=XOS&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"XOS"
],
"issuer_cik": "0001819493",
"owner_cik": "0001559238",
"accession_number": "0001193125-26-399359",
"form_type": "4",
"filing_date": "2026-09-23",
"period_of_report": "2026-09-21",
"issuer_name": "Xos, Inc.",
"issuer_trading_symbol": "XOS",
"owner_name": "Mattson George N",
"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": false,
"transaction_date": "2026-09-21",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 4062,
"transaction_price_per_share": 2.6,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 196408,
"transaction_value": 10561.2,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "Includes 60,584 unvested RSUs."
}
]
},
{
"tickers": [
"XOS"
],
"issuer_cik": "0001819493",
"owner_cik": "0001179705",
"accession_number": "0001193125-26-395667",
"form_type": "4",
"filing_date": "2026-09-18",
"period_of_report": "2026-09-16",
"issuer_name": "Xos, Inc.",
"issuer_trading_symbol": "XOS",
"owner_name": "OSTERMANN DIETMAR",
"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": false,
"transaction_date": "2026-09-16",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 262,
"transaction_price_per_share": 2.54,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 89964,
"transaction_value": 665.48,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "Includes 60,584 unvested RSUs."
}
]
}
]
}
// 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) · 74 records
- Tax withholding36 records
- Grants and awards16 records
- Gifts3 records
- Other19 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.
- Counted once
- When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.
Frequently asked questions
Has Xos, Inc.'s CEO sold stock?
No. Dakota Semler (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is XOS’s insider data?
These are XOS 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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Track XOS insider trades with your agent
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 XOS 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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