SEC Form 4
Clene Inc. (CLNN) insider trading
In the 12 months to Oct 26, 2026, one CLNN insider reported open-market sales of $5.8M across 22 filings; one director bought $216.7K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $5.8M
- 22 filings · 1 insider
- Open-market purchases
- $216.7K
- 1 filing · David J. Matlin, Director
Who traded CLNN, and when
- Purchase
- Sale
CLNN daily close from Oct 27, 2025 to Oct 26, 2026, between $3.10 and $12.50, last $3.82. 22 sale and 1 purchase filings by 2 insiders, marked at their filing dates. Chidozie Ugwumba, 10% owner: sold $5.8M across 22 filings, first filed Dec 18, 2025, last May 13, 2026. David J. Matlin, Director: bought $216.7K across 1 filing, first filed Jan 13, 2026, last Jan 13, 2026.
Largest mark · tap a row for others
Chidozie Ugwumba · 10% owner
Filing 1 of 2 within a week · $1,790,299 total
Sale $1,725,735
257,795 shares at $6.69 avg
Filed Dec 18, 2025 · traded Dec 3
Close on filing date $6.04
Chidozie Ugwumba · 10% owner
10% owner
$5.8M soldDavid J. Matlin · Director
Director
$216.7K boughtOpen-market trades
23 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Chidozie Ugwumba | 10% owner | $5.8M | — | 22 | — | |
| David J. Matlin | Director | — | $216.7K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Chidozie Ugwumba 10% owner | Sale | 95,473 | $6.33 | $604.1K | 103,417 | |
traded | Chidozie Ugwumba 10% owner | Sale | 78,679 | $6.74 | $530.4K | 198,890 | |
traded | Chidozie Ugwumba 10% owner | Sale | 19,497 | $5.78 | $112.8K | 277,569 | |
traded | Chidozie Ugwumba 10% owner | Sale | 65,663 | $6.14 | $403.1K | 297,066 | |
traded | Chidozie Ugwumba 10% owner | Sale | 39,162 | $6.43 | $251.9K | 362,729 | |
traded | Chidozie Ugwumba 10% owner | Sale | 24,925 | $4.81 | $119.9K | 401,891 | |
traded | Chidozie Ugwumba 10% owner | Sale | 4,278 | $4.97 | $21.3K | 426,816 | |
traded | Chidozie Ugwumba 10% owner | Sale | 100,997 | $4.89 | $494.0K | Multiple accounts | |
traded | Chidozie Ugwumba 10% owner | Sale | 17,909 | $5.56 | $99.5K | 532,091 | |
traded | Chidozie Ugwumba 10% owner | Sale | 5,559 | $4.10 | $22.8K | 550,000 | |
traded | Chidozie Ugwumba 10% owner | Sale | 24,770 | $4.23 | $104.9K | Multiple accounts | |
traded | Chidozie Ugwumba 10% owner | Sale | 19,274 | $4.98 | $96.0K | Multiple accounts | |
traded | Chidozie Ugwumba 10% owner | Sale | 18,221 | $5.30 | $96.7K | 599,603 | |
traded | Chidozie Ugwumba 10% owner | Sale | 32,474 | $4.97 | $161.5K | 617,824 | |
traded | Chidozie Ugwumba 10% owner | Sale | 58,289 | $5.01 | $292.2K | 650,298 | |
traded | David J. Matlin Director | Purchase | 33,333 | $6.50 | $216.7K | 477,824 | |
traded | Chidozie Ugwumba 10% owner | Sale | 44,975 | $5.70 | $256.2K | 708,587 | |
traded | Chidozie Ugwumba 10% owner | Sale | 12,918 | $6.04 | $78.0K | 753,562 | |
traded | Chidozie Ugwumba 10% owner | Sale | 17,110 | $5.79 | $99.1K | 766,480 | |
traded | Chidozie Ugwumba 10% owner | Sale | 12,234 | $5.98 | $73.1K | 783,590 | |
traded | Chidozie Ugwumba 10% owner | Sale | 11,671 | $6.28 | $73.3K | 795,824 | |
traded | Chidozie Ugwumba 10% owner | Sale | 9,949 | $6.49 | $64.6K | 383,201 | |
traded | Chidozie Ugwumba 10% owner | Sale | 257,795 | $6.69 | $1.7M | 393,150 |
GET /stocks/filings/vX/form-4?tickers=CLNN&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"CLNN"
],
"issuer_cik": "0001822791",
"owner_cik": "0001835544",
"accession_number": "0001835544-26-000019",
"form_type": "4",
"filing_date": "2026-05-13",
"period_of_report": "2013-05-11",
"issuer_name": "Clene Inc.",
"issuer_trading_symbol": "CLNN",
"owner_name": "Ugwumba Chidozie",
"is_director": false,
"is_officer": false,
"is_ten_percent_owner": true,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-11",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 22177,
"transaction_price_per_share": 6.75,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 176713,
"transaction_value": 149694.75,
"not_subject_to_section_16": true,
"direct_or_indirect": "I",
"nature_of_ownership": "By SymBiosis II, LLC",
"remarks": "As a result of the transaction reported within this Form 4, the Reporting Person's beneficial ownership has fallen below 10% of the outstanding shares of Common Stock of the Issuer. Accordingly, the Reporting Person is no longer subject to Section 16 of the Securities Exchange Act of 1934 with respect to the Issuer."
},
{
"tickers": [
"CLNN"
],
"issuer_cik": "0001822791",
"owner_cik": "0001835544",
"accession_number": "0001835544-26-000019",
"form_type": "4",
"filing_date": "2026-05-13",
"period_of_report": "2013-05-11",
"issuer_name": "Clene Inc.",
"issuer_trading_symbol": "CLNN",
"owner_name": "Ugwumba Chidozie",
"is_director": false,
"is_officer": false,
"is_ten_percent_owner": true,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-12",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 73296,
"transaction_price_per_share": 6.2,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 103417,
"transaction_value": 454435.2,
"not_subject_to_section_16": true,
"direct_or_indirect": "I",
"nature_of_ownership": "By SymBiosis II, LLC",
"remarks": "As a result of the transaction reported within this Form 4, the Reporting Person's beneficial ownership has fallen below 10% of the outstanding shares of Common Stock of the Issuer. Accordingly, the Reporting Person is no longer subject to Section 16 of the Securities Exchange Act of 1934 with respect to the Issuer."
}
]
}
// 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) · 6 records
- Grants and awards4 records
- Other2 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.
- 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 Clene Inc.'s CEO sold stock?
No. Robert Dee Etherington (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is CLNN’s insider data?
These are CLNN 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 CLNN 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 CLNN 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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