SEC Form 4
Star Bulk Carriers Corp. (SBLK) insider trading
In the 12 months to Oct 26, 2026, 7 SBLK insiders reported open-market sales of $8.4M across 17 filings; 9 insiders bought $6.9M.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $8.4M
- 17 filings · 7 insiders
- Open-market purchases
- $6.9M
- 10 filings
- Pre-arranged sales (10b5-1)
- 5 of 17
- $2.4M of $8.4M sold (28%)
$ excludes 2 trades without a price.
Who traded SBLK, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
SBLK daily close from Oct 27, 2025 to Oct 26, 2026, between $17.91 and $32.48, last $29.15. 17 sale and 10 purchase filings by 11 insiders, marked at their filing dates. Raffaele Zagari, Director: sold $3.6M and bought $1.7M across 6 filings, first filed Apr 1, 2026, last Oct 14, 2026. Nikolaos Reskos, COO → Chief Operating Officer: sold $2.6M and bought $282.7K across 7 filings, first filed Apr 16, 2026, last Sep 17, 2026. Alexandros Pappas, Other: bought $2.1M across 1 filing, first filed Sep 17, 2026, last Sep 17, 2026. Milena Maria Pappa, Director: bought $2.1M across 1 filing, first filed Sep 17, 2026, last Sep 17, 2026. Charis Plakantonaki, Chief Strategy Officer: sold $1.0M and bought $84.8K across 4 filings, first filed Apr 16, 2026, last Sep 17, 2026. Nikolaos Karellis, Director: sold $539.2K and bought $56.5K across 2 filings, first filed Jun 12, 2026, last Sep 16, 2026. Symeon Spyrou, co CFO: bought $424.1K across 1 filing, first filed Sep 16, 2026, last Sep 16, 2026. Koert Erhardt, Director: sold $182.3K and bought $169.6K across 2 filings, first filed Sep 16, 2026, last Oct 7, 2026. 3 others: sold $435.8K across 3 filings, first filed Aug 3, 2026, last Sep 22, 2026.
Largest mark · tap a row for others
Raffaele Zagari · Director
Filing 1 of 2 within a week · $3,095,000 total
Sale $1,535,000
50,000 shares at $30.70 avg
Filed Aug 25, 2026 · traded Aug 24
Close on filing date $31.11
Raffaele Zagari · Director
Director
$3.6M sold$1.7M boughtNikolaos Reskos · COO → Chief Operating Officer
COO → Chief Operating Officer
$2.6M sold$282.7K boughtAlexandros Pappas · Other
Other
$2.1M boughtMilena Maria Pappa · Director
Director
$2.1M boughtCharis Plakantonaki · Chief Strategy Officer
Chief Strategy Officer
$1.0M sold$84.8K boughtNikolaos Karellis · Director
Director
$539.2K sold$56.5K boughtSymeon Spyrou · co CFO
co CFO
$424.1K boughtKoert Erhardt · Director
Director
$182.3K sold$169.6K bought3 others
Combined, one mark per week
$435.8K soldOpen-market trades
27 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Raffaele Zagari | Director | $3.6M | $1.7M | 6 | — | |
| Nikolaos Reskos | COO → Chief Operating Officer | $2.6M | $282.7K | 7 | 91% of sales | |
| Alexandros Pappas | Other | — | $2.1M | 1 | — | |
| Milena Maria Pappa | Director | — | $2.1M | 1 | — | |
| Charis Plakantonaki | Chief Strategy Officer | $1.0M | $84.8K | 4 | — | |
| Nikolaos Karellis | Director | $539.2K | $56.5K | 2 | — | |
| Symeon Spyrou | co CFO | — | $424.1K | 1 | — | |
| Koert Erhardt | Director | $182.3K | $169.6K | 2 | — | |
| Mahesh Balakrishnan | Director | $323.4K | — | 1 | — | |
| Eleni Vrettou | Director | $112.4K | — | 1 | — | |
| Arne Blystad | Director | — | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Raffaele Zagari Director | Sale | 7,580 | $30.00 | $227.4K | 30,000 | |
traded | Raffaele Zagari Director | Purchase | 0 | — | — | 1,953,000 | |
traded | Koert Erhardt Director | Sale | 6,000 | $30.39 | $182.3K | 10,080 | |
traded | Mahesh Balakrishnan Director | Sale | 10,000 | $32.34 | $323.4K | 29,080 | |
traded | Eleni Vrettou Director | Sale | 3,500 | $32.12 | $112.4K | 73,686 | |
traded | Nikolaos Reskos Chief Operating Officer | Purchase | 10,000 | $28.27 | $282.7K | 410,875 | |
traded | Charis Plakantonaki Chief Strategy Officer | Purchase | 3,000 | $28.27 | $84.8K | 58,778 | |
traded | Raffaele Zagari Director | Purchase | 60,000 | $28.27 | $1.7M | Multiple accounts | |
traded | Alexandros Pappas Other | Purchase | 74,400 | $28.27 | $2.1M | 2,532,150 | |
traded | Milena Maria Pappa Director | Purchase | 74,400 | $28.27 | $2.1M | 3,167,074 | |
traded | Koert Erhardt Director | Purchase | 6,000 | $28.27 | $169.6K | 16,080 | |
traded | Symeon Spyrou co CFO | Purchase | 15,000 | $28.27 | $424.1K | 241,200 | |
traded | Nikolaos Karellis Director | Purchase | 2,000 | $28.27 | $56.5K | 9,580 | |
traded | Raffaele Zagari Director | Sale | 50,000 | $31.20 | $1.6M | 1,903,000 | |
traded | Raffaele Zagari Director | Sale | 50,000 | $30.70 | $1.5M | 1,953,000 | |
traded | Charis Plakantonaki Chief Strategy Officer | Sale | 10,825 | $29.82 | $322.8K | 55,778 | |
traded | Charis Plakantonaki Chief Strategy Officer | Sale | 10,825 | $28.95 | $313.4K | 66,603 | |
traded | Nikolaos Reskos Chief Operating Officer | SalePre-arranged (10b5-1) | 5,000 | $29.50 | $147.5K | 400,875 | |
traded | Nikolaos Reskos Chief Operating Officer | SalePre-arranged (10b5-1) | 5,000 | $28.99 | $145.0K | 405,875 | |
traded | Arne Blystad Director | Purchase | 7,580 | — | — | 115,533 | |
traded | Nikolaos Karellis Director | Sale | 20,000 | $26.96 | $539.2K | 0 | |
traded | Nikolaos Reskos Chief Operating Officer | SalePre-arranged (10b5-1) | 5,000 | $28.49 | $142.5K | 362,775 | |
traded | Nikolaos Reskos Chief Operating Officer | SalePre-arranged (10b5-1) | 39,914 | $27.11 | $1.1M | 367,775 | |
traded | Nikolaos Reskos Chief Operating Officer | SalePre-arranged (10b5-1) | 33,189 | $26.28 | $872.2K | 407,689 | |
traded | Nikolaos Reskos COO | Sale | 10,000 | $25.04 | $250.4K | 440,878 | |
traded | Charis Plakantonaki Chief Strategy Officer | Sale | 16,500 | $24.56 | $405.2K | 60,228 | |
traded | Raffaele Zagari Director | Sale | 11,500 | $22.75 | $261.7K | 20,000 |
GET /stocks/filings/vX/form-4?tickers=SBLK&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"SBLK"
],
"issuer_cik": "0001386716",
"owner_cik": "0002005037",
"accession_number": "0002005037-26-000016",
"form_type": "4/A",
"filing_date": "2026-10-14",
"period_of_report": "2026-10-13",
"issuer_name": "Star Bulk Carriers Corp.",
"issuer_trading_symbol": "SBLK",
"owner_name": "Zagari Raffaele",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common shares, par value $0.01 per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-10-13",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 7580,
"transaction_price_per_share": 30,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 30000,
"transaction_value": 227400,
"date_of_original_submission": "2020-10-14",
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"SBLK"
],
"issuer_cik": "0001386716",
"owner_cik": "0002005037",
"accession_number": "0002005037-26-000015",
"form_type": "4",
"filing_date": "2026-10-14",
"period_of_report": "2026-10-13",
"issuer_name": "Star Bulk Carriers Corp.",
"issuer_trading_symbol": "SBLK",
"owner_name": "Zagari Raffaele",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common shares, par value $0.01 per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-10-13",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 7580,
"transaction_price_per_share": 30,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 30000,
"transaction_value": 227400,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// 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) · 16 records
- Grants and awards15 records
- Gifts1 record
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.
- 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
How current is SBLK’s insider data?
These are SBLK 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.
Build with AI
Track SBLK 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 SBLK 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.
Nothing on this page is investment advice. All data and content is provided for informational purposes under our Terms of Service.