About this page
Insider trades reported on SEC Form 4: when the people who run a company buy or sell its shares with their own money.
How to read it
- Form 4
- The form a company insider (officer, director or owner of more than 10%) must file with the SEC within two business days of buying or selling the company's shares.
- Buy (P) and Sell (S)
- Open-market purchases and sales. Gifts, option exercises and automatic tax withholding are left out because they say little about what the insider thinks.
- Value
- Shares times price, as reported on the filing.
- 10b5-1
- A trade made under a plan set up in advance. Planned sales are common and usually say less than an unplanned purchase.
- Late filing
- A Form 4 filed more than two business days after the trade.
- Vs. S&P 500
- How the stock did after the trade minus how the overall market did in the same weeks.
A real example
In January 2016, when bank stocks were falling, JPMorgan Chase CEO Jamie Dimon bought 500,000 JPMorgan shares with his own money, worth about $26 million. His Form 4 made the purchase public within days, and investors read it as a strong sign of confidence.
Explain it like I'm 13
If the coach of a team bets his own allowance that his team will win, that tells you something. A Form 4 is the note a company boss must hand in whenever he buys or sells his own company's shares, so everyone can see it.
Data from public SEC filings and congressional reports. Information, not investment advice. Check every number against the filing linked on the page.
Star Bulk Carriers Corp. (SBLK): Insider Trades and Fund Holdings
In the past 12 months, Star Bulk Carriers Corp. insiders reported 9 open-market purchases worth $6.92M and 8 sales worth $4.58M; 0 of the sales were reported as made under a 10b5-1 trading plan.
Timeline: news and trades
Company filings (8-K), insider trades, notices of planned sales (Form 144), Congress trades and fund moves in the past year, newest first.
- Oct 13, 2026Insider saleDirector Raffaele Zagari sold $227,400
- Oct 5, 2026Insider saleDirector Koert Erhardt sold $182,340
- Oct 5, 2026Planned saleErhardt Koert (director) filed notice to sell about $182,000 around Oct 5, 2026
- Sep 21, 2026Insider saleDirector Eleni Vrettou sold $112,420
- Sep 21, 2026Planned saleVrettou Eleni (director) filed notice to sell about $113,680 around Sep 21, 2026
- Sep 18, 2026Insider saleDirector Mahesh Balakrishnan sold $323,400
- Sep 18, 2026Planned saleBalakrishnan Mahesh (director) filed notice to sell about $315,500 around Sep 18, 2026
- Sep 15, 2026Insider buyOther Alexandros Pappas bought $2.1 million
- Sep 15, 2026Insider buyDirector Milena Maria Pappa bought $2.1 million
- Sep 15, 2026Insider buyDirector Raffaele Zagari bought $1.7 million
- Sep 15, 2026Insider buyCOO Nikolaos Reskos bought $282,700
- Sep 15, 2026Insider buyChief Strategy Officer Charis Plakantonaki bought $84,810
- Sep 15, 2026Insider buyCFO Symeon Spyrou bought $424,050
- Sep 15, 2026Insider buyDirector Koert Erhardt bought $169,620
- Sep 15, 2026Insider buyDirector Nikolaos Karellis bought $56,540
- Aug 25, 2026Insider saleDirector Raffaele Zagari sold $1.6 million
- Aug 24, 2026Insider saleDirector Raffaele Zagari sold $1.5 million
- Aug 17, 2026Insider saleChief Strategy Officer Charis Plakantonaki sold $322,803
- Aug 17, 2026Planned saleCHARIS PLAKANTONAKI (officer) filed notice to sell about $322,803 around Aug 17, 2026
- Aug 17, 2026Planned saleSOFIA DAMIGOU (officer) filed notice to sell about $198,150 around Aug 17, 2026
- Aug 14, 2026Insider saleChief Strategy Officer Charis Plakantonaki sold $313,425
- Jun 30, 2026FundBridgewater Associates added 30% in Q2 2026 (13F filed Aug 14, 2026)
- Jun 30, 2026FundRenaissance Technologies added 2% in Q2 2026 (13F filed Aug 13, 2026)
Recent insider trades
Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 14, 2026.
| Filed | Insider | Type | Value | Score |
|---|---|---|---|---|
| Oct 14 | Raffaele ZagariDirector | ▼ SELL | $227K | |
| Oct 7 | Koert ErhardtDirector | ▼ SELL | $182K | |
| Sep 22 | Mahesh BalakrishnanDirector | ▼ SELL | $323K | |
| Sep 22 | Eleni VrettouDirector | ▼ SELL | $112K | |
| Sep 17 | Alexandros PappasOther | ▲ BUY | $2.10M | 38 |
| Sep 17 | Milena Maria PappaDirector | ▲ BUY | $2.10M | 41 |
| Sep 17 | Raffaele ZagariDirector | ▲ BUY | $1.41M | 41 |
| Sep 17 | Nikolaos ReskosCOO | ▲ BUY | $283K | 42 |
| Sep 17 | Raffaele ZagariDirector | ▲ BUY | $283K | 47 |
| Sep 17 | Charis PlakantonakiChief Strategy Officer | ▲ BUY | $85K | 36 |
Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| Raffaele Zagari | Director | 2 | $1.70M | 3 | $3.32M |
| Koert Erhardt | Director | 1 | $170K | 1 | $182K |
| Mahesh Balakrishnan | Director | 0 | $0 | 1 | $323K |
| Eleni Vrettou | Director | 0 | $0 | 1 | $112K |
| Alexandros Pappas | Other | 1 | $2.10M | 0 | $0 |
| Milena Maria Pappa | Director | 1 | $2.10M | 0 | $0 |
| Nikolaos Reskos | COO | 1 | $283K | 0 | $0 |
| Charis Plakantonaki | Chief Strategy Officer | 1 | $85K | 2 | $636K |
Buybacks and executive pay
Star Bulk Carriers Corp. spent $98.1 million buying back its own shares in 2025.
From the company's XBRL data filed with the SEC. "Actually paid" is the SEC's pay-versus-performance measure, which counts changes in the value of stock awards. "Value of $100 invested" is the company's cumulative shareholder return as reported, usually measured from five years earlier. See all buybacks and CEO pay across companies.
52 Koert Erhardt (Director), 2026-09-15. What the score means
A All 17 insider trades reported on time. How it is graded
Tracked funds that report SBLK
From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.
| Fund | Shares | Value | Change |
|---|---|---|---|
| Renaissance Technologies | 2,099,637 | $52.4M | ▲ +1.5% |
| Bridgewater Associates | 718,057 | $17.9M | ▲ +30.2% |
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →