Star Bulk Carriers Corp. (SBLK) insider trading
Star Bulk Carriers Corp. insiders have made 8 open-market purchases worth $6.9M since Sep 16, 2026, by 8 different insiders. The latest: Raffaele Zagari (Director) bought $1.7M, filed Sep 17, 2026, scored 62 out of 100. The biggest: $2.1M by Milena Maria Pappa, filed Sep 17, 2026. 7 buys in the last year came within ten days of another insider's: a cluster, one of the stronger patterns in the research.
Follow SBLK, freeOpen the live feed
A free account gets an alert the minute a new buy or sale is filed.
Insider purchases
| Filed | Insider | Stake | Score | Bought | 1 week | 1 month |
|---|---|---|---|---|---|---|
| Sep 17 Form 4 (opens sec.gov) |
Raffaele ZagariDirector · 6 insiders buyingDirector · 8 insiders buying | +3% stake | 62 | $1.7M 60,000 at $28.27 |
−5.8% | −11.6% |
| Sep 17 Form 4 (opens sec.gov) |
Charis PlakantonakiChief Strategy Officer · 5 insiders buyingChief Strategy Officer · 8 insiders buying | +5% stake | 58 | $85k 3,000 at $28.27 |
−5.8% | −11.6% |
| Sep 17 Form 4 (opens sec.gov) |
Milena Maria PappaDirector · 8 insiders buyingDirector · 8 insiders buying | +2% stake | 58 | $2.1M 74,400 at $28.27 |
−5.8% | −11.6% |
| Sep 17 Form 4 (opens sec.gov) |
Alexandros PappasOfficer · 7 insiders buyingOfficer · 8 insiders buying | +3% stake | 66 | $2.1M 74,400 at $28.27 |
−5.8% | −11.6% |
| Sep 17 Form 4 (opens sec.gov) |
Nikolaos ReskosCOO · 4 insiders buyingCOO · 8 insiders buying | +3% stake | 65 | $283k 10,000 at $28.27 |
−5.8% | −11.6% |
| Sep 16 Form 4 (opens sec.gov) |
Symeon SpyrouCFO · 2 insiders buyingCFO · 8 insiders buying | +7% stake | 73 | $424k 15,000 at $28.27 |
−1.5% | −10.0% |
| Sep 16 Form 4 (opens sec.gov) |
Nikolaos KarellisDirector · 3 insiders buyingDirector · 8 insiders buying | +26% stake | 62 | $57k 2,000 at $28.27 |
−1.5% | −10.0% |
| Sep 16 Form 4 (opens sec.gov) |
Koert ErhardtDirectorDirector · 8 insiders buying | +60% stake | 70 | $170k 6,000 at $28.27 |
−1.5% | −10.0% |
Track record (hypothetical): a week after the filing, these buys averaged −4.2% (0% up, 8 measured); a month after, −11.0% (0% up, 8 measured).
Insider sales
4 open-market sales on record
| Filed | Insider | Sold |
|---|---|---|
| Oct 14 Form 4 (opens sec.gov) |
Raffaele ZagariDirector | $227k 7,580 at $30.00 · 0% of holdings |
| Oct 7 Form 4 (opens sec.gov) |
Koert ErhardtDirector | $182k 6,000 at $30.39 · 37% of holdings |
| Sep 22 Form 4 (opens sec.gov) |
Mahesh BalakrishnanDirector | $323k 10,000 at $32.34 · 26% of holdings |
| Sep 22 Form 4 (opens sec.gov) |
Eleni VrettouDirector | $112k 3,500 at $32.12 · 5% of holdings |
Most insider sales are planned in advance or made for personal reasons, so a sale says less than a buy.
Insiders who bought SBLK
- Raffaele Zagari Director
- Charis Plakantonaki Chief Strategy Officer
- Milena Maria Pappa Director
- Alexandros Pappas Officer
- Nikolaos Reskos COO
- Symeon Spyrou CFO
- Nikolaos Karellis Director
- Koert Erhardt Director
Questions
Are insiders buying SBLK stock?
Yes. In the last 90 days, 8 open-market purchases were filed, worth $6.9M, against $846k of open-market sales.
Who bought SBLK stock most recently?
Raffaele Zagari, Director, bought 60,000 shares for $1.7M (Form 4 (opens sec.gov), filed Sep 17, 2026).
How does InsiderBeacon score an insider buy?
Out of 100, from who bought, how much their stake grew, the size of the trade, whether other insiders bought within ten days, where the price sat in its 52-week range, and whether it was a first or a routine buy. The score is fixed when the filing arrives. The formula and the research behind it.
Insiders are also buying, same industry
Data as of Oct 14, 2026, from SEC EDGAR Form 4 filings: open-market purchases (code P) of $25,000 or more, and open-market sales. Every row links to its filing. Scores summarise what a filing says (how the score works); outcomes are hypothetical, from the first close after the filing, and past results don't predict future ones. Disclaimer