Star Bulk Carriers Corp. (SBLK) Insider Trading
Over the last 3 months, SBLK insiders made 1 open-market buy and 7 sales, a net sale of -$4.6M (SEC Form 4). Over the last 6 months, 118 institutions increased and 127 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
1
Sells (3m)
7
Net (3m)
-$4.6M
Insiders buying
Insider trades by month Buys Sells
Feb
Apr
Apr
May
Jun
Aug
Context3-month price +8.2%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 26, 2026 | Zagari Raffaeledirector | Sell | 50,000 | $31.20 |
| Aug 25, 2026 | Zagari Raffaeledirector | Sell | 50,000 | $30.70 |
| Aug 19, 2026 | Plakantonaki Charisofficer: Chief Strategy Officer | Sell | 10,825 | $29.82 |
| Aug 18, 2026 | Plakantonaki Charisofficer: Chief Strategy Officer | Sell | 10,825 | $28.95 |
| Aug 7, 2026 | Reskos Nikolaosofficer: Chief Operating Officer | Sell | 5,000 | $29.50 |
| Aug 3, 2026 | Blystad Arnedirector | Buy | 7,580 | — |
| Aug 3, 2026 | Reskos Nikolaosofficer: Chief Operating Officer | Sell | 5,000 | $28.99 |
| Jun 17, 2026 | Plakantonaki Charisofficer: Chief Strategy Officer | Grant | 17,200 | — |
| Jun 16, 2026 | Pappa Milena Mariadirector | Grant | 7,580 | — |
| Jun 16, 2026 | Norton Hamishofficer: President | Grant | 35,800 | — |
| Jun 16, 2026 | Erhardt Koertdirector | Grant | 7,580 | — |
| Jun 16, 2026 | Capralos Spyridondirector | Grant | 19,500 | — |
| Jun 16, 2026 | Begleris Christosofficer: co CFO | Grant | 26,200 | — |
| Jun 16, 2026 | Weum Mikkel Stormdirector | Grant | 1,760 | — |
| Jun 16, 2026 | Zagari Raffaeledirector | Grant | 7,580 | — |
| Jun 16, 2026 | Karellis Nikolaosdirector | Grant | 7,580 | — |
| Jun 16, 2026 | Reskos Nikolaosofficer: Chief Operating Officer | Grant | 48,100 | — |
| Jun 16, 2026 | Balakrishnan Maheshdirector | Grant | 7,580 | — |
| Jun 16, 2026 | Vrettou Elenidirector | Grant | 7,580 | — |
| Jun 16, 2026 | Weston Garydirector | Grant | 7,580 | — |
| Jun 16, 2026 | Blystad Arnedirector | Grant | 7,580 | — |
| Jun 16, 2026 | Spyrou Symeonofficer: co CFO | Grant | 26,200 | — |
| Jun 12, 2026 | Karellis Nikolaosdirector | Sell | 20,000 | $26.96 |
| Jun 3, 2026 | Reskos Nikolaosofficer: Chief Operating Officer | Sell | 5,000 | $28.49 |
| May 22, 2026 | Reskos Nikolaosofficer: Chief Operating Officer | Sell | 30,000 | $27.29 |
| May 22, 2026 | Reskos Nikolaosofficer: Chief Operating Officer | Sell | 9,914 | $26.55 |
| May 20, 2026 | Reskos Nikolaosofficer: Chief Operating Officer | Sell | 86 | $26.49 |
| May 20, 2026 | Reskos Nikolaosofficer: Chief Operating Officer | Sell | 33,103 | $26.28 |
| Apr 16, 2026 | Plakantonaki Charisofficer: Chief Strategy Officer | Sell | 16,500 | $24.56 |
| Apr 16, 2026 | Reskos Nikolaosofficer: COO | Sell | 8,406 | $25.05 |
Source: SBLK SEC Form 4 filings, latest Aug 26, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their SBLK positions over the last 6 months (SEC Form 13F).
Increased
118
New positions
88
Reduced
127
Sold out
22
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| TWO SIGMA INVESTMENTS, LP | Increased | 3.6M | Aug 14, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 3.0M | May 15, 2026 |
| BlackRock, Inc. | Increased | 2.8M | Aug 7, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 2.4M | Aug 14, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 2.1M | Aug 13, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 2.1M | May 14, 2026 |
| VICTORY CAPITAL MANAGEMENT INC | Increased | 2.0M | Aug 7, 2026 |
| GOLDMAN SACHS GROUP INC | Increased | 2.0M | Aug 14, 2026 |
| VICTORY CAPITAL MANAGEMENT INC | New Position | 1.9M | May 15, 2026 |
| PHILOSOPHY CAPITAL MANAGEMENT LLC | Increased | 1.9M | May 15, 2026 |
| Philosophy Capital Management LLC | Reduced | 1.8M | Aug 14, 2026 |
| GOLDMAN SACHS GROUP INC | Increased | 1.7M | May 15, 2026 |
| JANE STREET GROUP, LLC | Increased | 1.7M | Aug 14, 2026 |
| BOSTON PARTNERS | Increased | 1.6M | May 11, 2026 |
| JANE STREET GROUP, LLC | Increased | 1.6M | May 12, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.