Stock of the week: SBLK — 8 insiders bought Star Bulk Carriers Corp. this week
No US stock had more distinct insider buyers in the week to Friday, September 18, 2026 than Star Bulk Carriers Corp. (SBLK): 8 insiders filed 8 open-market purchases worth $6.9M. Over the last two years the company has 8 insider buys on record and 2 sales of $1M or more.
This week's purchases
| Filed | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-09-17 | Pappa Milena Mariaclusterfirst buy Director | SBLK Star Bulk Carriers Corp. | Bought | 74,400 | $28.27 | $2.1M |
| 2026-09-17 | Pappas Alexandrosclusterfirst buy Insider | SBLK Star Bulk Carriers Corp. | Bought | 74,400 | $28.27 | $2.1M |
| 2026-09-17 | Zagari Raffaeleclusterfirst buy Director | SBLK Star Bulk Carriers Corp. | Bought | 60,000 | $28.27 | $1.7M |
| 2026-09-16 | Spyrou SymeonclusterCFOfirst buy co CFO | SBLK Star Bulk Carriers Corp. | Bought | 15,000 | $28.27 | $424k |
| 2026-09-17 | Reskos Nikolaosclusterfirst buy Chief Operating Officer | SBLK Star Bulk Carriers Corp. | Bought | 10,000 | $28.27 | $283k |
| 2026-09-16 | Erhardt Koertclusterfirst buy Director | SBLK Star Bulk Carriers Corp. | Bought | 6,000 | $28.27 | $170k |
| 2026-09-17 | Plakantonaki Charisclusterfirst buy Chief Strategy Officer | SBLK Star Bulk Carriers Corp. | Bought | 3,000 | $28.27 | $85k |
| 2026-09-16 | Karellis Nikolaosclusterfirst buy Director | SBLK Star Bulk Carriers Corp. | Bought | 2,000 | $28.27 | $57k |
The buying forms a cluster: 8 insiders between Sep 15, 2026 and Sep 15, 2026, $6.9M in total, score 62/100. See the cluster guide for what the score measures.
Who has been buying over two years
| Insider | Role | Buys | Total bought |
|---|---|---|---|
| Pappa Milena Maria | Director | 1 | $2.1M |
| Pappas Alexandros | Insider | 1 | $2.1M |
| Zagari Raffaele | Director | 1 | $1.7M |
| Spyrou Symeon | co CFO | 1 | $424k |
| Reskos Nikolaos | Chief Operating Officer | 1 | $283k |
| Erhardt Koert | Director | 1 | $170k |
What to make of it
Several insiders buying the same stock in the same week is the single pattern that has held up best in the historical event study — not because insiders are always right, but because a purchase is voluntary and a coincidence of several is rarer than a coincidence of one. Look at where the buys sit on the chart above: purchases into a fall say something different from purchases into a rally. Every SBLK filing, with the original SEC document, is on the SBLK insider trading page.
See SBLK in the Filings Browser
The chart with every marker, the full two-year history and the cluster score breakdown, plus email alerts the morning any insider you watch buys again.
Open the browserFree sampleQuestions this post answers
Have insiders been buying SBLK stock?
Yes. In the week to Sep 18, 2026, 8 distinct insiders filed open-market purchases of Star Bulk Carriers Corp. worth $6.9M. Over the last two years there are 8 insider buys on record.
Who bought SBLK this week?
Pappa Milena Maria (Director) — $2.1M at $28.27; Pappas Alexandros (Insider) — $2.1M at $28.27; Zagari Raffaele (Director) — $1.7M at $28.27; Spyrou Symeon (co CFO) — $424k at $28.27; Reskos Nikolaos (Chief Operating Officer) — $283k at $28.27.
Is insider buying in SBLK a buy signal?
Insider cluster buying has, on average, been followed by market-beating returns over the following quarter in the historical study — with wide dispersion. It is one input, not a recommendation. Not investment advice.