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SBLK · Star Bulk Carriers Corp.

Everything on this page is public record — SEC Form 4 filings and congressional disclosures — alongside any INSIDER SCANNER research case for this company.

Open-market buys12
Open-market sells5
Total purchased$8,682,896
Unique insiders buying8
Most senior buyerCFO
Avg price paid$28.27
Research cases1
Latest caseExpired
Last filing2026-10-13

Average price paid is weighted by shares, so a large purchase counts for more than a small one. It is what insiders reported paying, not a target or a fair value.

Insider flow: Net buying by value — a count of disclosed transactions, not a rating or a recommendation.

Insider transaction timeline

Every reported transaction, positioned by trade date. Purchases sit above the axis, sales below; circle area is proportional to dollar value. No share-price line is drawn — this feed carries transaction prices only, and a price history inferred from them would imply market data the filings do not contain.

Open-market purchase Open-market sale
2026-08-17 — Plakantonaki Charis · sold 10,825 @ $29.82 2026-08-24 — Zagari Raffaele · bought 50,000 @ $30.70 2026-08-25 — Zagari Raffaele · sold 50,000 @ $31.20 2026-09-15 — Reskos Nikolaos · bought 10,000 @ $28.27 2026-09-15 — Plakantonaki Charis · bought 3,000 @ $28.27 2026-09-15 — Zagari Raffaele · bought 10,000 @ $28.27 2026-09-15 — Zagari Raffaele · bought 50,000 @ $28.27 2026-09-15 — Pappas Alexandros · bought 74,400 @ $28.27 2026-09-15 — Pappa Milena Maria · bought 74,400 @ $28.27 2026-09-15 — Erhardt Koert · bought 6,000 @ $28.27 2026-09-15 — Spyrou Symeon · bought 15,000 @ $28.27 2026-09-15 — Karellis Nikolaos · bought 2,000 @ $28.27 2026-09-18 — Balakrishnan Mahesh · sold 10,000 @ $32.34 2026-09-21 — Vrettou Eleni · sold 3,500 @ $32.12 2026-10-05 — Erhardt Koert · sold 6,000 @ $30.39 2026-10-13 — Zagari Raffaele · bought 7,580 @ $30.00 2026-10-13 — Zagari Raffaele · bought 0 @ $0.00
2026-08-172026-10-13

Insider cost basis

Share-weighted average price across 11 reported purchases, with the full range of prices paid. Purchases only — averaging a sale into an "insider cost" would describe a price nobody paid.

$28.27 $30.70
$28.72 weighted average insider purchase price

Insider participation

One row per insider, one cell per reported transaction, shaded by value. Repeat buying and activity clustered in time are visible at a glance.

Zagari Raffaele Director
Plakantonaki Charis Chief Strategy Officer
Erhardt Koert Director
Reskos Nikolaos Chief Operating Officer
Pappas Alexandros Other
Pappa Milena Maria Director
Spyrou Symeon co CFO
Karellis Nikolaos Director
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The analysis built on top of these filings

The filings above are public record and stay public here. What an account adds for $SBLK is the reading of them — and for this company, that is what the list below says it is, no more.

  • Insider cost basisShare-weighted average price paid across the 12 reported purchases, with the full range, against the current price.
  • Insider participationWho bought, how often, and how the buying is distributed across the people filing — one person repeating is not several agreeing.
  • Transaction timelineThe [{'transaction_date': '2026-10-13', 'insider_name': 'Zagari Raffaele', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 7580.0, 'price': 30.0, 'value': 227400.0, 'is_buy': True}, {'transaction_date': '2026-10-13', 'insider_name': 'Zagari Raffaele', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 0.0, 'price': 0.0, 'value': None, 'is_buy': True}, {'transaction_date': '2026-10-05', 'insider_name': 'Erhardt Koert', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 6000.0, 'price': 30.39, 'value': 182340.0, 'is_buy': False}, {'transaction_date': '2026-09-21', 'insider_name': 'Vrettou Eleni', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 3500.0, 'price': 32.12, 'value': 112420.0, 'is_buy': False}, {'transaction_date': '2026-09-18', 'insider_name': 'Balakrishnan Mahesh', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 10000.0, 'price': 32.34, 'value': 323400.0, 'is_buy': False}, {'transaction_date': '2026-09-15', 'insider_name': 'Reskos Nikolaos', 'insider_title': 'Chief Operating Officer', 'transaction_type': 'Open-market buy', 'shares': 10000.0, 'price': 28.27, 'value': 282700.0, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'Plakantonaki Charis', 'insider_title': 'Chief Strategy Officer', 'transaction_type': 'Open-market buy', 'shares': 3000.0, 'price': 28.27, 'value': 84810.0, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'Zagari Raffaele', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 10000.0, 'price': 28.27, 'value': 282700.0, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'Zagari Raffaele', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 50000.0, 'price': 28.27, 'value': 1413500.0, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'Pappas Alexandros', 'insider_title': 'Other', 'transaction_type': 'Open-market buy', 'shares': 74400.0, 'price': 28.27, 'value': 2103288.0, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'Pappa Milena Maria', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 74400.0, 'price': 28.27, 'value': 2103288.0, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'Erhardt Koert', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 6000.0, 'price': 28.27, 'value': 169620.0, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'Spyrou Symeon', 'insider_title': 'co CFO', 'transaction_type': 'Open-market buy', 'shares': 15000.0, 'price': 28.27, 'value': 424050.0, 'is_buy': True}, {'transaction_date': '2026-09-15', 'insider_name': 'Karellis Nikolaos', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 2000.0, 'price': 28.27, 'value': 56540.0, 'is_buy': True}, {'transaction_date': '2026-08-25', 'insider_name': 'Zagari Raffaele', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 50000.0, 'price': 31.2, 'value': 1560000.0, 'is_buy': False}, {'transaction_date': '2026-08-24', 'insider_name': 'Zagari Raffaele', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 50000.0, 'price': 30.7, 'value': 1535000.0, 'is_buy': True}, {'transaction_date': '2026-08-17', 'insider_name': 'Plakantonaki Charis', 'insider_title': 'Chief Strategy Officer', 'transaction_type': 'Open-market sell', 'shares': 10825.0, 'price': 29.82, 'value': 322801.5, 'is_buy': False}] reported transactions plotted over the window rather than listed, so concentration is visible.
  • 1 research caseThe rating, the factors behind it, the entry reference, and the written reasoning — including what would undermine it.

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Not financial advice. This page reports public filings and past research output. It is not a recommendation to buy or sell, and no price target here is a prediction. Trade at your own risk.