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SBLK

Star Bulk Carriers Corp. Commo

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SBLK in the last 90 days

Star Bulk Carriers Corp. Commo (SBLK) had no congress transactions and 9 insider purchases worth $6,920,496 by 8 insiders in filings from the last 90 days.

FINRA’s latest report (settlement 15 SEPT 2026) shows 2,708,879 shares held short, 1.6 days to cover, up 61.4% from the report before.

  • Insiders: open-market purchases only (Form 4 code P); a purchase filed by related owners counts once.
  • Delay: each filing below shows how many days passed between the trade and its publication. None of this is real-time.

Latest filing on file: 17 SEPT 2026 · FINRA settlement 15 SEPT 2026 · public filings, reported as filed

What the price is doing

$32$31 → $32 · +2% over the last month

SBLK is up 2% over the last month.

$31 STARTSEPT15 SEPT 2026 — Erhardt Koert — $169,62015 SEPT 2026 — Reskos Nikolaos — $282,70015 SEPT 2026 — Spyrou Symeon — $424,05015 SEPT 2026 — Plakantonaki Charis — $84,81015 SEPT 2026 — Zagari Raffaele — $282,70015 SEPT 2026 — Zagari Raffaele — $1,413,50015 SEPT 2026 — Karellis Nikolaos — $56,54015 SEPT 2026 — Pappas Alexandros — $2,103,28815 SEPT 2026 — Pappa Milena Maria — $2,103,288NOW $32

Insider activityBoughtSold

Politicians

None filed

Traded over the last month

Short sellers

One reading

Only one reading (15 SEPT 2026) — not enough to compare

See the numbers →

Insiders

9 reported

Traded over the last month

See the filings →

What the filings show

What the filings show · last 90 days

2 of 4 sources

-14Balanced

Leaning outBalancedLeaning in

The disclosed money is split, on what has actually been filed. This reads on two of the four sources we track.

Short interest
Short interest rose 150.5% — 1,081,406 to 2,708,879 shares between 15 JUL 2026 and 15 SEPT 2026. See the filings →
-100
Insider purchases
8 insiders disclosed buying $6,920,496 across 8 filings.
+100

This summarises filings that have already been published — it is not a forecast, a rating of the company, or advice. Every figure above is listed in full further down this page, with the document it came from.

FINRA short interest

Settlement 15 SEPT 2026 · shares held short

2,708,879shares held short

Days to cover

1.58

Avg daily volume

1,710,656

Since last report

+61.35%

As of 15 September 2026, 2,708,879 Star Bulk Carriers Corp. Commo shares were held short — the total across every reporting firm, not one fund's position. That is 1,030,015 shares more than the previous report, a 61.35% increase. At the average daily volume of 1,710,656 shares, that position represents 1.58 days of trading — what the filing calls days to cover.

This is the most recent figure that exists, and it is 17 days old. FINRA collects short interest twice a month, on a settlement date, and publishes it about eight business days later. So nobody has a live short-interest number for SBLK — not us, and not anyone quoting one. We print the settlement date on the figure so you always know which day you are looking at.

Across the 12 reports we hold, the position has risen from 1,492,367 shares on 31 March 2026 to 2,708,879 today, a change of 81.5%. The highest reading in that window was 2,708,879 shares on 15 September 2026.

SettlementShares shortDays to cover
15 SEPT 20262,708,8791.58
31 AUG 20261,678,8641.03
14 AUG 20262,147,3641.59
31 JUL 20262,057,7831.64
15 JUL 20261,081,4061.00
30 JUN 20261,639,5591.13
15 JUN 20261,939,7281.71
29 MAY 20261,797,8711.04
15 MAY 20261,642,8291.41
30 APR 20261,536,1991.82
15 APR 20261,544,3981.78
31 MAR 20261,492,3671.00
What is SBLK's short interest?
2,708,879 shares, as of the 15 September 2026 settlement date. That is the figure FINRA published, unadjusted.
What percentage of the float is short?
We do not publish that, because FINRA does not publish float. The regulator reports the number of shares held short; turning it into a percentage needs a share count from somewhere else, and different sources disagree about what counts as float. We would rather give you the number that was actually filed than a percentage built on an assumption.
How current is this?
It is 17 days old, and that is as fresh as short interest gets. FINRA measures it twice a month and publishes it seven business days after the settlement date. Any site showing you a "live" short interest figure is showing you something else.
What does days to cover mean?
It is the short position divided by average daily trading volume — here, 1.58. It describes how many days of ordinary trading the position is equivalent to. It is arithmetic from the filing, not a prediction about what will happen.
Where does this come from?
FINRA's consolidated short interest file, which is public. We read it directly and store it unchanged, except that we blank the days-to-cover placeholder FINRA writes when a stock has almost no volume.

Disclosed insider buying on file

$6,920,496across 9 purchases

Open-market purchases only — the amount is a fact, not a verdict.

On file here

Short positions0

Insider purchases9

Congress transactions0

Latest change17 SEPT 2026

SHORT POSITIONS · 0INSIDER BUYS · 9CONGRESS · 0

Insider purchases on file

  • SEC — Form 4 insider purchase

    Zagari RaffaeleDirector

    BOUGHTCommon shares, par value $0.01 per share

    $1,413,500

    50,000 sh @ $28.27

    15 SEPT 2026 → filed 17 SEPT 2026

    Filed 2 days after the tradeSEC EDGAR · 0002005037-26-000014 →

  • SEC — Form 4 insider purchase

    Plakantonaki CharisChief Strategy Officer

    BOUGHTCommon shares par value $ 0.01 per share

    $84,810

    3,000 sh @ $28.27

    15 SEPT 2026 → filed 17 SEPT 2026

    Filed 2 days after the tradeSEC EDGAR · 0001978604-26-000008 →

  • SEC — Form 4 insider purchase

    Reskos NikolaosChief Operating Officer

    BOUGHTCommon shares, par value $0.01 per share

    $282,700

    10,000 sh @ $28.27

    15 SEPT 2026 → filed 17 SEPT 2026

    Filed 2 days after the tradeSEC EDGAR · 0001969292-26-000010 →

  • SEC — Form 4 insider purchase

    Zagari RaffaeleDirector

    BOUGHTCommon shares, par value $0.01 per share

    $282,700

    10,000 sh @ $28.27

    15 SEPT 2026 → filed 17 SEPT 2026

    Filed 2 days after the tradeSEC EDGAR · 0002005037-26-000014 →

  • SEC — Form 4 insider purchase

    Pappa Milena MariaDirector

    BOUGHTCommon Shares par value $0.01 per share

    $2,103,288

    74,400 sh @ $28.27

    15 SEPT 2026 → filed 17 SEPT 2026

    Filed 2 days after the tradeSEC EDGAR · 0002113812-26-000003 →

  • SEC — Form 4 insider purchase

    Pappas AlexandrosOther: Head of Operations

    BOUGHTCommon Shares par value $0.01 per share

    $2,103,288

    74,400 sh @ $28.27

    15 SEPT 2026 → filed 17 SEPT 2026

    Filed 2 days after the tradeSEC EDGAR · 0002107497-26-000002 →

  • SEC — Form 4 insider purchase

    Karellis NikolaosDirector

    BOUGHTCommon shares, par value $0.01 per share

    $56,540

    2,000 sh @ $28.27

    15 SEPT 2026 → filed 16 SEPT 2026

    Filed 1 day after the tradeSEC EDGAR · 0002011929-26-000010 →

  • SEC — Form 4 insider purchase

    Spyrou Symeonco CFO

    BOUGHTCommon shares, par value $0.01 per share

    $424,050

    15,000 sh @ $28.27

    15 SEPT 2026 → filed 16 SEPT 2026

    Filed 1 day after the tradeSEC EDGAR · 0001969701-26-000006 →

  • SEC — Form 4 insider purchase

    Erhardt KoertDirector

    BOUGHTCommon shares, par value $0.01 per share

    $169,620

    6,000 sh @ $28.27

    15 SEPT 2026 → filed 16 SEPT 2026

    Filed 1 day after the tradeSEC EDGAR · 0001333848-26-000003 →
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