Star Bulk Carriers Corp. (SBLK) Insider Trading

Cluster buy

7 insiders bought $4.82M of their own stock in 29 days.

Open-market purchases by executives and directors between Sep 15 and Oct 13. Buying is rarer than selling and says more, but it is one input, not a verdict.

Net open-market

−$4.01M

9 buys · 19 sales

Under a 10b5-1 plan

32%

of the value sold

Insiders who bought / sold

8 / 7

executives and directors

Last open-market buy

Oct 2026

Oct 13, 2026

Get an email when SBLK's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 13	Raffaele Zagari Director	Bought	0	—	—	New	Form 4
Oct 13	Raffaele Zagari Director	SoldNo plan	7,580	$30.00	$227k	0.4%	Form 4
Oct 5	Koert Erhardt Director	SoldNo plan	6,000	$30.39	$182k	37%	Form 4
Sep 21	Eleni Vrettou Director	SoldNo plan	3,500	$32.12	$112k	4.5%	Form 4
Sep 18	Mahesh Balakrishnan Director	SoldNo plan	10,000	$32.34	$323k	26%	Form 4
Sep 15	Milena Maria Pappa Director	Bought	74,400	$28.27	$2.1M	2.4%	Form 4
Sep 15	Alexandros Pappas Other	Bought	74,400	$28.27	$2.1M	3.0%	Form 4
Sep 15	Raffaele Zagari Director	Bought 2 parts	60,000	$28.27 average	$1.7M	3.1%	Form 4
Sep 15	Charis Plakantonaki Chief Strategy Officer	Bought	3,000	$28.27	$85k	5.4%	Form 4
Sep 15	Nikolaos Reskos Chief Operating Officer	Bought	10,000	$28.27	$283k	2.5%	Form 4
Sep 15	Nikolaos Karellis Director	Bought	2,000	$28.27	$57k	26%	Form 4
Sep 15	Symeon Spyrou co CFO	Bought	15,000	$28.27	$424k	6.6%	Form 4
Sep 15	Koert Erhardt Director	Bought	6,000	$28.27	$170k	60%	Form 4
Aug 25	Raffaele Zagari Director	SoldNo plan	50,000	$31.20	$1.56M	2.6%	Form 4
Aug 24	Raffaele Zagari Director	SoldNo plan	50,000	$30.70	$1.53M	2.6%	Form 4
Aug 17	Charis Plakantonaki Chief Strategy Officer	SoldNo plan	10,825	$29.82	$323k	16%	Form 4
Aug 14	Charis Plakantonaki Chief Strategy Officer	SoldNo plan	10,825	$28.95	$313k	14%	Form 4
Aug 6	Nikolaos Reskos Chief Operating Officer	Sold10b5-1 plan	5,000	$29.50	$148k	1.2%	Form 4
Jul 30	Nikolaos Reskos Chief Operating Officer	Sold10b5-1 plan	5,000	$28.99	$145k	1.2%	Form 4
Jun 12	Arne Blystad Director	Bought	7,580	—	—	7.0%	Form 4
Jun 11	Nikolaos Karellis Director	SoldNo plan	20,000	$26.96	$539k	100%	Form 4
Jun 1	Nikolaos Reskos Chief Operating Officer	Sold10b5-1 plan	5,000	$28.49	$142k	1.4%	Form 4
May 20 – 21	Nikolaos Reskos Chief Operating Officer	Sold10b5-1 plan 2 parts	39,914	$27.11 average	$1.08M	9.8%	Form 4
May 18 – 19	Nikolaos Reskos Chief Operating Officer	Sold10b5-1 plan 2 parts	33,189	$26.28 average	$872k	7.5%	Form 4
Apr 14 – 15	Nikolaos Reskos COO	SoldNo plan 2 parts	10,000	$25.04 average	$250k	2.2%	Form 4
Apr 8	Charis Plakantonaki Chief Strategy Officer	Sold10b5-1 plan	16,500	$24.56	$405k	38%	Form 4
Apr 8	Charis Plakantonaki Chief Strategy Officer	SoldNo plan	16,500	$24.56	$405k	22%	Form 4
Mar 31	Raffaele Zagari Director	SoldNo plan	11,500	—	—	135%	Form 4
Mar 31	Raffaele Zagari Director	SoldNo plan	11,500	$22.75	$262k	135%	Form 4

Oct 13
Raffaele Zagari
Director · bought 0
—
New position
Oct 13No plan
Raffaele Zagari
Director · sold 7,580 at $30.00
$227k
0.4% of stake
Oct 5No plan
Koert Erhardt
Director · sold 6,000 at $30.39
$182k
37% of stake
Sep 21No plan
Eleni Vrettou
Director · sold 3,500 at $32.12
$112k
4.5% of stake
Sep 18No plan
Mahesh Balakrishnan
Director · sold 10,000 at $32.34
$323k
26% of stake
Sep 15
Milena Maria Pappa
Director · bought 74,400 at $28.27
$2.1M
2.4% of stake
Sep 15
Alexandros Pappas
Other · bought 74,400 at $28.27
$2.1M
3.0% of stake
Sep 15
Raffaele Zagari
Director · bought 60,000 at avg $28.27
$1.7M
3.1% of stake
Sep 15
Charis Plakantonaki
Chief Strategy Officer · bought 3,000 at $28.27
$85k
5.4% of stake
Sep 15
Nikolaos Reskos
Chief Operating Officer · bought 10,000 at $28.27
$283k
2.5% of stake
Sep 15
Nikolaos Karellis
Director · bought 2,000 at $28.27
$57k
26% of stake
Sep 15
Symeon Spyrou
co CFO · bought 15,000 at $28.27
$424k
6.6% of stake
Sep 15
Koert Erhardt
Director · bought 6,000 at $28.27
$170k
60% of stake
Aug 25No plan
Raffaele Zagari
Director · sold 50,000 at $31.20
$1.56M
2.6% of stake
Aug 24No plan
Raffaele Zagari
Director · sold 50,000 at $30.70
$1.53M
2.6% of stake
Aug 17No plan
Charis Plakantonaki
Chief Strategy Officer · sold 10,825 at $29.82
$323k
16% of stake
Aug 14No plan
Charis Plakantonaki
Chief Strategy Officer · sold 10,825 at $28.95
$313k
14% of stake
Aug 610b5-1 plan
Nikolaos Reskos
Chief Operating Officer · sold 5,000 at $29.50
$148k
1.2% of stake
Jul 3010b5-1 plan
Nikolaos Reskos
Chief Operating Officer · sold 5,000 at $28.99
$145k
1.2% of stake
Jun 12
Arne Blystad
Director · bought 7,580
—
7.0% of stake
Jun 11No plan
Nikolaos Karellis
Director · sold 20,000 at $26.96
$539k
100% of stake
Jun 110b5-1 plan
Nikolaos Reskos
Chief Operating Officer · sold 5,000 at $28.49
$142k
1.4% of stake
May 20 – 2110b5-1 plan
Nikolaos Reskos
Chief Operating Officer · sold 39,914 at avg $27.11
$1.08M
9.8% of stake
May 18 – 1910b5-1 plan
Nikolaos Reskos
Chief Operating Officer · sold 33,189 at avg $26.28
$872k
7.5% of stake
Apr 14 – 15No plan
Nikolaos Reskos
COO · sold 10,000 at avg $25.04
$250k
2.2% of stake
Apr 810b5-1 plan
Charis Plakantonaki
Chief Strategy Officer · sold 16,500 at $24.56
$405k
38% of stake
Apr 8No plan
Charis Plakantonaki
Chief Strategy Officer · sold 16,500 at $24.56
$405k
22% of stake
Mar 31No plan
Raffaele Zagari
Director · sold 11,500
—
135% of stake
Mar 31No plan
Raffaele Zagari
Director · sold 11,500 at $22.75
$262k
135% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch SBLK, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in SBLK's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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